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$142+ 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 12/19. Fares are subject to change and may not be available on all flights or dates of travel.
ISP — PIT
Dec 13 — Dec 201
Sat 12/13
Sat 12/20
1 adult, Economy
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Find 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 November 13, 2025.

This Trip.com deal was found by Cheapflights users on 11/12. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/2710:02 amISP - PIT
1 stop24h 07mFrontier
Mon 12/15:18 pmPIT - ISP
2 stops26h 16mFrontier
Deal found 11/12$224
This Kiwi.com deal was found by Cheapflights users on 11/11. 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.
Sat 11/154:58 pmISP - PIT
1 stop24h 52mFrontier
Mon 11/175:30 pmPIT - ISP
2 stops24h 12mFrontier
Deal found 11/11$429
This Kiwi.com deal was found by Cheapflights users on 11/10. 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 11/1111:30 amISP - PIT
2 stops33h 41mMultiple Airlines
Tue 11/187:16 amPIT - ISP
1 stop27h 21mMultiple Airlines
Deal found 11/10$481
This Kiwi.com deal was found by Cheapflights users on 11/12. 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.
Sun 11/168:49 amISP - PIT
2 stops30h 24mMultiple Airlines
Tue 11/187:16 amPIT - ISP
1 stop27h 21mMultiple Airlines
Deal found 11/12$493
This Kiwi.com deal was found by Cheapflights users on 11/12. 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 11/2710:02 amISP - PIT
1 stop24h 07mMultiple Airlines
Mon 12/18:32 pmPIT - ISP
1 stop13h 56mMultiple Airlines
Deal found 11/12$496
This Kiwi.com deal was found by Cheapflights users on 11/11. 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 11/2611:03 amISP - PIT
1 stop21h 16mMultiple Airlines
Sun 11/308:01 amPIT - ISP
1 stop24h 01mMultiple Airlines
Deal found 11/11$535
This Southwest deal was found by Cheapflights users on 11/10. 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 11/1112:55 pmISP - PIT
2 stops8h 10mSouthwest
Tue 11/181:10 pmPIT - ISP
2 stops8h 30mSouthwest
Deal found 11/10$606

Cheap 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 November 13, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$224
(Trip.com)

One-way from

$142
(Kiwi.com)

Popular in

December

Cheapest in

September

Average price

$227
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 ($5 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in November 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 November 13, 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 11/27

10:02 am-10:09 am

1 stop24h 07m

Pittsburgh

Mon 12/1

5:18 pm-7:34 pm

2 stops26h 16m

$224

IslipPittsburgh

ISP - PIT

ISPPIT

Islip Long Island

Mon 1/5

5:50 am-11:35 am

1 stop5h 45m

Pittsburgh

Thu 1/8

3:55 pm-9:55 pm

1 stop6h 00m

$242

IslipPittsburgh

ISP - PIT

ISPPIT

Islip Long Island

Mon 1/5

9:21 am-9:58 am

2 stops24h 37m

Pittsburgh

Thu 1/8

10:45 am-7:54 pm

3 stops33h 09m

$338

IslipPittsburgh

ISP - PIT

ISPPIT

Islip Long Island

Thu 11/27

10:02 am-10:09 am

1 stop24h 07m

Pittsburgh

Mon 12/1

8:32 pm-10:28 am

1 stop13h 56m

$496

IslipPittsburgh

ISP - PIT

ISPPIT

Islip Long Island

Wed 11/26

11:03 am-8:19 am

1 stop21h 16m

Pittsburgh

Sun 11/30

8:01 am-8:02 am

1 stop24h 01m

$535

IslipPittsburgh

ISP - PIT

ISPPIT

Islip Long Island

Thu 11/27

7:36 pm-7:52 pm

3 stops24h 16m

Pittsburgh

Mon 12/1

3:53 pm-10:28 am

2 stops18h 35m

$1,050

IslipPittsburgh

ISP - PIT

ISPPIT

Islip Long Island

Wed 11/26

8:45 pm-12:09 pm

2 stops15h 24m

Pittsburgh

Sun 11/30

7:51 pm-8:07 pm

2 stops24h 16m

$1,138

IslipPittsburgh

ISP - PIT

ISPPIT

Islip Long Island

Fri 12/19

1:27 pm-2:11 pm

2 stops24h 44m

$142

IslipPittsburgh

ISP - PIT

ISPPIT

Islip Long Island

Fri 12/19

1:27 pm-10:59 pm

1 stop9h 32m

$156

IslipPittsburgh

ISP - PIT

ISPPIT

Islip Long Island

Tue 12/23

5:40 am-12:45 pm

1 stop7h 05m

$174

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/11

Showing 1-10 of 17 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 November.
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 November 13, 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 November 13, 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
4,242 reviews

Boarding

8.1

Comfort

8.0

Food

7.0

Overall

8.0

Entertainment

7.5

Crew

8.6

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Southwest
8.0
Very good
4,242 reviews
Southwest
8.0
Very good
4,242 reviews

Boarding

8.1

Comfort

8.0

Food

7.0

Overall

8.0

Entertainment

7.5

Crew

8.6

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines

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 Frontier and Southwest fly from Islip, New York to Pittsburgh in about 5h 45m. The time it takes to get you to your destination can typically vary by up to 18h 22m. The distance between Islip, New York and Pittsburgh is about 375 mi. This flight may include one or multiple stops.

  • 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

See prices for flight routes from nearby airports that may be better suited for you.
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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 November 13, 2025.
AirlineCheapestAverageFlexibilityOn-time
SouthwestCheapest$183Average$453FlexibilityNo cancel feeOn-time63%

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