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

Return flights

29 Apr - 05 May	Turkish Airlines
18 Apr - 02 May	Turkish Airlines
29 Apr - 05 May	Finnair	direct
06 Apr - 20 Apr	Finnair	direct
01 Apr - 22 Apr	Finnair	direct
16 Apr - 25 Apr	Finnair	direct
18 Apr - 02 May	Finnair	direct
03 Apr - 16 Apr	Finnair	direct

Also check the deals for one-way flights from Helsinki to Seoul 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 Helsinki to Seoul in April from $726

Return flights