CLJ to STN flight delays
Cluj-Napoca (CLJ) London (STN)
98 flights · January 2025 – August 2026 · UK Civil Aviation Authority
72.45%
Arrived on time
Within 15 minutes of schedule
0%
Cancelled
Share of scheduled flights
—
When late, late by
Average across delayed arrivals
15 min
Delay per flight
Averaged over every flight flown
What the record says about this route
The two directions do not behave alike. STN to CLJ arrives on time 10.2 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.
Flights from Cluj-Napoca to London run late more often than the average route, though not severely.
Every airline on CLJ to STN
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 |
|---|---|---|---|---|---|
| Ryanair | 97 | 73.2% | 0% | — | — |
| Ryanair UK | 1 | 0% | 0% | — | — |
Month by month
Share of flights that arrived within 15 minutes of schedule, by month flown.
The return leg
STN to CLJ London back to Cluj-Napoca 82.65% on time —Other routes from Cluj-Napoca
Common questions
Are flights from Cluj-Napoca to London usually delayed?
72.45% of flights on the CLJ to STN route arrived within 15 minutes of schedule, so roughly 3 in every ten arrived late. That is worse than the average route in this record.
How often are CLJ to STN 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 CLJ to STN during January 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 →