Cheapest one-way flights from Newark to Buenos Aires in September from $341

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

One-Way flights

03 Sep Spirit Airlines
10 Sep Spirit Airlines
30 Sep Spirit Airlines
02 Sep Spirit Airlines
19 Sep Spirit Airlines
07 Sep jetBlue
09 Sep Spirit Airlines
04 Sep Spirit Airlines
29 Sep Spirit Airlines
16 Sep Air Canada

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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