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

Return flights

04 Dec - 07 Dec	Norse Atlantic Airways
04 Dec - 13 Dec	Norse Atlantic Airways
05 Dec - 10 Dec	IndiGo
30 Dec - 03 Jan	Norse Atlantic Airways
29 Dec - 08 Jan	KLM
20 Dec - 26 Dec	Norse Atlantic Airways
18 Dec - 25 Dec	Norse Atlantic Airways
22 Dec - 31 Dec	IndiGo
19 Dec - 27 Dec	Qatar Airways
17 Dec - 26 Dec	Qatar Airways
26 Dec - 02 Jan	Qatar Airways
26 Dec - 02 Jan	Finnair	direct
29 Dec - 08 Jan	Finnair	direct
22 Dec - 31 Dec	Finnair	direct
20 Dec - 26 Dec	Finnair	direct
30 Dec - 03 Jan	Finnair	direct
20 Dec - 05 Jan	Scandinavian Airlines

Also check the deals for one-way flights from Bangkok 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 Bangkok to Helsinki in December from 548€

Return flights