Cheapest return flights from Athens to Keflavik in September from $259

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

Return flights

30 Sep - 07 Oct easyJet
26 Sep - 07 Oct SKY express
22 Sep - 28 Sep easyJet
24 Sep - 03 Oct easyJet
13 Sep - 19 Sep SKY express
26 Sep - 03 Oct SKY express
10 Sep - 19 Sep Scandinavian Airlines
12 Sep - 17 Sep SKY express
10 Sep - 17 Sep easyJet
18 Sep - 29 Sep easyJet
17 Sep - 21 Sep easyJet
10 Sep - 18 Sep easyJet
07 Sep - 14 Sep Aegean Airlines
07 Sep - 11 Sep Aegean Airlines
25 Sep - 04 Oct easyJet
30 Sep - 14 Oct Vueling Airlines
26 Sep - 14 Oct Vueling Airlines

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

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