Of 148,756 sampled DL departures, 63.5% left 15 minutes or more behind schedule. Average lateness was 36.9 minutes. Sample window: Oct 16, 2025 to Oct 16, 2026. Its published schedule has about 213 flights a week on 12 routes.
These are historical aggregates, not live status. A departure is late at 15 minutes past schedule.
| Month | Departures sampled | Late | Average lateness |
|---|---|---|---|
| Nov 2025 | 4,804 | 70.3% | 36.3 min |
| Dec 2025 | 8,000 | 78.6% | 46.4 min |
| Jan 2026 | 19,542 | 56.7% | 32.2 min |
| Feb 2026 | 3,069 | 61.7% | 30.1 min |
| Mar 2026 | 54,787 | 58.5% | 36.2 min |
| Apr 2026 | 3,579 | 71.8% | 34.7 min |
| May 2026 | 17,731 | 53.9% | 27.0 min |
| Jun 2026 | 5,542 | 74.1% | 40.5 min |
| Jul 2026 | 8,988 | 76.4% | 48.7 min |
| Aug 2026 | 7,946 | 72.6% | 46.8 min |
| Sep 2026 | 8,762 | 72.9% | 40.7 min |
| Oct 2026 | 5,095 | 74.9% | 40.4 min |
| Departure airport | Departures sampled | Late | Average lateness |
|---|---|---|---|
| John F Kennedy International (JFK) | 27,391 | 84.2% | 48.3 min |
| New York (LGA) | 23,051 | 72.1% | 38.2 min |
| Hartsfield-jackson Atlanta International (ATL) | 19,130 | 51.4% | 28.4 min |
| Los Angeles International (LAX) | 14,164 | 47.9% | 27.0 min |
| Detroit Metropolitan Wayne County (DTW) | 6,808 | 64.3% | 42.4 min |
| Minneapolis - St. Paul International (MSP) | 5,786 | 62.1% | 39.0 min |
| Salt Lake City International (SLC) | 4,888 | 44.7% | 23.3 min |
| Logan International (BOS) | 3,240 | 66.9% | 37.0 min |
| Seattle-Tacoma International (SEA) | 3,122 | 70.1% | 32.6 min |
| Schiphol (AMS) | 2,029 | 88.2% | 45.6 min |
18 active registered aircraft.
| Aircraft type | Aircraft |
|---|---|
| McDonnell Douglas DC | 12 |
| Boeing 757 | 3 |
| Airbus A330/A340 | 1 |
| Boeing 717 | 1 |
| Boeing 767 | 1 |
GET /flight_delays filtered by airline_iata=DL 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=DL
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.