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

Return flights

06 Dec - 13 Dec	Delta
02 Dec - 16 Dec	Delta
02 Dec - 29 Dec	United
01 Dec - 06 Dec	Air Canada
11 Dec - 14 Jan	United
06 Dec - 09 Jan	Delta
12 Dec - 14 Jan	LATAM Airlines Group
22 Dec - 29 Dec	Air Canada
15 Dec - 06 Jan	GOL Linhas Aéreas
11 Dec - 08 Jan	Air Canada
21 Dec - 29 Dec	Delta
22 Dec - 27 Dec	Air Canada
21 Dec - 27 Dec	Air Canada
25 Dec - 05 Jan	Air Canada
26 Dec - 05 Jan	Air Canada
28 Dec - 01 Jan	Air Canada
27 Dec - 04 Jan	Air Canada
20 Dec - 26 Dec	Air Canada
26 Dec - 02 Jan	Air Canada

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

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 December from 643€

Return flights