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

Return flights

25 May - 31 May	KLM
12 May - 19 May	KLM
04 May - 18 May	Air France
01 May - 08 May	Lufthansa
01 May - 09 May	Singapore Airlines
17 May - 24 May	KLM
12 May - 19 May	Finnair	direct
25 May - 31 May	Finnair	direct
04 May - 18 May	Finnair	direct
01 May - 08 May	Finnair	direct

Also check the deals for one-way flights from Seoul to Helsinki in May.

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 May from $745

Return flights