HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Islip

$106+ 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 9/15. Fares are subject to change and may not be available on all flights or dates of travel.
PIT — ISP
ago. 19 — ago. 261
mar. 8/19
mar. 8/26
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

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 agosto 14, 2025.

Round-trip from

$208
(Kiwi.com)

One-way from

$106
(Kiwi.com)

Popular in

March

Cheapest in

October

Average price

$396
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 ($34 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($10 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in August 2025
Search Deals

Find 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 agosto 14, 2025.

This Kiwi.com deal was found by Cheapflights users on 8/13. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 9/56:04 pmPIT - ISP
1 stop16h 51mMultiple Airlines
dom. 9/711:35 amISP - PIT
1 stop11h 47mMultiple Airlines
Deal found 8/13$208
This Frontier deal was found by Cheapflights users on 8/13. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 8/225:12 pmPIT - ISP
2 stops6h 45mFrontier
jue. 8/286:05 amISP - PIT
1 stop12h 12mFrontier
Deal found 8/13$219
This Frontier deal was found by Cheapflights users on 8/13. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 8/213:10 pmPIT - ISP
2 stops18h 03mFrontier
lun. 8/256:45 amISP - PIT
2 stops9h 42mFrontier
Deal found 8/13$268
This Southwest deal was found by Cheapflights users on 8/13. 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.
vie. 9/55:00 pmPIT - ISP
1 stop5h 55mSouthwest
dom. 9/76:00 amISP - PIT
2 stops6h 40mSouthwest
Deal found 8/13$284
This Southwest deal was found by Cheapflights users on 8/14. 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.
lun. 11/245:30 amPIT - ISP
1 stop7h 20mSouthwest
lun. 12/15:50 pmISP - PIT
1 stop5h 55mSouthwest
Deal found 8/14$286
This Trip.com deal was found by Cheapflights users on 8/13. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 8/277:08 amPIT - ISP
1 stop16h 33mMultiple Airlines
jue. 8/286:05 amISP - PIT
1 stop11h 00mMultiple Airlines
Deal found 8/13$293
This Frontier deal was found by Cheapflights users on 8/13. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 8/225:12 pmPIT - ISP
2 stops6h 45mFrontier
dom. 8/247:43 pmISP - PIT
2 stops20h 44mFrontier
Deal found 8/13$308
This Frontier deal was found by Cheapflights users on 8/13. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 8/225:12 pmPIT - ISP
2 stops6h 45mFrontier
lun. 8/258:59 amISP - PIT
1 stop10h 37mFrontier
Deal found 8/13$317
This Trip.com deal was found by Cheapflights users on 8/14. 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.
vie. 8/291:43 pmPIT - ISP
1 stop10h 14mMultiple Airlines
lun. 9/16:45 amISP - PIT
1 stop16h 25mMultiple Airlines
Deal found 8/14$336

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 agosto 14, 2025.
Use the filters below to find and compare flights from Pittsburgh to Islip that are best for you.

