Cheapest return flights from Porto to Bilbao in September from $60

AirHint found the following cheapest return flights from Porto (OPO) to Bilbao (BIO) in September 2026 (see full year).

Return flights

22 Sep - 13 Oct Vueling Airlines direct
22 Sep - 27 Sep Vueling Airlines direct
13 Sep - 27 Sep Vueling Airlines direct
05 Sep - 11 Sep Vueling Airlines direct
07 Sep - 11 Sep Vueling Airlines direct
07 Sep - 27 Sep Vueling Airlines direct
22 Sep - 05 Oct Vueling Airlines
10 Sep - 11 Sep Volotea direct
10 Sep - 27 Sep Volotea direct
06 Sep - 11 Sep Vueling Airlines direct
13 Sep - 18 Sep Vueling Airlines
06 Sep - 27 Sep Vueling Airlines direct

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

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