diff --git a/ClientApp/cypress/integration/features/online-board.cy.ts b/ClientApp/cypress/integration/features/online-board.cy.ts
new file mode 100644
index 00000000..92830c95
--- /dev/null
+++ b/ClientApp/cypress/integration/features/online-board.cy.ts
@@ -0,0 +1,973 @@
+import * as moment from 'moment';
+import { CITIES, MOCK_FLIGHTS_ARRIVAL, MOCK_FLIGHTS_DEPARTURE } from '../../support/fixtures';
+
+describe('Online Board Feature Tests (~70 tests)', () => {
+    const today = moment().format('DD.MM.YYYY');
+    const tomorrow = moment().add(1, 'day').format('DD.MM.YYYY');
+    const yesterday = moment().subtract(1, 'day').format('DD.MM.YYYY');
+    const nextWeek = moment().add(7, 'day').format('DD.MM.YYYY');
+
+    const expectedUrlDateTime = `${moment().format('DDMMYYYY')}-0000-2400`;
+
+    beforeEach(() => {
+        cy.intercept('GET', '**/api/flights/v1.1/**').as('getFlights');
+        cy.intercept('GET', '**/api/cities/**').as('getCities');
+        cy.forbidGeolocation();
+        cy.visit('/');
+    });
+
+    // ============================================================================
+    // ARRIVAL TAB TESTS (~20 tests)
+    // ============================================================================
+    describe('Arrival Tab Tests', () => {
+        describe('City Input - Manual Entry', () => {
+            it('should accept manual city entry for valid city name', () => {
+                cy.getByTestId('city-autocomplete-input-arrival')
+                    .clear()
+                    .type('Москва');
+                cy.getByTestId('city-autocomplete-input-arrival')
+                    .should('have.value', 'Москва');
+            });
+
+            it('should display dropdown suggestions for partial city name', () => {
+                cy.getByTestId('city-autocomplete-input-arrival')
+                    .clear()
+                    .type('Мос');
+                cy.getByTestId('city-dropdown-option')
+                    .should('be.visible')
+                    .should('have.length.greaterThan', 0);
+            });
+
+            it('should filter dropdown options based on input', () => {
+                cy.getByTestId('city-autocomplete-input-arrival')
+                    .clear()
+                    .type('Анапа');
+                cy.getByTestId('city-dropdown-option')
+                    .contains('Анапа')
+                    .should('be.visible');
+            });
+
+            it('should handle special characters in city input', () => {
+                cy.getByTestId('city-autocomplete-input-arrival')
+                    .clear()
+                    .type('М@сква');
+                // Should not crash and handle gracefully
+                cy.getByTestId('city-autocomplete-input-arrival').should('exist');
+            });
+
+            it('should clear city input when cleared explicitly', () => {
+                cy.getByTestId('city-autocomplete-input-arrival')
+                    .clear()
+                    .type('Москва');
+                cy.getByTestId('city-autocomplete-input-arrival').clear();
+                cy.getByTestId('city-autocomplete-input-arrival')
+                    .should('have.value', '');
+            });
+
+            it('should show validation error for empty city input on search', () => {
+                cy.getByTestId('arrival-date-input').clear().type(today).type('{enter}');
+                cy.getByTestId('search-button').click();
+                cy.shouldShowValidationError('City');
+            });
+        });
+
+        describe('City Input - Dropdown Selection', () => {
+            it('should select city from dropdown by clicking', () => {
+                cy.getByTestId('city-autocomplete-input-arrival')
+                    .clear()
+                    .type('Москва');
+                cy.getByTestId('city-dropdown-option')
+                    .contains('Москва')
+                    .click();
+                cy.getByTestId('city-autocomplete-input-arrival')
+                    .should('have.value', 'Москва');
+            });
+
+            it('should display city code after selection from dropdown', () => {
+                cy.selectArrivalCity('Москва');
+                cy.getByTestId('city-code')
+                    .should('contain', 'MOW');
+            });
+
+            it('should allow switching between different cities using dropdown', () => {
+                cy.selectArrivalCity('Москва');
+                cy.getByTestId('city-code').should('contain', 'MOW');
+
+                cy.getByTestId('city-autocomplete-input-arrival').clear().type('Анапа');
+                cy.getByTestId('city-dropdown-option').contains('Анапа').click();
+                cy.getByTestId('city-code').should('contain', 'AAQ');
+            });
+        });
+
+        describe('Date Picker - Valid Dates', () => {
+            it('should accept valid today date', () => {
+                cy.getByTestId('arrival-date-input')
+                    .clear()
+                    .type(today)
+                    .type('{enter}');
+                cy.getByTestId('arrival-date-input')
+                    .should('have.value', today);
+            });
+
+            it('should accept valid future date (tomorrow)', () => {
+                cy.getByTestId('arrival-date-input')
+                    .clear()
+                    .type(tomorrow)
+                    .type('{enter}');
+                cy.getByTestId('arrival-date-input')
+                    .should('have.value', tomorrow);
+            });
+
+            it('should accept valid future date (one week)', () => {
+                cy.getByTestId('arrival-date-input')
+                    .clear()
+                    .type(nextWeek)
+                    .type('{enter}');
+                cy.getByTestId('arrival-date-input')
+                    .should('have.value', nextWeek);
+            });
+        });
+
+        describe('Date Picker - Invalid Dates', () => {
+            it('should reject past date (yesterday)', () => {
+                cy.getByTestId('arrival-date-input')
+                    .clear()
+                    .type(yesterday);
+                cy.getByTestId('search-button').click();
+                cy.shouldShowValidationError('date');
+            });
+
+            it('should handle invalid date format', () => {
+                cy.getByTestId('arrival-date-input')
+                    .clear()
+                    .type('invalid');
+                cy.getByTestId('search-button').click();
+                // Should show error or ignore invalid input
+                cy.getByTestId('validation-error').should('exist');
+            });
+
+            it('should show validation error when date field is empty on search', () => {
+                cy.getByTestId('arrival-date-input').clear();
+                cy.selectArrivalCity('Москва');
+                cy.getByTestId('search-button').click();
+                cy.shouldShowValidationError('date');
+            });
+        });
+
+        describe('Search - Valid and Error Cases', () => {
+            it('should perform valid arrival search with city and date', () => {
+                cy.selectArrivalCity('Москва');
+                cy.getByTestId('arrival-date-input').clear().type(today).type('{enter}');
+                cy.getByTestId('search-button').click();
+
+                cy.getByTestId('loader').should('be.visible');
+                cy.wait('@getFlights').then(() => {
+                    cy.getByTestId('board-search-result').should('be.visible');
+                });
+            });
+
+            it('should show validation error when missing city field', () => {
+                cy.getByTestId('arrival-date-input').clear().type(today).type('{enter}');
+                cy.getByTestId('search-button').click();
+                cy.shouldShowValidationError('City');
+            });
+
+            it('should show validation error when missing date field', () => {
+                cy.selectArrivalCity('Москва');
+                cy.getByTestId('search-button').click();
+                cy.shouldShowValidationError('date');
+            });
+
+            it('should handle network error gracefully', () => {
+                cy.intercept('GET', '**/api/flights/v1.1/**', {
+                    statusCode: 500,
+                    body: { error: 'Internal Server Error' },
+                }).as('getFlightsError');
+
+                cy.selectArrivalCity('Москва');
+                cy.getByTestId('arrival-date-input').clear().type(today).type('{enter}');
+                cy.getByTestId('search-button').click();
+
+                cy.wait('@getFlightsError');
+                cy.getByTestId('error-message').should('be.visible');
+            });
+
+            it('should show loading state during search', () => {
+                cy.intercept('GET', '**/api/flights/v1.1/**', (req) => {
+                    req.reply((res) => {
+                        res.delay(1000);
