$116+ Cheap flights from Islip, NY 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 10/6. Fares are subject to change and may not be available on all flights or dates of travel.
ISP — PIT
Oct 16 — Oct 231
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
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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 September 16, 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 September 16, 2026.
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.
Mon 10/126:00 am -
1 stop5h 45m
Mon 10/196:00 pm -
1 stop5h 40m
Deal found 9/14![Southwest logo]()
$289
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.
Sat 10/176:15 am -
1 stop5h 50m
Mon 10/196:00 pm -
1 stop5h 40m
Deal found 9/13![Southwest logo]()
$307
This Southwest deal was found by Cheapflights users on 9/11. 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 -
1 stop8h 25m
Fri 10/166:00 pm -
1 stop5h 40m
Deal found 9/11![Southwest logo]()
$357
This Southwest deal was found by Cheapflights users on 9/11. 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 9/262:00 pm -
1 stop6h 45m
Wed 9/306:10 am -
1 stop4h 05m
Deal found 9/11![Southwest logo]()
$379
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.
Tue 9/2912:55 pm -
2 stops8h 40m
Sat 10/31:05 pm -
2 stops8h 40m
Deal found 9/14![Southwest logo]()
$389
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 September 16, 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 September 16, 2026.
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.
Mon 10/126:00 am -
1 stop5h 45m
Mon 10/196:00 pm -
1 stop5h 40m
Deal found 9/14![Southwest logo]()
$289
This FlightHub deal was found by Cheapflights users on 9/11. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/157:45 pm -
2 stops18h 32m
Fri 10/168:54 pm -
1 stop14h 26m
Deal found 9/11![Breeze Airways logo]()
$560
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.
Sat 10/176:15 am -
1 stop5h 50m
Mon 10/196:00 pm -
1 stop5h 40m
Deal found 9/13![Southwest logo]()
$307
This Southwest deal was found by Cheapflights users on 9/11. 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 -
1 stop8h 25m
Fri 10/166:00 pm -
1 stop5h 40m
Deal found 9/11![Southwest logo]()
$357
This Southwest deal was found by Cheapflights users on 9/11. 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 9/262:00 pm -
1 stop6h 45m
Wed 9/306:10 am -
1 stop4h 05m
Deal found 9/11![Southwest logo]()
$379
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.
Mon 9/281:15 pm -
2 stops10h 00m
Fri 10/22:15 pm -
2 stops9h 20m
Deal found 9/13![Southwest logo]()
$419
Last-minute flights from Islip to PittsburghDiscover last-minute flight deals from Islip to Pittsburgh. Data last updated September 16, 2026 and is based on user searches.
Discover last-minute flight deals from Islip to Pittsburgh. Data last updated September 16, 2026 and is based on user searches.
This Southwest deal was found by Cheapflights users on 9/11. 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 9/262:00 pm -
1 stop6h 45m
Wed 9/306:10 am -
1 stop4h 05m
Deal found 9/11![Southwest logo]()
$379
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.
Tue 9/2912:55 pm -
2 stops8h 40m
Sat 10/31:05 pm -
2 stops8h 40m
Deal found 9/14![Southwest logo]()
$389
This Southwest deal was found by Cheapflights users on 9/11. 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 -
1 stop8h 25m
Fri 10/166:00 pm -
1 stop5h 40m
Deal found 9/11![Southwest logo]()
$357
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.
Mon 10/126:00 am -
1 stop5h 45m
Mon 10/196:00 pm -
1 stop5h 40m
Deal found 9/14![Southwest logo]()
$289
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.
Sat 10/176:15 am -
1 stop5h 50m
Mon 10/196:00 pm -
1 stop5h 40m
Deal found 9/13![Southwest logo]()
$307
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 September 16, 2026.
Search for one-way flight options from Islip to Pittsburgh. Find affordable one-way fares based on user searches. Data last updated September 16, 2026.
This CheapOair deal was found by Cheapflights users on 9/11. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/65:43 pm -
1 stop20h 04m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/11![Frontier logo]()
$116
This Southwest deal was found by Cheapflights users on 9/11. 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 10/69:40 am -
2 stops8h 55m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/11![Southwest logo]()
$176
This Trip.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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/235:43 pm -
1 stop20h 04m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/15![Frontier logo]()
$221
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.
Wed 9/2312:00 pm -
2 stops25h 47m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/15![Multiple Airlines logo]()
$288
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.
