Cheapest return flights from Porto to Bilbao in August from $77

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

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

Return flights

05 Aug - 17 Aug Vueling Airlines direct
12 Aug - 31 Aug Vueling Airlines direct
10 Aug - 31 Aug Vueling Airlines direct
03 Aug - 17 Aug Vueling Airlines direct
12 Aug - 17 Aug Vueling Airlines direct
10 Aug - 17 Aug Vueling Airlines direct
24 Aug - 31 Aug Vueling Airlines direct
05 Aug - 15 Aug Vueling Airlines direct
12 Aug - 02 Sep Vueling Airlines direct
24 Aug - 07 Sep Vueling Airlines direct
24 Aug - 14 Sep Vueling Airlines direct
24 Aug - 11 Sep Vueling Airlines direct
24 Aug - 04 Sep Vueling Airlines direct
19 Aug - 24 Aug Vueling Airlines direct
19 Aug - 31 Aug Vueling Airlines direct
19 Aug - 07 Sep Vueling Airlines direct
19 Aug - 04 Sep Vueling Airlines direct
29 Aug - 07 Sep Vueling Airlines direct
29 Aug - 14 Sep Vueling Airlines direct
29 Aug - 11 Sep Vueling Airlines direct

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

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.

Book a cheap hotel in Bilbao

Cheap car rent in Bilbao