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

Return flights

31 Dec - 27 Jan	United
01 Dec - 08 Dec	United
03 Dec - 10 Dec	United
04 Dec - 12 Dec	United
05 Dec - 12 Dec	Delta
28 Dec - 15 Jan	Delta
11 Dec - 27 Dec	Delta
18 Dec - 04 Jan	Allegiant Air
03 Dec - 27 Dec	United
10 Dec - 14 Dec	Air Canada
04 Dec - 28 Dec	Air Canada
27 Dec - 11 Jan	United
12 Dec - 21 Dec	Air Canada
27 Dec - 03 Jan	Porter Airlines (Canada) Ltd
12 Dec - 19 Dec	Air Canada
12 Dec - 02 Jan	LATAM Airlines Group
11 Dec - 05 Jan	Delta
17 Dec - 18 Jan	Air Canada
29 Dec - 05 Jan	United
16 Dec - 02 Jan	Air Canada

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.

Book a cheap hotel in Buenos Aires

Cheap car rent in Buenos Aires

Cheapest return flights from Newark to Buenos Aires in December from 789€

Return flights