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

Return flights

23 Jan - 28 Jan	SKY express
25 Jan - 29 Jan	easyJet
17 Jan - 28 Jan	easyJet
19 Jan - 25 Jan	Wizz Air UK
21 Jan - 25 Jan	Wizz Air UK
15 Jan - 18 Jan	Wizz Air UK
17 Jan - 25 Jan	Wizz Air UK
10 Jan - 18 Jan	Wizz Air UK
18 Jan - 22 Jan	easyJet
15 Jan - 19 Jan	Wizz Air UK
30 Jan - 01 Feb	Wizz Air UK

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 142€

Return flights