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

Return flights

08 Dec - 16 Dec	Spirit Airlines
08 Dec - 24 Dec	United
08 Dec - 15 Dec	United
04 Dec - 23 Dec	Delta
11 Dec - 15 Dec	Delta
10 Dec - 24 Dec	Delta
01 Dec - 09 Dec	Delta
04 Dec - 09 Dec	Delta
08 Dec - 18 Dec	Delta
08 Dec - 25 Dec	Delta
13 Dec - 10 Jan	Spirit Airlines
14 Dec - 15 Jan	Spirit Airlines
29 Dec - 12 Jan	Spirit Airlines
22 Dec - 30 Jan	Frontier Airlines
29 Dec - 11 Jan	Spirit Airlines
23 Dec - 13 Jan	Spirit Airlines
22 Dec - 09 Jan	Spirit Airlines
17 Dec - 12 Jan	Spirit Airlines
14 Dec - 20 Jan	Spirit Airlines
23 Dec - 10 Jan	Spirit 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 623€

Return flights