Cheapest return flights from Porto to Bilbao in December from 50€

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

Return flights

25 Dec - 08 Jan Volotea direct
18 Dec - 04 Jan Volotea direct
25 Dec - 01 Jan Volotea direct
25 Dec - 06 Jan Volotea direct
18 Dec - 13 Jan Volotea direct
14 Dec - 18 Dec Volotea direct
18 Dec - 08 Jan Volotea direct
14 Dec - 04 Jan Volotea direct
14 Dec - 16 Dec Volotea direct
18 Dec - 21 Dec Volotea direct
25 Dec - 15 Jan Volotea direct
18 Dec - 01 Jan Volotea direct
25 Dec - 28 Dec Volotea direct
18 Dec - 06 Jan Volotea direct
14 Dec - 21 Dec Volotea direct
18 Dec - 25 Dec Volotea direct
14 Dec - 25 Dec Volotea direct
13 Dec - 16 Dec Vueling Airlines direct
18 Dec - 28 Dec Volotea direct
13 Dec - 18 Dec Vueling Airlines direct

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

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