AirHint found the following cheapest one-way flights from Bilbao (BIO) to Brussels (BRU) in December 2025 (see full year).

One-Way flights

01 Dec	Vueling Airlines	direct
19 Dec	Vueling Airlines	direct
29 Dec	Vueling Airlines	direct
26 Dec	Vueling Airlines	direct
21 Dec	Vueling Airlines
11 Dec	Vueling Airlines
07 Dec	Vueling Airlines
06 Dec	Vueling Airlines
20 Dec	Vueling Airlines
09 Dec	Vueling Airlines

Also check the deals for return flights from Bilbao to Brussels 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.

Book a cheap hotel in Brussels

Cheap car rent in Brussels

Cheapest one-way flights from Bilbao to Brussels in December from $48

One-Way flights