Cheapest return flights from London to Keflavik in September from 226€

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

Return flights

30 Sep - 04 Oct KLM
11 Sep - 11 Oct Icelandair direct
02 Sep - 01 Oct British Airways
17 Sep - 24 Sep KLM
26 Sep - 04 Oct Icelandair direct
27 Sep - 06 Oct Icelandair direct
30 Sep - 04 Oct Icelandair direct
30 Sep - 07 Oct Icelandair direct
29 Sep - 04 Oct Icelandair direct
03 Sep - 08 Sep Scandinavian Airlines
17 Sep - 22 Sep Scandinavian Airlines
02 Sep - 01 Oct Icelandair direct
03 Sep - 15 Sep Scandinavian Airlines
21 Sep - 24 Sep British Airways
22 Sep - 24 Sep British Airways
03 Sep - 14 Sep Scandinavian Airlines
01 Sep - 30 Sep Icelandair direct
04 Sep - 11 Sep Icelandair direct
05 Sep - 12 Sep Icelandair direct
27 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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