AirHint found the following cheapest return flights from Austin (AUS) to Barcelona (BCN) in August 2025 (see full year).

Return flights

19 Aug - 19 Sep	Air Canada
10 Aug - 26 Aug	Air Canada
19 Aug - 29 Aug	Air Canada
18 Aug - 28 Aug	United
12 Aug - 19 Aug	United
18 Aug - 25 Aug	Air Canada
20 Aug - 27 Aug	Air Canada
12 Aug - 25 Aug	Air Canada
10 Aug - 18 Aug	British Airways
14 Aug - 21 Aug	United
15 Aug - 22 Aug	United
25 Aug - 01 Sep	Air Canada
31 Aug - 07 Sep	Air Canada
27 Aug - 03 Sep	Spirit Airlines
30 Aug - 06 Sep	jetBlue
26 Aug - 02 Sep	Spirit Airlines
28 Aug - 04 Sep	Lufthansa
29 Aug - 05 Sep	Iberia

Also check the deals for one-way flights from Austin to Barcelona 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 Austin to Barcelona in August from $472

Return flights