AirHint found the following cheapest return flights from New York (NYC) to Buenos Aires (AEP) in December 2025 (see full year).

Return flights

04 Dec - 12 Dec	Avianca
08 Dec - 15 Dec	Avianca
05 Dec - 14 Dec	Avianca
01 Dec - 31 Dec	Avianca
12 Dec - 28 Dec	Avianca
08 Dec - 22 Dec	Avianca
09 Dec - 26 Dec	Avianca
11 Dec - 31 Dec	Frontier Airlines
24 Dec - 15 Jan	LATAM Airlines Group
12 Dec - 27 Dec	Avianca
15 Dec - 30 Dec	LATAM Airlines Group
14 Dec - 11 Jan	Frontier Airlines
11 Dec - 05 Jan	LATAM Airlines Group
24 Dec - 05 Jan	LATAM Airlines Group
12 Dec - 03 Jan	Avianca
18 Dec - 21 Jan	LATAM Airlines Group
26 Dec - 02 Jan	Avianca
12 Dec - 02 Jan	Avianca
29 Dec - 04 Jan	LATAM Airlines Group
22 Dec - 01 Jan	LATAM Airlines Group

Also check the deals for one-way flights from New York 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 New York to Buenos Aires in December from $820

Return flights