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

Return flights

15 Aug - 22 Aug	Spirit Airlines
24 Aug - 27 Aug	Frontier Airlines
31 Aug - 05 Sep	Frontier Airlines
14 Aug - 21 Aug	Frontier Airlines
21 Aug - 03 Sep	Spirit Airlines
11 Aug - 13 Sep	Frontier Airlines
31 Aug - 07 Sep	Spirit Airlines
20 Aug - 03 Sep	United
19 Aug - 02 Sep	United	direct
21 Aug - 04 Sep	United	direct
31 Aug - 07 Sep	United	direct
31 Aug - 14 Sep	United	direct
29 Aug - 12 Sep	United
14 Aug - 21 Aug	United	direct
13 Aug - 27 Aug	United
14 Aug - 28 Aug	United
07 Aug - 21 Aug	United	direct
06 Aug - 20 Aug	United	direct
08 Aug - 22 Aug	United
17 Aug - 31 Aug	United

Also check the deals for one-way flights from Houston to Sao Paulo 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 Sao Paulo in August from $528

Return flights