AirHint found the following cheapest return flights from Newark (EWR) to Buenos Aires (EZE) in January 2026 (see full year).

Return flights

21 Jan - 26 Jan	United
21 Jan - 28 Jan	United
12 Jan - 27 Jan	United
27 Jan - 25 Feb	American Airlines
20 Jan - 11 Feb	American Airlines
05 Jan - 29 Jan	United
14 Jan - 29 Jan	American Airlines
23 Jan - 02 Feb	United
15 Jan - 26 Jan	United
24 Jan - 05 Feb	Spirit Airlines
14 Jan - 22 Jan	Frontier Airlines
30 Jan - 28 Feb	Arajet
05 Jan - 21 Jan	Spirit Airlines
06 Jan - 16 Jan	Spirit Airlines
08 Jan - 15 Jan	Spirit Airlines
31 Jan - 09 Feb	Spirit Airlines
31 Jan - 18 Feb	Spirit Airlines

Also check the deals for one-way flights from Newark to Buenos Aires in January.

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 January from $765

Return flights