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

Return flights

15 Apr - 24 Apr	Scandinavian Airlines
29 Apr - 05 May	Scandinavian Airlines
29 Apr - 10 May	Scandinavian Airlines
24 Apr - 01 May	Scandinavian Airlines
01 Apr - 12 Apr	Lufthansa
10 Apr - 19 Apr	Finnair
03 Apr - 07 Apr	Finnair
14 Apr - 21 Apr	Finnair
03 Apr - 11 Apr	Finnair
08 Apr - 17 Apr	Scandinavian Airlines
23 Apr - 25 Apr	Lufthansa
28 Apr - 10 May	LOT
30 Apr - 13 May	LOT
30 Apr - 12 May	Lufthansa
30 Apr - 14 May	Lufthansa
28 Apr - 08 May	Singapore Airlines
29 Apr - 11 May	Singapore Airlines

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

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.

Book a cheap hotel in Keflavik

Cheap car rent in Keflavik

Cheapest return flights from Seoul to Keflavik in April from $659

Return flights