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$169+ 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 5/15. Fares are subject to change and may not be available on all flights or dates of travel.
ISP — PIT
Jan 17 — Jan 241
Sat 1/17
Sat 1/24
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 18, 2025.

This Southwest deal was found by Cheapflights users on 12/16. 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 12/265:50 pmISP - PIT
2 stops6h 40mSouthwest
Wed 12/3110:45 amPIT - ISP
1 stop4h 35mSouthwest
Deal found 12/16$447
This Southwest deal was found by Cheapflights users on 12/17. 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 12/265:50 pmISP - PIT
2 stops6h 40mSouthwest
Mon 12/295:50 amPIT - ISP
1 stop6h 05mSouthwest
Deal found 12/17$494
This Southwest deal was found by Cheapflights users on 12/17. 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.
Sat 12/275:30 amISP - PIT
2 stops11h 10mSouthwest
Mon 12/296:15 pmPIT - ISP
1 stop5h 40mSouthwest
Deal found 12/17$500
This Southwest deal was found by Cheapflights users on 12/16. 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 12/2612:40 pmISP - PIT
1 stop4h 05mSouthwest
Sun 12/285:50 amPIT - ISP
1 stop6h 05mSouthwest
Deal found 12/16$547
This Southwest deal was found by Cheapflights users on 12/17. 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.
Mon 12/2212:40 pmISP - PIT
1 stop4h 05mSouthwest
Mon 12/226:15 pmPIT - ISP
1 stop5h 40mSouthwest
Deal found 12/17$643

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 18, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$229
(Southwest)

One-way from

$169
(Southwest)

Popular in

December

Cheapest in

September

Average price

$259
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 ($23 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 18, 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

Thu 2/5

11:50 am-5:50 pm

1 stop6h 00m

Pittsburgh

Sun 2/8

10:00 am-4:15 pm

1 stop6h 15m

$229

IslipPittsburgh

ISP - PIT

ISPPIT

Islip Long Island

Fri 2/27

5:35 pm-11:20 pm

1 stop5h 45m

Pittsburgh

Sat 2/28

6:35 am-2:20 pm

1 stop7h 45m

$252

IslipPittsburgh

ISP - PIT

ISPPIT

Islip Long Island

Thu 1/1

10:38 am-4:51 pm

1 stop6h 13m

Pittsburgh

Mon 1/5

7:55 pm-11:10 am

2 stops39h 15m

$375

IslipPittsburgh

ISP - PIT

ISPPIT

Islip Long Island

Sat 12/27

5:30 am-4:40 pm

2 stops11h 10m

Pittsburgh

Mon 12/29

6:15 pm-11:55 pm

1 stop5h 40m

$500

IslipPittsburgh

ISP - PIT

ISPPIT

Islip Long Island

Thu 2/5

7:26 pm-3:49 pm

3 stops20h 23m

Pittsburgh

Sun 2/8

8:07 pm-1:31 pm

2 stops17h 24m

$689

IslipPittsburgh

ISP - PIT

ISPPIT

Islip Long Island

Fri 5/15

4:30 pm-8:00 pm

1 stop3h 30m

$169

IslipPittsburgh

ISP - PIT

ISPPIT

Islip Long Island

Tue 1/13

12:25 pm-10:48 pm

1 stop10h 23m

$172

IslipPittsburgh

ISP - PIT

ISPPIT

Islip Long Island

Fri 5/15

2:28 pm-1:54 pm

3 stops23h 26m

$245

IslipPittsburgh

ISP - PIT

ISPPIT

Islip Long Island

Thu 2/19

11:55 am-7:27 pm

2 stops7h 32m

$301

IslipPittsburgh

ISP - PIT

ISPPIT

Islip Long Island

Sun 1/11

12:25 pm-10:48 pm

1 stop10h 23m

$337

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/16

Showing 1-10 of 16 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 18, 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.

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. 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.

  • 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
Washington
Monroeville
Wexford
Belle Vernon

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