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

Return flights

23 Oct - 03 Nov	Spirit Airlines
16 Oct - 21 Oct	Frontier Airlines
12 Oct - 29 Oct	Frontier Airlines
22 Oct - 02 Nov	Spirit Airlines
15 Oct - 20 Oct	Spirit Airlines
05 Oct - 07 Oct	Frontier Airlines
17 Oct - 21 Oct	Spirit Airlines
01 Oct - 03 Oct	Spirit Airlines
23 Oct - 30 Oct	GOL Linhas Aéreas
03 Oct - 05 Oct	Spirit Airlines
30 Oct - 05 Nov	Spirit Airlines
23 Oct - 31 Oct	GOL Linhas Aéreas
23 Oct - 27 Oct	GOL Linhas Aéreas

Also check the deals for one-way flights from Atlanta to Rio De Janeiro in October.

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 October from $649

Return flights