Of 53 sampled NS departures, 37.7% left 15 minutes or more behind schedule. Average lateness was 17.2 minutes. Sample window: Nov 4, 2025 to May 8, 2026. Its published schedule has about 1 flights a week on 1 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 | 52 | 36.5% | 17.0 min |
| Departure airport | Departures sampled | Late | Average lateness |
|---|---|---|---|
| Beijing Daxing International Airport (PKX) | 42 | 35.7% | 13.1 min |
GET /flight_delays filtered by airline_iata=NS 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=NS
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.