Cheapest return flights from London to Keflavik in September from 306€

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

Return flights

09 Sep - 15 Sep Lufthansa
17 Sep - 20 Sep KLM
03 Sep - 06 Sep KLM
16 Sep - 24 Sep Lufthansa
14 Sep - 24 Sep Lufthansa
24 Sep - 01 Oct KLM
22 Sep - 29 Sep KLM
23 Sep - 27 Sep Lufthansa
17 Sep - 28 Sep KLM
13 Sep - 24 Sep Lufthansa
21 Sep - 28 Sep Lufthansa
29 Sep - 06 Oct SWISS
26 Sep - 04 Oct KLM
28 Sep - 04 Oct KLM

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

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