diff --git a/src/features/online-board/components/OnlineBoardDetailsPage.tsx b/src/features/online-board/components/OnlineBoardDetailsPage.tsx
index 889ab7ef..0e98b55f 100644
--- a/src/features/online-board/components/OnlineBoardDetailsPage.tsx
+++ b/src/features/online-board/components/OnlineBoardDetailsPage.tsx
@@ -152,7 +152,13 @@ export const OnlineBoardDetailsPage: FC<OnlineBoardDetailsPageProps> = ({
     flights: `${flightId.carrier}${flightId.flightNumber}${flightId.suffix ?? ""}`,
     dates: `${flightId.date.slice(0, 4)}-${flightId.date.slice(4, 6)}-${flightId.date.slice(6, 8)}`,
   };
-  const { flight, allFlights, loading, error } = useFlightDetails(detailsParams);
+  const { flight: firstFlight, allFlights, loading, error } = useFlightDetails(detailsParams);
+
+  // Pick the flight matching the URL's flightId (date-based match). The API
+  // response may contain multiple flights with the same flight number on
+  // different dates; we need the one the user actually navigated to.
+  const flight =
+    allFlights.find((f) => f.flightId.date === flightId.date) ?? firstFlight;
 
   // Live updates via SignalR
   const { flight: liveFlight, connectionStatus } = useLiveFlightDetails(