AirHint found the following cheapest return flights from Washington (IAD) to Sao Paulo (GRU) in January 2026 (see full year).

Return flights

22 Jan - 26 Jan	Air Canada
14 Jan - 31 Jan	Avianca
16 Jan - 08 Feb	Frontier Airlines
16 Jan - 26 Jan	Frontier Airlines
08 Jan - 18 Jan	Avianca
21 Jan - 02 Feb	United	direct
21 Jan - 01 Feb	United	direct
28 Jan - 25 Feb	United	direct
23 Jan - 01 Feb	United
14 Jan - 31 Jan	United	direct
10 Jan - 17 Jan	Avianca
09 Jan - 19 Jan	Avianca
09 Jan - 19 Jan	United	direct
08 Jan - 18 Jan	United	direct
22 Jan - 26 Jan	United	direct

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

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 January from $545

Return flights