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

Return flights

01 Dec - 06 Dec	Vueling Airlines
06 Dec - 11 Dec	Vueling Airlines
08 Dec - 12 Dec	Vueling Airlines
11 Dec - 15 Dec	easyJet
09 Dec - 14 Dec	Vueling Airlines
06 Dec - 13 Dec	Vueling Airlines
02 Dec - 10 Dec	Vueling Airlines
03 Dec - 08 Dec	Vueling Airlines
04 Dec - 08 Dec	easyJet
05 Dec - 09 Dec	Vueling Airlines
19 Dec - 05 Jan	Vueling Airlines
22 Dec - 04 Jan	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 163€

Return flights