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

Return flights

09 Sep - 18 Sep	Frontier Airlines
09 Sep - 19 Oct	Frontier Airlines
09 Sep - 17 Sep	Frontier Airlines
10 Sep - 22 Sep	jetBlue
30 Sep - 26 Oct	Avianca
09 Sep - 21 Sep	Frontier Airlines
25 Sep - 02 Oct	Frontier Airlines
24 Sep - 08 Oct	jetBlue
23 Sep - 26 Sep	jetBlue
24 Sep - 27 Sep	Avianca
10 Sep - 19 Sep	Avianca
10 Sep - 18 Sep	Avianca
15 Sep - 24 Sep	LATAM Airlines Group
26 Sep - 30 Sep	jetBlue
05 Sep - 01 Oct	Avianca
23 Sep - 07 Oct	Copa
12 Sep - 07 Oct	Frontier Airlines
30 Sep - 13 Oct	Avianca
21 Sep - 01 Oct	Frontier Airlines
24 Sep - 07 Oct	Avianca

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 $741

Return flights