Cheap flights from London to Keflavík
2 airport pairs connect London and Keflavík: LGW–KEF and LHR–KEF. easyJet, Icelandair, TUI Airways and British Airways fly nonstop. The cheapest fare found was £37, on LGW–KEF.
London to Keflavík: every airport pair compared
| Route | Nonstop airlines | Flights a week | Time in the air | Cheapest fare found |
|---|---|---|---|---|
| London Gatwick → Keflavík LGW–KEF |    easyJet, Icelandair, TUI Airways | 7 | 2h 40m | £37 |
| London Heathrow → Keflavík LHR–KEF |  British Airways, Icelandair | 18 | 2h 32m | £76 |
Each route has its own guide with airlines, connections, the return flight and how to get into town.
London to Keflavík fares by month
Cheapest one-way fare found: £37 for December 2026 on easyJet, nonstop. Nonstop from £37.
- Oct ’26£107nonstop £150
- Nov ’26£58
- Dec ’26£37
- Jan ’27£54
- Apr ’27£161
- May ’27£102
- Jun ’27£94nonstop £131
- Jul ’27£181nonstop £219
Cheapest one-way fares per month of departure in the Aviasales price cache, found . Fares change by the hour: the live fare is shown when you search. Cheapest of all the airport pairs above, per month.
Getting into Keflavík from each airport
- KEF: Flybus, 45–60 min · all options
London to Keflavík: frequently asked questions
How much is a flight from London to Keflavík?
From £37 one-way, the cheapest fare found (LGW–KEF, December 2026; found 8 October 2026).
Which airports can I fly between London and Keflavík?
2 airport pairs: LGW–KEF and LHR–KEF.
Which airlines fly nonstop from London to Keflavík?
easyJet, Icelandair, TUI Airways and British Airways.
How long is the flight from London to Keflavík?
2h 32m in the air on LHR–KEF, the median of tracked flights.
What is the cheapest month to fly London to Keflavík?
December 2026, at £37 across all 2 airport pairs.
How many flights a week are there from London to Keflavík?
About 25 nonstop flights a week each way across 2 airport pairs, from tracked flights over the last 28 days.
What is the time difference between London and Keflavík?
Keflavík is 1 hour behind London.