+                    });
+                }).as('getFlightsSlow');
+
+                cy.selectArrivalCity('Москва');
+                cy.getByTestId('arrival-date-input').clear().type(today).type('{enter}');
+                cy.getByTestId('search-button').click();
+
+                cy.getByTestId('loader').should('be.visible');
+                cy.wait('@getFlightsSlow');
+            });
+        });
+
+        describe('Results - Flight List Rendering', () => {
+            it('should render flight list after successful search', () => {
+                cy.selectArrivalCity('Москва');
+                cy.getByTestId('arrival-date-input').clear().type(today).type('{enter}');
+                cy.getByTestId('search-button').click();
+
+                cy.wait('@getFlights');
+                cy.getFlightResults().should('have.length.greaterThan', 0);
+            });
+
+            it('should display all required flight information in results', () => {
+                cy.selectArrivalCity('Москва');
+                cy.getByTestId('arrival-date-input').clear().type(today).type('{enter}');
+                cy.getByTestId('search-button').click();
+
+                cy.wait('@getFlights');
+                cy.getFirstFlightResult().within(() => {
+                    cy.getByTestId('flight-carrier-number').should('be.visible');
+                    cy.getByTestId('flight-status').should('be.visible');
+                    cy.getByTestId('flight-time').should('be.visible');
+                });
+            });
+        });
+
+        describe('Results - Flight Details Modal', () => {
+            it('should open flight details modal on flight click', () => {
+                cy.selectArrivalCity('Москва');
+                cy.getByTestId('arrival-date-input').clear().type(today).type('{enter}');
+                cy.getByTestId('search-button').click();
+
+                cy.wait('@getFlights');
+                cy.getFirstFlightResult().click();
+                cy.getByTestId('flight-details-modal').should('be.visible');
+            });
+
+            it('should display all flight info in modal (number, times, gate, terminal)', () => {
+                cy.selectArrivalCity('Москва');
+                cy.getByTestId('arrival-date-input').clear().type(today).type('{enter}');
+                cy.getByTestId('search-button').click();
+
+                cy.wait('@getFlights');
+                cy.getFirstFlightResult().click();
+
+                cy.getByTestId('flight-details-number').should('be.visible');
+                cy.getByTestId('flight-details-time').should('be.visible');
+                cy.getByTestId('flight-details-gate').should('be.visible');
+                cy.getByTestId('flight-details-terminal').should('be.visible');
+            });
+
+            it('should close modal when clicking X button', () => {
+                cy.selectArrivalCity('Москва');
+                cy.getByTestId('arrival-date-input').clear().type(today).type('{enter}');
+                cy.getByTestId('search-button').click();
+
+                cy.wait('@getFlights');
+                cy.getFirstFlightResult().click();
+                cy.getByTestId('flight-details-modal').should('be.visible');
+
+                cy.getByTestId('modal-close-button').click();
+                cy.getByTestId('flight-details-modal').should('not.be.visible');
+            });
+
+            it('should close modal when pressing Escape key', () => {
+                cy.selectArrivalCity('Москва');
+                cy.getByTestId('arrival-date-input').clear().type(today).type('{enter}');
+                cy.getByTestId('search-button').click();
+
+                cy.wait('@getFlights');
+                cy.getFirstFlightResult().click();
+                cy.getByTestId('flight-details-modal').should('be.visible');
+
+                cy.get('body').type('{esc}');
+                cy.getByTestId('flight-details-modal').should('not.be.visible');
+            });
+
+            it('should close modal when clicking outside modal', () => {
+                cy.selectArrivalCity('Москва');
+                cy.getByTestId('arrival-date-input').clear().type(today).type('{enter}');
+                cy.getByTestId('search-button').click();
+
+                cy.wait('@getFlights');
+                cy.getFirstFlightResult().click();
+                cy.getByTestId('flight-details-modal').should('be.visible');
+
+                cy.getByTestId('modal-backdrop').click({ force: true });
+                cy.getByTestId('flight-details-modal').should('not.be.visible');
+            });
+        });
+
+        describe('Filter Persistence', () => {
+            it('should preserve arrival filters when navigating back', () => {
+                cy.selectArrivalCity('Москва');
+                cy.getByTestId('arrival-date-input').clear().type(today).type('{enter}');
+                cy.getByTestId('search-button').click();
+
+                cy.wait('@getFlights');
+                cy.getFirstFlightResult().click();
+                cy.getByTestId('flight-details-modal').should('be.visible');
+
+                // Navigate back
+                cy.go('back');
+
+                // Filters should still be present
+                cy.getByTestId('city-autocomplete-input-arrival').should('have.value', 'Москва');
+                cy.getByTestId('arrival-date-input').should('have.value', today);
+            });
+        });
+    });
+
+    // ============================================================================
+    // DEPARTURE TAB TESTS (~20 tests)
+    // ============================================================================
+    describe('Departure Tab Tests', () => {
+        beforeEach(() => {
+            cy.getByTestId('departure-tab').click();
+        });
+
+        describe('City Input - Manual Entry', () => {
+            it('should accept manual city entry for departure', () => {
+                cy.getByTestId('city-autocomplete-input-departure')
+                    .clear()
+                    .type('Москва');
+                cy.getByTestId('city-autocomplete-input-departure')
+                    .should('have.value', 'Москва');
+            });
+
+            it('should display dropdown suggestions for departure city', () => {
+                cy.getByTestId('city-autocomplete-input-departure')
+                    .clear()
+                    .type('Мос');
+                cy.getByTestId('city-dropdown-option')
+                    .should('be.visible');
+            });
+
+            it('should filter dropdown options for departure based on input', () => {
+                cy.getByTestId('city-autocomplete-input-departure')
+                    .clear()
+                    .type('Казань');
+                cy.getByTestId('city-dropdown-option')
+                    .contains('Казань')
+                    .should('be.visible');
+            });
+
+            it('should show validation error for empty departure city on search', () => {
+                cy.getByTestId('departure-date-input').clear().type(today).type('{enter}');
+                cy.getByTestId('search-button').click();
+                cy.shouldShowValidationError('City');
+            });
+        });
+
+        describe('City Input - Dropdown Selection', () => {
+            it('should select departure city from dropdown', () => {
+                cy.selectDepartureCity('Москва');
+                cy.getByTestId('city-autocomplete-input-departure')
+                    .should('have.value', 'Москва');
+            });
+
+            it('should display departure city code after selection', () => {
+                cy.selectDepartureCity('Москва');
+                cy.getByTestId('city-code').should('contain', 'MOW');
+            });
+
+            it('should allow switching between different departure cities', () => {
+                cy.selectDepartureCity('Москва');
+                cy.getByTestId('city-code').should('contain', 'MOW');
+
+                cy.getByTestId('city-autocomplete-input-departure').clear().type('Казань');
+                cy.getByTestId('city-dropdown-option').contains('Казань').click();
+                cy.getByTestId('city-code').should('contain', 'KZN');
+            });
+        });
+
+        describe('Date Picker - Valid Dates', () => {
+            it('should accept valid today date for departure', () => {
+                cy.getByTestId('departure-date-input')
+                    .clear()
+                    .type(today)
+                    .type('{enter}');
+                cy.getByTestId('departure-date-input')
+                    .should('have.value', today);
+            });
+
+            it('should accept valid future date for departure', () => {
+                cy.getByTestId('departure-date-input')
+                    .clear()
+                    .type(tomorrow)
+                    .type('{enter}');
+                cy.getByTestId('departure-date-input')
+                    .should('have.value', tomorrow);
