STN to IST flight delays
201 flights · March 2025 – August 2026 · UK Civil Aviation Authority
74.13%
Arrived on time
Within 15 minutes of schedule
0%
Cancelled
Share of scheduled flights
—
When late, late by
Average across delayed arrivals
13 min
Delay per flight
Averaged over every flight flown
What the record says about this route
The two directions do not behave alike. IST to STN arrives on time 16.4 points more often than the outbound. Delay accumulates through the flying day, so whichever direction is scheduled later tends to carry the worse record — which is an argument for booking the morning departure if the choice exists.
Only Turkish Airlines 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.
This is a thin route — 201 flights across the whole period. On a route this infrequent a cancellation is far more costly than the rate suggests, because the next departure may not be the same day.
Flights from London to Istanbul run late more often than the average route, though not severely.
Which airline should you fly on this route?
Over March 2025 – August 2026, Turkish Airlines arrived on time most often on STN to IST. Flights ran closest to schedule in May and worst in March.
Every airline on STN to IST
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 |
|---|---|---|---|---|---|
| Turkish Airlines | 200 | 74% | 0% | — | C |
| Corendon Airlines | 1 | 100% | 0% | — | — |
Month by month
Share of flights that arrived within 15 minutes of schedule, by month flown.
The return leg
IST to STN Istanbul back to London 90.55% on time AOther routes from London
Common questions
Are flights from London to Istanbul usually delayed?
74.13% of flights on the STN to IST route arrived within 15 minutes of schedule, so roughly 3 in every ten arrived late. That is about the same as the average route in this record.
Which airlines fly from London to Istanbul?
Only Turkish Airlines appears in the published record on this route, with 200 flights and 74% arriving on time.
How often are STN to IST flights cancelled?
0% of scheduled flights did not operate — about 1 in every thousand. That is in the normal range.
What these figures do and do not tell you
Everything on this page is counted from the flights that actually operated on STN to IST 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 →