Of 8,535 sampled departures, 58.8% left 15 minutes or more behind schedule. Average lateness was 34.7 minutes. Sample window: Dec 12, 2025 to Oct 17, 2026.
These are historical aggregates, not live status. A departure is late at 15 minutes past schedule.
| Airline | Flights sampled | Late | Average lateness |
|---|---|---|---|
| British Airways (BA) | 34 | 100.0% | 36.4 min |
| Southwest Airlines Co. (WN) | 262 | 81.7% | 43.5 min |
| ChallengAir (1I) | 182 | 73.6% | 37.6 min |
| Aer Lingus (EI) | 26 | 73.1% | 34.5 min |
| Alaska Airlines (AS) | 37 | 73.0% | 34.6 min |
58.8% of this PHL 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 PHL departures that are late right now, in the JSON above.
After the trial, Starter is $24.99/mo.
