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

Return flights

28 Jan - 05 Feb	Scandinavian Airlines
19 Jan - 29 Jan	Scandinavian Airlines
12 Jan - 25 Jan	Scandinavian Airlines
13 Jan - 22 Jan	Asiana Airlines
13 Jan - 20 Jan	Asiana Airlines
05 Jan - 13 Jan	Scandinavian Airlines
10 Jan - 18 Jan	LOT
01 Jan - 31 Jan	Finnair
16 Jan - 24 Jan	Finnair
01 Jan - 11 Jan	Finnair
21 Jan - 28 Jan	Finnair
29 Jan - 04 Feb	Finnair
30 Jan - 11 Feb	Finnair
28 Jan - 11 Feb	Finnair
29 Jan - 12 Feb	Finnair

Also check the deals for one-way flights from Seoul 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 Seoul to Keflavik in January from 554€

Return flights