Cheapest return flights from Bilbao to Porto in December from 90€

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

Return flights

28 Dec - 15 Jan Volotea direct
25 Dec - 10 Jan Vueling Airlines direct
25 Dec - 13 Jan Vueling Airlines direct
28 Dec - 10 Jan Volotea direct
28 Dec - 17 Jan Volotea direct
27 Dec - 15 Jan Vueling Airlines direct
28 Dec - 13 Jan Volotea direct
28 Dec - 08 Jan Volotea direct
25 Dec - 01 Jan Vueling Airlines direct
27 Dec - 01 Jan Vueling Airlines direct
25 Dec - 27 Dec Vueling Airlines direct
25 Dec - 28 Dec Vueling Airlines direct
29 Dec - 31 Dec Iberia
25 Dec - 25 Dec TAP
27 Dec - 28 Dec Vueling Airlines direct
27 Dec - 31 Dec Vueling Airlines
28 Dec - 31 Dec Volotea
25 Dec - 29 Dec Vueling Airlines
25 Dec - 30 Dec Vueling Airlines
25 Dec - 30 Dec Vueling Airlines direct

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

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