AirHint found the following cheapest one-way flights from Seoul (GMP) to Helsinki (HEL) in August 2025 (see full year).

One-Way flights

30 Aug	Air China
26 Aug	Air China
06 Aug	China Eastern
11 Aug	Air China
03 Aug	China Eastern
21 Aug	Japan Airlines
19 Aug	Japan Airlines
01 Aug	Juneyao Airlines
09 Aug	Japan Airlines
15 Aug	Japan Airlines

Also check the deals for return 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 one-way flights from Seoul to Helsinki in August from 367€

One-Way flights