+            });
+        });
+
+        describe('Date Picker - Invalid Dates', () => {
+            it('should reject past date for departure', () => {
+                cy.getByTestId('departure-date-input')
+                    .clear()
+                    .type(yesterday);
+                cy.selectDepartureCity('Москва');
+                cy.getByTestId('search-button').click();
+                cy.shouldShowValidationError('date');
+            });
+
+            it('should show validation error when departure date is empty on search', () => {
+                cy.getByTestId('departure-date-input').clear();
+                cy.selectDepartureCity('Москва');
+                cy.getByTestId('search-button').click();
+                cy.shouldShowValidationError('date');
+            });
+        });
+
+        describe('Search - Valid and Error Cases', () => {
+            it('should perform valid departure search', () => {
+                cy.selectDepartureCity('Москва');
+                cy.getByTestId('departure-date-input').clear().type(today).type('{enter}');
+                cy.getByTestId('search-button').click();
+
+                cy.getByTestId('loader').should('be.visible');
+                cy.wait('@getFlights').then(() => {
+                    cy.getByTestId('board-search-result').should('be.visible');
+                });
+            });
+
+            it('should handle network error for departure search', () => {
+                cy.intercept('GET', '**/api/flights/v1.1/**', {
+                    statusCode: 500,
+                }).as('getFlightsError');
+
+                cy.selectDepartureCity('Москва');
+                cy.getByTestId('departure-date-input').clear().type(today).type('{enter}');
+                cy.getByTestId('search-button').click();
+
+                cy.wait('@getFlightsError');
+                cy.getByTestId('error-message').should('be.visible');
+            });
+
+            it('should show loading state during departure search', () => {
+                cy.intercept('GET', '**/api/flights/v1.1/**', (req) => {
+                    req.reply((res) => {
+                        res.delay(1000);
+                    });
+                }).as('getFlightsSlow');
+
+                cy.selectDepartureCity('Москва');
+                cy.getByTestId('departure-date-input').clear().type(today).type('{enter}');
+                cy.getByTestId('search-button').click();
+
+                cy.getByTestId('loader').should('be.visible');
+            });
+        });
+
+        describe('Results - Flight List', () => {
+            it('should render departure flight list after successful search', () => {
+                cy.selectDepartureCity('Москва');
+                cy.getByTestId('departure-date-input').clear().type(today).type('{enter}');
+                cy.getByTestId('search-button').click();
+
+                cy.wait('@getFlights');
+                cy.getFlightResults().should('have.length.greaterThan', 0);
+            });
+
+            it('should display required flight information in departure results', () => {
+                cy.selectDepartureCity('Москва');
+                cy.getByTestId('departure-date-input').clear().type(today).type('{enter}');
+                cy.getByTestId('search-button').click();
+
+                cy.wait('@getFlights');
+                cy.getFirstFlightResult().within(() => {
+                    cy.getByTestId('flight-carrier-number').should('be.visible');
+                    cy.getByTestId('flight-status').should('be.visible');
+                });
+            });
+        });
+
+        describe('Results - Flight Details Modal for Departure', () => {
+            it('should open flight details modal for departure flight', () => {
+                cy.selectDepartureCity('Москва');
+                cy.getByTestId('departure-date-input').clear().type(today).type('{enter}');
+                cy.getByTestId('search-button').click();
+
+                cy.wait('@getFlights');
+                cy.getFirstFlightResult().click();
+                cy.getByTestId('flight-details-modal').should('be.visible');
+            });
+
+            it('should display complete flight details for departure', () => {
+                cy.selectDepartureCity('Москва');
+                cy.getByTestId('departure-date-input').clear().type(today).type('{enter}');
+                cy.getByTestId('search-button').click();
+
+                cy.wait('@getFlights');
+                cy.getFirstFlightResult().click();
+
+                cy.getByTestId('flight-details-number').should('be.visible');
+                cy.getByTestId('flight-details-gate').should('be.visible');
+                cy.getByTestId('flight-details-terminal').should('be.visible');
+            });
+
+            it('should close departure flight details modal on X click', () => {
+                cy.selectDepartureCity('Москва');
+                cy.getByTestId('departure-date-input').clear().type(today).type('{enter}');
+                cy.getByTestId('search-button').click();
+
+                cy.wait('@getFlights');
+                cy.getFirstFlightResult().click();
+                cy.getByTestId('flight-details-modal').should('be.visible');
+
+                cy.getByTestId('modal-close-button').click();
+                cy.getByTestId('flight-details-modal').should('not.be.visible');
+            });
+        });
+
+        describe('Filter Persistence for Departure', () => {
+            it('should preserve departure filters when navigating back', () => {
+                cy.selectDepartureCity('Москва');
+                cy.getByTestId('departure-date-input').clear().type(today).type('{enter}');
+                cy.getByTestId('search-button').click();
+
+                cy.wait('@getFlights');
+                cy.getFirstFlightResult().click();
+
+                cy.go('back');
+
+                cy.getByTestId('city-autocomplete-input-departure').should('have.value', 'Москва');
+                cy.getByTestId('departure-date-input').should('have.value', today);
+            });
+        });
+    });
+
+    // ============================================================================
+    // TAB SWITCHING TESTS (~5 tests)
+    // ============================================================================
+    describe('Tab Switching Tests', () => {
+        it('should switch from arrival tab to departure tab', () => {
+            cy.getByTestId('arrival-tab').should('have.class', 'active');
+            cy.getByTestId('departure-tab').click();
+            cy.getByTestId('departure-tab').should('have.class', 'active');
+        });
+
+        it('should switch from departure tab back to arrival tab', () => {
+            cy.getByTestId('departure-tab').click();
+            cy.getByTestId('departure-tab').should('have.class', 'active');
+            cy.getByTestId('arrival-tab').click();
+            cy.getByTestId('arrival-tab').should('have.class', 'active');
+        });
+
+        it('should maintain separate state for arrival and departure tabs', () => {
+            // Set arrival filter
+            cy.selectArrivalCity('Москва');
+            cy.getByTestId('city-autocomplete-input-arrival').should('have.value', 'Москва');
+
+            // Switch to departure
+            cy.getByTestId('departure-tab').click();
+            cy.getByTestId('city-autocomplete-input-departure').should('have.value', '');
+
+            // Switch back to arrival
+            cy.getByTestId('arrival-tab').click();
+            cy.getByTestId('city-autocomplete-input-arrival').should('have.value', 'Москва');
+        });
+
+        it('should preserve departure state when switching tabs', () => {
+            cy.getByTestId('departure-tab').click();
+            cy.selectDepartureCity('Казань');
+            cy.getByTestId('city-autocomplete-input-departure').should('have.value', 'Казань');
+
+            cy.getByTestId('arrival-tab').click();
+            cy.getByTestId('departure-tab').click();
+
+            cy.getByTestId('city-autocomplete-input-departure').should('have.value', 'Казань');
+        });
+    });
+
+    // ============================================================================
+    // FLIGHT NUMBER FILTER TESTS (~15 tests)
+    // ============================================================================
+    describe('Flight Number Filter Tests', () => {
+        describe('Basic Flight Number Filtering', () => {
+            it('should filter results by flight number', () => {
+                cy.selectArrivalCity('Москва');
+                cy.getByTestId('arrival-date-input').clear().type(today).type('{enter}');
+                cy.getByTestId('search-button').click();
+
+                cy.wait('@getFlights');
+                cy.getByTestId('flight-number-filter').clear().type('SU001');
+
+                cy.getFlightResults().should('have.length', 1);
+                cy.getFirstFlightResult().should('contain', 'SU001');
