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

Return flights

01 Apr - 08 Apr	Lufthansa
09 Apr - 14 Apr	Lufthansa
29 Apr - 05 May	Lufthansa
08 Apr - 12 Apr	Lufthansa
17 Apr - 22 Apr	Lufthansa
29 Apr - 06 May	Lufthansa
30 Apr - 08 May	Lufthansa
30 Apr - 04 May	Lufthansa
30 Apr - 10 May	Lufthansa
25 Apr - 05 May	Lufthansa
23 Apr - 25 Apr	Lufthansa
05 Apr - 18 Apr	Lufthansa
09 Apr - 14 Apr	Finnair	direct
08 Apr - 12 Apr	Finnair	direct
25 Apr - 03 May	Scandinavian Airlines
29 Apr - 05 May	Finnair	direct
25 Apr - 28 Apr	Scandinavian Airlines
17 Apr - 22 Apr	Finnair	direct
29 Apr - 06 May	Finnair	direct
30 Apr - 08 May	Finnair	direct

Also check the deals for one-way flights from Seoul to Helsinki 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 Helsinki in April from 599€

Return flights