Of 53,701 sampled KL departures, 74.1% left 15 minutes or more behind schedule. Average lateness was 27.5 minutes. Sample window: Oct 16, 2025 to Oct 16, 2026. Its published schedule has about 1,134 flights a week on 94 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 | 3,029 | 73.4% | 28.2 min |
| Dec 2025 | 3,239 | 75.0% | 28.1 min |
| Jan 2026 | 2,304 | 77.8% | 45.2 min |
| Feb 2026 | 2,550 | 62.2% | 21.6 min |
| Mar 2026 | 4,066 | 66.8% | 22.9 min |
| Apr 2026 | 4,305 | 71.1% | 23.1 min |
| May 2026 | 3,516 | 70.3% | 23.6 min |
| Jun 2026 | 4,629 | 74.4% | 28.1 min |
| Jul 2026 | 7,092 | 76.3% | 26.3 min |
| Aug 2026 | 7,649 | 77.3% | 29.0 min |
| Sep 2026 | 6,919 | 78.0% | 28.9 min |
| Oct 2026 | 3,282 | 76.4% | 29.2 min |
| Departure airport | Departures sampled | Late | Average lateness |
|---|---|---|---|
| Schiphol (AMS) | 39,318 | 78.8% | 28.5 min |
| Düsseldorf International Airport (DUS) | 852 | 61.7% | 26.2 min |
| Arlanda (ARN) | 717 | 58.9% | 24.5 min |
| Kastrup (CPH) | 711 | 59.2% | 24.0 min |
| Gardermoen (OSL) | 710 | 60.3% | 24.0 min |
| Landvetter (GOT) | 604 | 41.7% | 18.9 min |
| Dyce (ABZ) | 598 | 46.0% | 20.6 min |
| Manchester Airport (MAN) | 592 | 86.7% | 34.9 min |
| Billund (BLL) | 549 | 37.3% | 15.7 min |
| Edinburgh (EDI) | 525 | 72.6% | 29.7 min |
3 active registered aircraft.
| Aircraft type | Aircraft |
|---|---|
| Boeing 737 NG | 3 |
GET /flight_delays filtered by airline_iata=KL 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=KL
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.