$99+ 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 8/13. Fares are subject to change and may not be available on all flights or dates of travel.
ISP — PIT
Aug 10 — Aug 171
Round-trip
1 adult, Economy
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Find cheap flights from Islip to Pittsburgh 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 Islip to Pittsburgh
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Cheapest flights from Islip to PittsburghExplore 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 July 11, 2026.
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 July 11, 2026.
This Southwest deal was found by Cheapflights users on 7/6. 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.
Thu 8/66:10 am
ISP
- PIT
1 stop6h 00m
Southwest
Mon 8/105:35 am
PIT
- ISP
1 stop4h 05m
Southwest
Deal found 7/6![Southwest logo]()
$166
This Southwest deal was found by Cheapflights users on 7/9. 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.
Thu 8/66:10 am
ISP
- PIT
1 stop6h 00m
Southwest
Thu 8/135:35 am
PIT
- ISP
1 stop4h 05m
Southwest
Deal found 7/9![Southwest logo]()
$173
This Southwest deal was found by Cheapflights users on 7/9. 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.
Thu 8/134:05 pm
ISP
- PIT
1 stop5h 45m
Southwest
Thu 8/275:35 am
PIT
- ISP
1 stop4h 05m
Southwest
Deal found 7/9![Southwest logo]()
$182
This Southwest deal was found by Cheapflights users on 7/7. 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 8/216:10 am
ISP
- PIT
1 stop6h 00m
Southwest
Mon 8/2411:20 am
PIT
- ISP
1 stop5h 05m
Southwest
Deal found 7/7![Southwest logo]()
$185
This Southwest deal was found by Cheapflights users on 7/7. 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.
Thu 8/134:05 pm
ISP
- PIT
1 stop5h 45m
Southwest
Mon 8/175:35 am
PIT
- ISP
1 stop4h 05m
Southwest
Deal found 7/7![Southwest logo]()
$186
This Southwest deal was found by Cheapflights users on 7/7. 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 8/2211:55 am
ISP
- PIT
2 stops8h 45m
Southwest
Tue 8/256:10 am
PIT
- ISP
1 stop4h 05m
Southwest
Deal found 7/7![Southwest logo]()
$188
This Southwest deal was found by Cheapflights users on 7/6. 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 9/156:05 am
ISP
- PIT
1 stop6h 00m
Southwest
Wed 9/166:10 am
PIT
- ISP
1 stop4h 05m
Southwest
Deal found 7/6![Southwest logo]()
$243
Best flights from Islip to PittsburghDiscover carefully curated flight deals from Islip to Pittsburgh that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 11, 2026.
Discover carefully curated flight deals from Islip to Pittsburgh that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 11, 2026.
This Southwest deal was found by Cheapflights users on 7/7. 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 8/216:10 am
ISP
- PIT
1 stop6h 00m
Southwest
Mon 8/2411:20 am
PIT
- ISP
1 stop5h 05m
Southwest
Deal found 7/7![Southwest logo]()
$185
This Southwest deal was found by Cheapflights users on 7/7. 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.
Thu 8/134:05 pm
ISP
- PIT
1 stop5h 45m
Southwest
Mon 8/175:35 am
PIT
- ISP
1 stop4h 05m
Southwest
Deal found 7/7![Southwest logo]()
$186
This Southwest deal was found by Cheapflights users on 7/7. 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 8/2211:55 am
ISP
- PIT
2 stops8h 45m
Southwest
Tue 8/256:10 am
PIT
- ISP
1 stop4h 05m
Southwest
Deal found 7/7![Southwest logo]()
$188
This Southwest deal was found by Cheapflights users on 7/6. 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 9/156:05 am
ISP
- PIT
1 stop6h 00m
Southwest
Wed 9/166:10 am
PIT
- ISP
1 stop4h 05m
Southwest
Deal found 7/6![Southwest logo]()
$243
This Southwest deal was found by Cheapflights users on 7/6. 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 8/1412:35 pm
ISP
- PIT
1 stop9h 15m
Southwest
Sun 8/166:00 am
PIT
- ISP
1 stop6h 05m
Southwest
Deal found 7/6![Southwest logo]()
$248
This Southwest deal was found by Cheapflights users on 7/9. 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.
Thu 8/61:15 pm
ISP
- PIT
2 stops9h 55m
Southwest
Thu 8/131:50 pm
PIT
- ISP
2 stops8h 15m
Southwest
Deal found 7/9![Southwest logo]()
$289
This Southwest deal was found by Cheapflights users on 7/9. 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.
