AirHint found the following cheapest return flights from New York (JFK) to Mexico City (MEX) in September 2025 (see full year).

Return flights

19 Sep - 22 Sep	Viva	direct
24 Sep - 30 Sep	Frontier Airlines
23 Sep - 30 Sep	Frontier Airlines
07 Sep - 22 Sep	Viva	direct
18 Sep - 30 Sep	Frontier Airlines
24 Sep - 30 Sep	Viva	direct
11 Sep - 22 Sep	Viva	direct
25 Sep - 01 Oct	Frontier Airlines
25 Sep - 30 Sep	Frontier Airlines
25 Sep - 29 Sep	Frontier Airlines
24 Sep - 29 Sep	Viva	direct
24 Sep - 21 Oct	Viva	direct
24 Sep - 07 Oct	Viva	direct
24 Sep - 03 Oct	Viva	direct
26 Sep - 03 Oct	Frontier Airlines
24 Sep - 08 Oct	Viva	direct
30 Sep - 04 Oct	Frontier Airlines
30 Sep - 21 Oct	Viva	direct
23 Sep - 06 Oct	Frontier Airlines
27 Sep - 04 Oct	Aeromexico

Also check the deals for one-way flights from New York to Mexico City 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 Mexico City in September from 306€

Return flights