+            });
+
+            it('should filter flights by partial flight number', () => {
+                cy.selectArrivalCity('Москва');
+                cy.getByTestId('arrival-date-input').clear().type(today).type('{enter}');
+                cy.getByTestId('search-button').click();
+
+                cy.wait('@getFlights');
+                cy.getByTestId('flight-number-filter').clear().type('001');
+
+                cy.getFlightResults().should('have.length', 1);
+            });
+
+            it('should handle no results when filtering by non-existent flight number', () => {
+                cy.selectArrivalCity('Москва');
+                cy.getByTestId('arrival-date-input').clear().type(today).type('{enter}');
+                cy.getByTestId('search-button').click();
+
+                cy.wait('@getFlights');
+                cy.getByTestId('flight-number-filter').clear().type('ZZ999');
+
+                cy.getByTestId('no-results-message').should('be.visible');
+                cy.getFlightResults().should('have.length', 0);
+            });
+
+            it('should be case-insensitive when filtering flight numbers', () => {
+                cy.selectArrivalCity('Москва');
+                cy.getByTestId('arrival-date-input').clear().type(today).type('{enter}');
+                cy.getByTestId('search-button').click();
+
+                cy.wait('@getFlights');
+                cy.getByTestId('flight-number-filter').clear().type('su001');
+
+                cy.getFlightResults().should('have.length', 1);
+                cy.getFirstFlightResult().should('contain', 'SU001');
+            });
+        });
+
+        describe('Flight Number Filter - Special Characters', () => {
+            it('should handle special characters in flight number filter gracefully', () => {
+                cy.selectArrivalCity('Москва');
+                cy.getByTestId('arrival-date-input').clear().type(today).type('{enter}');
+                cy.getByTestId('search-button').click();
+
+                cy.wait('@getFlights');
+                cy.getByTestId('flight-number-filter').clear().type('SU@001');
+
+                // Should not crash, display no results or handle gracefully
+                cy.getByTestId('flight-number-filter').should('exist');
+            });
+
+            it('should handle empty flight number filter (no filter applied)', () => {
+                cy.selectArrivalCity('Москва');
+                cy.getByTestId('arrival-date-input').clear().type(today).type('{enter}');
+                cy.getByTestId('search-button').click();
+
+                cy.wait('@getFlights');
+                cy.getFlightResults().should('have.length.greaterThan', 0);
+            });
+
+            it('should ignore leading/trailing spaces in flight number filter', () => {
+                cy.selectArrivalCity('Москва');
+                cy.getByTestId('arrival-date-input').clear().type(today).type('{enter}');
+                cy.getByTestId('search-button').click();
+
+                cy.wait('@getFlights');
+                cy.getByTestId('flight-number-filter').clear().type('  SU001  ');
+
+                cy.getFlightResults().should('have.length', 1);
+            });
+        });
+
+        describe('Flight Number Filter - Clear Filter', () => {
+            it('should clear flight number filter', () => {
+                cy.selectArrivalCity('Москва');
+                cy.getByTestId('arrival-date-input').clear().type(today).type('{enter}');
+                cy.getByTestId('search-button').click();
+
+                cy.wait('@getFlights');
+                cy.getFlightResults().then((flights) => {
+                    const initialCount = flights.length;
+
+                    cy.getByTestId('flight-number-filter').clear().type('SU001');
+                    cy.getFlightResults().should('have.length', 1);
+
+                    cy.getByTestId('flight-number-filter').clear();
+                    cy.getFlightResults().should('have.length', initialCount);
+                });
+            });
+
+            it('should reset filter when clicking clear button', () => {
+                cy.selectArrivalCity('Москва');
+                cy.getByTestId('arrival-date-input').clear().type(today).type('{enter}');
+                cy.getByTestId('search-button').click();
+
+                cy.wait('@getFlights');
+                cy.getByTestId('flight-number-filter').clear().type('SU001');
+                cy.getFlightResults().should('have.length', 1);
+
+                cy.getByTestId('clear-flight-filter-button').click();
+                cy.getByTestId('flight-number-filter').should('have.value', '');
+                cy.getFlightResults().should('have.length.greaterThan', 1);
+            });
+
+            it('should update results in real-time as user types in flight number filter', () => {
+                cy.selectArrivalCity('Москва');
+                cy.getByTestId('arrival-date-input').clear().type(today).type('{enter}');
+                cy.getByTestId('search-button').click();
+
+                cy.wait('@getFlights');
+                cy.getFlightResults().then((flights) => {
+                    const initialCount = flights.length;
+
+                    cy.getByTestId('flight-number-filter').type('0');
+                    cy.getFlightResults().should('have.length.lessThan', initialCount);
+
+                    cy.getByTestId('flight-number-filter').type('01');
+                    cy.getFlightResults().should('have.length', 1);
+                });
+            });
+        });
+
+        describe('Flight Number Filter - Integration with Other Filters', () => {
+            it('should combine flight number filter with date filter', () => {
+                cy.selectArrivalCity('Москва');
+                cy.getByTestId('arrival-date-input').clear().type(today).type('{enter}');
+                cy.getByTestId('search-button').click();
+
+                cy.wait('@getFlights');
+                cy.getFlightResults().should('have.length.greaterThan', 0);
+
+                cy.getByTestId('flight-number-filter').clear().type('SU001');
+                cy.getFlightResults().should('have.length', 1);
+
+                // Change date and verify filter still works
+                cy.getByTestId('arrival-date-input').clear().type(tomorrow).type('{enter}');
+                cy.getByTestId('flight-number-filter').should('have.value', 'SU001');
+            });
+
+            it('should preserve flight number filter when switching between tabs', () => {
+                cy.selectArrivalCity('Москва');
+                cy.getByTestId('arrival-date-input').clear().type(today).type('{enter}');
+                cy.getByTestId('search-button').click();
+
+                cy.wait('@getFlights');
+                cy.getByTestId('flight-number-filter').clear().type('SU001');
+
+                cy.getByTestId('departure-tab').click();
+                cy.getByTestId('arrival-tab').click();
+
+                // Filter might not persist across tabs, but should not crash
+                cy.getByTestId('flight-number-filter').should('exist');
+            });
+        });
+    });
+
+    // ============================================================================
+    // FLIGHT DETAILS MODAL TESTS (~15 tests)
+    // ============================================================================
+    describe('Flight Details Modal Tests', () => {
+        describe('Modal Opening and Closing', () => {
+            it('should open modal when clicking on flight result', () => {
+                cy.selectArrivalCity('Москва');
+                cy.getByTestId('arrival-date-input').clear().type(today).type('{enter}');
+                cy.getByTestId('search-button').click();
+
+                cy.wait('@getFlights');
+                cy.getFirstFlightResult().click();
+                cy.getByTestId('flight-details-modal').should('be.visible');
+            });
+
+            it('should close modal with close button (X)', () => {
+                cy.selectArrivalCity('Москва');
+                cy.getByTestId('arrival-date-input').clear().type(today).type('{enter}');
+                cy.getByTestId('search-button').click();
+
+                cy.wait('@getFlights');
+                cy.getFirstFlightResult().click();
+                cy.getByTestId('flight-details-modal').should('be.visible');
+
+                cy.getByTestId('modal-close-button').click();
+                cy.getByTestId('flight-details-modal').should('not.exist');
+            });
+
+            it('should close modal when pressing Escape key', () => {
+                cy.selectArrivalCity('Москва');
+                cy.getByTestId('arrival-date-input').clear().type(today).type('{enter}');
+                cy.getByTestId('search-button').click();
+
+                cy.wait('@getFlights');
+                cy.getFirstFlightResult().click();
+                cy.getByTestId('flight-details-modal').should('be.visible');
+
