Of 849 sampled departures, 47.5% left 15 minutes or more behind schedule. Average lateness was 35.8 minutes. Sample window: Jan 16, 2026 to Mar 27, 2026.
These are historical aggregates, not live status. A departure is late at 15 minutes past schedule.
| Airline | Flights sampled | Late | Average lateness |
|---|---|---|---|
| ChallengAir (1I) | 27 | 77.8% | 30.4 min |
| MN Airlines LLC (SY) | 23 | 69.6% | 50.0 min |
| United Airlines (UA) | 142 | 69.0% | 50.0 min |
| American Airlines (AA) | 161 | 64.6% | 59.2 min |
| Frontier Airlines, Inc. (F9) | 20 | 55.0% | 67.7 min |
47.5% of this MSN sample left 15 minutes late or more.
GET /flight_delays returns the ones that are late at this moment: airline, flight number, scheduled time, actual time and minutes of delay.
Field names match the live API. This flight only shows the shape. It is not a live result.
That URL still says YOUR_ACCESS_KEY.
A 7-day trial replaces it with a real key and returns the MSN departures that are late right now, in the JSON above.
After the trial, Starter is $24.99/mo.
