Of 903 sampled departures, 32.6% left 15 minutes or more behind schedule. Average lateness was 13.4 minutes. Sample window: Nov 6, 2025 to May 6, 2026.
These are historical aggregates, not live status. A departure is late at 15 minutes past schedule.
| Airline | Flights sampled | Late | Average lateness |
|---|---|---|---|
| Delta Air Lines (DL) | 35 | 51.4% | 22.5 min |
| ALS (K4) | 38 | 44.7% | 12.9 min |
| UPS Airlines (5X) | 49 | 42.9% | 11.8 min |
| Alaska Airlines (AS) | 203 | 42.4% | 21.4 min |
| Four Island Air (FX) | 55 | 38.2% | 12.1 min |
32.6% of this ANC 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 ANC departures that are late right now, in the JSON above.
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