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

Return flights

10 Dec - 15 Dec	Vueling Airlines
11 Dec - 15 Dec	Vueling Airlines
04 Dec - 07 Dec	Vueling Airlines
02 Dec - 04 Dec	Vueling Airlines
06 Dec - 09 Dec	Vueling Airlines
04 Dec - 08 Dec	Vueling Airlines
18 Dec - 22 Dec	Vueling Airlines
06 Dec - 07 Dec	Vueling Airlines
06 Dec - 08 Dec	Vueling Airlines
29 Dec - 01 Jan	Vueling Airlines
19 Dec - 23 Dec	Vueling Airlines

Also check the deals for one-way flights from Bilbao to Bratislava 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 Bratislava in December from 106€

Return flights