Cheap Flights from Pittsburgh (AGC) to Islip (ISP)

Popular airlines from Pittsburgh, PA (AGC-Allegheny County) to MacArthur Airport (ISP)

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Flights from Pittsburgh (AGC) to Islip (ISP)
Origin airport
Allegheny County
Destination airport
MacArthur
Distance
359 mi

Pittsburgh to Islip Flights

The cheapest times to fly from Pittsburgh to Islip

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Pittsburgh to Islip are during the month of . You can find some of the cheapest flights from Pittsburgh to Islip with Expedia's search tool and vast selection of airlines.

The best time to book a flight from Pittsburgh to Islip

Sunday is one of the best days to book for cheap flights from Pittsburgh to Islip: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

How to find cheap round-trip tickets from Pittsburgh to Islip

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Pittsburgh to Islip in 2025. You can also book with separate airlines for your outbound and return journeys, from one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Pittsburgh to Islip flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

You could also save big by booking one of Expedia's vacation packages. Bundling together your Pittsburgh to Islip airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

*Terms apply.

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

Frequently asked questions

Is it cheaper to buy a plane ticket from Allegheny County Airport (AGC) to MacArthur Airport (ISP) last minute?
When it’s time to book your flights, being prepared pays off. While you may be able to find a last-minute deal on an Allegheny County Airport to MacArthur Airport (ISP) flight, prices usually don’t get cheaper as the date of departure nears. Based on flight pricing and demand studies in 2022, we have found that the sweet spot to lock in a domestic flight is between 28 – 35 days in advance. For international flights it’s three to four months.
What airports do you fly into for Islip from Pittsburgh?
MacArthur Airport (ISP), Tweed - New Haven Regional Airport (HVN) and Westchester County Airport (HPN) are your options when jetting from Pittsburgh to Islip. Roughly 7 mi northeast of central Islip, MacArthur Airport (ISP) is the city’s principal entry point. Think about things such as flight arrival and departure times and the distance to your hotel before settling on an airport. Touro College School of Health Sciences and Bayard Cutting Arboretum State Park are a couple of fantastic attractions to put on your must-see list when you get to your destination.
Can I change the date of my flight from Allegheny County Airport to MacArthur Airport?
It’s easy to make changes to your AGC to ISP journey yourself. Just log in to the Expedia Trips portal and hit “change flight.” Search for new flights and choose the one that works best with your plans. You’ll get an estimate of applicable flight change costs. You can also head to our Customer Service portal to chat to our Virtual Agent and quickly get answers to all your questions.

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