Cheapest one-way flights from Porto to Bilbao in September from 33€

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
11 Sep Volotea direct
17 Sep Vueling Airlines
25 Sep Volotea direct
20 Sep Vueling Airlines direct
29 Sep Vueling Airlines
15 Sep Air Europa
21 Sep Air Europa
19 Sep Air Europa
22 Sep Air Europa

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.

Book a cheap hotel in Bilbao

Cheap car rent in Bilbao