Tue 9/2212:00 pm -
2 stops25h 47m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/15![Multiple Airlines logo]()
$291
This KAYAK 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/87:45 pm -
1 stop23h 50m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/13![Breeze Airways logo]()
$305
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.
Wed 9/2312:00 pm -
3 stops24h 04m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/15![Breeze Airways logo]()
$313
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.
Thu 9/247:45 pm -
1 stop17h 00m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/15![Breeze Airways logo]()
$316
This KAYAK 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/313:43 pm -
1 stop19h 47m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/15![Breeze Airways logo]()
$336
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.
Mon 9/2111:52 am -
1 stop8h 07m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/15![Breeze Airways logo]()
$360
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.
Mon 9/2111:52 am -
2 stops49h 55m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/15![Multiple Airlines logo]()
$362
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 September 16, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $289 (Southwest) |
One-way from | $116 (CheapOair) |
Popular in | August |
Cheapest in | January |
Average price | $259 |
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 7,457,451 searches. Data last updated September 16, 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 Islip Long Island - PIT Pittsburgh
ISPPIT
Islip Long Island
Tue 10/6
5:43 pm-1:47 pm
1 stop20h 04m
Pittsburgh
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$116
IslipPittsburgh
ISP Islip Long Island - PIT Pittsburgh
ISPPIT
Islip Long Island
Tue 10/6
9:40 am-6:35 pm
2 stops8h 55m
Pittsburgh
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$176
IslipPittsburgh
ISP Islip Long Island - PIT Pittsburgh
ISPPIT
Islip Long Island
Mon 10/12
6:00 am-11:45 am
1 stop5h 45m
Pittsburgh
Mon 10/19
6:00 pm-11:40 pm
1 stop5h 40m
$289
IslipPittsburgh
ISP Islip Long Island - PIT Pittsburgh
ISPPIT
Islip Long Island
Sun 11/8
7:45 pm-7:35 pm
1 stop23h 50m
Pittsburgh
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$305
IslipPittsburgh
ISP Islip Long Island - PIT Pittsburgh
ISPPIT
Islip Long Island
Sat 10/17
6:15 am-12:05 pm
1 stop5h 50m
Pittsburgh
Mon 10/19
6:00 pm-11:40 pm
1 stop5h 40m
$307
IslipPittsburgh
ISP Islip Long Island - PIT Pittsburgh
ISPPIT
Islip Long Island
Wed 9/23
12:00 pm-12:04 pm
3 stops24h 04m
Pittsburgh
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$313
IslipPittsburgh
ISP Islip Long Island - PIT Pittsburgh
ISPPIT
Islip Long Island
Fri 10/9
3:10 pm-11:35 pm
1 stop8h 25m
Pittsburgh
Fri 10/16
6:00 pm-11:40 pm
1 stop5h 40m
$357
IslipPittsburgh
ISP Islip Long Island - PIT Pittsburgh
ISPPIT
Islip Long Island
Mon 9/21
11:52 am-1:47 pm
2 stops49h 55m
Pittsburgh
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$362
Quickest round-trip
IslipPittsburgh
ISP Islip Long Island - PIT Pittsburgh
ISPPIT
Islip Long Island
Fri 9/25
11:08 am-5:30 pm
1 stop6h 22m
Pittsburgh
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$376
IslipPittsburgh
ISP Islip Long Island - PIT Pittsburgh
ISPPIT
Islip Long Island
Sat 9/26
2:00 pm-8:45 pm
1 stop6h 45m
Pittsburgh
Wed 9/30
6:10 am-10:15 am
1 stop4h 05m
$379
Showing 1-10 of 14 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 September.
| 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 September 16, 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.
Overall
8.0
Boarding
8.1
Food
7.0
Crew
8.6
Entertainment
7.5
Comfort
8.0
Reviews
1 / 20
4.0
OkaySteven,Sep 2026
OGG - HNL
Overall
8.0
Boarding
8.1
Food
7.0
Crew
8.6
Entertainment
7.5
Comfort
8.0
Reviews
1 / 20
4.0
OkaySteven,Sep 2026
OGG - HNL
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
Chester
Mars
Wexford
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Islip and Pittsburgh flights
Browse other Islip and Pittsburgh flight options. Last updated on September 16, 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 September 16, 2026.
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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 7,457,451 searches. Data last updated September 16, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$240 | Average$325 | FlexibilityNo cancel fee | On-time63% |