AirHint found the following cheapest return flights from Atlanta (ATL) to Buenos Aires (EZE) in December 2025 (see full year).

Return flights

10 Dec - 12 Jan	Spirit Airlines
26 Dec - 08 Jan	Frontier Airlines
05 Dec - 20 Dec	Frontier Airlines
05 Dec - 22 Dec	Spirit Airlines
22 Dec - 13 Jan	Spirit Airlines
20 Dec - 01 Jan	Frontier Airlines
05 Dec - 13 Dec	Delta
29 Dec - 09 Jan	Delta	direct
13 Dec - 09 Jan	Delta
26 Dec - 08 Jan	Delta	direct
27 Dec - 01 Jan	Delta	direct
26 Dec - 01 Jan	Delta	direct
27 Dec - 03 Jan	Delta	direct

Also check the deals for one-way flights from Atlanta to Buenos Aires 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 Buenos Aires in December from $837

Return flights