Cheapest return flights from London to Keflavik in September from 134€

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

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

Return flights

20 Sep - 04 Oct Icelandair direct
11 Sep - 23 Sep Norwegian
30 Sep - 03 Oct easyJet
02 Sep - 06 Sep Icelandair direct
20 Sep - 23 Sep Icelandair direct
26 Sep - 03 Oct easyJet
27 Sep - 29 Sep Icelandair direct
20 Sep - 29 Sep Icelandair direct
20 Sep - 21 Sep Icelandair direct
10 Sep - 15 Sep Icelandair direct
20 Sep - 24 Sep Icelandair direct
10 Sep - 13 Sep Icelandair direct
01 Sep - 09 Sep Wizz Air Malta
27 Sep - 03 Oct easyJet
27 Sep - 06 Oct easyJet
29 Sep - 05 Oct Norwegian
24 Sep - 03 Oct Norwegian
25 Sep - 03 Oct Norwegian
22 Sep - 06 Oct Vueling Airlines
24 Sep - 01 Oct Icelandair direct

Also check the deals for one-way 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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