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

Return flights

26 Aug - 02 Sep	easyJet
31 Aug - 08 Sep	easyJet
28 Aug - 02 Sep	easyJet
31 Aug - 03 Sep	easyJet
26 Aug - 02 Sep	easyJet	direct
28 Aug - 02 Sep	easyJet	direct
02 Aug - 05 Aug	Ryanair
24 Aug - 28 Aug	easyJet
05 Aug - 14 Aug	easyJet	direct
28 Aug - 28 Aug	easyJet
17 Aug - 21 Aug	easyJet	direct
12 Aug - 14 Aug	easyJet	direct
05 Aug - 07 Aug	easyJet	direct
05 Aug - 12 Aug	easyJet	direct
03 Aug - 05 Aug	easyJet	direct
10 Aug - 13 Aug	easyJet
28 Aug - 01 Sep	easyJet
30 Aug - 06 Sep	Ryanair
25 Aug - 01 Sep	Ryanair
29 Aug - 01 Sep	easyJet

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

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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Cheapest return flights from Bristol to Bilbao in August from $138

Return flights