To save up to 15% on this flight, we recommend booking at least 22 days prior to travel. The price may fluctuate and will likely increase closer to your departure date. Users on Cheapflights have found tickets from Islip to Ponce from $314 1-2 weeks out and tickets from $372 for flights departing within the next 72 hours.
The best pricing can be found in the month of March. Prices to Ponce from Islip average $340. You can even find prices in March for less than $340, as users have found deals to Ponce from as low as $224. The month of December appears to be one of the more expensive times to travel to Ponce from Islip. Flying in the targeted month can save you up to 69%.