AirHint found the following cheapest return flights from San Francisco (SFO) to Buenos Aires (EZE) in August 2025 (see full year).

Return flights

15 Aug - 26 Aug	Hawaiian Airlines
21 Aug - 03 Sep	Hawaiian Airlines
24 Aug - 05 Sep	Frontier Airlines
17 Aug - 24 Aug	Frontier Airlines
10 Aug - 14 Aug	Avianca
12 Aug - 14 Aug	Avianca
14 Aug - 22 Sep	Copa
15 Aug - 17 Aug	Copa

Also check the deals for one-way flights from San Francisco to Buenos Aires 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 Buenos Aires in August from 742€

Return flights