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

Return flights

25 Apr - 08 May	Scandinavian Airlines
27 Apr - 05 May	Scandinavian Airlines
01 Apr - 08 Apr	Finnair
25 Apr - 04 May	LOT
23 Apr - 30 Apr	Lufthansa
10 Apr - 18 Apr	Finnair
11 Apr - 18 Apr	Scandinavian Airlines
23 Apr - 25 Apr	Lufthansa
04 Apr - 17 Apr	Scandinavian 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 $691

Return flights