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

Return flights

25 Jan - 29 Jan	easyJet
19 Jan - 25 Jan	Wizz Air UK
23 Jan - 28 Jan	SKY express
12 Jan - 19 Jan	Wizz Air UK
21 Jan - 25 Jan	Wizz Air UK
22 Jan - 25 Jan	Wizz Air UK
27 Jan - 01 Feb	Wizz Air UK
09 Jan - 19 Jan	SKY express
28 Jan - 01 Feb	SKY express
16 Jan - 01 Feb	SKY express
07 Jan - 11 Jan	Wizz Air UK
10 Jan - 14 Jan	Wizz Air UK
07 Jan - 12 Jan	Wizz Air UK
30 Jan - 09 Feb	SKY express
30 Jan - 08 Feb	Ryanair

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

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 January from $176

Return flights