PRG to LHR flight delays
2,309 flights · March 2025 – August 2026 · UK Civil Aviation Authority
81.45%
Arrived on time
Within 15 minutes of schedule
1%
Cancelled
Share of scheduled flights
—
When late, late by
Average across delayed arrivals
10 min
Delay per flight
Averaged over every flight flown
What the record says about this route
The season swings this route hard. In March it ran 27.8 points more punctual than in September — a difference bigger than the one between the best and worst airlines on most routes. If the date is flexible, it is worth more than the carrier.
Only British Airways flies this route in the published record, so there is no choice to weigh — the route's figures and the airline's are the same figures.
The Prague to London route sits close to the middle of the record — neither notably punctual nor notably late.
Which airline should you fly on this route?
Over March 2025 – August 2026, British Airways arrived on time most often on PRG to LHR. Flights ran closest to schedule in March and worst in September.
Every airline on PRG to LHR
Ranked by how many flights each one operated. A carrier with fewer than 100 flights in the period is listed but not graded.
| Airline | Flights | On time | Cancelled | Avg delay | Grade |
|---|---|---|---|---|---|
| British Airways | 2,309 | 81.45% | 1% | — | B |
Month by month
Share of flights that arrived within 15 minutes of schedule, by month flown.
The return leg
LHR to PRG London back to Prague 79.26% on time CCommon questions
Are flights from Prague to London usually delayed?
81.45% of flights on the PRG to LHR route arrived within 15 minutes of schedule, so roughly 2 in every ten arrived late. That is better than the average route in this record.
Which airlines fly from Prague to London?
Only British Airways appears in the published record on this route, with 2,309 flights and 81.45% arriving on time.
How often are PRG to LHR flights cancelled?
1% of scheduled flights did not operate — about 10 in every thousand. That is in the normal range.
What is the best month to fly Prague to London?
March, when 91.6% of flights arrived on time. The worst was September at 63.8%.
What these figures do and do not tell you
Everything on this page is counted from the flights that actually operated on PRG to LHR during March 2025 – August 2026, as reported by the airlines to the US Bureau of Transportation Statistics. "On time" is the federal definition: arriving at the gate within 15 minutes of the scheduled time.
A route's record is a description of the past, not a forecast. Weather, air traffic control and the aircraft's earlier flights that day drive most delays, and none of them are predictable from a historical rate. What the record does tell you is whether this route runs late more often than others, and which carrier on it has the better history — which is the part you can actually act on when you book.
Cancellations are counted separately from delays because they are a different problem for a traveller: a late flight still gets you there. How the grade is calculated →