Cheapest return ICN–KEF flights, May

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

Return flights

09 May - 16 May Lufthansa
09 May - 17 May Lufthansa
21 May - 04 Jun Lufthansa
09 May - 22 May Lufthansa
09 May - 11 May Lufthansa
08 May - 10 May Lufthansa
13 May - 19 May Lufthansa
13 May - 17 May Lufthansa
21 May - 03 Jun Lufthansa
08 May - 18 May Lufthansa
20 May - 04 Jun SWISS
11 May - 22 May Lufthansa
07 May - 14 May KLM
21 May - 02 Jun Lufthansa
21 May - 05 Jun Lufthansa
19 May - 02 Jun Scandinavian Airlines
19 May - 03 Jun Scandinavian Airlines
26 May - 03 Jun Qatar Airways
26 May - 05 Jun Qatar Airways
27 May - 13 Jun SWISS

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

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