AirHint found the following cheapest return flights from New York (LGA) to Puerto Vallarta (PVR) in September 2025 (see full year).

Return flights

29 Sep - 03 Oct	Frontier Airlines
24 Sep - 29 Sep	Spirit Airlines
27 Sep - 30 Sep	Aeromexico
20 Sep - 28 Sep	Frontier Airlines
27 Sep - 04 Oct	Spirit Airlines
20 Sep - 22 Sep	Frontier Airlines
19 Sep - 22 Sep	Frontier Airlines
23 Sep - 30 Sep	Aeromexico
22 Sep - 29 Sep	Frontier Airlines
19 Sep - 21 Sep	Aeromexico

Also check the deals for one-way flights from New York to Puerto Vallarta 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 Puerto Vallarta in September from $464

Return flights