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

Return flights

04 Dec - 06 Dec	Ryanair	direct
13 Dec - 15 Dec	Ryanair	direct
04 Dec - 07 Dec	Ryanair	direct
11 Dec - 13 Dec	Ryanair	direct
05 Dec - 08 Dec	Ryanair
01 Dec - 04 Dec	Ryanair	direct
01 Dec - 07 Dec	Ryanair
03 Dec - 04 Dec	Ryanair
11 Dec - 18 Dec	Ryanair	direct
04 Dec - 09 Dec	Ryanair
29 Dec - 01 Jan	Ryanair	direct
15 Dec - 03 Jan	Ryanair	direct
14 Dec - 03 Jan	Ryanair	direct
30 Dec - 02 Jan	airBaltic
26 Dec - 01 Jan	Ryanair
27 Dec - 01 Jan	Ryanair	direct
18 Dec - 03 Jan	Ryanair	direct
19 Dec - 05 Jan	Ryanair
26 Dec - 04 Jan	Ryanair
27 Dec - 04 Jan	Ryanair

Also check the deals for one-way flights from Brussels 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 Brussels to Helsinki in December from $109

Return flights