Of 84 sampled QZ departures, 71.4% left 15 minutes or more behind schedule. Average lateness was 46.5 minutes. Sample window: Nov 5, 2025 to May 7, 2026. Its published schedule has about 885 flights a week on 52 routes.
These are historical aggregates, not live status. A departure is late at 15 minutes past schedule.
| Month | Departures sampled | Late | Average lateness |
|---|---|---|---|
| Apr 2026 | 29 | 48.3% | 51.6 min |
| May 2026 | 47 | 85.1% | 46.0 min |
| Departure airport | Departures sampled | Late | Average lateness |
|---|---|---|---|
| Singapore Changi (SIN) | 38 | 55.3% | 46.0 min |
| Kuala Lumpur International Airport (klia) (KUL) | 28 | 82.1% | 34.1 min |
GET /flight_delays filtered by airline_iata=QZ 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=QZ
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.