diff --git a/src/features/online-board/components/BoardDetailsHeader/FlightStatusButton.test.tsx b/src/features/online-board/components/BoardDetailsHeader/FlightStatusButton.test.tsx
new file mode 100644
index 00000000..36966463
--- /dev/null
+++ b/src/features/online-board/components/BoardDetailsHeader/FlightStatusButton.test.tsx
@@ -0,0 +1,65 @@
+// @vitest-environment jsdom
+import { describe, it, expect, vi, beforeEach } from "vitest";
+import { render, screen, fireEvent } from "@testing-library/react";
+import { FlightStatusButton } from "./FlightStatusButton.js";
+import type { ISimpleFlight } from "../../types.js";
+
+vi.mock("@/i18n/provider.js", () => ({
+  useTranslation: () => ({ t: (k: string) => k }),
+}));
+
+function makeFlight(carrier = "SU"): ISimpleFlight {
+  return {
+    id: "X",
+    routeType: "Direct",
+    flyingTime: "1h",
+    status: "Scheduled",
+    flightId: { carrier, flightNumber: "0022", suffix: "", date: "20260417" },
+    operatingBy: { carrier, flightNumber: "0022" },
+    leg: {} as never,
+  } as ISimpleFlight;
+}
+
+describe("FlightStatusButton", () => {
+  beforeEach(() => {
+    Object.defineProperty(window, "open", { value: vi.fn(), writable: true });
+  });
+
+  it("renders label SHARED.DETAILS", () => {
+    render(<FlightStatusButton flight={makeFlight()} locale="ru" />);
+    expect(screen.getByText("SHARED.DETAILS")).toBeTruthy();
+  });
+
+  it("has data-testid flight-status-button", () => {
+    render(<FlightStatusButton flight={makeFlight()} locale="ru" />);
+    expect(screen.getByTestId("flight-status-button")).toBeTruthy();
+  });
+
+  it("SU click opens native onlineboard details URL", () => {
+    render(<FlightStatusButton flight={makeFlight("SU")} locale="ru" />);
+    fireEvent.click(screen.getByTestId("flight-status-button"));
+    const openMock = window.open as ReturnType<typeof vi.fn>;
+    expect(openMock).toHaveBeenCalledTimes(1);
+    expect(openMock.mock.calls[0]![0]).toBe("/ru/onlineboard/SU0022-20260417");
+  });
+
+  it("HZ click opens flyaurora URL", () => {
+    render(<FlightStatusButton flight={makeFlight("HZ")} locale="ru" />);
+    fireEvent.click(screen.getByTestId("flight-status-button"));
+    const openMock = window.open as ReturnType<typeof vi.fn>;
+    expect(openMock).toHaveBeenCalledTimes(1);
+    expect(openMock.mock.calls[0]![0]).toContain("flyaurora.ru");
+  });
+
+  it("small prop adds --small modifier class", () => {
+    render(<FlightStatusButton flight={makeFlight()} locale="ru" small />);
+    const btn = screen.getByTestId("flight-status-button");
+    expect(btn.className).toContain("flight-action-btn--small");
+  });
+
+  it("default (small=false) does not add --small class", () => {
+    render(<FlightStatusButton flight={makeFlight()} locale="ru" />);
+    const btn = screen.getByTestId("flight-status-button");
+    expect(btn.className).not.toContain("flight-action-btn--small");
+  });
+});
diff --git a/src/features/online-board/components/BoardDetailsHeader/FlightStatusButton.tsx b/src/features/online-board/components/BoardDetailsHeader/FlightStatusButton.tsx
new file mode 100644
index 00000000..52e78c30
--- /dev/null
+++ b/src/features/online-board/components/BoardDetailsHeader/FlightStatusButton.tsx
@@ -0,0 +1,56 @@
+import type { FC } from "react";
+import { useTranslation } from "@/i18n/provider.js";
+import type { ISimpleFlight } from "../../types.js";
+import { AIRLINES } from "./airlines.js";
+import { buildOnlineBoardUrl } from "../../url.js";
+import "./actions.scss";
+
+export interface FlightStatusButtonProps {
+  flight: ISimpleFlight;
+  locale: string;
+  small?: boolean;
+}
+
+export const FlightStatusButton: FC<FlightStatusButtonProps> = ({ flight, locale, small }) => {
+  const { t } = useTranslation();
+
+  const handleClick = () => {
+    const carrier = flight.operatingBy.carrier;
+    if (!carrier) return;
+    const config = AIRLINES[carrier];
+    if (!config) return;
+
+    if (config.hasNativeStatus) {
+      const path = buildOnlineBoardUrl({
+        type: "details",
+        carrier: flight.flightId.carrier,
+        flightNumber: flight.flightId.flightNumber,
+        ...(flight.flightId.suffix ? { suffix: flight.flightId.suffix } : {}),
+        date: flight.flightId.date,
+      });
+      window.open(`/${locale}/${path}`, "_blank", "noopener,noreferrer");
+    } else if (config.statusUrl) {
+      window.open(config.statusUrl, "_blank", "noopener,noreferrer");
+    }
+  };
+
+  const classes = [
+    "flight-action-btn",
+    "flight-action-btn--blue-light",
+    small ? "flight-action-btn--small" : "",
+  ]
+    .filter(Boolean)
+    .join(" ");
+
+  return (
+    <button
+      type="button"
+      className={classes}
+      data-testid="flight-status-button"
+      title={t("SHARED.DETAILS-TOOLTIP")}
+      onClick={handleClick}
+    >
+      {t("SHARED.DETAILS")}
+    </button>
+  );
+};