Cheap Flights from Islip to Ponce from US$171

Frequently Asked Questions

• What are the cheapest flights from Islip to Ponce (ISP-PSE)?

  Based on Trip.com data, Frontier Airlines offers one-way fares as low as US$171 on Cheapest nonstop routes (e.g. ISP to PSE on Thu, Jan 15), while Jetblue Airways offers Cheapest nonstop round-trips from US$648 departing on Thu, Dec 11 and returning on Sun, Dec 14.

• When is the best time to book flights from Islip to Ponce?

  By analyzing data from all airlines on the Trip.com flight calendar, it looks like the best time to book a flight from Islip to Ponce is around 40 days (6 weeks) in advance, and the best time to fly is usually on Tuesday, Wednesday, and Saturday. Tuesday typically offers the cheapest flights for departure, while Saturday offers the best return deals.

• How can I find the best deals on flights from Islip to Ponce?

  To find best deals on flights from Islip to Ponce, you can use various tools on Trip.com:
  · Be flexible with your travel dates to get the cheapest flight deal. Now the cheapest flight deal is on Thu, Jan 15, with one-way flights priced at just US$171.
  · Compare airlines strategically. Budget carriers often provide the lowest base fares, while we found the most affordable airline currently operating on this route is Frontier Airlines.
  · Set up price alerts to easily monitor ticket prices without having to check every day.
  · Check Trip.com flight deals and promo codes frequently.
  · Avoid peak season unless you book very early. It seems the peak season for Ponce travel is around April.
  · Get exclusive promo codes for Trip.com app users.

• When are flight tickets from Islip (ISP) to Ponce (PSE) the cheapest?

  The cheapest months to fly from Islip to Ponce is April, when demand for travel is lower.

• Which upcoming date is cheapest to fly from Islip to Ponce on?

  After crunching the numbers on our December flight calendar, it's currently cheapest to fly from Islip to Ponce on December 11, 2025 with Jetblue Airways, with prices starting at US$647.

• Is there any time difference between Islip and Ponce?

  The time difference between Ponce and Islip is 1h.

• How do I change or cancel my ticket from Islip to Ponce?

  Tickets can only be changed or canceled if permitted by airline policy. To submit a change or cancellation request, go to the flight bookings page, select the option to change or cancel your booking, choose the relevant passengers and segment, and submit a request. Please note that additional charges may apply according to the airline ticket policy. However, if the flight has been rescheduled and you would like to change or cancel your ticket, you can submit an involuntary cancellation request. For more details about change and cancellation policies, please check the customer support pages.