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

Return flights

12 Aug - 26 Aug	Spirit Airlines
21 Aug - 05 Sep	Spirit Airlines
18 Aug - 25 Aug	Spirit Airlines
31 Aug - 07 Sep	Spirit Airlines
15 Aug - 24 Aug	Spirit Airlines
29 Aug - 04 Sep	Spirit Airlines
21 Aug - 27 Aug	Spirit Airlines
14 Aug - 24 Aug	Spirit Airlines
14 Aug - 19 Aug	Spirit Airlines
24 Aug - 31 Aug	Turkish Airlines
21 Aug - 28 Aug	United
15 Aug - 22 Aug	United
17 Aug - 24 Aug	United
25 Aug - 01 Sep	United
27 Aug - 03 Sep	United

Also check the deals for one-way flights from Houston 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 Houston to Barcelona in August from $501

Return flights