LGW to KEF flight delays
369 flights · January 2025 – August 2026 · UK Civil Aviation Authority
79.95%
Arrived on time
Within 15 minutes of schedule
1.36%
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 April it ran 25.9 points more punctual than in June — 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 Icelandair 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 — 369 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.
The London to Reykjavík route sits close to the middle of the record — neither notably punctual nor notably late.
Which airline should you fly on this route?
Over January 2025 – August 2026, Icelandair arrived on time most often on LGW to KEF. Flights ran closest to schedule in April and worst in June.
Every airline on LGW to KEF
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 |
|---|---|---|---|---|---|
| Icelandair | 257 | 76.77% | 1.17% | — | C |
| easyJet | 96 | 88.3% | 2.08% | — | — |
| TUI Airways | 16 | 81.25% | 0% | — | — |
Month by month
Share of flights that arrived within 15 minutes of schedule, by month flown.
The return leg
KEF to LGW Reykjavík back to London 83.84% on time BCommon questions
Are flights from London to Reykjavík usually delayed?
79.95% of flights on the LGW to KEF route arrived within 15 minutes of schedule, so roughly 2 in every ten arrived late. That is about the same as the average route in this record.
Which airlines fly from London to Reykjavík?
Only Icelandair appears in the published record on this route, with 257 flights and 76.77% arriving on time.
How often are LGW to KEF flights cancelled?
1.36% of scheduled flights did not operate — about 14 in every thousand. That is in the normal range.
What is the best month to fly London to Reykjavík?
April, when 91.9% of flights arrived on time. The worst was June at 66%.
What these figures do and do not tell you
Everything on this page is counted from the flights that actually operated on LGW to KEF 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 →