+                cy.get('body').type('{esc}');
+                cy.getByTestId('flight-details-modal').should('not.exist');
+            });
+
+            it('should close modal when clicking outside (backdrop)', () => {
+                cy.selectArrivalCity('Москва');
+                cy.getByTestId('arrival-date-input').clear().type(today).type('{enter}');
+                cy.getByTestId('search-button').click();
+
+                cy.wait('@getFlights');
+                cy.getFirstFlightResult().click();
+                cy.getByTestId('flight-details-modal').should('be.visible');
+
+                cy.getByTestId('modal-backdrop').click({ force: true });
+                cy.getByTestId('flight-details-modal').should('not.exist');
+            });
+        });
+
+        describe('Modal Content - Flight Information Display', () => {
+            it('should display flight number in modal', () => {
+                cy.selectArrivalCity('Москва');
+                cy.getByTestId('arrival-date-input').clear().type(today).type('{enter}');
+                cy.getByTestId('search-button').click();
+
+                cy.wait('@getFlights');
+                cy.getFirstFlightResult().click();
+
+                cy.getByTestId('flight-details-number').should('be.visible')
+                    .should('contain', 'SU');
+            });
+
+            it('should display estimated arrival time in modal', () => {
+                cy.selectArrivalCity('Москва');
+                cy.getByTestId('arrival-date-input').clear().type(today).type('{enter}');
+                cy.getByTestId('search-button').click();
+
+                cy.wait('@getFlights');
+                cy.getFirstFlightResult().click();
+
+                cy.getByTestId('flight-details-time').should('be.visible');
+            });
+
+            it('should display gate information in modal', () => {
+                cy.selectArrivalCity('Москва');
+                cy.getByTestId('arrival-date-input').clear().type(today).type('{enter}');
+                cy.getByTestId('search-button').click();
+
+                cy.wait('@getFlights');
+                cy.getFirstFlightResult().click();
+
+                cy.getByTestId('flight-details-gate').should('be.visible')
+                    .should('contain', 'Gate');
+            });
+
+            it('should display terminal information in modal', () => {
+                cy.selectArrivalCity('Москва');
+                cy.getByTestId('arrival-date-input').clear().type(today).type('{enter}');
+                cy.getByTestId('search-button').click();
+
+                cy.wait('@getFlights');
+                cy.getFirstFlightResult().click();
+
+                cy.getByTestId('flight-details-terminal').should('be.visible')
+                    .should('contain', 'Terminal');
+            });
+
+            it('should display flight status in modal', () => {
+                cy.selectArrivalCity('Москва');
+                cy.getByTestId('arrival-date-input').clear().type(today).type('{enter}');
+                cy.getByTestId('search-button').click();
+
+                cy.wait('@getFlights');
+                cy.getFirstFlightResult().click();
+
+                cy.getByTestId('flight-details-status').should('be.visible');
+            });
+
+            it('should display aircraft type in modal', () => {
+                cy.selectArrivalCity('Москва');
+                cy.getByTestId('arrival-date-input').clear().type(today).type('{enter}');
+                cy.getByTestId('search-button').click();
+
+                cy.wait('@getFlights');
+                cy.getFirstFlightResult().click();
+
+                cy.getByTestId('flight-details-aircraft').should('be.visible');
+            });
+        });
+
+        describe('Modal Navigation', () => {
+            it('should navigate to next flight using next button in modal', () => {
+                cy.selectArrivalCity('Москва');
+                cy.getByTestId('arrival-date-input').clear().type(today).type('{enter}');
+                cy.getByTestId('search-button').click();
+
+                cy.wait('@getFlights');
+                cy.getFirstFlightResult().click();
+
+                const firstFlightNumber = cy.getByTestId('flight-details-number');
+                cy.getByTestId('modal-next-button').click();
+
+                cy.getByTestId('flight-details-number')
+                    .should('not.equal', firstFlightNumber);
+            });
+
+            it('should navigate to previous flight using prev button in modal', () => {
+                cy.selectArrivalCity('Москва');
+                cy.getByTestId('arrival-date-input').clear().type(today).type('{enter}');
+                cy.getByTestId('search-button').click();
+
+                cy.wait('@getFlights');
+                cy.getFlightResults().then((flights) => {
+                    if (flights.length > 1) {
+                        cy.getByTestId('flight-result').eq(1).click();
+                        cy.getByTestId('modal-prev-button').click();
+                        cy.getByTestId('flight-details-modal').should('be.visible');
+                    }
+                });
+            });
+
+            it('should disable prev button on first flight', () => {
+                cy.selectArrivalCity('Москва');
+                cy.getByTestId('arrival-date-input').clear().type(today).type('{enter}');
+                cy.getByTestId('search-button').click();
+
+                cy.wait('@getFlights');
+                cy.getFirstFlightResult().click();
+
+                cy.getByTestId('modal-prev-button').should('be.disabled');
+            });
+
+            it('should disable next button on last flight', () => {
+                cy.selectArrivalCity('Москва');
+                cy.getByTestId('arrival-date-input').clear().type(today).type('{enter}');
+                cy.getByTestId('search-button').click();
+
+                cy.wait('@getFlights');
+                cy.getFlightResults().then((flights) => {
+                    cy.getByTestId('flight-result').eq(flights.length - 1).click();
+                    cy.getByTestId('modal-next-button').should('be.disabled');
+                });
+            });
+        });
+
+        describe('Modal Display and Responsiveness', () => {
+            it('should center modal on screen', () => {
+                cy.selectArrivalCity('Москва');
+                cy.getByTestId('arrival-date-input').clear().type(today).type('{enter}');
+                cy.getByTestId('search-button').click();
+
+                cy.wait('@getFlights');
+                cy.getFirstFlightResult().click();
+
+                cy.getByTestId('flight-details-modal').should('be.visible');
+                cy.getByTestId('flight-details-modal')
+                    .should('have.css', 'position')
+                    .and('match', /absolute|fixed/);
+            });
+
+            it('should prevent scrolling on body when modal is open', () => {
+                cy.selectArrivalCity('Москва');
+                cy.getByTestId('arrival-date-input').clear().type(today).type('{enter}');
+                cy.getByTestId('search-button').click();
+
+                cy.wait('@getFlights');
+                cy.getFirstFlightResult().click();
+
+                cy.get('body').should('have.css', 'overflow', 'hidden');
+            });
+
+            it('should restore body scrolling when modal closes', () => {
+                cy.selectArrivalCity('Москва');
+                cy.getByTestId('arrival-date-input').clear().type(today).type('{enter}');
+                cy.getByTestId('search-button').click();
+
+                cy.wait('@getFlights');
+                cy.getFirstFlightResult().click();
+                cy.getByTestId('modal-close-button').click();
+
+                cy.get('body').should('not.have.css', 'overflow', 'hidden');
+            });
+        });
+    });
+});
diff --git a/ClientApp/cypress/integration/features/schedule.cy.ts b/ClientApp/cypress/integration/features/schedule.cy.ts
new file mode 100644
index 00000000..0c773976
--- /dev/null
+++ b/ClientApp/cypress/integration/features/schedule.cy.ts
@@ -0,0 +1,640 @@
+import * as moment from 'moment';
+
+/**
+ * Mock schedule results for testing
+ */
+const MOCK_SCHEDULE_RESULTS = [
+    {
+        flightNumber: 'SU1001',
+        carrier: 'SU',
+        number: '1001',
+        departure: 'Москва',
+        departureCode: 'MOW',
+        arrival: 'Санкт-Петербург',
+        arrivalCode: 'LED',
+        departureTime: '09:00',
+        arrivalTime: '10:30',
+        duration: '1h 30m',
+        aircraft: 'A320',
+        price: 3500,
+        stops: 0,
+        operating: 'SU',
+        flightStatus: 'On Schedule',
+    },
+    {
+        flightNumber: 'SU1002',
+        carrier: 'SU',
+        number: '1002',
+        departure: 'Москва',
+        departureCode: 'MOW',
+        arrival: 'Санкт-Петербург',
+        arrivalCode: 'LED',
+        departureTime: '12:15',
+        arrivalTime: '13:45',
+        duration: '1h 30m',
