diff --git a/src/features/flights-map/components/FlightsMapStartPage.test.tsx b/src/features/flights-map/components/FlightsMapStartPage.test.tsx
index b395d2d7..15ffcb3e 100644
--- a/src/features/flights-map/components/FlightsMapStartPage.test.tsx
+++ b/src/features/flights-map/components/FlightsMapStartPage.test.tsx
@@ -39,8 +39,20 @@ vi.mock("@/env/index.js", () => ({
   getEnv: () => ({ API_BASE_URL: "https://api.test" }),
 }));
 
+const searchState: {
+  routes: Array<{ route: string[]; isDirect: boolean }>;
+  loading: boolean;
+  error: Error | null;
+} = {
+  routes: [],
+  loading: false,
+  error: null,
+};
 vi.mock("../hooks/useFlightsMapSearch.js", () => ({
-  useFlightsMapSearch: () => ({ routes: [], loading: false, error: null }),
+  useFlightsMapSearch: () => ({
+    ...searchState,
+    refresh: vi.fn(),
+  }),
 }));
 
 vi.mock("../hooks/useFlightsMapCalendar.js", () => ({
@@ -161,3 +173,59 @@ describe("FlightsMapStartPage — markers from dictionaries", () => {
     expect(lastMapCanvasProps!["international"]).toBe(false);
   });
 });
+
+describe("FlightsMapStartPage — polylines from search results (C.3)", () => {
+  beforeEach(() => {
+    lastMapCanvasProps = null;
+    dictState.dictionaries = {
+      cities: [
+        { code: "A", name: "A", country_code: "RU", location: { lat: 55, lon: 37 } },
+        { code: "B", name: "B", country_code: "RU", location: { lat: 60, lon: 40 } },
+        { code: "X", name: "X", country_code: "RU", location: { lat: 58, lon: 38 } },
+      ],
+    };
+    dictState.loading = false;
+    dictState.error = null;
+    searchState.routes = [];
+    searchState.loading = false;
+    searchState.error = null;
+  });
+
+  it("passes an empty polylines array when no routes", () => {
+    render(<FlightsMapStartPage />);
+    const polylines = lastMapCanvasProps!["polylines"] as unknown[];
+    expect(polylines).toEqual([]);
+  });
+
+  it("passes an empty intermediateIds when no routes", () => {
+    render(<FlightsMapStartPage />);
+    const ids = lastMapCanvasProps!["intermediateIds"] as string[];
+    expect(ids).toEqual([]);
+  });
+
+  it("flows intermediateIds from a multi-hop route", () => {
+    searchState.routes = [{ route: ["A", "X", "B"], isDirect: false }];
+
+    render(<FlightsMapStartPage />);
+
+    const ids = lastMapCanvasProps!["intermediateIds"] as string[];
+    expect(ids).toEqual(["X"]);
+  });
+
+  it("flows route-mode polylines with correct style flags when search returned routes", () => {
+    searchState.routes = [
+      { route: ["A", "B"], isDirect: true },
+      { route: ["A", "X", "B"], isDirect: false },
+    ];
+
+    render(<FlightsMapStartPage />);
+
+    const polylines = lastMapCanvasProps!["polylines"] as Array<{
+      style: string;
+      cityIds: string[];
+    }>;
+    expect(polylines).toHaveLength(2);
+    expect(polylines[0]!.style).toBe("direct");
+    expect(polylines[1]!.style).toBe("connecting");
+  });
+});