Cheapest return flights from New York to San Juan in September from $105

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

Return flights

30 Sep - 04 Oct Frontier Airlines direct
29 Sep - 09 Oct Frontier Airlines direct
29 Sep - 02 Oct Frontier Airlines direct
25 Sep - 02 Oct Frontier Airlines direct
28 Sep - 02 Oct Frontier Airlines direct
28 Sep - 03 Oct Frontier Airlines direct
29 Sep - 04 Oct Frontier Airlines direct
28 Sep - 01 Oct Frontier Airlines direct
28 Sep - 04 Oct Frontier Airlines direct
25 Sep - 04 Oct Frontier Airlines direct
25 Sep - 26 Sep Frontier Airlines direct
29 Sep - 30 Sep Frontier Airlines direct
25 Sep - 30 Sep Frontier Airlines direct
28 Sep - 30 Sep Frontier Airlines direct
21 Sep - 25 Sep Frontier Airlines direct
23 Sep - 26 Sep Frontier Airlines direct
23 Sep - 30 Sep Frontier Airlines direct
23 Sep - 24 Sep Frontier Airlines direct
25 Sep - 27 Sep Frontier Airlines direct
27 Sep - 30 Sep Frontier Airlines direct

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

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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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