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

Return flights

13 May - 20 May	Air France
23 May - 30 May	Air France
06 May - 11 May	Air France
21 May - 31 May	Air France
07 May - 20 May	KLM
08 May - 15 May	Air France
16 May - 24 May	KLM
04 May - 24 May	Air France
27 May - 29 May	Singapore Airlines
13 May - 20 May	Finnair	direct
18 May - 05 Jun	Lufthansa

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 605€

Return flights