Of 7,223 sampled OO departures, 55.1% left 15 minutes or more behind schedule. Average lateness was 26.3 minutes. Sample window: Oct 19, 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 | 116 | 56.9% | 28.9 min |
| Dec 2025 | 143 | 66.4% | 39.8 min |
| Jan 2026 | 1,385 | 51.1% | 24.6 min |
| Mar 2026 | 4,050 | 55.9% | 27.0 min |
| May 2026 | 1,145 | 53.1% | 23.5 min |
| Jun 2026 | 23 | 69.6% | 21.1 min |
| Jul 2026 | 106 | 56.6% | 24.6 min |
| Aug 2026 | 82 | 64.6% | 27.6 min |
| Sep 2026 | 84 | 71.4% | 40.6 min |
| Oct 2026 | 58 | 74.1% | 27.7 min |
| Departure airport | Departures sampled | Late | Average lateness |
|---|---|---|---|
| Phoenix (PHX) | 1,423 | 54.0% | 23.0 min |
| Dallas/Fort Worth International (DFW) | 1,151 | 67.6% | 26.6 min |
| Los Angeles International (LAX) | 948 | 37.9% | 18.5 min |
| Chicago O'hare International (ORD) | 764 | 81.0% | 48.3 min |
| Denver International (DEN) | 571 | 58.5% | 26.2 min |
| George Bush Intercontinental (IAH) | 210 | 62.9% | 30.6 min |
| San Francisco International (SFO) | 159 | 16.4% | 6.8 min |
| Charlotte Douglas (CLT) | 104 | 88.5% | 38.3 min |
| Washington Dulles International (IAD) | 102 | 69.6% | 32.8 min |
| Will Rogers World Airport (OKC) | 94 | 37.2% | 18.6 min |
GET /flight_delays filtered by airline_iata=OO 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=OO
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.