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

Return flights

01 Dec - 30 Jan	Air China
03 Dec - 07 Dec	Air China
17 Dec - 06 Jan	Japan Airlines
02 Dec - 06 Dec	Air China
15 Dec - 31 Dec	Air China
23 Dec - 30 Dec	Air China
18 Dec - 06 Jan	Japan Airlines
22 Dec - 06 Jan	Japan Airlines
19 Dec - 03 Jan	Air China
10 Dec - 14 Dec	Japan Airlines
31 Dec - 06 Jan	Japan Airlines
29 Dec - 06 Jan	Japan Airlines
12 Dec - 17 Dec	Japan Airlines
08 Dec - 12 Dec	Japan Airlines
17 Dec - 05 Jan	Japan Airlines
30 Dec - 13 Jan	Japan Airlines
19 Dec - 26 Dec	Air China
28 Dec - 07 Jan	Japan Airlines
20 Dec - 26 Dec	Air China
11 Dec - 18 Dec	Japan Airlines

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

Cheap car rent in Helsinki

Cheapest return flights from Seoul to Helsinki in December from 718€

Return flights