+        aircraft: 'A330',
+        price: 4200,
+        stops: 0,
+        operating: 'SU',
+        flightStatus: 'On Schedule',
+    },
+    {
+        flightNumber: 'SU1003',
+        carrier: 'SU',
+        number: '1003',
+        departure: 'Москва',
+        departureCode: 'MOW',
+        arrival: 'Санкт-Петербург',
+        arrivalCode: 'LED',
+        departureTime: '15:30',
+        arrivalTime: '17:00',
+        duration: '1h 30m',
+        aircraft: 'B737',
+        price: 2800,
+        stops: 0,
+        operating: 'SU',
+        flightStatus: 'On Schedule',
+    },
+    {
+        flightNumber: 'SU1004',
+        carrier: 'SU',
+        number: '1004',
+        departure: 'Москва',
+        departureCode: 'MOW',
+        arrival: 'Санкт-Петербург',
+        arrivalCode: 'LED',
+        departureTime: '18:45',
+        arrivalTime: '20:15',
+        duration: '1h 30m',
+        aircraft: 'A320',
+        price: 3100,
+        stops: 0,
+        operating: 'SU',
+        flightStatus: 'On Schedule',
+    },
+    {
+        flightNumber: 'SU1005',
+        carrier: 'SU',
+        number: '1005',
+        departure: 'Москва',
+        departureCode: 'MOW',
+        arrival: 'Санкт-Петербург',
+        arrivalCode: 'LED',
+        departureTime: '21:00',
+        arrivalTime: '22:30',
+        duration: '1h 30m',
+        aircraft: 'A320',
+        price: 3000,
+        stops: 0,
+        operating: 'SU',
+        flightStatus: 'On Schedule',
+    },
+];
+
+const MOCK_FLIGHT_DETAILS = {
+    flightNumber: 'SU1001',
+    carrier: 'SU',
+    number: '1001',
+    departure: 'Москва',
+    departureCode: 'MOW',
+    departureTime: '09:00',
+    departureTerminal: 'A',
+    departureGate: '5',
+    departureCheckIn: '07:00-08:45',
+    arrival: 'Санкт-Петербург',
+    arrivalCode: 'LED',
+    arrivalTime: '10:30',
+    arrivalTerminal: 'B',
+    arrivalGate: '12',
+    duration: '1h 30m',
+    aircraft: 'A320',
+    aircraftCode: 'A20',
+    boardingTime: '08:30',
+    price: 3500,
+    stops: 0,
+    operating: 'SU',
+    flightStatus: 'On Schedule',
+};
+
+describe('Расписание: Комплексные тесты', () => {
+    const route = {
+        departureCity: {
+            name: 'Москва',
+            code: 'MOW',
+            latitude: 55.7558,
+            longitude: 37.62,
+        },
+        arrivalCity: {
+            name: 'Санкт-Петербург',
+            code: 'LED',
+            latitude: 59.9311,
+            longitude: 30.3609,
+        },
+        alternateArrivalCity: {
+            name: 'Сочи',
+            code: 'AER',
+            latitude: 43.4391,
+            longitude: 39.9566,
+        },
+    };
+
+    beforeEach(() => {
+        cy.intercept('GET', '**/api/flights/1/ru/schedule**', MOCK_SCHEDULE_RESULTS).as('getSchedule');
+        cy.intercept('GET', '**/api/flights/1/ru/schedule/details**', MOCK_FLIGHT_DETAILS).as('getFlightDetails');
+        cy.intercept('GET', '**/api/cities/**', {
+            statusCode: 200,
+            body: [route.departureCity, route.arrivalCity, route.alternateArrivalCity],
+        }).as('getCities');
+        cy.mockGeolocation(route.departureCity);
+        cy.visit('/ru-ru/schedule');
+    });
+
+    // ============================================================
+    // SEARCH PAGE TESTS (~25 tests)
+    // ============================================================
+
+    describe('Search Page - Origin Autocomplete', () => {
+        it('Should allow manual entry of origin city', () => {
+            cy.getByTestId('schedule-departure-city-input').type('Москва').type('{enter}');
+            cy.getByTestId('schedule-departure-city-input').getByTestId('city-code').should('contain', 'MOW');
+        });
+
+        it('Should filter origin cities as user types', () => {
+            cy.getByTestId('schedule-departure-city-input').type('М');
+            cy.getByTestId('city-dropdown-option').should('have.length.at.least', 1);
+        });
+
+        it('Should select origin city from dropdown', () => {
+            cy.getByTestId('schedule-departure-city-input').type('Мо');
+            cy.getByTestId('city-dropdown-option').first().click();
+            cy.getByTestId('schedule-departure-city-input').getByTestId('city-code').should('contain', 'MOW');
+        });
+
+        it('Should clear origin city selection', () => {
+            cy.getByTestId('schedule-departure-city-input').type('Москва');
+            cy.getByTestId('schedule-departure-city-input').parent().find('[class*="clear"]').click({ force: true });
+            cy.getByTestId('schedule-departure-city-input').should('have.value', '');
+        });
+
+        it('Should validate that origin city is required', () => {
+            cy.getByTestId('schedule-arrival-city-input').type('Санкт-Петербург');
+            cy.getByTestId('schedule-search-button').click();
+            cy.getByTestId('validation-error').should('be.visible');
+        });
+
+        it('Should display origin city code after selection', () => {
+            cy.getByTestId('schedule-departure-city-input').type('Москва').type('{enter}');
+            cy.getByTestId('city-code').contains('MOW').should('be.visible');
+        });
+
+        it('Should handle rapid typing in origin field', () => {
+            cy.getByTestId('schedule-departure-city-input').type('М', { delay: 10 }).type('о', { delay: 10 });
+            cy.getByTestId('city-dropdown-option').should('have.length.at.least', 1);
+        });
+
+        it('Should preserve origin city when navigating to details', () => {
+            cy.getByTestId('schedule-departure-city-input').type('Москва').type('{enter}');
+            cy.wait(200);
+            cy.getByTestId('schedule-arrival-city-input').type('Санкт-Петербург').type('{enter}');
+            cy.getByTestId('schedule-search-button').click();
+            cy.wait('@getSchedule');
+            cy.getByTestId('schedule-search-result').first().click();
+            cy.url().should('include', 'details');
+        });
+    });
+
+    describe('Search Page - Destination Autocomplete', () => {
+        it('Should allow manual entry of destination city', () => {
+            cy.getByTestId('schedule-arrival-city-input').type('Санкт-Петербург').type('{enter}');
+            cy.getByTestId('schedule-arrival-city-input').getByTestId('city-code').should('contain', 'LED');
+        });
+
+        it('Should filter destination cities as user types', () => {
+            cy.getByTestId('schedule-arrival-city-input').type('С');
+            cy.getByTestId('city-dropdown-option').should('have.length.at.least', 1);
+        });
+
+        it('Should select destination city from dropdown', () => {
+            cy.getByTestId('schedule-arrival-city-input').type('Са');
+            cy.getByTestId('city-dropdown-option').first().click();
+            cy.getByTestId('schedule-arrival-city-input').getByTestId('city-code').should('be.visible');
+        });
+
+        it('Should clear destination city selection', () => {
+            cy.getByTestId('schedule-arrival-city-input').type('Санкт-Петербург');
+            cy.getByTestId('schedule-arrival-city-input').parent().find('[class*="clear"]').click({ force: true });
+            cy.getByTestId('schedule-arrival-city-input').should('have.value', '');
+        });
+
+        it('Should validate that destination city is required', () => {
+            cy.getByTestId('schedule-departure-city-input').type('Москва');
+            cy.getByTestId('schedule-search-button').click();
+            cy.getByTestId('validation-error').should('be.visible');
+        });
+
+        it('Should prevent same city for origin and destination', () => {
+            cy.getByTestId('schedule-departure-city-input').type('Москва').type('{enter}');
+            cy.wait(200);
+            cy.getByTestId('schedule-arrival-city-input').type('Москва').type('{enter}');
+            cy.getByTestId('validation-error').should('contain', 'одинаков');
+        });
+
+        it('Should display destination city code after selection', () => {
+            cy.getByTestId('schedule-arrival-city-input').type('Санкт-Петербург').type('{enter}');
+            cy.getByTestId('city-code').contains('LED').should('be.visible');
+        });
+    });
+
+    describe('Search Page - Date Range Picker', () => {
+        it('Should set start date using date picker', () => {
+            const startDate = moment().format('DD.MM.YYYY');
+            cy.getByTestId('schedule-calendar').first().clear().type(startDate).type('{enter}');
+            cy.getByTestId('schedule-calendar').first().should('have.value', startDate);
+        });
+
+        it('Should set end date using date picker', () => {
+            const endDate = moment().add(7, 'days').format('DD.MM.YYYY');
+            cy.getByTestId('schedule-calendar').last().clear().type(endDate).type('{enter}');
+            cy.getByTestId('schedule-calendar').last().should('have.value', endDate);
+        });
+
+        it('Should allow single-day range', () => {
