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$264+ Cheap flights from Islip, NY to Pittsburgh (ISP - PIT)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/22. Fares are subject to change and may not be available on all flights or dates of travel.
ISP — PIT
Jan 8 — Jan 151
Thu 1/8
Thu 1/15
1 adult, Economy
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Cheap flight deals from Islip to Pittsburgh

Cheapest flights from Islip to Pittsburgh
Explore the most affordable flight options available from Islip to Pittsburgh. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 9, 2025.

This Kiwi.com deal was found by Cheapflights users on 12/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/196:00 amISP - PIT
2 stops27h 58mMultiple Airlines
Mon 12/226:10 amPIT - ISP
1 stop13h 30mMultiple Airlines
Deal found 12/7$318
This Kiwi.com deal was found by Cheapflights users on 12/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/234:40 pmISP - PIT
1 stop17h 18mMultiple Airlines
Wed 12/318:00 amPIT - ISP
2 stops14h 17mMultiple Airlines
Deal found 12/6$354
This Southwest deal was found by Cheapflights users on 12/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/236:00 pmISP - PIT
1 stop6h 05mSouthwest
Wed 12/316:15 amPIT - ISP
1 stop6h 15mSouthwest
Deal found 12/6$377
This Southwest deal was found by Cheapflights users on 12/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/195:40 amISP - PIT
2 stops10h 35mSouthwest
Mon 12/221:30 pmPIT - ISP
2 stops10h 25mSouthwest
Deal found 12/7$433
This Kiwi.com deal was found by Cheapflights users on 12/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/1110:19 amISP - PIT
1 stop10h 00mMultiple Airlines
Fri 12/123:53 pmPIT - ISP
2 stops17h 20mMultiple Airlines
Deal found 12/8$457
This Kiwi.com deal was found by Cheapflights users on 12/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/106:00 amISP - PIT
1 stop14h 28mMultiple Airlines
Fri 12/123:53 pmPIT - ISP
2 stops17h 20mMultiple Airlines
Deal found 12/6$458
This Kiwi.com deal was found by Cheapflights users on 12/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/1110:38 amISP - PIT
1 stop6h 13mBreeze Airways
Sat 12/138:21 amPIT - ISP
2 stops25h 37mBreeze Airways
Deal found 12/7$474

Find flight deals from Islip to Pittsburgh

Discover tips and strategies to find the most affordable flight options for your journey from Islip (ISP) to Pittsburgh (PIT). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated December 9, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$318
(Kiwi.com)

One-way from

$264
(Cheapflightsfares)

Popular in

December

Cheapest in

September

Average price

$255
Provider with most accurate pricing for Islip Long Island-Pittsburgh flight deals.
Search Deals
Provider most trusted by Cheapflights users for Islip Long Island-Pittsburgh flights.
Search Deals
From Islip Long Island to Pittsburgh
Search Deals
One-way flight from Islip Long Island to Pittsburgh
Search Deals
Highest demand for flights based on searches. 10% potential increase in price ($22 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($6 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Islip to Pittsburgh that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated December 9, 2025.
Use the filters below to find and compare flights from Islip to Pittsburgh that are best for you.

