Cheapest return flights from Bilbao to Porto in December from 35€

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

Return flights

18 Dec - 25 Dec Vueling Airlines direct
11 Dec - 25 Dec Volotea direct
09 Dec - 25 Dec Vueling Airlines direct
16 Dec - 18 Dec Vueling Airlines direct
25 Dec - 13 Jan Volotea direct
04 Dec - 11 Dec Volotea direct
09 Dec - 13 Dec Vueling Airlines direct
13 Dec - 25 Dec Vueling Airlines direct
14 Dec - 18 Dec Volotea direct
04 Dec - 13 Dec Volotea direct
04 Dec - 18 Dec Volotea direct
25 Dec - 08 Jan Volotea direct
25 Dec - 10 Jan Volotea direct
27 Dec - 13 Jan Vueling Airlines direct
27 Dec - 08 Jan Vueling Airlines direct
21 Dec - 08 Jan Volotea direct
27 Dec - 10 Jan Vueling Airlines direct
21 Dec - 10 Jan Volotea direct
27 Dec - 15 Jan Vueling Airlines direct
18 Dec - 01 Jan Vueling Airlines direct

Also check the deals for one-way flights from Bilbao to Porto 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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