Cheapest return flights from London to Keflavik in September from 162€

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

Return flights

30 Sep - 08 Oct Scandinavian Airlines
03 Sep - 08 Sep Scandinavian Airlines
10 Sep - 14 Sep Scandinavian Airlines
17 Sep - 29 Sep Scandinavian Airlines
03 Sep - 09 Sep Scandinavian Airlines
09 Sep - 16 Sep SWISS
10 Sep - 17 Sep Scandinavian Airlines
22 Sep - 03 Oct Austrian Airlines
24 Sep - 04 Oct Icelandair direct
04 Sep - 08 Sep Scandinavian Airlines
30 Sep - 04 Oct Icelandair direct
03 Sep - 18 Sep Scandinavian Airlines
25 Sep - 10 Oct Icelandair direct
12 Sep - 21 Sep Austrian Airlines
14 Sep - 21 Sep SWISS
30 Sep - 08 Oct Icelandair direct
30 Sep - 03 Oct Scandinavian Airlines
25 Sep - 02 Oct Icelandair direct
25 Sep - 05 Oct Icelandair direct
28 Sep - 02 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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