Of 876 sampled departures, 38.6% left 15 minutes or more behind schedule. Average lateness was 16.5 minutes. Sample window: Jan 16, 2026 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) | 108 | 75.9% | 15.0 min |
| United Airlines (UA) | 198 | 53.5% | 34.4 min |
| American Airlines (AA) | 91 | 52.8% | 35.2 min |
| Delta Air Lines (DL) | 132 | 31.8% | 14.8 min |
| Alpine Air Express (5A) | 26 | 19.2% | 7.3 min |
38.6% of this JAC 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 JAC departures that are late right now, in the JSON above.
After the trial, Starter is $24.99/mo.
