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

Return flights

11 Mar - 24 Mar	Scandinavian Airlines
09 Mar - 19 Mar	Scandinavian Airlines
12 Mar - 21 Mar	Lufthansa
09 Mar - 30 Mar	LOT
27 Mar - 13 Apr	Lufthansa
09 Mar - 29 Mar	LOT
25 Mar - 05 Apr	Finnair
14 Mar - 26 Mar	Finnair
11 Mar - 18 Mar	Finnair
11 Mar - 25 Mar	Finnair
28 Mar - 05 Apr	Finnair
29 Mar - 05 Apr	Finnair
08 Mar - 21 Mar	Finnair
09 Mar - 16 Mar	Finnair
28 Mar - 04 Apr	Finnair
28 Mar - 11 Apr	Finnair
27 Mar - 10 Apr	Finnair

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 $685

Return flights