Cheapest one-way flights from Porto to Bilbao in September from $37

Best time to book flights for Porto (OPO) to Bilbao (BIO) flights at AirHint

AirHint found the following cheapest one-way flights from Porto (OPO) to Bilbao (BIO) in September 2025 (see full year).

One-Way flights

04 Sep Volotea direct
09 Sep Vueling Airlines direct
16 Sep Vueling Airlines direct
30 Sep Vueling Airlines direct
11 Sep Volotea direct
25 Sep Volotea direct
20 Sep Vueling Airlines direct
17 Sep Vueling Airlines
27 Sep Vueling Airlines direct
13 Sep Vueling Airlines direct

Also check the deals for return flights from Porto to Bilbao in September.

Skyscanner

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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