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Islip

$123+ Cheap flights from Pittsburgh to Islip (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 10/4. Fares are subject to change and may not be available on all flights or dates of travel.
PIT — ISP
oct. 15 — oct. 221
mié. 10/15
mié. 10/22
1 adult, Economy
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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 septiembre 15, 2025.

Round-trip from

$185
(Southwest)

One-way from

$123
(Southwest)

Popular in

March

Cheapest in

October

Average price

$316
From Pittsburgh to Islip Long Island
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One-way flight from Pittsburgh to Islip Long Island
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Highest demand for flights based on searches. 9% potential increase in price ($34 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($11 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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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 septiembre 15, 2025.

This Southwest deal was found by Cheapflights users on 9/15. 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.
jue. 11/135:55 pmPIT - ISP
1 stop5h 55mSouthwest
sáb. 11/153:40 pmISP - PIT
1 stop5h 55mSouthwest
Deal found 9/15$185
This Southwest deal was found by Cheapflights users on 9/13. 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. 10/3111:10 amPIT - ISP
1 stop6h 00mSouthwest
sáb. 11/13:10 pmISP - PIT
1 stop6h 40mSouthwest
Deal found 9/13$200
This Southwest deal was found by Cheapflights users on 9/13. 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.
sáb. 10/412:00 pmPIT - ISP
1 stop4h 15mSouthwest
dom. 10/55:25 amISP - PIT
1 stop6h 30mSouthwest
Deal found 9/13$250
This Southwest deal was found by Cheapflights users on 9/13. 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. 10/36:00 pmPIT - ISP
1 stop5h 45mSouthwest
dom. 10/55:25 amISP - PIT
2 stops9h 05mSouthwest
Deal found 9/13$278
This Kiwi.com deal was found by Cheapflights users on 9/15. 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.
mar. 9/307:10 amPIT - ISP
1 stop27h 30mMultiple Airlines
sáb. 10/45:05 pmISP - PIT
1 stop16h 24mMultiple Airlines
Deal found 9/15$297

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 septiembre 15, 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

jue. 11/13

5:55 pm-11:50 pm

1 stop5h 55m

Islip Long Island

sáb. 11/15

3:40 pm-9:35 pm

1 stop5h 55m

$185

PittsburghIslip

PIT - ISP

PITISP

Pittsburgh

vie. 10/31

11:10 am-5:10 pm

1 stop6h 00m

Islip Long Island

sáb. 11/1

3:10 pm-9:50 pm

1 stop6h 40m

$200

PittsburghIslip

PIT - ISP

PITISP

Pittsburgh

sáb. 10/4

12:00 pm-4:15 pm

1 stop4h 15m

Islip Long Island

dom. 10/5

5:25 am-11:55 am

1 stop6h 30m

$250

PittsburghIslip

PIT - ISP

PITISP

Pittsburgh

vie. 10/3

6:00 pm-11:45 pm

1 stop5h 45m

Islip Long Island

dom. 10/5

5:25 am-11:55 am

1 stop6h 30m

$278

PittsburghIslip

PIT - ISP

PITISP

Pittsburgh

sáb. 10/4

12:00 pm-4:15 pm

1 stop4h 15m

$123

PittsburghIslip

PIT - ISP

PITISP

Pittsburgh

lun. 11/3

6:15 am-3:05 pm

2 stops8h 50m

$204

PittsburghIslip

PIT - ISP

PITISP

Pittsburgh

sáb. 10/4

8:21 am-11:00 am

3 stops26h 39m

$215

PittsburghIslip

PIT - ISP

PITISP

Pittsburgh

sáb. 9/20

6:04 pm-10:40 am

1 stop16h 36m

$235

PittsburghIslip

PIT - ISP

PITISP

Pittsburgh

dom. 9/21

10:24 am-10:40 am

1 stop24h 16m

$264

PittsburghIslip

PIT - ISP

PITISP

Pittsburgh

dom. 9/21

3:50 pm-10:40 am

2 stops42h 50m

$280

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/13

Showing 1-10 of 15 results
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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?

Currently, January is the cheapest month in which you can book a flight from Pittsburgh to Islip (average of $108). Flying from Pittsburgh to Islip 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 septiembre 15, 2025.

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

How much does it cost to fly round-trip from Pittsburgh to Islip?

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 septiembre 15, 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
4,242 reviews

Crew

8.6

Food

7.0

Comfort

8.0

Entertainment

7.5

Overall

8.0

Boarding

8.1

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

Crew

8.6

Food

7.0

Comfort

8.0

Entertainment

7.5

Overall

8.0

Boarding

8.1

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 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?

    A quick flight from Pittsburgh to Islip can take about 5h 55m. Southwest provides one of the quickest options available for as low as $185. Pittsburgh and Islip are separated by a distance of 375 mi.

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

    Currently priced at $219, Southwest will fly you from Pittsburgh to Islip and back. In addition to Southwest, many other airlines offer competitively priced options for your trip. You may be able to fly from Pittsburgh to Islip for 36% less than the average price by searching for 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?

    Currently, January is the cheapest month in which you can book a flight from Pittsburgh to Islip (average of $108). Flying from Pittsburgh to Islip 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

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Alternative routes for Pittsburgh to Islip

See prices for flight routes from nearby airports that may be better suited for you.
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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 septiembre 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
SouthwestCheapest$219Average$333FlexibilityNo cancel feeOn-time63%

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