Of 6,659 sampled OS departures, 61.5% left 15 minutes or more behind schedule. Average lateness was 23.5 minutes. Sample window: Nov 2, 2025 to Nov 1, 2026. Its published schedule has about 9 flights a week on 1 routes.
These are historical aggregates, not live status. A departure is late at 15 minutes past schedule.
| Month | Departures sampled | Late | Average lateness |
|---|---|---|---|
| Dec 2025 | 397 | 69.0% | 26.7 min |
| Jan 2026 | 196 | 67.9% | 34.8 min |
| Feb 2026 | 222 | 53.2% | 23.2 min |
| Mar 2026 | 417 | 42.7% | 14.3 min |
| Apr 2026 | 363 | 53.4% | 20.0 min |
| May 2026 | 869 | 49.8% | 17.4 min |
| Jun 2026 | 498 | 64.3% | 27.3 min |
| Jul 2026 | 766 | 70.4% | 26.7 min |
| Aug 2026 | 916 | 65.0% | 25.2 min |
| Sep 2026 | 797 | 65.1% | 23.5 min |
| Oct 2026 | 821 | 66.3% | 24.3 min |
| Departure airport | Departures sampled | Late | Average lateness |
|---|---|---|---|
| Frankfurt Main Airport (FRA) | 919 | 83.0% | 30.2 min |
| Düsseldorf Airport (DUS) | 600 | 46.0% | 18.2 min |
| Copenhagen Kastrup Airport (CPH) | 576 | 50.4% | 17.2 min |
| Charles de Gaulle International Airport (CDG) | 562 | 72.8% | 27.7 min |
| Amsterdam Airport Schiphol (AMS) | 548 | 68.8% | 25.4 min |
| Vienna International Airport (VIE) | 523 | 43.0% | 15.3 min |
| Hamburg Helmut Schmidt Airport (HAM) | 516 | 46.5% | 18.1 min |
| Stockholm-Arlanda Airport (ARN) | 406 | 45.3% | 18.5 min |
| Brussels Airport (BRU) | 403 | 69.0% | 23.9 min |
| London Heathrow Airport (LHR) | 221 | 92.8% | 34.5 min |
GET /flight_delays filtered by airline_iata=OS returns the flights delayed at this moment: flight number, scheduled and actual times and minutes of delay.
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