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

Return flights

04 Dec - 11 Dec	Spirit Airlines
16 Dec - 23 Dec	Spirit Airlines
01 Dec - 08 Dec	Air Canada
09 Dec - 16 Jan	Spirit Airlines
17 Dec - 27 Dec	Spirit Airlines
12 Dec - 06 Jan	Arajet
11 Dec - 06 Jan	Spirit Airlines
17 Dec - 31 Dec	Spirit Airlines
02 Dec - 14 Dec	Spirit Airlines
13 Dec - 12 Jan	Spirit Airlines
12 Dec - 10 Jan	Arajet
15 Dec - 26 Dec	Spirit Airlines
25 Dec - 31 Dec	Porter Airlines (Canada) Ltd
22 Dec - 30 Dec	Air Canada
05 Dec - 20 Dec	Spirit Airlines
31 Dec - 10 Jan	Spirit Airlines
26 Dec - 16 Jan	Spirit Airlines
22 Dec - 06 Jan	Air Canada
17 Dec - 01 Jan	Spirit Airlines
30 Dec - 12 Jan	United

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 $868

Return flights