Of 245 sampled UL departures, 93.5% left 15 minutes or more behind schedule. Average lateness was 50.6 minutes. Sample window: Oct 23, 2025 to Oct 15, 2026. Its published schedule has about 644 flights a week on 45 routes.
These are historical aggregates, not live status. A departure is late at 15 minutes past schedule.
| Month | Departures sampled | Late | Average lateness |
|---|---|---|---|
| May 2026 | 34 | 91.2% | 44.8 min |
| Jul 2026 | 30 | 93.3% | 49.3 min |
| Aug 2026 | 40 | 97.5% | 54.4 min |
| Sep 2026 | 50 | 98.0% | 57.6 min |
| Oct 2026 | 24 | 91.7% | 50.0 min |
| Departure airport | Departures sampled | Late | Average lateness |
|---|---|---|---|
| Heathrow (LHR) | 74 | 100.0% | 44.6 min |
| Frankfurt International Airport (FRA) | 58 | 96.6% | 70.6 min |
| Charles De Gaulle (CDG) | 57 | 93.0% | 51.2 min |
GET /flight_delays filtered by airline_iata=UL 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=UL
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.