Cheapest return flights from Bilbao to Porto in August from $84

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

Return flights

31 Aug - 16 Sep Vueling Airlines direct
31 Aug - 17 Sep Vueling Airlines
26 Aug - 09 Sep Vueling Airlines direct
31 Aug - 04 Sep Vueling Airlines direct
31 Aug - 11 Sep Vueling Airlines direct
26 Aug - 04 Sep Vueling Airlines direct
26 Aug - 11 Sep Vueling Airlines direct
31 Aug - 13 Sep Vueling Airlines direct
26 Aug - 13 Sep Vueling Airlines direct
31 Aug - 15 Sep Vueling Airlines
12 Aug - 21 Aug Vueling Airlines
03 Aug - 05 Aug Vueling Airlines direct
26 Aug - 29 Aug Vueling Airlines
26 Aug - 31 Aug Vueling Airlines
23 Aug - 26 Aug Air Europa
19 Aug - 26 Aug Air Europa
17 Aug - 26 Aug Air Europa
12 Aug - 24 Aug Vueling Airlines direct
12 Aug - 22 Aug Vueling Airlines direct
12 Aug - 15 Aug Vueling Airlines

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

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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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