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

Return flights

10 Dec - 17 Dec	KLM
12 Dec - 23 Dec	Ryanair
24 Dec - 12 Jan	Ryanair
30 Dec - 16 Jan	Air France
09 Dec - 17 Dec	Scandinavian Airlines
15 Dec - 23 Dec	Finnair	direct
13 Dec - 25 Dec	Ryanair
14 Dec - 22 Dec	Scandinavian Airlines
12 Dec - 22 Dec	Finnair
07 Dec - 15 Dec	Finnair	direct
08 Dec - 16 Dec	Finnair	direct
09 Dec - 17 Dec	Finnair	direct
30 Dec - 16 Jan	Finnair	direct
14 Dec - 10 Jan	Finnair
15 Dec - 10 Jan	airBaltic
23 Dec - 08 Jan	Norwegian Air Sweden AOC
26 Dec - 08 Jan	airBaltic
15 Dec - 07 Jan	Norwegian Air Sweden AOC
25 Dec - 01 Jan	Finnair
15 Dec - 06 Jan	Norwegian Air Sweden AOC

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

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.

Book a cheap hotel in Seoul

Cheap car rent in Seoul

Cheapest return flights from Helsinki to Seoul in December from $825

Return flights