Flights between Heathrow and Prague: what a delay is worth
Leaving Heathrow
£220 per passenger, UK261
Leaving Prague
€250 per passenger, EU261
Prague is in the EU, so this applies whichever airline you fly.
Either figure is payable only when the delay was within the airline's control. A technical fault, a crew shortage or a late inbound aircraft all count; genuinely extraordinary circumstances such as severe weather or an air traffic control restriction do not.
Heathrow and Prague are 1,044 km apart (1,500 km or less), and that distance is all that decides the amount. Which figure applies depends only on which end of the route you departed from, not which way you were travelling.
In the last 12 months, 3,435 flights operated between Heathrow and Prague, and 0.3% were 3 or more hours late, the threshold where £220 per passenger becomes payable under UK261 (€250 under EU261).
Punctuality is up on last year: 79.5% of flights ran on time against 74.8% in the twelve months before, and the average delay fell from 13.4 to 10.8 minutes.
| Heathrow to Prague, last 12 months | Figure | vs year before |
|---|---|---|
| Flights on this route | 3,435 | was 3,419 |
| Ran on time (within 15 min) | 79.5% | ▲ was 74.8% |
| Average delay | 10.8 min | ▼ was 13.4 min |
| 3h+ late (compensation threshold) | 0.3% | - |
| Cancelled | 0.8% | - |
| Flights 3h+ late (a year) | 10 flights/year | - |
The CAA's figures don't separate arrivals from departures, so this covers the route both ways.
Heathrow to Prague, month by month
Worst month: July 2025, averaging 17.8 minutes.
Airlines flying this route
| Airline | 3h+ % | On-time % |
|---|---|---|
| British Airways | 0.3% | 79.5% |
Your rights on this route
Every flight leaving Heathrow for Prague is covered by UK261, whichever airline operates it. Flights the other way, leaving Prague for Heathrow, are covered too if a UK or EU airline operated them; a flight that way on a non-UK, non-EU carrier falls outside UK261, though the Montreal Convention may still give you a claim. See the full breakdown on the 3-hour rule. Cancelled instead of delayed? Broadly the same amounts apply under different conditions. See cancelled flight compensation. Flying somewhere else in Czech Republic? See every route between the UK and Czech Republic.
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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.