Of 1,455 sampled 9X departures, 26.2% left 15 minutes or more behind schedule. Average lateness was 10.2 minutes. Sample window: Oct 31, 2025 to Oct 15, 2026.
These are historical aggregates, not live status. A departure is late at 15 minutes past schedule.
| Month | Departures sampled | Late | Average lateness |
|---|---|---|---|
| Nov 2025 | 182 | 26.4% | 6.2 min |
| Dec 2025 | 170 | 28.8% | 11.0 min |
| Jan 2026 | 121 | 24.8% | 14.1 min |
| Mar 2026 | 360 | 33.6% | 18.8 min |
| May 2026 | 93 | 24.7% | -8.6 min |
| Jun 2026 | 60 | 23.3% | 1.8 min |
| Jul 2026 | 155 | 21.9% | 3.2 min |
| Aug 2026 | 127 | 15.0% | 0.0 min |
| Sep 2026 | 129 | 15.5% | 5.1 min |
| Oct 2026 | 55 | 40.0% | 49.9 min |
| Departure airport | Departures sampled | Late | Average lateness |
|---|---|---|---|
| Washington Dulles International (IAD) | 910 | 25.9% | 10.2 min |
| Los Angeles International (LAX) | 258 | 15.5% | 1.6 min |
| Pittsburgh International (PIT) | 97 | 35.1% | 21.6 min |
| Dallas/Fort Worth International (DFW) | 78 | 39.7% | 21.6 min |
| Phoenix (PHX) | 32 | 46.9% | 34.2 min |
| Memphis (MEM) | 28 | 50.0% | 36.7 min |
| Lambert-St. Louis International (STL) | 26 | 7.7% | -61.0 min |
| Nashville International (BNA) | 25 | 32.0% | 29.7 min |
GET /flight_delays filtered by airline_iata=9X returns the flights delayed at this moment: flight number, scheduled and actual times and minutes of delay.
https://www.goflightlabs.com/flight_delays?access_key=YOUR_ACCESS_KEY&delay=15&type=departures&airline_iata=9X
That URL still says YOUR_ACCESS_KEY.
A 7-day trial replaces it with a real key. After the trial, Starter is $24.99/mo.