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

Return flights

02 Dec - 08 Dec	Norwegian Air Sweden AOC
02 Dec - 10 Dec	airBaltic
04 Dec - 17 Dec	airBaltic
05 Dec - 20 Dec	Ryanair
11 Dec - 15 Dec	airBaltic
04 Dec - 18 Dec	airBaltic
07 Dec - 10 Dec	Finnair
07 Dec - 11 Dec	Finnair
14 Dec - 22 Dec	Scandinavian Airlines
04 Dec - 25 Dec	Finnair	direct
24 Dec - 13 Jan	Finnair	direct
29 Dec - 19 Jan	Scandinavian Airlines
29 Dec - 19 Jan	Finnair	direct
23 Dec - 13 Jan	Finnair	direct
23 Dec - 12 Jan	Finnair	direct
21 Dec - 01 Jan	Finnair	direct
25 Dec - 08 Jan	Finnair	direct
26 Dec - 07 Jan	airBaltic
25 Dec - 05 Jan	airBaltic
26 Dec - 05 Jan	Ryanair

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 472€

Return flights