How often is Thai Airways International delayed at Heathrow?
£520 per passenger if a 3+ hour delay hits this route
Effectively one route: Heathrow to Bangkok Suvarnabhumi, 9,578 km apart.
In the last 12 months, Thai Airways International operated 1,459 flights at Heathrow, and 0.1% were 3 or more hours late, the threshold where £520 per passenger becomes payable.
Effectively one route: Heathrow to Bangkok Suvarnabhumi, 9,578 km apart, which puts a delay of 3 hours or more in the £520 per passenger band.
Punctuality is up on last year: 83.8% of flights ran on time against 70.5% in the twelve months before, and the average delay fell from 14 to 8.3 minutes.
| Thai Airways International at Heathrow, last 12 months | Figure | vs year before |
|---|---|---|
| Flights at Heathrow | 1,459 | was 1,458 |
| Ran on time (within 15 min) | 83.8% | ▲ was 70.5% |
| Average delay | 8.3 min | ▼ was 14 min |
| 3h+ late (compensation threshold) | 0.1% | - |
| Cancelled | 0.1% | - |
| Flights 3h+ late (a year) | 1 flights/year | - |
The CAA's figures combine arrivals and departures, so this covers traffic both ways, not departures alone.
Thai Airways International at Heathrow, month by month
Worst month: April 2026, averaging 12.8 minutes.
Thai Airways International's busiest routes at Heathrow
| Destination | 3h+ % | 3h+ delay pays |
|---|---|---|
| Bangkok Suvarnabhumi | 0.1% | £520 |
Your rights on this route
Heathrow is a UK airport, so every flight departing from it is covered by UK261, whichever airline you fly with. Delays of 3 or more hours pay £220 to £520 per passenger depending on how far you were flying, and the table above gives the exact figure for each of these routes. See the full breakdown on the 3-hour rule. If the flight is cancelled instead of delayed, broadly the same amounts apply under different conditions. See cancelled flight compensation.
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Other airlines at Heathrow
Source: UK Civil Aviation Authority punctuality statistics, July 2025 to June 2026. Analysis by CheckFlightCompensation; the CAA is credited as the data source as its publication conditions require. Figures cover the 25 largest UK airports.