Cheapest one-way flights from Newark to Buenos Aires in September from $319

AirHint found the following cheapest one-way flights from Newark (EWR) to Buenos Aires (EZE) in September 2025 (see full year).

One-Way flights

28 Sep Spirit Airlines
27 Sep Frontier Airlines
22 Sep Spirit Airlines
14 Sep Spirit Airlines
17 Sep Spirit Airlines
15 Sep Frontier Airlines
10 Sep Spirit Airlines
21 Sep Spirit Airlines
13 Sep Frontier Airlines
09 Sep Frontier Airlines

Also check the deals for return flights from Newark to Buenos Aires in September.

Skyscanner

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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