Of 6,153 sampled W4 departures, 61.7% left 15 minutes or more behind schedule. Average lateness was 28.1 minutes. Sample window: Nov 2, 2025 to Oct 31, 2026.
These are historical aggregates, not live status. A departure is late at 15 minutes past schedule.
| Month | Departures sampled | Late | Average lateness |
|---|---|---|---|
| Nov 2025 | 332 | 45.5% | 19.3 min |
| Dec 2025 | 382 | 54.7% | 26.3 min |
| Jan 2026 | 332 | 59.0% | 33.2 min |
| Feb 2026 | 311 | 47.3% | 21.7 min |
| Mar 2026 | 436 | 43.6% | 20.0 min |
| Apr 2026 | 509 | 58.7% | 21.7 min |
| May 2026 | 769 | 66.7% | 26.1 min |
| Jun 2026 | 452 | 68.4% | 26.9 min |
| Jul 2026 | 647 | 75.9% | 34.2 min |
| Aug 2026 | 670 | 71.8% | 34.8 min |
| Sep 2026 | 634 | 64.0% | 27.6 min |
| Oct 2026 | 679 | 59.9% | 34.8 min |
| Departure airport | Departures sampled | Late | Average lateness |
|---|---|---|---|
| London Luton Airport (LTN) | 2,064 | 65.6% | 28.2 min |
| Brussels South Charleroi Airport (CRL) | 874 | 39.9% | 17.6 min |
| Eindhoven Airport (EIN) | 544 | 52.6% | 23.2 min |
| Hamburg Helmut Schmidt Airport (HAM) | 260 | 69.2% | 35.4 min |
| Birmingham Airport (BHX) | 242 | 63.2% | 29.8 min |
| Paris-Orly Airport (ORY) | 224 | 64.3% | 28.0 min |
| Billund Airport (BLL) | 220 | 35.5% | 16.7 min |
| Lyon Saint-Exupéry Airport (LYS) | 203 | 71.9% | 29.5 min |
| Copenhagen Kastrup Airport (CPH) | 176 | 75.0% | 43.9 min |
| Cologne Bonn Airport (CGN) | 140 | 72.9% | 40.1 min |
GET /flight_delays filtered by airline_iata=W4 returns the flights delayed at this moment: flight number, scheduled and actual times and minutes of delay.
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