Of 293 sampled KC departures, 89.4% left 15 minutes or more behind schedule. Average lateness was 33.6 minutes. Sample window: Nov 4, 2025 to Oct 14, 2026. Its published schedule has about 367 flights a week on 9 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 | 30 | 90.0% | 29.1 min |
| Dec 2025 | 20 | 100.0% | 42.1 min |
| Jul 2026 | 51 | 92.2% | 35.8 min |
| Aug 2026 | 62 | 93.6% | 36.7 min |
| Sep 2026 | 61 | 82.0% | 25.9 min |
| Oct 2026 | 20 | 90.0% | 24.2 min |
| Departure airport | Departures sampled | Late | Average lateness |
|---|---|---|---|
| Frankfurt International Airport (FRA) | 217 | 89.4% | 30.7 min |
| Heathrow (LHR) | 36 | 94.4% | 41.0 min |
GET /flight_delays filtered by airline_iata=KC 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=KC
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.