Cheapest return flights from London to Keflavik in September from 181€

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

Return flights

22 Sep - 30 Sep easyJet
18 Sep - 30 Sep easyJet
23 Sep - 30 Sep Ryanair
15 Sep - 24 Sep Ryanair
15 Sep - 23 Sep easyJet
21 Sep - 01 Oct Ryanair
16 Sep - 24 Sep Ryanair
16 Sep - 23 Sep Ryanair
07 Sep - 17 Sep Ryanair
21 Sep - 30 Sep Ryanair
23 Sep - 29 Sep Ryanair
24 Sep - 01 Oct Ryanair
26 Sep - 03 Oct Ryanair
27 Sep - 03 Oct Ryanair
21 Sep - 02 Oct Ryanair
22 Sep - 02 Oct Ryanair
24 Sep - 02 Oct Ryanair
23 Sep - 02 Oct Ryanair
25 Sep - 02 Oct Ryanair

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

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