Fly from

Pittsburgh

Fly to

Islip

Route

Depart

Return

Price

PittsburghIslip

PIT - ISP

PITISP

Pittsburgh

vie. 9/5

6:04 pm-10:55 am

1 stop16h 51m

Islip Long Island

dom. 9/7

11:35 am-11:22 pm

1 stop11h 47m

$208

PittsburghIslip

PIT - ISP

PITISP

Pittsburgh

vie. 9/5

5:00 pm-10:55 pm

1 stop5h 55m

Islip Long Island

dom. 9/7

6:00 am-12:40 pm

2 stops6h 40m

$284

PittsburghIslip

PIT - ISP

PITISP

Pittsburgh

lun. 11/24

5:30 am-12:50 pm

1 stop7h 20m

Islip Long Island

lun. 12/1

5:50 pm-11:45 pm

1 stop5h 55m

$286

PittsburghIslip

PIT - ISP

PITISP

Pittsburgh

mié. 8/27

7:08 am-11:41 pm

1 stop16h 33m

Islip Long Island

jue. 8/28

6:05 am-5:05 pm

1 stop11h 00m

$293

PittsburghIslip

PIT - ISP

PITISP

Pittsburgh

vie. 8/29

1:43 pm-11:57 pm

1 stop10h 14m

Islip Long Island

lun. 9/1

6:45 am-11:10 pm

1 stop16h 25m

$336

PittsburghIslip

PIT - ISP

PITISP

Pittsburgh

mié. 8/27

12:50 pm-9:05 pm

2 stops8h 15m

Islip Long Island

jue. 8/28

3:05 pm-6:05 pm

1 stop3h 00m

$362

PittsburghIslip

PIT - ISP

PITISP

Pittsburgh

jue. 8/28

7:08 am-6:38 pm

1 stop11h 30m

Islip Long Island

lun. 9/1

8:59 am-9:15 am

1 stop24h 16m

$371

PittsburghIslip

PIT - ISP

PITISP

Pittsburgh

vie. 9/5

2:17 pm-10:55 am

2 stops20h 38m

Islip Long Island

dom. 9/7

11:35 am-1:32 pm

2 stops25h 57m

$374

PittsburghIslip

PIT - ISP

PITISP

Pittsburgh

vie. 12/26

5:50 am-11:55 am

1 stop6h 05m

Islip Long Island

lun. 12/29

6:00 pm-12:05 am

1 stop6h 05m

$377

PittsburghIslip

PIT - ISP

PITISP

Pittsburgh

lun. 9/15

6:04 pm-10:40 am

1 stop16h 36m

$106

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/14

Showing 1-10 of 17 results
1
2

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, January is the cheapest month in which you can book a flight from Pittsburgh to Islip, New York (average of $108). Flying from Pittsburgh to Islip, New York in November is currently the most expensive (average of $213). 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 PIT to ISP?

Find hourly flight availability from Pittsburgh to Islip. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated agosto 14, 2025.

When flying from Pittsburgh to Islip, New York, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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 agosto 14, 2025.
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
4,244 reviews

Entertainment

7.5

Overall

8.0

Comfort

8.0

Crew

8.6

Boarding

8.1

Food

7.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
Southwest
8.0
Very good
4,244 reviews
Southwest
8.0
Very good
4,244 reviews

Entertainment

7.5

Overall

8.0

Comfort

8.0

Crew

8.6

Boarding

8.1

Food

7.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.

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.

  • 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 $219 on this airline. This flight start at 36% lower than the current average price 3 months from now.

  • 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, January is the cheapest month in which you can book a flight from Pittsburgh to Islip, New York (average of $108). Flying from Pittsburgh to Islip, New York in November is currently the most expensive (average of $213). 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
Southampton

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.
Pittsburgh to LaGuardia flights
Reagan-National to John F Kennedy Intl flights
John F Kennedy Intl to Buffalo flights
Newark to Buffalo flights
LaGuardia to Buffalo flights
Dulles Intl to John F Kennedy Intl flights
Pittsburgh to John F Kennedy Intl flights
Reagan-National to LaGuardia flights
Dulles Intl to LaGuardia flights
Reagan-National to Newark flights
Pittsburgh to Newark flights
Dulles Intl to Newark flights
LaGuardia to Rochester flights
John F Kennedy Intl to Rochester flights
Dulles Intl to Albany flights
Newark to Rochester flights
Dulles Intl to Buffalo flights
John F Kennedy Intl to Syracuse flights
Reagan-National to Albany flights
Reagan-National to Buffalo flights
Reagan-National to Syracuse flights
Dulles Intl to Syracuse flights
LaGuardia to Syracuse flights
Dulles Intl to Rochester flights
Philadelphia to Buffalo flights
Reagan-National to Rochester flights
Newark to Syracuse flights
Pittsburgh to Stewart flights
Dulles Intl to Islip flights
Philadelphia to John F Kennedy Intl flights
Philadelphia to Syracuse flights
Philadelphia to Rochester flights
Reagan-National to White Plains flights
Dulles Intl to Ithaca flights
Dulles Intl to White Plains flights
Philadelphia to Newark flights
Philadelphia to LaGuardia flights
John F Kennedy Intl to Albany flights
John F Kennedy Intl to Ithaca flights
Newark to Ithaca flights
John F Kennedy Intl to Saranac Lake flights
Reagan-National to Ithaca flights
Newark to Niagara Falls flights
LaGuardia to Albany flights
Philadelphia to Albany flights
Pittsburgh to White Plains flights
Newark to Albany flights
Reagan-National to Islip flights
Pittsburgh to Albany flights
Reagan-National to Saranac Lake 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 agosto 14, 2025.
AirlineCheapestAverageFlexibilityOn-time
SouthwestCheapest$219Average$332FlexibilityNo 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.