Cheapest return flights from Seoul to Keflavik in April from $679

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

Return flights

01 Apr - 09 Apr SWISS
01 Apr - 11 Apr SWISS
01 Apr - 07 Apr Scandinavian Airlines
01 Apr - 30 Apr SWISS
16 Apr - 20 Apr LOT
03 Apr - 10 Apr Scandinavian Airlines
20 Apr - 27 Apr Finnair
19 Apr - 22 Apr LOT
06 Apr - 17 May Scandinavian Airlines
06 Apr - 01 May Finnair
06 Apr - 17 Apr Finnair
08 Apr - 11 Apr SWISS
29 Apr - 04 May KLM
26 Apr - 02 May Lufthansa

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

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