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

Return flights

30 Jan - 23 Feb	Frontier Airlines
16 Jan - 26 Jan	Frontier Airlines
29 Jan - 20 Feb	Copa
29 Jan - 23 Feb	Frontier Airlines
30 Jan - 21 Feb	Frontier Airlines
28 Jan - 23 Feb	Copa
29 Jan - 21 Feb	Copa
24 Jan - 20 Feb	Copa
24 Jan - 23 Feb	Copa
09 Jan - 19 Jan	Frontier Airlines
21 Jan - 01 Feb	United	direct
23 Jan - 01 Feb	United	direct
07 Jan - 16 Jan	LATAM Airlines Group
07 Jan - 13 Jan	Avianca
03 Jan - 05 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 569€

Return flights