$89 Cheap Flights from Islip (ISP) to Pittsburgh (PIT)

View $89 flight on Thu, Oct 23, 2025Opens in a new window

Popular airlines from MacArthur Airport (ISP) to Pittsburgh Intl. Airport (PIT)

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Cheap Flights from Islip to Pittsburgh (ISP-PIT)

Prices were available within the past 7 days and start at $89 for one-way flights and $166 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Frontier Airlines
Thu, Oct 30 - Sun, Nov 2
ISP
Islip
PIT
Pittsburgh
$166 Roundtrip, found 2 days ago
$166
Roundtrip
found 2 days ago
Select Frontier Airlines flight, departing Thu, Oct 30 from Islip to Pittsburgh, returning Sun, Nov 2, priced at $166 found 2 days ago
Frontier Airlines
Thu, Oct 23 - Sun, Nov 2
ISP
Islip
PIT
Pittsburgh
$180 Roundtrip, found 1 day ago
$180
Roundtrip
found 1 day ago
Select Frontier Airlines flight, departing Thu, Oct 23 from Islip to Pittsburgh, returning Sun, Nov 2, priced at $180 found 1 day ago
Southwest Airlines
Mon, Nov 10 - Wed, Nov 12
ISP
Islip
PIT
Pittsburgh
$185 Roundtrip, found 2 days ago
$185
Roundtrip
found 2 days ago
Select Southwest Airlines flight, departing Mon, Nov 10 from Islip to Pittsburgh, returning Wed, Nov 12, priced at $185 found 2 days ago
Southwest Airlines
Mon, Nov 10 - Wed, Nov 12
ISP
Islip
PIT
Pittsburgh
$190 Roundtrip, found 2 days ago
$190
Roundtrip
found 2 days ago
Select Southwest Airlines flight, departing Mon, Nov 10 from Islip to Pittsburgh, returning Wed, Nov 12, priced at $190 found 2 days ago
Frontier Airlines
Thu, Oct 23 - Sun, Oct 26
ISP
Islip
PIT
Pittsburgh
$194 Roundtrip, found 1 day ago
$194
Roundtrip
found 1 day ago
Select Frontier Airlines flight, departing Thu, Oct 23 from Islip to Pittsburgh, returning Sun, Oct 26, priced at $194 found 1 day ago
Southwest Airlines
Sat, Dec 13 - Tue, Dec 16
ISP
Islip
PIT
Pittsburgh
$200 Roundtrip, found 7 hours ago
$200
Roundtrip
found 7 hours ago
Select Southwest Airlines flight, departing Sat, Dec 13 from Islip to Pittsburgh, returning Tue, Dec 16, priced at $200 found 7 hours ago
Frontier Airlines
Thu, Nov 13 - Sun, Nov 16
ISP
Islip
PIT
Pittsburgh
$202 Roundtrip, found 2 days ago
$202
Roundtrip
found 2 days ago
Select Frontier Airlines flight, departing Thu, Nov 13 from Islip to Pittsburgh, returning Sun, Nov 16, priced at $202 found 2 days ago
Southwest Airlines
Sat, Dec 13 - Tue, Dec 16
ISP
Islip
PIT
Pittsburgh
$204 Roundtrip, found 7 hours ago
$204
Roundtrip
found 7 hours ago
Select Southwest Airlines flight, departing Sat, Dec 13 from Islip to Pittsburgh, returning Tue, Dec 16, priced at $204 found 7 hours ago
JetBlue Airways
Mon, Nov 10 - Wed, Nov 12
ISP
Islip
PIT
Pittsburgh
$204 Roundtrip, found 2 days ago
$204
Roundtrip
found 2 days ago
Select JetBlue Airways flight, departing Mon, Nov 10 from Islip to Pittsburgh, returning Wed, Nov 12, priced at $204 found 2 days ago
Breeze Airways
Fri, Jan 23 - Fri, Feb 6
ISP
Islip
PIT
Pittsburgh
$429 Roundtrip, found 3 days ago
$429
Roundtrip
found 3 days ago
Select Breeze Airways flight, departing Fri, Jan 23 from Islip to Pittsburgh, returning Fri, Feb 6, priced at $429 found 3 days ago
Flights from Islip (ISP) to Pittsburgh (PIT)
Origin airport
MacArthur
Destination airport
Pittsburgh Intl.
Airlines serving
Breeze Airways, Frontier Airlines, JetBlue Airways, Southwest Airlines
Roundtrip price
$166
Distance
375 mi

