AirHint found the following cheapest return flights from Seoul (ICN) to Helsinki (HEL) in June 2025 (see full year).

Return flights

15 Jun - 22 Jun	Lufthansa
14 Jun - 22 Jun	Lufthansa
11 Jun - 16 Jun	Lufthansa
11 Jun - 18 Jun	Lufthansa
13 Jun - 18 Jun	Lufthansa
20 Jun - 23 Jun	KLM
16 Jun - 21 Jun	T'way Air
28 Jun - 05 Jul	China Eastern
19 Jun - 23 Jun	KLM
12 Jun - 15 Jun	Air France
12 Jun - 19 Jun	Air France
30 Jun - 04 Jul	Air France
26 Jun - 03 Jul	KLM
27 Jun - 02 Jul	Air France
28 Jun - 03 Jul	Lufthansa
26 Jun - 02 Jul	KLM
12 Jun - 16 Jul	Air France
28 Jun - 08 Jul	Lufthansa
29 Jun - 04 Jul	Lufthansa
30 Jun - 09 Jul	Lufthansa

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

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 June from $851

Return flights