AirHint found the following cheapest return flights from Washington (IAD) to Sao Paulo (GRU) in July 2025 (see full year).

Return flights

27 Jul - 03 Aug	Avianca
16 Jul - 08 Aug	Avianca
27 Jul - 30 Jul	Avianca
27 Jul - 06 Aug	Avianca
27 Jul - 07 Aug	Avianca
27 Jul - 08 Aug	Avianca
20 Jul - 03 Aug	Copa
20 Jul - 27 Jul	Copa
21 Jul - 28 Jul	Copa
19 Jul - 26 Jul	Copa
28 Jul - 29 Aug	Frontier Airlines
24 Jul - 27 Jul	Copa
24 Jul - 14 Aug	Avianca
28 Jul - 31 Jul	Avianca
31 Jul - 06 Aug	Avianca
29 Jul - 12 Aug	United
21 Jul - 28 Jul	United	direct
27 Jul - 30 Jul	United	direct
24 Jul - 27 Jul	United	direct
20 Jul - 27 Jul	United	direct

Also check the deals for one-way flights from Washington to Sao Paulo in July.

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 Washington to Sao Paulo in July from $661

Return flights