Cheapest return ATH–KEF flights, September

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

Return flights

24 Sep - 04 Oct Wizz Air
11 Sep - 19 Sep Scandinavian Airlines
11 Sep - 20 Sep Scandinavian Airlines
15 Sep - 24 Sep easyJet
25 Sep - 28 Sep Ryanair
14 Sep - 17 Sep easyJet
26 Sep - 06 Oct easyJet
15 Sep - 22 Sep easyJet
21 Sep - 28 Sep easyJet
12 Sep - 20 Sep Transavia France
10 Sep - 17 Sep SKY express
20 Sep - 29 Sep Aegean 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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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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