Of 24,043 sampled AS departures, 59.5% left 15 minutes or more behind schedule. Average lateness was 29.9 minutes. Sample window: Nov 4, 2025 to Oct 31, 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 | 715 | 65.9% | 30.9 min |
| Dec 2025 | 683 | 81.3% | 40.5 min |
| Jan 2026 | 3,563 | 52.7% | 23.5 min |
| Feb 2026 | 26 | 57.7% | 30.6 min |
| Mar 2026 | 10,575 | 57.0% | 29.6 min |
| May 2026 | 2,828 | 54.0% | 25.3 min |
| Jun 2026 | 533 | 65.9% | 33.6 min |
| Jul 2026 | 1,537 | 72.2% | 39.8 min |
| Aug 2026 | 1,297 | 68.5% | 35.9 min |
| Sep 2026 | 1,190 | 65.6% | 32.4 min |
| Oct 2026 | 1,084 | 64.1% | 33.3 min |
| Departure airport | Departures sampled | Late | Average lateness |
|---|---|---|---|
| Seattle–Tacoma International Airport (SEA) | 5,525 | 62.7% | 30.6 min |
| Los Angeles International Airport (LAX) | 5,480 | 59.1% | 28.6 min |
| John F. Kennedy International Airport (JFK) | 1,607 | 88.6% | 49.6 min |
| Portland International Airport (PDX) | 1,385 | 47.2% | 21.8 min |
| San Francisco International Airport (SFO) | 1,370 | 60.0% | 31.7 min |
| San Diego International Airport (SAN) | 1,167 | 75.2% | 32.8 min |
| Boise Air Terminal/Gowen Field (BOI) | 507 | 35.5% | 20.4 min |
| Harry Reid International Airport (LAS) | 496 | 63.3% | 33.7 min |
| Washington Dulles International Airport (IAD) | 435 | 76.6% | 36.4 min |
| John Wayne Orange County International Airport (SNA) | 433 | 37.4% | 21.5 min |
5 active registered aircraft.
| Aircraft type | Aircraft |
|---|---|
| Boeing 737 NG | 4 |
| Boeing 737 Classic | 1 |
GET /flight_delays filtered by airline_iata=AS returns the flights delayed at this moment: flight number, scheduled and actual times and minutes of delay.
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