AirHint found the following cheapest return flights from New York (NYC) to Buenos Aires (EZE) in September 2025 (see full year).

Return flights

12 Sep - 17 Sep	Spirit Airlines
12 Sep - 27 Sep	Spirit Airlines
12 Sep - 28 Sep	Spirit Airlines
12 Sep - 29 Sep	Spirit Airlines
05 Sep - 08 Sep	Spirit Airlines
08 Sep - 26 Sep	jetBlue
10 Sep - 21 Sep	Spirit Airlines
04 Sep - 11 Sep	Spirit Airlines
04 Sep - 12 Sep	Spirit Airlines
01 Sep - 10 Sep	Avianca
30 Sep - 15 Oct	Avianca
20 Sep - 04 Oct	Spirit Airlines
09 Sep - 19 Oct	Spirit Airlines
26 Sep - 11 Oct	Avianca
30 Sep - 22 Oct	Copa
15 Sep - 07 Oct	American Airlines	direct
26 Sep - 11 Oct	American Airlines	direct
22 Sep - 02 Oct	American Airlines	direct
20 Sep - 04 Oct	American Airlines	direct

Also check the deals for one-way flights from New York to Buenos Aires in September.

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 New York to Buenos Aires in September from $740

Return flights