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

Return flights

10 Dec - 14 Dec	Vueling Airlines
31 Dec - 07 Jan	Vueling Airlines
21 Dec - 06 Jan	Vueling Airlines
20 Dec - 10 Jan	Air Europa
06 Dec - 11 Dec	Vueling Airlines
24 Dec - 01 Jan	Vueling Airlines
21 Dec - 05 Jan	Vueling Airlines
06 Dec - 14 Dec	Air Europa
06 Dec - 08 Dec	Air Europa
25 Dec - 31 Dec	Vueling Airlines
23 Dec - 01 Jan	Air Europa
07 Dec - 14 Dec	Vueling Airlines
27 Dec - 06 Jan	Air Europa
25 Dec - 01 Jan	Vueling Airlines
26 Dec - 01 Jan	Volotea
26 Dec - 03 Jan	Volotea
04 Dec - 09 Dec	Vueling Airlines
19 Dec - 22 Dec	Air Europa
23 Dec - 28 Dec	Turkish Airlines

Also check the deals for one-way flights from Bilbao 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 Bilbao to Helsinki in December from $287

Return flights