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

Return flights

13 Dec - 16 Dec	Delta
09 Dec - 17 Dec	Frontier Airlines
10 Dec - 16 Dec	Frontier Airlines
08 Dec - 12 Dec	Avianca
10 Dec - 20 Jan	Frontier Airlines
06 Dec - 07 Dec	Avianca
10 Dec - 17 Dec	Frontier Airlines
08 Dec - 17 Dec	Avianca
08 Dec - 13 Dec	Avianca
10 Dec - 18 Dec	Frontier Airlines
12 Dec - 20 Dec	Delta
30 Dec - 24 Jan	Delta	direct
30 Dec - 20 Jan	Frontier Airlines
16 Dec - 20 Jan	Frontier Airlines
31 Dec - 11 Jan	Avianca
12 Dec - 14 Jan	Delta
18 Dec - 30 Jan	Frontier Airlines
30 Dec - 13 Jan	Frontier Airlines
30 Dec - 13 Jan	Delta	direct
12 Dec - 10 Jan	Frontier Airlines

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 690€

Return flights