Of 2,741 sampled departures, 53.2% left 15 minutes or more behind schedule. Average lateness was 34.7 minutes. Sample window: Nov 10, 2025 to May 7, 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) | 53 | 77.4% | 37.6 min |
| Air Canada (AC) | 36 | 69.4% | 33.5 min |
| American Airlines (AA) | 455 | 61.8% | 44.8 min |
| Envoy Air Inc. (MQ) | 88 | 59.1% | 39.0 min |
| Southwest Airlines Co. (WN) | 306 | 58.8% | 29.4 min |
53.2% of this CLE 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 CLE departures that are late right now, in the JSON above.
After the trial, Starter is $24.99/mo.
