$43 Cheap Frontier Airlines flights West Palm Beach (PBI) to Islip (ISP)

You’ll find budget-friendly return Frontier Airlines flights from $86 from PBI to ISP by filtering your results from “Price (lowest to highest)” on Expedia. Or look for bargains from $43 for a one-way journey.**These prices were available on Expedia within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.

Search for one-way or round-trip flights to Islip in January or February. You could find lower fares with Frontier Airlines during these off-peak travel months.

Begin your search one to three months before your departure to find cheaper fares on Frontier Airlines flights from Palm Beach Intl. Airport (PBI) to MacArthur Airport (ISP). You can save 25% by booking your domestic flight 34 to 86 days in advance versus last-minute reservations made 6 to 12 days out. You could also cut costs by buying your fare on a Sunday, as it’s 6% cheaper on average than a Monday, the most expensive day to book.* Get your timing spot on, and you can enjoy significant savings on domestic journeys.*Ideal booking window recommendation is based on average round-trip ticket prices for January through November for 2024. Best day of the week to book recommendation is based on average round-trip ticket prices for January through October 2024. All data sourced from ARC’s global airline sales database.

Take off on one of Frontier Airlines’s 7 direct weekly flights from Palm Beach Intl. Airport (PBI) to MacArthur Airport (ISP). To see your options, enter your dates, destination and origin and hit search. Then apply the “Nonstop” and “Airline” filters.

Take off from Palm Beach Intl. Airport (PBI) for MacArthur Airport (ISP) on a direct Frontier Airlines flight, and you’ll be in the air for approximately 2h 47m.

Taking off from PBI at 8:03PM UTC-5, the first Frontier Airlines flight to ISP arrives at 10:50PM UTC-5. Traveling earlier in the day means you’re less likely to experience cancellations.* Don’t like early starts? The last Frontier Airlines flight from PBI to ISP departs at 8:03PM UTC-5 and touches down at 10:50PM UTC-5.*Most reliable time of the day recommendation is based on January through August 2024 flight status data sourced from OAG’s global flight data platform.

Frontier Airlines flights from Palm Beach Intl. Airport (PBI) to Islip touch down at MacArthur Airport (ISP), LaGuardia Airport (LGA) and John F. Kennedy Intl. Airport (JFK). The primary Islip hub served by this carrier is ISP. It’s worth checking out flights landing at other nearby airports on Expedia as they may offer lower prices.

Travel from PBI to ISP with Frontier Airlines and enjoy a range of perks starting with a rewarding loyalty program. When booking through Expedia as a Frontier Miles and One Key™ member, you may also earn OneKeyCash™* to redeem on select future travel purchases.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.

Frontier Airlines typically flies Airbus A321neo planes for flights from Palm Beach Intl. Airport (PBI) to MacArthur Airport (ISP). This airline also operates the Airbus A320neo on this route. Remember that aircraft type can change depending on operational reasons, so the plane you board might be different on the day.

Changes are often free within 24 hours of making a booking, but your airline may charge you after that. For further information about modifying your flights, check out your “Trips,” select your flight and click on “Manage Booking.” If you want the freedom to adjust your plans without extra charges, check the “Changes included” and “No cancel fee” filters when organizing your next escape.