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

Return flights

24 Sep - 01 Oct	Frontier Airlines
09 Sep - 30 Sep	Viva	direct
25 Sep - 30 Sep	Viva	direct
24 Sep - 30 Sep	Viva	direct
12 Sep - 30 Sep	Viva	direct
26 Sep - 28 Sep	Frontier Airlines
03 Sep - 11 Oct	Frontier Airlines
07 Sep - 15 Sep	Avianca
05 Sep - 08 Sep	Frontier Airlines
08 Sep - 15 Sep	Avianca
11 Sep - 30 Sep	Viva	direct
13 Sep - 30 Sep	Viva	direct
30 Sep - 16 Oct	Frontier Airlines
30 Sep - 20 Oct	Avianca
30 Sep - 21 Oct	Avianca
23 Sep - 14 Oct	Avianca
09 Sep - 01 Oct	Avianca
16 Sep - 07 Oct	Avianca
24 Sep - 01 Oct	American Airlines	direct
30 Sep - 16 Oct	American Airlines	direct

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 $334

Return flights