Fly from

Islip

Fly to

Pittsburgh

Route

Depart

Return

Price

IslipPittsburgh

ISP - PIT

ISPPIT

Islip Long Island

Fri 12/19

6:00 am-9:58 am

2 stops27h 58m

Pittsburgh

Mon 12/22

6:10 am-7:40 pm

1 stop13h 30m

$318

IslipPittsburgh

ISP - PIT

ISPPIT

Islip Long Island

Tue 12/23

4:40 pm-9:58 am

1 stop17h 18m

Pittsburgh

Wed 12/31

8:00 am-10:17 pm

2 stops14h 17m

$354

IslipPittsburgh

ISP - PIT

ISPPIT

Islip Long Island

Tue 12/23

6:00 pm-12:05 am

1 stop6h 05m

Pittsburgh

Wed 12/31

6:15 am-12:30 pm

1 stop6h 15m

$377

IslipPittsburgh

ISP - PIT

ISPPIT

Islip Long Island

Fri 12/19

5:40 am-4:15 pm

2 stops10h 35m

Pittsburgh

Mon 12/22

1:30 pm-11:55 pm

2 stops10h 25m

$433

IslipPittsburgh

ISP - PIT

ISPPIT

Islip Long Island

Wed 12/24

4:40 pm-10:42 pm

1 stop30h 02m

Pittsburgh

Sun 12/28

6:10 am-7:40 pm

1 stop13h 30m

$624

IslipPittsburgh

ISP - PIT

ISPPIT

Islip Long Island

Sun 12/21

11:40 am-7:11 pm

2 stops7h 31m

Pittsburgh

Tue 12/30

11:49 am-7:42 pm

2 stops7h 53m

$867

IslipPittsburgh

ISP - PIT

ISPPIT

Islip Long Island

Thu 2/5

11:55 am-7:27 pm

2 stops7h 32m

$283

IslipPittsburgh

ISP - PIT

ISPPIT

Islip Long Island

Mon 2/23

1:26 pm-11:33 pm

1 stop10h 07m

$287

IslipPittsburgh

ISP - PIT

ISPPIT

Islip Long Island

Thu 1/8

11:55 am-7:27 pm

2 stops7h 32m

$301

IslipPittsburgh

ISP - PIT

ISPPIT

Islip Long Island

Thu 12/25

11:40 am-7:11 pm

2 stops7h 31m

$338

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/7

Showing 1-10 of 12 results
1
2

Compare providers for flights from Islip to Pittsburgh

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Islip to Pittsburgh in December.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Islip, New York-Pittsburgh flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Islip, New York-Pittsburgh flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Islip, New York-Pittsburgh flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Islip, New York-Pittsburgh flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Islip, New York-Pittsburgh flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Islip to Pittsburgh

Have a flexible travel schedule? Discover the best time to fly to Pittsburgh from Islip with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Islip to Pittsburgh

What is the cheapest month to book a flight from Islip, New York to Pittsburgh?

Currently, May is the cheapest month in which you can book a flight from Islip, New York to Pittsburgh (average of $31). Flying from Islip, New York to Pittsburgh in December is currently the most expensive (average of $65). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from ISP to PIT?

Find hourly flight availability from Islip to Pittsburgh. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 9, 2025.

It’s typically best to fly out from Islip, New York to Pittsburgh in the afternoon. Doing so could potentially save you 38% on the flight price compared to flying at noon, which is usually more expensive.

Reviews of airlines servicing Pittsburgh

Get insights into the airlines that provide service to Pittsburgh. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Pittsburgh. Reviews last updated December 9, 2025.
Read through reviews of airlines operating flights from Islip to Pittsburgh, such as Southwest. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,254 reviews

Crew

8.6

Entertainment

7.5

Boarding

8.1

Food

7.0

Overall

8.0

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
Southwest
8.0
Very good
4,254 reviews
Southwest
8.0
Very good
4,254 reviews

Crew

8.6

Entertainment

7.5

Boarding

8.1

Food

7.0

Overall

8.0

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am

Related info for your journey

Find useful and relevant information for your journey from Islip to Pittsburgh. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Islip, New York to Pittsburgh?

    Airlines like Southwest fly from Islip, New York to Pittsburgh in about 6h 05m. The time it takes to get you to your destination can typically vary by up to . The distance between Islip, New York and Pittsburgh is about 375 mi.

  • What is the cheapest airline to fly from Islip, New York to Pittsburgh round-trip?

    Southwest, at $183, was found to be the cheapest airline from Islip, New York to Pittsburgh..

  • Can I find deals for flights from Islip to Pittsburgh that include hotel bookings?

    Yes. In addition to deals on Islip to Pittsburgh flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Islip to Pittsburgh?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Islip to Pittsburgh.

  • Can I find deals for business class flights from Islip to Pittsburgh?

    Yes. Cheapflights offers flight deals from Islip to Pittsburgh by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Islip, New York to Pittsburgh?

    Currently, May is the cheapest month in which you can book a flight from Islip, New York to Pittsburgh (average of $31). Flying from Islip, New York to Pittsburgh in December is currently the most expensive (average of $65). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Pittsburgh?

Book flights to Pittsburgh if you plan to visit one of these locations
Mars
Steubenville
Monroeville
Washington
Wexford
Belle Vernon

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Alternative routes for Islip to Pittsburgh

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Top airline flying from Islip to Pittsburgh

Discover the top airline that operate flights from Islip to Pittsburgh. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated December 9, 2025.
AirlineCheapestAverageFlexibilityOn-time
SouthwestCheapest$183Average$453FlexibilityNo cancel feeOn-time63%

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