Cheapest return flights from New York to San Juan in September from $147

AirHint found the following cheapest return flights from New York (JFK) to San Juan (SJU) in September 2025 (see full year).

Return flights

01 Sep - 05 Sep Frontier Airlines direct
14 Sep - 18 Sep Frontier Airlines direct
15 Sep - 19 Sep Frontier Airlines direct
23 Sep - 26 Sep Frontier Airlines direct
02 Sep - 11 Sep Frontier Airlines direct
02 Sep - 17 Sep Frontier Airlines direct
09 Sep - 16 Sep Frontier Airlines direct
06 Sep - 10 Sep Frontier Airlines
02 Sep - 13 Sep Frontier Airlines
20 Sep - 24 Sep Frontier Airlines

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

Skyscanner

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.

Book a cheap hotel in San Juan

Cheap car rent in San Juan

Feel free to contact us with any feedback or request another flight research.