HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Islip

$171+ Cheap flights from Pittsburgh to Islip, NY (PIT - ISP)

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 5/17. Fares are subject to change and may not be available on all flights or dates of travel.
PIT — ISP
Apr 17 — Apr 241
Fri 4/17
Fri 4/24
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Pittsburgh to Islip with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Pittsburgh to Islip

Cheapest flights from Pittsburgh to Islip
Explore the most affordable flight options available from Pittsburgh to Islip. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 18, 2026.

This Southwest deal was found by Cheapflights users on 3/16. 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.
Mon 4/135:00 pm
PIT
-
ISP
1 stop6h 30m
Southwest
Mon 4/204:30 pm
ISP
-
PIT
1 stop3h 30m
Southwest
Deal found 3/16$228
This Southwest deal was found by Cheapflights users on 3/17. 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 4/254:55 pm
PIT
-
ISP
1 stop6h 25m
Southwest
Sun 4/265:25 pm
ISP
-
PIT
1 stop6h 20m
Southwest
Deal found 3/17$260
This Southwest deal was found by Cheapflights users on 3/13. 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 8/245:35 am
PIT
-
ISP
1 stop4h 05m
Southwest
Thu 8/274:05 pm
ISP
-
PIT
1 stop5h 45m
Southwest
Deal found 3/13$341
This Southwest deal was found by Cheapflights users on 3/13. 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 8/711:20 am
PIT
-
ISP
1 stop5h 05m
Southwest
Thu 8/136:10 am
ISP
-
PIT
1 stop6h 00m
Southwest
Deal found 3/13$349
This Southwest deal was found by Cheapflights users on 3/12. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/56:15 am
PIT
-
ISP
1 stop5h 30m
Southwest
Sun 4/121:50 pm
ISP
-
PIT
1 stop6h 10m
Southwest
Deal found 3/12$351
This Southwest deal was found by Cheapflights users on 3/16. 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 7/105:00 am
PIT
-
ISP
1 stop5h 30m
Southwest
Sun 7/126:00 am
ISP
-
PIT
1 stop5h 30m
Southwest
Deal found 3/16$359

Find flight deals from Pittsburgh to Islip

Discover tips and strategies to find the most affordable flight options for your journey from Pittsburgh (PIT) to Islip (ISP). 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 March 18, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$228
(Southwest)

One-way from

$171
(Southwest)

Popular in

December

Cheapest in

September

Average price

$199
Provider with most accurate pricing for Pittsburgh-Islip Long Island flight deals.
Search Deals
Provider most trusted by Cheapflights users for Pittsburgh-Islip Long Island flights.
Search Deals
From Pittsburgh to Islip Long Island
Search Deals
One-way flight from Pittsburgh to Islip Long Island
Search Deals
Highest demand for flights based on searches. 9% potential increase in price ($18 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($5 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Pittsburgh to Islip 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 March 18, 2026.
Use the filters below to find and compare flights from Pittsburgh to Islip that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

PittsburghIslip

PIT - ISP

PITISP

Pittsburgh

Sat 4/25

4:55 pm-11:20 pm

1 stop6h 25m

Islip Long Island

Sun 4/26

5:25 pm-11:45 pm

1 stop6h 20m

$260

PittsburghIslip

PIT - ISP

PITISP

Pittsburgh

Mon 4/13

5:00 pm-11:30 pm

1 stop6h 30m

Islip Long Island

Mon 4/20

6:00 am-3:15 pm

2 stops9h 15m

$293

PittsburghIslip

PIT - ISP

PITISP

Pittsburgh

Sun 4/5

6:15 am-11:45 am

1 stop5h 30m

Islip Long Island

Sun 4/12

1:50 pm-8:00 pm

1 stop6h 10m

$351
Quickest round-trip

PittsburghIslip

PIT - ISP

PITISP

Pittsburgh

Fri 7/10

5:00 am-10:30 am

1 stop5h 30m

Islip Long Island

Sun 7/12

6:00 am-11:30 am

1 stop5h 30m

$359

PittsburghIslip

PIT - ISP

PITISP

Pittsburgh

Fri 8/7

11:20 am-4:25 pm

1 stop5h 05m

Islip Long Island

Thu 8/13

12:35 pm-9:50 pm

2 stops9h 15m

$362
Cheapest one-way

PittsburghIslip

PIT - ISP

PITISP

Pittsburgh

Sun 5/17

5:55 pm-11:50 pm

1 stop5h 55m

$171

PittsburghIslip

PIT - ISP

PITISP

Pittsburgh

Sun 5/17

8:58 pm-1:18 pm

3 stops40h 20m

$191

PittsburghIslip

PIT - ISP

PITISP

Pittsburgh

Sun 7/12

8:58 pm-1:28 pm

1 stop16h 30m

$304

PittsburghIslip

PIT - ISP

PITISP

Pittsburgh

Thu 4/30

2:13 pm-1:31 pm

1 stop23h 18m

$304

PittsburghIslip

PIT - ISP

PITISP

Pittsburgh

Mon 5/18

9:21 am-11:16 am

1 stop25h 55m

$324

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/15

Showing 1-10 of 13 resultsSorted by cheapest first
1
2

Compare providers for flights from Pittsburgh to Islip

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 Pittsburgh to Islip in March.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice 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 Pittsburgh-Islip, New York flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Pittsburgh-Islip, New York flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Pittsburgh-Islip, New York flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Pittsburgh-Islip, New York flights, Cheapflights users trust FlightHub the most. FlightHub 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 Pittsburgh-Islip, New York 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 Pittsburgh to Islip

