Cheapest return flights from London to Keflavik in September from $265

AirHint found the following cheapest return flights from London (LGW) to Keflavik (KEF) in September 2026 (see full year).

Return flights

09 Sep - 15 Sep Vueling Airlines
26 Sep - 04 Oct Icelandair direct
26 Sep - 06 Oct easyJet
22 Sep - 29 Sep easyJet
24 Sep - 01 Oct Icelandair direct
27 Sep - 03 Oct Icelandair direct
17 Sep - 22 Sep Icelandair direct
21 Sep - 28 Sep Icelandair direct
23 Sep - 30 Sep Icelandair direct
16 Sep - 28 Sep Icelandair direct
09 Sep - 15 Sep Icelandair direct
16 Sep - 23 Sep Icelandair direct
16 Sep - 30 Sep Icelandair direct
23 Sep - 27 Sep Icelandair direct
26 Sep - 07 Oct easyJet
28 Sep - 04 Oct Icelandair direct

Also check the deals for one-way flights from London to Keflavik in September.

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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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