Of 14,890 sampled departures, 63.8% left 15 minutes or more behind schedule. Average lateness was 32.1 minutes. Sample window: Oct 19, 2025 to May 8, 2026.
These are historical aggregates, not live status. A departure is late at 15 minutes past schedule.
| Airline | Flights sampled | Late | Average lateness |
|---|---|---|---|
| All Nippon Airways (NH) | 31 | 100.0% | 56.7 min |
| Qatar Airways (QR) | 22 | 100.0% | 95.4 min |
| Zipair Tokyo (ZG) | 44 | 97.7% | 47.2 min |
| Korean Air (KE) | 37 | 97.3% | 34.5 min |
| Air New Zealand (NZ) | 28 | 96.4% | 27.0 min |
63.8% of this SFO 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=SFOField 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": "SFO",
"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 SFO departures that are late right now, in the JSON above.
After the trial, Starter is $24.99/mo.