Cheapest return flights from Bilbao to Porto in September from $47

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

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

Return flights

23 Sep - 02 Oct Vueling Airlines direct
16 Sep - 20 Sep Vueling Airlines direct
02 Sep - 20 Sep Vueling Airlines direct
09 Sep - 20 Sep Vueling Airlines direct
23 Sep - 07 Oct Vueling Airlines direct
16 Sep - 02 Oct Vueling Airlines direct
23 Sep - 25 Sep Vueling Airlines direct
02 Sep - 09 Sep Vueling Airlines direct
21 Sep - 02 Oct Vueling Airlines direct
20 Sep - 02 Oct Vueling Airlines direct
16 Sep - 25 Sep Vueling Airlines direct
09 Sep - 25 Sep Vueling Airlines direct
21 Sep - 07 Oct Vueling Airlines direct
20 Sep - 07 Oct Vueling Airlines direct
18 Sep - 20 Sep Volotea direct
07 Sep - 20 Sep Volotea direct
16 Sep - 18 Sep Vueling Airlines direct
18 Sep - 02 Oct Volotea direct
25 Sep - 02 Oct Volotea direct
28 Sep - 02 Oct Volotea direct

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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