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$190+ Cheap flights from Islip to Pittsburgh (ISP - PIT)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/1. Fares are subject to change and may not be available on all flights or dates of travel.
ISP — PIT
oct. 15 — oct. 221
mié. 10/15
mié. 10/22
1 adult, Economy
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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 septiembre 15, 2025.

Round-trip from

$190
(Southwest)

Popular in

January

Cheapest in

May

Average price

$398
From Islip Long Island to Pittsburgh
Search Deals
Highest demand for flights based on searches. 23% potential increase in price ($121 potential increase over avg. RT price).
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Cheapest flight prices on average. 5% potential price decrease ($21 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 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 septiembre 15, 2025.

This Southwest deal was found by Cheapflights users on 9/14. 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.
sáb. 11/16:05 amISP - PIT
1 stop9h 55mSouthwest
lun. 11/35:45 amPIT - ISP
1 stop6h 30mSouthwest
Deal found 9/14$190
This Southwest deal was found by Cheapflights users on 9/14. 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.
vie. 10/243:20 pmISP - PIT
1 stop7h 45mSouthwest
dom. 10/266:00 amPIT - ISP
1 stop6h 10mSouthwest
Deal found 9/14$214
This Trip.com deal was found by Cheapflights users on 9/14. 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.
lun. 9/2911:40 amISP - PIT
1 stop9h 41mMultiple Airlines
vie. 10/310:35 amPIT - ISP
1 stop5h 31mMultiple Airlines
Deal found 9/14$281
This Kiwi.com deal was found by Cheapflights users on 9/14. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 10/162:19 pmISP - PIT
2 stops27h 27mMultiple Airlines
lun. 10/278:32 pmPIT - ISP
1 stop13h 26mMultiple Airlines
Deal found 9/14$302
This Southwest deal was found by Cheapflights users on 9/14. 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.
jue. 10/165:35 pmISP - PIT
1 stop6h 00mSouthwest
lun. 10/275:00 amPIT - ISP
1 stop9h 35mSouthwest
Deal found 9/14$307
This Kiwi.com deal was found by Cheapflights users on 9/12. 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.
vie. 9/198:47 pmISP - PIT
1 stop10h 59mMultiple Airlines
mar. 9/236:04 pmPIT - ISP
2 stops43h 35mMultiple Airlines
Deal found 9/12$430

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 septiembre 15, 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

sáb. 11/1

6:05 am-4:00 pm

1 stop9h 55m

Pittsburgh

lun. 11/3

5:45 am-12:15 pm

1 stop6h 30m

$190

IslipPittsburgh

ISP - PIT

ISPPIT

Islip Long Island

vie. 10/24

3:20 pm-11:05 pm

1 stop7h 45m

Pittsburgh

dom. 10/26

6:00 am-12:10 pm

1 stop6h 10m

$214

IslipPittsburgh

ISP - PIT

ISPPIT

Islip Long Island

jue. 10/16

2:19 pm-5:46 pm

2 stops27h 27m

Pittsburgh

lun. 10/27

8:32 pm-9:58 am

1 stop13h 26m

$302

IslipPittsburgh

ISP - PIT

ISPPIT

Islip Long Island

lun. 9/29

5:05 pm-9:30 am

1 stop16h 25m

Pittsburgh

vie. 10/3

3:48 pm-8:05 pm

2 stops28h 17m

$325

IslipPittsburgh

ISP - PIT

ISPPIT

Islip Long Island

vie. 9/19

8:47 pm-7:46 am

1 stop10h 59m

Pittsburgh

mar. 9/23

6:04 pm-1:39 pm

2 stops43h 35m

$430

IslipPittsburgh

ISP - PIT

ISPPIT

Islip Long Island

jue. 10/16

5:30 am-11:55 am

2 stops6h 25m

Pittsburgh

lun. 10/27

4:35 pm-11:45 pm

2 stops7h 10m

$497

IslipPittsburgh

ISP - PIT

ISPPIT

Islip Long Island

vie. 9/19

3:05 pm-11:40 pm

2 stops8h 35m

Pittsburgh

mar. 9/23

6:10 am-3:10 pm

2 stops9h 00m

$536

IslipPittsburgh

ISP - PIT

ISPPIT

Islip Long Island

vie. 10/24

8:47 pm-12:09 pm

3 stops39h 22m

Pittsburgh

dom. 10/26

5:46 pm-6:28 pm

2 stops24h 42m

$697

IslipPittsburgh

ISP - PIT

ISPPIT

Islip Long Island

sáb. 9/20

5:05 pm-9:29 am

1 stop16h 24m

$206

IslipPittsburgh

ISP - PIT

ISPPIT

Islip Long Island

jue. 11/6

11:40 am-7:11 pm

2 stops7h 31m

$264

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/14

Showing 1-10 of 17 results
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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 to Pittsburgh?

Currently, August is the cheapest month in which you can book a flight from Islip to Pittsburgh (average of $262). Flying from Islip to Pittsburgh in November is currently the most expensive (average of $333). 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 septiembre 15, 2025.

When flying from Islip to Pittsburgh, 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 Islip to Pittsburgh?

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 septiembre 15, 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

Crew

8.6

Overall

8.0

Boarding

8.1

Entertainment

7.5

Comfort

8.0

Food

7.0

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

Overall

8.0

Boarding

8.1

Entertainment

7.5

Comfort

8.0

Food

7.0

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 to Pittsburgh?

    Airlines like Southwest fly from Islip to Pittsburgh in about 9h 55m. The time it takes to get you to your destination can typically vary by up to . There are 375 mi between Islip and Pittsburgh.

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

    According to our current data, Southwest ($183), offers the cheapest pricing from Islip to Pittsburgh. Users have found that Southwest is 53% cheaper than the other options available to this destination.

  • 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 to Pittsburgh?

    Currently, August is the cheapest month in which you can book a flight from Islip to Pittsburgh (average of $262). Flying from Islip to Pittsburgh in November is currently the most expensive (average of $333). 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 septiembre 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
SouthwestCheapest$183Average$336FlexibilityNo cancel feeOn-time63%

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