Cheapest return flights from Bilbao to Porto in September from 44€

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

Return flights

27 Sep - 11 Oct Vueling Airlines direct
27 Sep - 09 Oct Vueling Airlines direct
27 Sep - 16 Oct Vueling Airlines direct
28 Sep - 11 Oct Volotea direct
28 Sep - 09 Oct Volotea direct
28 Sep - 16 Oct Volotea direct
25 Sep - 11 Oct Volotea direct
30 Sep - 11 Oct Vueling Airlines direct
27 Sep - 07 Oct Vueling Airlines direct
25 Sep - 09 Oct Volotea direct
24 Sep - 25 Sep Air Europa
21 Sep - 25 Sep Air Europa
20 Sep - 25 Sep Air Europa
22 Sep - 25 Sep Air Europa
19 Sep - 25 Sep Air Europa
27 Sep - 27 Sep Vueling Airlines
22 Sep - 23 Sep Air Europa
20 Sep - 20 Sep Air Europa
24 Sep - 27 Sep Air Europa
22 Sep - 27 Sep Air Europa

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