$105+ 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 5/27. Fares are subject to change and may not be available on all flights or dates of travel.
ISP — PIT
Jun 13 — Jun 201
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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Best
Last-minute
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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 May 14, 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 May 14, 2026.
This Southwest deal was found by Cheapflights users on 5/11. 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 6/96:00 am
ISP
- PIT
1 stop6h 05m
Southwest
Wed 6/1012:45 pm
PIT
- ISP
1 stop3h 15m
Southwest
Deal found 5/11![Southwest logo]()
$303
This Southwest deal was found by Cheapflights users on 5/9. 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 6/126:00 am
ISP
- PIT
1 stop5h 45m
Southwest
Sun 6/145:30 am
PIT
- ISP
1 stop11h 10m
Southwest
Deal found 5/9![Southwest logo]()
$309
This Kiwi.com deal was found by Cheapflights users on 5/9. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/229:52 pm
ISP
- PIT
2 stops15h 03m
Multiple Airlines
Fri 6/267:09 pm
PIT
- ISP
1 stop25h 48m
Multiple Airlines
Deal found 5/9![Multiple Airlines logo]()
$321
This Southwest deal was found by Cheapflights users on 5/13. 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.
Fri 7/36:00 am
ISP
- PIT
1 stop5h 45m
Southwest
Sat 7/49:20 am
PIT
- ISP
2 stops11h 00m
Southwest
Deal found 5/13![Southwest logo]()
$324
This Southwest deal was found by Cheapflights users on 5/11. 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 7/243:05 pm
ISP
- PIT
2 stops9h 45m
Southwest
Sun 7/263:50 pm
PIT
- ISP
1 stop8h 25m
Southwest
Deal found 5/11![Southwest logo]()
$339
This Gotogate deal was found by Cheapflights users on 5/12. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/1311:00 am
ISP
- PIT
1 stop8h 20m
Frontier
Wed 5/208:05 pm
PIT
- ISP
1 stop14h 22m
Frontier
Deal found 5/12![Frontier logo]()
$340
This Southwest deal was found by Cheapflights users on 5/11. 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 5/264:10 pm
ISP
- PIT
1 stop6h 00m
Southwest
Sat 5/304:55 pm
PIT
- ISP
1 stop6h 25m
Southwest
Deal found 5/11![Southwest logo]()
$341
This Southwest deal was found by Cheapflights users on 5/12. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/113:05 pm
ISP
- PIT
2 stops9h 45m
Southwest
Wed 6/174:45 pm
PIT
- ISP
1 stop5h 50m
Southwest
Deal found 5/12![Southwest logo]()
$346
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 May 14, 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 May 14, 2026.
This Southwest deal was found by Cheapflights users on 5/9. 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 6/126:00 am
ISP
- PIT
1 stop5h 45m
Southwest
Sun 6/145:30 am
PIT
- ISP
1 stop11h 10m
Southwest
Deal found 5/9![Southwest logo]()
$309
This Kiwi.com deal was found by Cheapflights users on 5/9. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/229:52 pm
ISP
- PIT
2 stops15h 03m
Multiple Airlines
Fri 6/267:09 pm
PIT
- ISP
1 stop25h 48m
Multiple Airlines
Deal found 5/9![Multiple Airlines logo]()
$321
This Southwest deal was found by Cheapflights users on 5/13. 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.
Fri 7/36:00 am
ISP
- PIT
1 stop5h 45m
Southwest
Sat 7/49:20 am
PIT
- ISP
2 stops11h 00m
Southwest
Deal found 5/13![Southwest logo]()
$324
This Southwest deal was found by Cheapflights users on 5/11. 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 7/243:05 pm
ISP
- PIT
2 stops9h 45m
Southwest
Sun 7/263:50 pm
PIT
- ISP
1 stop8h 25m
Southwest
Deal found 5/11![Southwest logo]()
$339
This Southwest deal was found by Cheapflights users on 5/12. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/212:35 pm
ISP
- PIT
2 stops8h 10m
Southwest
Sun 10/45:10 pm
PIT
- ISP
1 stop6h 25m
Southwest
Deal found 5/12![Southwest logo]()
$362
This Southwest deal was found by Cheapflights users on 5/13. 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.
