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

One-Way flights

28 Aug	Pegasus Airlines
26 Aug	Juneyao Airlines
31 Aug	Juneyao Airlines
20 Aug	Norwegian
27 Aug	Norwegian
25 Aug	Pegasus Airlines
18 Aug	Norwegian Air Sweden AOC
23 Aug	Pegasus Airlines
13 Aug	Pegasus Airlines
29 Aug	Pegasus Airlines

Also check the deals for return flights from Helsinki to Seoul 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 Helsinki to Seoul in August from 347€

One-Way flights