CAA UK flight punctuality statistics
Covers Jan 2025 to Mar 2025 · Grain: airline, route, airport and month
Loaded 05 Aug 2026
Airline reliability report
United Airlines reliability report
CAA punctuality and operations figures for United Airlines, covering Jan 2025 to Mar 2025.
Mixed reliability
Labels compare airlines on the same rolling window; they never predict an individual flight.
How we work this out
Each airline's rolling 12-month on-time percentage (departures early to 15 minutes late, matched flights only) is ranked against all airlines reporting at UK airports over the same window. The top third is labelled Usually reliable, the middle third Mixed reliability, and the bottom third Higher disruption risk. Airlines with fewer than 1,000 matched flights in the window, or too few peers to compare, show Insufficient public data instead of a label. This comparison used 45 airlines.
Last 12 reported months
- On time (within 15 min)
- 79.9%
- Average delay
- 14 min
- Cancelled
- 2.4%
- Matched flights
- 3 164
Operations
- Passengers
- Not available yet
- Flights
- Not available yet
- How full flights typically are
- Not available yet
How delayed do flights get?
Share of flights over the same window, including cancellations, so the bands total roughly 100%.
- On time (early to 15 min) 78.0%
- 16 to 30 min late 6.9%
- 31 to 60 min late 4.8%
- 1 to 3 hours late 4.3%
- 3 to 6 hours late 1.0%
- Over 6 hours late 0.3%
- Cancelled 2.4%
Month by month
| Month | On time | Average delay | Cancelled | Matched flights |
|---|---|---|---|---|
| Jan 2025 | 77.1% | 17 min | 2.2% | 1 088 |
| Feb 2025 | 84.9% | 12 min | 0.4% | 997 |
| Mar 2025 | 78.3% | 12 min | 4.3% | 1 079 |
Busiest routes
| Route | Matched flights | On time |
|---|---|---|
| Heathrow to New York (Newark) | 1 217 | 82.6% |
| Heathrow to San Francisco | 357 | 83.4% |
| Heathrow to Washington (Dulles) | 351 | 78.4% |
| Heathrow to Chicago (O'hare) | 350 | 81.8% |
| Heathrow to Houston | 350 | 65.2% |
| Heathrow to Denver International | 180 | 85.4% |
| Edinburgh to New York (Newark) | 178 | 75.2% |
| Heathrow to Los Angeles International | 176 | 82.3% |
| Edinburgh to Washington (Dulles) | 4 | 75.0% |
| Heathrow to Boston | 1 | 100.0% |
Sources and caveats
Period covered comes from the data itself; the load date is when that data reached this service. The two are shown separately on purpose.
CAA UK airline data
Covers 2025 · Grain: airline and year
Loaded 05 Aug 2026
- Punctuality figures cover flights the CAA matched between schedule and operation; unmatched flights are excluded.