Cheapest return ATH–KEF flights, May

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

Return flights

27 May - 02 Jun Ryanair
28 May - 02 Jun Ryanair
21 May - 26 May SKY express
26 May - 01 Jun Ryanair
26 May - 02 Jun Ryanair
27 May - 03 Jun Ryanair
29 May - 07 Jun Wizz Air
23 May - 26 May Wizz Air
28 May - 03 Jun Ryanair
28 May - 01 Jun Ryanair
29 May - 02 Jun Wizz Air
31 May - 06 Jun Ryanair
23 May - 24 May Wizz Air
28 May - 31 May Ryanair
26 May - 31 May Ryanair
26 May - 30 May Ryanair
22 May - 28 May Air Serbia
22 May - 26 May Wizz Air
25 May - 31 May Wizz Air
23 May - 29 May Transavia France

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

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