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

Return flights

11 Mar - 15 Mar	LOT
02 Mar - 12 Mar	Scandinavian Airlines
02 Mar - 05 Mar	Scandinavian Airlines
06 Mar - 10 Mar	Scandinavian Airlines
04 Mar - 19 Mar	Scandinavian Airlines
14 Mar - 21 Mar	Finnair
03 Mar - 10 Mar	Finnair
01 Mar - 10 Mar	Finnair
01 Mar - 08 Mar	Finnair
09 Mar - 16 Mar	Finnair
26 Mar - 05 Apr	Finnair
26 Mar - 04 Apr	Air China
22 Mar - 03 Apr	Emirates

Also check the deals for one-way flights from Seoul to Keflavik in March.

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 March from 540€

Return flights