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

Return flights

12 Dec - 15 Jan	Arajet
12 Dec - 30 Dec	Arajet
29 Dec - 11 Jan	Arajet
04 Dec - 11 Dec	LATAM Airlines Group
26 Dec - 04 Jan	Arajet
10 Dec - 21 Dec	LATAM Airlines Group
10 Dec - 17 Dec	American Airlines
10 Dec - 18 Dec	American Airlines
28 Dec - 04 Jan	Sun Country Airlines
19 Dec - 26 Dec	Arajet
12 Dec - 02 Jan	Arajet
19 Dec - 06 Jan	Arajet
26 Dec - 01 Jan	Arajet
01 Dec - 10 Dec	Aeromexico
25 Dec - 05 Jan	Sun Country Airlines
18 Dec - 06 Jan	Arajet
19 Dec - 27 Dec	Arajet
23 Dec - 07 Jan	Porter Airlines (Canada) Ltd
22 Dec - 29 Dec	Arajet
19 Dec - 30 Dec	Arajet

Also check the deals for one-way flights from Newark 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 Newark to Buenos Aires in December from $887

Return flights