Of 5,975 sampled departures, 59.0% left 15 minutes or more behind schedule. Average lateness was 32.0 minutes. Sample window: Jan 7, 2026 to May 7, 2026.
These are historical aggregates, not live status. A departure is late at 15 minutes past schedule.
| Airline | Flights sampled | Late | Average lateness |
|---|---|---|---|
| ChallengAir (1I) | 141 | 78.7% | 36.8 min |
| British Airways (BA) | 26 | 73.1% | 35.2 min |
| Air Transport International Inc. (8C) | 116 | 67.2% | 26.8 min |
| Icelandair (FI) | 33 | 66.7% | 30.8 min |
| Southwest Airlines Co. (WN) | 3,976 | 65.7% | 34.5 min |
59.0% of this BWI sample left 15 minutes late or more.
GET /flight_delays returns the ones that are late at this moment: airline, flight number, scheduled time, actual time and minutes of delay.
https://www.goflightlabs.com/flight_delays?access_key=YOUR_ACCESS_KEY&delay=15&type=departures&dep_iata=BWIField names match the live API. This flight only shows the shape. It is not a live result.
{
"success": true,
"data": [
{
"airline_iata": "AA",
"flight_iata": "AA100",
"flight_number": "100",
"dep_iata": "BWI",
"dep_time": "2024-03-15 08:00",
"dep_actual": "2024-03-15 08:22",
"dep_delayed": 22,
"status": "active"
}
]
}
That URL still says YOUR_ACCESS_KEY.
A 7-day trial replaces it with a real key and returns the BWI departures that are late right now, in the JSON above.
After the trial, Starter is $24.99/mo.