+            const singleDate = moment().format('DD.MM.YYYY');
+            cy.getByTestId('schedule-calendar').first().clear().type(singleDate).type('{enter}');
+            cy.getByTestId('schedule-calendar').last().clear().type(singleDate).type('{enter}');
+            cy.getByTestId('schedule-calendar').first().should('have.value', singleDate);
+            cy.getByTestId('schedule-calendar').last().should('have.value', singleDate);
+        });
+
+        it('Should allow full range selection (7 days)', () => {
+            const startDate = moment().format('DD.MM.YYYY');
+            const endDate = moment().add(7, 'days').format('DD.MM.YYYY');
+            cy.getByTestId('schedule-calendar').first().clear().type(startDate).type('{enter}');
+            cy.getByTestId('schedule-calendar').last().clear().type(endDate).type('{enter}');
+            cy.getByTestId('schedule-calendar').first().should('have.value', startDate);
+            cy.getByTestId('schedule-calendar').last().should('have.value', endDate);
+        });
+
+        it('Should reject end date before start date', () => {
+            const endDate = moment().format('DD.MM.YYYY');
+            const startDate = moment().add(7, 'days').format('DD.MM.YYYY');
+            cy.getByTestId('schedule-calendar').first().clear().type(startDate).type('{enter}');
+            cy.getByTestId('schedule-calendar').last().clear().type(endDate).type('{enter}');
+            cy.getByTestId('validation-error').should('be.visible');
+        });
+
+        it('Should use today as default start date', () => {
+            cy.getByTestId('schedule-calendar').first().should('have.value', moment().format('DD.MM.YYYY'));
+        });
+
+        it('Should prevent date in the past', () => {
+            const pastDate = moment().subtract(1, 'days').format('DD.MM.YYYY');
+            cy.getByTestId('schedule-calendar').first().clear().type(pastDate).type('{enter}');
+            cy.getByTestId('validation-error').should('be.visible');
+        });
+
+        it('Should allow date selection via calendar popup', () => {
+            cy.getByTestId('schedule-calendar').first().click();
+            cy.get('[class*="calendar"]').find('[class*="day"]').contains(moment().date().toString()).click({ force: true });
+            cy.getByTestId('schedule-calendar').first().should('have.value', moment().format('DD.MM.YYYY'));
+        });
+    });
+
+    describe('Search Page - Form Submission', () => {
+        it('Should submit valid search form', () => {
+            cy.getByTestId('schedule-departure-city-input').type('Москва').type('{enter}');
+            cy.wait(200);
+            cy.getByTestId('schedule-arrival-city-input').type('Санкт-Петербург').type('{enter}');
+            cy.getByTestId('schedule-search-button').click();
+            cy.wait('@getSchedule');
+            cy.getByTestId('schedule-search-results').should('be.visible');
+        });
+
+        it('Should show loading indicator during search', () => {
+            cy.getByTestId('schedule-departure-city-input').type('Москва').type('{enter}');
+            cy.wait(200);
+            cy.getByTestId('schedule-arrival-city-input').type('Санкт-Петербург').type('{enter}');
+            cy.getByTestId('schedule-search-button').click();
+            cy.getByTestId('loader').should('be.visible');
+        });
+
+        it('Should display error on network failure', () => {
+            cy.intercept('GET', '**/api/flights/1/ru/schedule**', { statusCode: 500 }).as('getScheduleError');
+            cy.getByTestId('schedule-departure-city-input').type('Москва').type('{enter}');
+            cy.wait(200);
+            cy.getByTestId('schedule-arrival-city-input').type('Санкт-Петербург').type('{enter}');
+            cy.getByTestId('schedule-search-button').click();
+            cy.wait('@getScheduleError');
+            cy.getByTestId('error-message').should('be.visible');
+        });
+
+        it('Should handle empty search results', () => {
+            cy.intercept('GET', '**/api/flights/1/ru/schedule**', []).as('getScheduleEmpty');
+            cy.getByTestId('schedule-departure-city-input').type('Москва').type('{enter}');
+            cy.wait(200);
+            cy.getByTestId('schedule-arrival-city-input').type('Санкт-Петербург').type('{enter}');
+            cy.getByTestId('schedule-search-button').click();
+            cy.wait('@getScheduleEmpty');
+            cy.getByTestId('empty-results-message').should('be.visible');
+        });
+
+        it('Should not submit with missing origin city', () => {
+            cy.getByTestId('schedule-arrival-city-input').type('Санкт-Петербург').type('{enter}');
+            cy.getByTestId('schedule-search-button').click();
+            cy.get('@getSchedule.all').should('have.length', 0);
+        });
+
+        it('Should not submit with missing destination city', () => {
+            cy.getByTestId('schedule-departure-city-input').type('Москва').type('{enter}');
+            cy.getByTestId('schedule-search-button').click();
+            cy.get('@getSchedule.all').should('have.length', 0);
+        });
+
+        it('Should display correct URL after search', () => {
+            cy.getByTestId('schedule-departure-city-input').type('Москва').type('{enter}');
+            cy.wait(200);
+            cy.getByTestId('schedule-arrival-city-input').type('Санкт-Петербург').type('{enter}');
+            cy.getByTestId('schedule-search-button').click();
+            cy.wait('@getSchedule');
+            cy.url().should('include', 'schedule');
+        });
+
+        it('Should enable search button only when form is valid', () => {
+            cy.getByTestId('schedule-search-button').should('be.disabled');
+            cy.getByTestId('schedule-departure-city-input').type('Москва').type('{enter}');
+            cy.wait(200);
+            cy.getByTestId('schedule-search-button').should('be.disabled');
+            cy.getByTestId('schedule-arrival-city-input').type('Санкт-Петербург').type('{enter}');
+            cy.wait(200);
+            cy.getByTestId('schedule-search-button').should('be.enabled');
+        });
+    });
+
+    // ============================================================
+    // FLIGHT DETAILS PAGE TESTS (~20 tests)
+    // ============================================================
+
+    describe('Flight Details Page - Flight Information', () => {
+        beforeEach(() => {
+            cy.getByTestId('schedule-departure-city-input').type('Москва').type('{enter}');
+            cy.wait(200);
+            cy.getByTestId('schedule-arrival-city-input').type('Санкт-Петербург').type('{enter}');
+            cy.getByTestId('schedule-search-button').click();
+            cy.wait('@getSchedule');
+            cy.getByTestId('schedule-search-result').first().click();
+            cy.wait('@getFlightDetails');
+        });
+
+        it('Should display flight number', () => {
+            cy.getByTestId('flight-details-number').should('contain', 'SU');
+        });
+
+        it('Should display departure information', () => {
+            cy.getByTestId('flight-departure-time').should('be.visible');
+            cy.getByTestId('flight-departure-city').should('contain', 'Москва');
+        });
+
+        it('Should display arrival information', () => {
+            cy.getByTestId('flight-arrival-time').should('be.visible');
+            cy.getByTestId('flight-arrival-city').should('contain', 'Санкт-Петербург');
+        });
+
+        it('Should display flight duration', () => {
+            cy.getByTestId('flight-duration').should('contain', 'h');
+        });
+
+        it('Should display aircraft type', () => {
+            cy.getByTestId('flight-aircraft').should('contain', 'A320');
+        });
+
+        it('Should display airline logo', () => {
+            cy.getByTestId('flight-company-logo').should('be.visible');
+        });
+
+        it('Should display price information', () => {
+            cy.getByTestId('flight-price').should('be.visible').should('contain', '3500');
+        });
+
+        it('Should display number of stops', () => {
+            cy.getByTestId('flight-stops').should('contain', '0');
+        });
+    });
+
+    describe('Flight Details Page - Timing Details', () => {
+        beforeEach(() => {
+            cy.getByTestId('schedule-departure-city-input').type('Москва').type('{enter}');
+            cy.wait(200);
+            cy.getByTestId('schedule-arrival-city-input').type('Санкт-Петербург').type('{enter}');
+            cy.getByTestId('schedule-search-button').click();
+            cy.wait('@getSchedule');
+            cy.getByTestId('schedule-search-result').first().click();
+            cy.wait('@getFlightDetails');
+        });
+
+        it('Should display departure gate', () => {
+            cy.getByTestId('flight-departure-gate').should('contain', '5');
+        });
+
+        it('Should display departure terminal', () => {
+            cy.getByTestId('flight-departure-terminal').should('contain', 'A');
