AirHint found the following cheapest return flights from Seoul (ICN) to Helsinki (HEL) in December 2026 (see full year).

Return flights

11 Dec - 23 Dec	Lufthansa
01 Dec - 08 Dec	Lufthansa
09 Dec - 23 Dec	Lufthansa
01 Dec - 07 Dec	Lufthansa
02 Dec - 09 Dec	Lufthansa
09 Dec - 16 Dec	Lufthansa
02 Dec - 10 Dec	Lufthansa
23 Dec - 03 Jan	Lufthansa
14 Dec - 20 Dec	Lufthansa
07 Dec - 15 Dec	Lufthansa
01 Dec - 15 Dec	Lufthansa
23 Dec - 01 Jan	Lufthansa
29 Dec - 02 Jan	Lufthansa
23 Dec - 02 Jan	Lufthansa
24 Dec - 02 Jan	Lufthansa
27 Dec - 03 Jan	Lufthansa
27 Dec - 01 Jan	Lufthansa
26 Dec - 01 Jan	Lufthansa
27 Dec - 02 Jan	Lufthansa
27 Dec - 03 Jan	Finnair	direct

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.

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Cheapest return flights from Seoul to Helsinki in December from 489€

Return flights