AirHint found the following cheapest return flights from Athens (ATH) to Keflavik (KEF) in June 2025 (see full year).

Return flights

26 Jun - 29 Jun	Wizz Air
26 Jun - 01 Jul	Ryanair
14 Jun - 24 Jun	Wizz Air
26 Jun - 06 Jul	Ryanair
23 Jun - 02 Jul	easyJet
26 Jun - 03 Jul	Ryanair
23 Jun - 28 Jun	Wizz Air
26 Jun - 02 Jul	Ryanair
23 Jun - 01 Jul	Wizz Air
25 Jun - 03 Jul	Ryanair
20 Jun - 22 Jun	Wizz Air
23 Jun - 03 Jul	Wizz Air
26 Jun - 16 Jul	Ryanair
24 Jun - 01 Jul	Ryanair
25 Jun - 29 Jun	Ryanair
14 Jun - 17 Jun	Wizz Air
17 Jun - 20 Jun	Ryanair
18 Jun - 25 Jun	easyJet
12 Jun - 15 Jun	Ryanair
13 Jun - 20 Jun	Wizz Air

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

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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Cheapest return flights from Athens to Keflavik in June from $336

Return flights