Cheapest one-way flights from London to Keflavik in September from $104

Best time to book flights for London (LGW) to Keflavik (KEF) flights at AirHint

AirHint found the following cheapest one-way flights from London (LGW) to Keflavik (KEF) in September 2025 (see full year).

One-Way flights

19 Sep easyJet
16 Sep easyJet
30 Sep easyJet
14 Sep easyJet
09 Sep easyJet
06 Sep easyJet
07 Sep Wizz Air Malta
13 Sep easyJet
20 Sep easyJet
28 Sep Wizz Air Malta

Also check the deals for return flights from London to Keflavik in September.

Skyscanner

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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