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

Return flights

14 May - 19 May	Lufthansa
20 May - 27 May	Lufthansa
13 May - 20 May	Lufthansa
04 May - 18 May	Lufthansa
29 May - 10 Jun	Lufthansa
22 May - 02 Jun	Lufthansa
22 May - 03 Jun	Lufthansa
25 May - 28 May	Scandinavian Airlines
10 May - 28 May	Lufthansa
29 May - 05 Jun	Scandinavian Airlines
22 May - 24 Jun	Lufthansa
27 May - 29 May	Etihad Airways
14 May - 21 May	KLM
15 May - 22 May	Lufthansa
01 May - 10 May	Lufthansa
29 May - 05 Jun	Finnair	direct
22 May - 03 Jun	Finnair	direct
22 May - 02 Jun	Finnair	direct
29 May - 10 Jun	Finnair	direct
22 May - 24 Jun	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 519€

Return flights