Cheapest return flights from New York to San Juan in September from $160

Best time to book flights for New York (NYC) to San Juan (SJU) flights at AirHint

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

Return flights

10 Sep - 13 Sep Frontier Airlines direct
09 Sep - 16 Sep Frontier Airlines direct
03 Sep - 06 Sep Frontier Airlines direct
11 Sep - 16 Sep Frontier Airlines direct
14 Sep - 23 Sep Frontier Airlines direct
03 Sep - 10 Sep Frontier Airlines direct
16 Sep - 30 Sep Frontier Airlines direct
04 Sep - 09 Sep Frontier Airlines direct
19 Sep - 22 Sep Frontier Airlines direct
06 Sep - 11 Sep Frontier Airlines direct
24 Sep - 15 Oct Frontier Airlines direct
27 Sep - 15 Oct Frontier Airlines direct

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.

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