+        });
+
+        it('Should display check-in time range', () => {
+            cy.getByTestId('flight-check-in-time').should('contain', '07:00');
+        });
+
+        it('Should display boarding time', () => {
+            cy.getByTestId('flight-boarding-time').should('contain', '08:30');
+        });
+
+        it('Should display arrival gate', () => {
+            cy.getByTestId('flight-arrival-gate').should('contain', '12');
+        });
+
+        it('Should display arrival terminal', () => {
+            cy.getByTestId('flight-arrival-terminal').should('contain', 'B');
+        });
+    });
+
+    describe('Flight Details Page - Navigation', () => {
+        beforeEach(() => {
+            cy.getByTestId('schedule-departure-city-input').type('Москва').type('{enter}');
+            cy.wait(200);
+            cy.getByTestId('schedule-arrival-city-input').type('Санкт-Петербург').type('{enter}');
+            cy.getByTestId('schedule-search-button').click();
+            cy.wait('@getSchedule');
+            cy.getByTestId('schedule-search-result').first().click();
+            cy.wait('@getFlightDetails');
+        });
+
+        it('Should navigate to next flight', () => {
+            cy.getByTestId('next-flight-button').click();
+            cy.wait('@getFlightDetails');
+            cy.getByTestId('flight-details-number').should('be.visible');
+        });
+
+        it('Should navigate to previous flight', () => {
+            cy.getByTestId('next-flight-button').click();
+            cy.wait('@getFlightDetails');
+            cy.getByTestId('prev-flight-button').click();
+            cy.wait('@getFlightDetails');
+            cy.getByTestId('flight-details-number').should('be.visible');
+        });
+
+        it('Should return to search results', () => {
+            cy.getByTestId('back-to-search-button').click();
+            cy.url().should('include', 'schedule');
+            cy.getByTestId('schedule-search-results').should('be.visible');
+        });
+
+        it('Should remember search filters when returning', () => {
+            cy.getByTestId('back-to-search-button').click();
+            cy.getByTestId('schedule-departure-city-input').getByTestId('city-code').should('contain', 'MOW');
+            cy.getByTestId('schedule-arrival-city-input').getByTestId('city-code').should('contain', 'LED');
+        });
+
+        it('Should disable previous button on first flight', () => {
+            cy.getByTestId('prev-flight-button').should('be.disabled');
+        });
+    });
+
+    // ============================================================
+    // FILTERS & SORTING TESTS (~15 tests)
+    // ============================================================
+
+    describe('Search Results - Filters', () => {
+        beforeEach(() => {
+            cy.getByTestId('schedule-departure-city-input').type('Москва').type('{enter}');
+            cy.wait(200);
+            cy.getByTestId('schedule-arrival-city-input').type('Санкт-Петербург').type('{enter}');
+            cy.getByTestId('schedule-search-button').click();
+            cy.wait('@getSchedule');
+        });
+
+        it('Should toggle time range filter', () => {
+            cy.getByTestId('time-filter-toggle').click();
+            cy.getByTestId('time-filter-panel').should('be.visible');
+        });
+
+        it('Should set minimum departure time', () => {
+            cy.getByTestId('time-filter-toggle').click();
+            cy.getByTestId('time-filter-min-slider').invoke('val', '09').trigger('input');
+            cy.getByTestId('schedule-search-result').each(($flight) => {
+                cy.wrap($flight).getByTestId('flight-departure-time').should('be.visible');
+            });
+        });
+
+        it('Should set maximum departure time', () => {
+            cy.getByTestId('time-filter-toggle').click();
+            cy.getByTestId('time-filter-max-slider').invoke('val', '18').trigger('input');
+            cy.getByTestId('schedule-search-result').each(($flight) => {
+                cy.wrap($flight).getByTestId('flight-departure-time').should('be.visible');
+            });
+        });
+
+        it('Should toggle airline filter', () => {
+            cy.getByTestId('airline-filter-toggle').click();
+            cy.getByTestId('airline-filter-panel').should('be.visible');
+        });
+
+        it('Should select single airline', () => {
+            cy.getByTestId('airline-filter-toggle').click();
+            cy.getByTestId('airline-filter-option').first().click();
+            cy.getByTestId('schedule-search-result').should('have.length.at.least', 1);
+        });
+
+        it('Should deselect airline', () => {
+            cy.getByTestId('airline-filter-toggle').click();
+            cy.getByTestId('airline-filter-option').first().click();
+            cy.getByTestId('airline-filter-option').first().click();
+            cy.getByTestId('schedule-search-result').should('have.length.at.least', 1);
+        });
+
+        it('Should toggle price range filter', () => {
+            cy.getByTestId('price-filter-toggle').click();
+            cy.getByTestId('price-filter-panel').should('be.visible');
+        });
+
+        it('Should set minimum price', () => {
+            cy.getByTestId('price-filter-toggle').click();
+            cy.getByTestId('price-filter-min-input').clear().type('3000');
+            cy.getByTestId('schedule-search-result').should('have.length.at.least', 1);
+        });
+
+        it('Should set maximum price', () => {
+            cy.getByTestId('price-filter-toggle').click();
+            cy.getByTestId('price-filter-max-input').clear().type('4000');
+            cy.getByTestId('schedule-search-result').should('have.length.at.least', 1);
+        });
+
+        it('Should clear all filters', () => {
+            cy.getByTestId('clear-filters-button').click();
+            cy.getByTestId('schedule-search-result').should('have.length.at.least', 1);
+        });
+    });
+
+    describe('Search Results - Sorting', () => {
+        beforeEach(() => {
+            cy.getByTestId('schedule-departure-city-input').type('Москва').type('{enter}');
+            cy.wait(200);
+            cy.getByTestId('schedule-arrival-city-input').type('Санкт-Петербург').type('{enter}');
+            cy.getByTestId('schedule-search-button').click();
+            cy.wait('@getSchedule');
+        });
+
+        it('Should sort by departure time ascending', () => {
+            cy.getByTestId('sort-dropdown').click();
+            cy.getByTestId('sort-option-departure-asc').click();
+            cy.getByTestId('schedule-search-result').first().getByTestId('flight-departure-time').should('contain', '09:00');
+        });
+
+        it('Should sort by departure time descending', () => {
+            cy.getByTestId('sort-dropdown').click();
+            cy.getByTestId('sort-option-departure-desc').click();
+            cy.getByTestId('schedule-search-result').first().getByTestId('flight-departure-time').should('contain', '21:00');
+        });
+
+        it('Should sort by flight duration', () => {
+            cy.getByTestId('sort-dropdown').click();
+            cy.getByTestId('sort-option-duration').click();
+            cy.getByTestId('schedule-search-result').should('have.length.at.least', 1);
+        });
+
+        it('Should sort by price ascending', () => {
+            cy.getByTestId('sort-dropdown').click();
+            cy.getByTestId('sort-option-price-asc').click();
+            cy.getByTestId('schedule-search-result').first().getByTestId('flight-price').should('contain', '2800');
+        });
+
+        it('Should sort by price descending', () => {
+            cy.getByTestId('sort-dropdown').click();
+            cy.getByTestId('sort-option-price-desc').click();
+            cy.getByTestId('schedule-search-result').first().getByTestId('flight-price').should('contain', '4200');
+        });
+    });
+
+    describe('Search Results - Result Display', () => {
+        beforeEach(() => {
+            cy.getByTestId('schedule-departure-city-input').type('Москва').type('{enter}');
+            cy.wait(200);
+            cy.getByTestId('schedule-arrival-city-input').type('Санкт-Петербург').type('{enter}');
+            cy.getByTestId('schedule-search-button').click();
+            cy.wait('@getSchedule');
+        });
+
+        it('Should display multiple flight results', () => {
+            cy.getByTestId('schedule-search-result').should('have.length', 5);
+        });
+
+        it('Should highlight flight on hover', () => {
+            cy.getByTestId('schedule-search-result').first().trigger('mouseover');
+            cy.getByTestId('schedule-search-result').first().should('have.class', 'highlighted');
+        });
+
+        it('Should show flight details on click', () => {
+            cy.getByTestId('schedule-search-result').first().click();
+            cy.wait('@getFlightDetails');
+            cy.getByTestId('flight-details-number').should('be.visible');
+        });
+    });
+});