Cheapest return flights from Bilbao to Bucharest in December from $136

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

Return flights

11 Dec - 15 Dec Vueling Airlines
02 Dec - 07 Dec Vueling Airlines
02 Dec - 05 Dec Volotea
07 Dec - 10 Dec Vueling Airlines
07 Dec - 14 Dec Vueling Airlines
09 Dec - 14 Dec Vueling Airlines
07 Dec - 11 Dec Vueling Airlines
06 Dec - 10 Dec Vueling Airlines
10 Dec - 17 Dec Vueling Airlines
06 Dec - 14 Dec Vueling Airlines
29 Dec - 01 Jan Vueling Airlines
29 Dec - 02 Jan Vueling Airlines
22 Dec - 02 Jan Vueling Airlines
23 Dec - 02 Jan Vueling Airlines
27 Dec - 04 Jan Air Europa
26 Dec - 05 Jan Vueling Airlines
27 Dec - 03 Jan Volotea
26 Dec - 04 Jan Vueling Airlines
27 Dec - 02 Jan Vueling Airlines

Also check the deals for one-way flights from Bilbao to Bucharest in December.

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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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