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

Return flights

19 Jan - 01 Feb	Frontier Airlines
20 Jan - 17 Feb	Air Canada
20 Jan - 06 Feb	Avianca
25 Jan - 31 Jan	Avianca
21 Jan - 01 Feb	United	direct
28 Jan - 25 Feb	United	direct
21 Jan - 02 Feb	United	direct
23 Jan - 01 Feb	United
16 Jan - 26 Jan	Frontier Airlines
15 Jan - 20 Jan	Air Canada
09 Jan - 19 Jan	Frontier Airlines
14 Jan - 01 Feb	United
14 Jan - 31 Jan	United
09 Jan - 19 Jan	United	direct
09 Jan - 17 Jan	United
25 Jan - 31 Jan	United	direct
15 Jan - 20 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 463€

Return flights