Cheapest return ICN–KEF flights, September

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

Return flights

28 Sep - 05 Oct Scandinavian Airlines
29 Sep - 13 Oct Scandinavian Airlines
07 Sep - 21 Sep Finnair
26 Sep - 30 Sep Scandinavian Airlines
14 Sep - 18 Sep Finnair
04 Sep - 06 Sep Finnair
05 Sep - 17 Sep Finnair
14 Sep - 19 Sep Finnair
01 Sep - 08 Sep Finnair
25 Sep - 06 Oct Scandinavian Airlines
25 Sep - 05 Oct Scandinavian Airlines
26 Sep - 10 Oct Scat Airlines
04 Sep - 11 Sep Finnair
09 Sep - 23 Sep Finnair
01 Sep - 23 Oct Scandinavian Airlines
01 Sep - 20 Sep Finnair
30 Sep - 13 Oct Qatar Airways
24 Sep - 05 Oct Scandinavian Airlines
25 Sep - 10 Oct Parata Air
30 Sep - 07 Oct Finnair

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

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