AirHint found the following cheapest return flights from Atlanta (ATL) to Rio De Janeiro (SDU) in December 2025 (see full year).

Return flights

09 Dec - 18 Dec	Spirit Airlines
24 Dec - 06 Jan	Frontier Airlines
16 Dec - 31 Dec	Frontier Airlines
30 Dec - 07 Jan	Frontier Airlines
13 Dec - 10 Jan	Frontier Airlines
16 Dec - 26 Dec	Frontier Airlines
13 Dec - 12 Jan	Frontier Airlines
30 Dec - 03 Jan	Frontier Airlines
16 Dec - 04 Jan	Frontier Airlines
19 Dec - 30 Dec	Frontier Airlines
21 Dec - 24 Dec	Spirit Airlines
18 Dec - 03 Jan	Frontier Airlines
26 Dec - 02 Jan	Frontier Airlines
15 Dec - 05 Jan	Frontier Airlines
30 Dec - 04 Jan	Frontier Airlines
17 Dec - 26 Dec	GOL Linhas Aéreas
02 Dec - 07 Dec	GOL Linhas Aéreas
01 Dec - 07 Dec	LATAM Airlines Group

Also check the deals for one-way flights from Atlanta to Rio De Janeiro 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 Atlanta to Rio De Janeiro in December from $895

Return flights