Wed 8/56:05 am
ISP
- PIT
1 stop6h 00m
Southwest
Sat 8/83:30 pm
PIT
- ISP
1 stop5h 15m
Southwest
Deal found 7/9![Southwest logo]()
$326
This Southwest deal was found by Cheapflights users on 7/8. 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 10/93:10 pm
ISP
- PIT
1 stop3h 55m
Southwest
Sun 10/116:00 am
PIT
- ISP
1 stop4h 20m
Southwest
Deal found 7/8![Southwest logo]()
$330
Last-minute flights from Islip to PittsburghDiscover last-minute flight deals from Islip to Pittsburgh. Data last updated July 11, 2026 and is based on user searches.
Discover last-minute flight deals from Islip to Pittsburgh. Data last updated July 11, 2026 and is based on user searches.
This Southwest deal was found by Cheapflights users on 7/6. 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.
Thu 8/66:10 am
ISP
- PIT
1 stop6h 00m
Southwest
Mon 8/105:35 am
PIT
- ISP
1 stop4h 05m
Southwest
Deal found 7/6![Southwest logo]()
$166
This Southwest deal was found by Cheapflights users on 7/9. 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.
Thu 8/66:10 am
ISP
- PIT
1 stop6h 00m
Southwest
Thu 8/135:35 am
PIT
- ISP
1 stop4h 05m
Southwest
Deal found 7/9![Southwest logo]()
$173
This Southwest deal was found by Cheapflights users on 7/9. 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.
Thu 8/134:05 pm
ISP
- PIT
1 stop5h 45m
Southwest
Thu 8/275:35 am
PIT
- ISP
1 stop4h 05m
Southwest
Deal found 7/9![Southwest logo]()
$182
This Southwest deal was found by Cheapflights users on 7/7. 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.
Thu 8/134:05 pm
ISP
- PIT
1 stop5h 45m
Southwest
Mon 8/175:35 am
PIT
- ISP
1 stop4h 05m
Southwest
Deal found 7/7![Southwest logo]()
$186
This Southwest deal was found by Cheapflights users on 7/7. 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 8/216:10 am
ISP
- PIT
1 stop6h 00m
Southwest
Mon 8/2411:20 am
PIT
- ISP
1 stop5h 05m
Southwest
Deal found 7/7![Southwest logo]()
$185
This Southwest deal was found by Cheapflights users on 7/7. 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 8/2211:55 am
ISP
- PIT
2 stops8h 45m
Southwest
Tue 8/256:10 am
PIT
- ISP
1 stop4h 05m
Southwest
Deal found 7/7![Southwest logo]()
$188
One-way flights from Islip to PittsburghSearch for one-way flight options from Islip to Pittsburgh. Find affordable one-way fares based on user searches. Data last updated July 11, 2026.
Search for one-way flight options from Islip to Pittsburgh. Find affordable one-way fares based on user searches. Data last updated July 11, 2026.
This Southwest deal was found by Cheapflights users on 7/9. 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.
Thu 8/134:05 pm
ISP
- PIT
1 stop5h 45m
Southwest
Deal found 7/9![Southwest logo]()
$99
This Southwest deal was found by Cheapflights users on 7/9. 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 8/1412:35 pm
ISP
- PIT
1 stop9h 15m
Southwest
Deal found 7/9![Southwest logo]()
$108
This Southwest deal was found by Cheapflights users on 7/9. 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 8/71:15 pm
ISP
- PIT
2 stops9h 55m
Southwest
Deal found 7/9![Southwest logo]()
$117
This Southwest deal was found by Cheapflights users on 7/9. 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 8/175:00 pm
ISP
- PIT
1 stop6h 10m
Southwest
Deal found 7/9![Southwest logo]()
$122
This Expedia deal was found by Cheapflights users on 7/10. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/237:09 pm
ISP
- PIT
1 stop23h 06m
Frontier
Deal found 7/10![Frontier logo]()
$127
This Priceline deal was found by Cheapflights users on 7/9. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/710:57 am
ISP
- PIT
1 stop7h 18m
Frontier
Deal found 7/9![Frontier logo]()
$141
This Priceline deal was found by Cheapflights users on 7/7. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/2510:43 am
ISP
- PIT
1 stop7h 32m
Frontier
Deal found 7/7![Frontier logo]()
$144
This Priceline deal was found by Cheapflights users on 7/9. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/810:43 am
ISP
- PIT
1 stop7h 32m
Frontier
Deal found 7/9![Frontier logo]()
$171
This Frontier deal was found by Cheapflights users on 7/8. 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.
