Cheapest return flights from Athens to Keflavik in December from 175€

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

Return flights

10 Dec - 17 Dec easyJet
01 Dec - 06 Dec SKY express
06 Dec - 10 Dec easyJet
13 Dec - 18 Dec easyJet
06 Dec - 13 Dec easyJet
05 Dec - 08 Dec Ryanair
08 Dec - 13 Dec easyJet
01 Dec - 07 Dec easyJet
09 Dec - 18 Dec easyJet
15 Dec - 22 Dec Aegean Airlines
31 Dec - 07 Jan Wizz Air UK
31 Dec - 06 Jan Wizz Air UK
25 Dec - 01 Jan SKY express
24 Dec - 04 Jan Aegean Airlines
30 Dec - 03 Jan Scandinavian Airlines

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

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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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