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

Return flights

21 Aug - 11 Sep	Hawaiian Airlines
12 Aug - 18 Sep	Copa
14 Aug - 29 Aug	Copa
11 Aug - 19 Sep	Copa
07 Aug - 11 Aug	Delta
07 Aug - 18 Aug	United
21 Aug - 12 Sep	Delta
23 Aug - 20 Sep	Delta
13 Aug - 20 Sep	Delta
29 Aug - 01 Sep	Copa
13 Aug - 16 Aug	Frontier Airlines

Also check the deals for one-way flights from San Francisco 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 San Francisco to Sao Paulo in August from 514€

Return flights