Islip to Pittsburgh Flights

The cheapest times to fly from Islip to Pittsburgh

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 Islip to Pittsburgh are during the month of October. You can find some of the cheapest flights from Islip to Pittsburgh with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Islip to Pittsburgh

Sunday is one of the best days to book for cheap flights from Islip to Pittsburgh: 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 Islip to Pittsburgh

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 Islip to Pittsburgh in 2025. You can also book with separate airlines for your outbound and return journeys, from $89 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 Islip to Pittsburgh 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 Islip to Pittsburgh 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

How much does a flight from MacArthur Airport (ISP) to Pittsburgh Intl. Airport (PIT) cost?
Grab a cheap one-way flight from $89 or cheap return flight from $166 from MacArthur Airport (ISP) to Pittsburgh Intl. Airport (PIT) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight offers on this route.
What is the cheapest month to fly from MacArthur Airport (ISP) to Pittsburgh Intl. Airport (PIT)?
Traveling in October may help you find better deals, as it's the cheapest month for flights between ISP and PIT. You'll often find the lowest prices during off-peak months.
Which airlines fly direct from MacArthur Airport (ISP) to Pittsburgh Intl. Airport (PIT)?
You can't fly directly from Islip, NY (ISP-MacArthur) to Pittsburgh Intl. Airport (PIT). However, you'll find other airports with nonstop flights. Start your journey at John F. Kennedy Intl. Airport (JFK) and head straight to Pittsburgh without layovers.
What is the cheapest airline that flies from MacArthur Airport (ISP) to Pittsburgh Intl. Airport (PIT)?
Expedia's filter tool lets you easily compare different airlines, travel time and fares all in one place. Select your preferences, then sort by "Price (lowest to highest)" to find out which carrier offers the cheapest ISP to PIT flight.
How many flights per day from MacArthur Airport (ISP) to Pittsburgh Intl. Airport (PIT)?
There are no daily direct flights available from MacArthur Airport (ISP) to Pittsburgh Intl. Airport (PIT). But you can book flights with layovers. Filter your search on Expedia to include one or more stops, and you'll be cruising above the clouds in no time.
What day of the week has the most flights from ISP to PIT?
You'll usually find Tuesday the quietest day for flights, while Fridays are often the busiest.* However this can change from season to season and during public holidays or peak travel times.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from MacArthur Airport (ISP) to Pittsburgh Intl. Airport (PIT)?
Opt for a flight from MacArthur Airport (ISP) to Pittsburgh Intl. Airport (PIT) that takes off before 3 PM to reduce the likelihood of delays. Departures after this hour are on average 22% more likely to be canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from MacArthur Airport (ISP) to Pittsburgh Intl. Airport (PIT) last-minute?
Last-minute bookings from ISP to PIT are generally more expensive. To secure the lowest rates, start searching for flights early. That said, if you're flexible with your travel dates, it's possible to land a cheap ticket right before you leave.
Is it cheaper to book an ISP to PIT flight and hotel package?
Compared with arranging hotels and flights separately, booking an ISP to PIT flight and hotel package with Expedia could result in significant savings. Better still, having it all in one place will take the hassle out of planning your trip. Just secure your flights and select from our extensive range of stays, then personalize your trip with extras like tours, car rentals and activities.
Can I cancel or change the date of my flight from MacArthur Airport (ISP) to Pittsburgh Intl. Airport (PIT)?
In most cases, you can cancel or reschedule your ISP to PIT flight. However, additional charges may apply, especially if you booked more than 24 hours ago. Double-check your itinerary for the airline's fees and rules on flight changes, or if you'd like further information, head to our Customer Service portal.

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*Available to One Key members.