Mon 7/2010:57 am
ISP
- PIT
1 stop7h 18m
Frontier
Deal found 7/8![Frontier logo]()
$185
This Southwest deal was found by Cheapflights users on 7/6. 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 7/252:45 pm
ISP
- PIT
2 stops7h 55m
Southwest
Deal found 7/6![Southwest logo]()
$194
Find 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 July 11, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $166 (Southwest) |
One-way from | $99 (Southwest) |
Popular in | March |
Cheapest in | September |
Average price | $228 |
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 July 11, 2026.
Use the filters below to find and compare flights from Islip to Pittsburgh that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
IslipPittsburgh
ISP - PIT
ISPPIT
Islip Long Island
Fri 8/21
6:10 am-12:10 pm
1 stop6h 00m
Pittsburgh
Mon 8/24
11:20 am-4:25 pm
1 stop5h 05m
$185
IslipPittsburgh
ISP - PIT
ISPPIT
Islip Long Island
Thu 8/13
4:05 pm-9:50 pm
1 stop5h 45m
Pittsburgh
Mon 8/17
5:35 am-9:40 am
1 stop4h 05m
$186
IslipPittsburgh
ISP - PIT
ISPPIT
Islip Long Island
Sat 8/22
11:55 am-8:40 pm
2 stops8h 45m
Pittsburgh
Tue 8/25
6:10 am-10:15 am
1 stop4h 05m
$188
IslipPittsburgh
ISP - PIT
ISPPIT
Islip Long Island
Tue 9/15
6:05 am-12:05 pm
1 stop6h 00m
Pittsburgh
Wed 9/16
6:10 am-10:15 am
1 stop4h 05m
$243
IslipPittsburgh
ISP - PIT
ISPPIT
Islip Long Island
Fri 8/14
12:35 pm-9:50 pm
1 stop9h 15m
Pittsburgh
Sun 8/16
6:00 am-12:05 pm
1 stop6h 05m
$248
IslipPittsburgh
ISP - PIT
ISPPIT
Islip Long Island
Thu 8/6
1:15 pm-11:10 pm
2 stops9h 55m
Pittsburgh
Thu 8/13
1:50 pm-10:05 pm
2 stops8h 15m
$289
IslipPittsburgh
ISP - PIT
ISPPIT
Islip Long Island
Wed 8/5
6:05 am-12:05 pm
1 stop6h 00m
Pittsburgh
Sat 8/8
3:30 pm-8:45 pm
1 stop5h 15m
$326
Quickest round-trip
IslipPittsburgh
ISP - PIT
ISPPIT
Islip Long Island
Fri 10/9
3:10 pm-7:05 pm
1 stop3h 55m
Pittsburgh
Sun 10/11
6:00 am-10:20 am
1 stop4h 20m
$330
Cheapest one-way
Quickest one-way
IslipPittsburgh
ISP - PIT
ISPPIT
Islip Long Island
Thu 8/13
4:05 pm-9:50 pm
1 stop5h 45m
$99
IslipPittsburgh
ISP - PIT
ISPPIT
Islip Long Island
Fri 8/14
12:35 pm-9:50 pm
1 stop9h 15m
$108
Showing 1-10 of 18 resultsSorted by cheapest first
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 July.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Islip, New York-Pittsburgh flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Islip, New York-Pittsburgh flight deals on Cheapflights vs. FlightHub >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 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 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.
ISP-PIT
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.
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 July 11, 2026.
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.
Boarding
8.1
Food
7.0
Crew
8.6
Overall
7.9
Entertainment
7.5
Comfort
8.0
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Boarding
8.1
Food
7.0
Crew
8.6
Overall
7.9
Entertainment
7.5
Comfort
8.0
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
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.
Traveling to a place near Pittsburgh?
Book flights to Pittsburgh if you plan to visit one of these locationsMonroeville
Washington
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Islip and Pittsburgh flights
Browse other Islip and Pittsburgh flight options. Last updated on July 11, 2026.
Other flights from Islip
Browse through other flights departing from Islip. Flights are based on user searches made on Cheapflights and were last updated on July 11, 2026.
Other flights to Pittsburgh
Explore flights to Pittsburgh departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on July 11, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
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 July 11, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$183 | Average$325 | FlexibilityNo cancel fee | On-time63% |