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

Return flights

08 Apr - 21 Apr	Scandinavian Airlines
02 Apr - 12 Apr	Lufthansa
06 Apr - 12 Apr	Lufthansa
25 Apr - 30 Apr	Scandinavian Airlines
24 Apr - 12 May	Lufthansa
05 Apr - 30 Apr	Finnair
19 Apr - 22 Apr	LOT
29 Apr - 04 May	Lufthansa
01 Apr - 15 Apr	Qatar Airways
12 Apr - 18 Apr	Finnair
23 Apr - 25 Apr	Qatar Airways
24 Apr - 04 May	Finnair
30 Apr - 08 May	Lufthansa
11 Apr - 17 Apr	T'way Air
30 Apr - 09 May	Qatar Airways

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.

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Cheapest return flights from Seoul to Keflavik in April from $731

Return flights