Cheapest return flights from Bilbao to Porto in September from 43€

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

Return flights

28 Sep - 09 Oct Volotea direct
27 Sep - 09 Oct Vueling Airlines direct
07 Sep - 25 Sep Vueling Airlines direct
07 Sep - 11 Sep Vueling Airlines direct
25 Sep - 09 Oct Volotea direct
14 Sep - 25 Sep Volotea direct
28 Sep - 02 Oct Volotea direct
14 Sep - 02 Oct Volotea direct
07 Sep - 18 Sep Vueling Airlines direct
27 Sep - 02 Oct Vueling Airlines direct
14 Sep - 18 Sep Volotea direct
04 Sep - 11 Sep Volotea direct
21 Sep - 09 Oct Volotea direct
21 Sep - 25 Sep Volotea direct
04 Sep - 18 Sep Volotea direct
21 Sep - 02 Oct Volotea direct
26 Sep - 09 Oct Vueling Airlines direct
02 Sep - 11 Sep Vueling Airlines direct
13 Sep - 25 Sep Vueling Airlines direct
23 Sep - 09 Oct Vueling Airlines direct

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

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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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