Have a flexible travel schedule? Discover the best time to fly to Islip from Pittsburgh 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 Pittsburgh to Islip

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

Currently, April is the cheapest month in which you can book a flight from Pittsburgh to Islip, New York (average of $43). Flying from Pittsburgh to Islip, New York in February is currently the most expensive (average of $93). 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.

Reviews of airlines servicing Islip

Get insights into the airlines that provide service to Islip. 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 Islip. Reviews last updated March 18, 2026.
Peruse reviews from past customers who have flown with Southwest from Pittsburgh to Islip to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,320 reviews

Comfort

8.0

Crew

8.6

Overall

8.0

Boarding

8.1

Food

7.0

Entertainment

7.5

Reviews

1 / 20
10.0
Excellent

Anonymous,Mar 2026

KOA - HNL

pretty smooth and fast service ever, that flight is very helpful each and everyone for price and also fright for free..
Southwest
8.0
Very good
4,320 reviews
Southwest
8.0
Very good
4,320 reviews

Comfort

8.0

Crew

8.6

Overall

8.0

Boarding

8.1

Food

7.0

Entertainment

7.5

Reviews

1 / 20
10.0
Excellent

Anonymous,Mar 2026

KOA - HNL

pretty smooth and fast service ever, that flight is very helpful each and everyone for price and also fright for free..

Related info for your journey

Find useful and relevant information for your journey from Pittsburgh to Islip. 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 Pittsburgh to Islip, New York?

    A quick flight from Pittsburgh to Islip, New York can take about 6h 25m. Southwest provides one of the quickest options available for as low as $260. Airlines will cover a distance of 375 mi.

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

    Our cheapest airline available from Pittsburgh to Islip, New York is Southwest. Our recent data shows that you can find tickets from as low as $203 on this airline.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Pittsburgh to Islip 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 Pittsburgh to Islip, New York?

    Currently, April is the cheapest month in which you can book a flight from Pittsburgh to Islip, New York (average of $43). Flying from Pittsburgh to Islip, New York in February is currently the most expensive (average of $93). 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 Islip?

Book flights to Islip if you plan to visit one of these locations
Riverhead

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Pittsburgh to Islip

See prices for flight routes from nearby airports that may be better suited for you.
LaGuardia to Buffalo flights
Pittsburgh to LaGuardia flights
Reagan-National to LaGuardia flights
Pittsburgh to John F Kennedy Intl flights
John F Kennedy Intl to Buffalo flights
Pittsburgh to Newark flights
Newark to Buffalo flights
Dulles Intl to John F Kennedy Intl flights
Reagan-National to John F Kennedy Intl flights
Dulles Intl to LaGuardia flights
Dulles Intl to Newark flights
Reagan-National to Newark flights
LaGuardia to Rochester flights
John F Kennedy Intl to Rochester flights
Newark to Rochester flights
Dulles Intl to Buffalo flights
Dulles Intl to Rochester flights
Reagan-National to Buffalo flights
Reagan-National to Rochester flights
John F Kennedy Intl to Syracuse flights
LaGuardia to Syracuse flights
Reagan-National to Albany flights
Dulles Intl to Albany flights
Reagan-National to Syracuse flights
Dulles Intl to Syracuse flights
Newark to Syracuse flights
Philadelphia to Buffalo flights
Dulles Intl to Ithaca flights
Dulles Intl to White Plains flights
Reagan-National to White Plains flights
Philadelphia to John F Kennedy Intl flights
Philadelphia to Newark flights
LaGuardia to Ithaca flights
Newark to Ithaca flights
Philadelphia to LaGuardia flights
John F Kennedy Intl to Ithaca flights
Philadelphia to Rochester flights
Pittsburgh to Stewart flights
Philadelphia to Albany flights
Pittsburgh to Bradford flights
Pittsburgh to Syracuse flights
Pittsburgh to Albany flights
Philadelphia to Syracuse flights
State College to Newark flights
John F Kennedy Intl to Albany flights
LaGuardia to Albany flights
Reagan-National to Ithaca flights
State College to LaGuardia flights

Top airline flying from Pittsburgh to Islip

Discover the top airline that operate flights from Pittsburgh to Islip. 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 March 18, 2026.
AirlineCheapestAverageFlexibilityOn-time
SouthwestCheapest$203Average$304FlexibilityNo cancel feeOn-time63%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.
Site
©2026 Cheapflights