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Cheap Flights from Philadelphia to Islip Prices were available within the past 7 days and starts at 91 for one-way flights and for round trip, for the period specified.

Prices and availability are subject to. Search flights from Philadelphia Intl. (PHL) to MacArthur (ISP) starting at As COVID disrupts travel, a few airlines are offering WAIVING CHANGE FEE for new bookings.

Find flights to Islip from Fly from Philadelphia on Frontier, American Airlines, Linear Air Taxi and more. Search for Islip flights on KAYAK now to find the best deal. The flight between Philadelphia (PHL) and Islip (ISP) typically takes about 1 hour and 6 minutes. How many flights per day are there on this route? There are 3 direct flights every day.

What are the flight numbers on the route Philadelphia (PHL) to Islip (ISP)?