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

Return flights

18 Sep - 21 Sep	Breeze Airways
19 Sep - 21 Sep	Breeze Airways
26 Sep - 28 Sep	Breeze Airways
12 Sep - 14 Sep	Breeze Airways
11 Sep - 18 Sep	Breeze Airways
02 Sep - 07 Sep	Breeze Airways
04 Sep - 11 Sep	Breeze Airways
04 Sep - 07 Sep	Breeze Airways
05 Sep - 07 Sep	Breeze Airways

Also check the deals for one-way flights from Newburgh to San Juan 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.

Book a cheap hotel in San Juan

Cheap car rent in San Juan

Cheapest return flights from Newburgh to San Juan in September from 513€

Return flights