Of 254 sampled UO departures, 57.1% left 15 minutes or more behind schedule. Average lateness was 19.0 minutes. Sample window: Nov 3, 2025 to Sep 26, 2026. Its published schedule has about 78 flights a week on 6 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 | 86 | 64.0% | 20.5 min |
| May 2026 | 161 | 52.8% | 18.1 min |
| Departure airport | Departures sampled | Late | Average lateness |
|---|---|---|---|
| Hong Kong International (HKG) | 128 | 51.6% | 16.8 min |
| Seoul (Incheon) (ICN) | 50 | 46.0% | 16.0 min |
| Narita International Airport (NRT) | 36 | 77.8% | 24.3 min |
GET /flight_delays filtered by airline_iata=UO 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=UO
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.