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

Return flights

13 Aug - 24 Aug	Lufthansa
03 Aug - 13 Aug	Lufthansa
20 Aug - 23 Aug	Lufthansa
13 Aug - 18 Aug	Lufthansa
12 Aug - 18 Aug	Lufthansa
26 Aug - 03 Sep	Lufthansa
04 Aug - 12 Aug	Lufthansa
03 Aug - 10 Aug	Lufthansa
13 Aug - 17 Aug	Lufthansa
10 Aug - 17 Aug	Lufthansa
15 Aug - 22 Aug	Lufthansa
26 Aug - 03 Sep	Finnair	direct
18 Aug - 17 Sep	Scandinavian Airlines
12 Aug - 26 Sep	Finnair	direct

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

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 August from 516€

Return flights