Cheapest one-way flights from Porto to Bilbao in September from 21€

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

One-Way flights

18 Sep Vueling Airlines direct
25 Sep Volotea direct
19 Sep Vueling Airlines direct
09 Sep Vueling Airlines direct
11 Sep Volotea direct
04 Sep Volotea direct
16 Sep Vueling Airlines
27 Sep Vueling Airlines
10 Sep Ryanair
30 Sep Vueling Airlines

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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