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

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

Return flights

25 Sep - 27 Sep Volotea direct
25 Sep - 28 Sep Volotea direct
04 Sep - 14 Sep Volotea direct
04 Sep - 25 Sep Volotea direct
25 Sep - 02 Oct Volotea direct
25 Sep - 04 Oct Volotea direct
25 Sep - 07 Oct Volotea direct
11 Sep - 27 Sep Volotea direct
11 Sep - 28 Sep Volotea direct
11 Sep - 14 Sep Volotea direct
11 Sep - 25 Sep Volotea direct
11 Sep - 02 Oct Volotea direct
04 Sep - 20 Sep Volotea direct
25 Sep - 12 Oct Volotea direct
25 Sep - 09 Oct Volotea direct
19 Sep - 27 Sep Vueling Airlines direct
19 Sep - 02 Oct Vueling Airlines direct
18 Sep - 02 Oct Volotea direct
16 Sep - 02 Oct Vueling Airlines direct
19 Sep - 04 Oct Vueling Airlines direct

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