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

Return flights

06 Mar - 09 Mar	Lufthansa
06 Mar - 10 Mar	Lufthansa
03 Mar - 10 Mar	Lufthansa
02 Mar - 10 Mar	Lufthansa
02 Mar - 17 Mar	Scandinavian Airlines
09 Mar - 16 Mar	Lufthansa
06 Mar - 11 Mar	KLM
10 Mar - 18 Mar	Lufthansa
11 Mar - 18 Mar	Lufthansa
13 Mar - 16 Mar	Lufthansa
30 Mar - 11 Apr	Lufthansa
28 Mar - 12 Apr	Air France
27 Mar - 05 Apr	Air France
26 Mar - 04 Apr	Finnair	direct
30 Mar - 11 Apr	Finnair	direct
26 Mar - 02 Apr	Lufthansa
23 Mar - 03 Apr	Lufthansa

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

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 March from 518€

Return flights