Of 14,089 sampled 1I departures, 76.0% left 15 minutes or more behind schedule. Average lateness was 42.5 minutes. Sample window: Oct 17, 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 | 462 | 79.0% | 47.1 min |
| Dec 2025 | 547 | 80.3% | 54.2 min |
| Jan 2026 | 2,118 | 77.0% | 40.7 min |
| Feb 2026 | 40 | 62.5% | 42.3 min |
| Mar 2026 | 6,629 | 78.5% | 42.8 min |
| Apr 2026 | 32 | 62.5% | 22.7 min |
| May 2026 | 1,590 | 78.2% | 38.7 min |
| Jun 2026 | 268 | 80.2% | 45.0 min |
| Jul 2026 | 618 | 83.8% | 51.2 min |
| Aug 2026 | 542 | 74.7% | 43.5 min |
| Sep 2026 | 796 | 52.0% | 34.3 min |
| Oct 2026 | 407 | 52.1% | 46.1 min |
| Departure airport | Departures sampled | Late | Average lateness |
|---|---|---|---|
| Washington Dulles International (IAD) | 2,885 | 75.7% | 49.3 min |
| Los Angeles International (LAX) | 814 | 69.3% | 40.4 min |
| Palm Beach International Airport (PBI) | 391 | 85.9% | 57.1 min |
| Las Vegas (LAS) | 387 | 81.9% | 47.6 min |
| John F Kennedy International (JFK) | 342 | 72.5% | 48.3 min |
| Love Field (DAL) | 326 | 82.2% | 48.4 min |
| San Francisco International (SFO) | 310 | 4.5% | 1.0 min |
| White Plains (HPN) | 302 | 79.5% | 51.4 min |
| New York (LGA) | 301 | 69.8% | 38.8 min |
| Miami International Airport (MIA) | 286 | 83.9% | 52.1 min |
GET /flight_delays filtered by airline_iata=1I 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=1I
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.