Many airlines offer flexible change policies
Sign up to receive text alerts about your trip
This weekend's flight prices found within the past 7 days, for the period specified. Prices and availability are subject to change. Additional terms apply.
Prices starting at $128 for return flights and $59 for one-way flights to Islip were the cheapest prices found within the past 7 days, for the period specified. Prices and availability are subject to change. Additional terms apply.
Origin Airport IATA Code
Destination Airport IATA Code
Direct Flight Airlines
|JAL, Etihad Airways, JetBlue Airways, Turkish Airlines, Delta Air Lines, Korean Air, TAP Air Portugal, Aeromexico, Singapore Airlines|
Earliest Flight Arrival
Latest Flight Arrival
For guaranteed low prices on flights from Portland to Islip, search no further than Orbitz. Planning the perfect trip is simple with Orbitz; our range of bargain holiday packages and cutting edge mobile tools makes it quick and easy.
Never miss out on bargain prices on Portland to Islip flights with free mobile apps for Android and iPhone. On the road? Not a problem – just use m.orbitz.com in your mobile browser to book flights from Portland to Islip or check the latest details of your flights.
With Orbitz’s Display Matrix, it is so easy to book your perfect vacation package. Just add in flights from Portland to Islip, decide if you want hotels and car rental included and click the button! Orbitz’s Display Matrix clearly shows all the deals and great savings available, including extra discounts, such as free nights.
Enjoy great deals on Portland to Islip flights and rack up those air miles at the same time! With Orbitz you just add in your frequent flyer number when asked and your qualifying miles are instant. Store your number to your account profile and next time you book your miles will be automatically added.
Feel confident when you book your Portland to Islip flights, a great hotel or a full vacation package that you are getting the best deal around. Orbitz’s low price guarantee assures you of peace of mind.
Fare, taxes & fees: Fares include all taxes and fees, except baggage fees. Rates shown reflect fares found by other Orbitz users over the past 7 days. Due to rapidly changing airline prices & seat availability, these fares may no longer be available.
Refunds/changes/cancellations: Itinerary changes, if permitted for the fare, will have a $30 service fee charged by Orbitz. Additional airline charges may apply.
Other conditions: Schedules, fares and rules are subject to change without notice. Seats are limited and may not be available on all flights/dates or in all markets. Lower fares may be available. Fares will not be honored retroactively or in exchange for any wholly/partially unused ticket. Tickets are non-transferable and non-refundable. Fare rules are provided for the selected itinerary before booking.