Thu 6/255:50 pm
ISP
- PIT
1 stop5h 40m
Southwest
Mon 6/298:45 am
PIT
- ISP
2 stops8h 30m
Southwest
Deal found 5/13![Southwest logo]()
$364
This Southwest deal was found by Cheapflights users on 5/11. 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 5/2612:30 pm
ISP
- PIT
2 stops8h 15m
Southwest
Sat 5/304:55 pm
PIT
- ISP
1 stop6h 25m
Southwest
Deal found 5/11![Southwest logo]()
$364
This Southwest deal was found by Cheapflights users on 5/11. 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 6/98:55 am
ISP
- PIT
2 stops10h 10m
Southwest
Wed 6/105:50 am
PIT
- ISP
2 stops7h 55m
Southwest
Deal found 5/11![Southwest logo]()
$369
This Southwest deal was found by Cheapflights users on 5/12. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/113:05 pm
ISP
- PIT
2 stops9h 45m
Southwest
Wed 6/175:30 am
PIT
- ISP
2 stops8h 15m
Southwest
Deal found 5/12![Southwest logo]()
$399
This Southwest deal was found by Cheapflights users on 5/11. 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.
Mon 5/258:35 am
ISP
- PIT
2 stops9h 35m
Southwest
Thu 5/285:00 pm
PIT
- ISP
1 stop3h 25m
Southwest
Deal found 5/11![Southwest logo]()
$405
Last-minute flights from Islip to PittsburghDiscover last-minute flight deals from Islip to Pittsburgh. Data last updated May 14, 2026 and is based on user searches.
Discover last-minute flight deals from Islip to Pittsburgh. Data last updated May 14, 2026 and is based on user searches.
This Gotogate deal was found by Cheapflights users on 5/12. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/1311:00 am
ISP
- PIT
1 stop8h 20m
Frontier
Wed 5/208:05 pm
PIT
- ISP
1 stop14h 22m
Frontier
Deal found 5/12![Frontier logo]()
$340
This Southwest deal was found by Cheapflights users on 5/11. 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 5/264:10 pm
ISP
- PIT
1 stop6h 00m
Southwest
Sat 5/304:55 pm
PIT
- ISP
1 stop6h 25m
Southwest
Deal found 5/11![Southwest logo]()
$341
This Southwest deal was found by Cheapflights users on 5/11. 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 6/96:00 am
ISP
- PIT
1 stop6h 05m
Southwest
Wed 6/1012:45 pm
PIT
- ISP
1 stop3h 15m
Southwest
Deal found 5/11![Southwest logo]()
$303
This Southwest deal was found by Cheapflights users on 5/12. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/113:05 pm
ISP
- PIT
2 stops9h 45m
Southwest
Wed 6/174:45 pm
PIT
- ISP
1 stop5h 50m
Southwest
Deal found 5/12![Southwest logo]()
$346
This Southwest deal was found by Cheapflights users on 5/9. 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 6/126:00 am
ISP
- PIT
1 stop5h 45m
Southwest
Sun 6/145:30 am
PIT
- ISP
1 stop11h 10m
Southwest
Deal found 5/9![Southwest logo]()
$309
This Kiwi.com deal was found by Cheapflights users on 5/9. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/229:52 pm
ISP
- PIT
2 stops15h 03m
Multiple Airlines
Fri 6/267:09 pm
PIT
- ISP
1 stop25h 48m
Multiple Airlines
Deal found 5/9![Multiple Airlines logo]()
$321
This Southwest deal was found by Cheapflights users on 5/13. 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.
Thu 6/253:05 pm
ISP
- PIT
2 stops9h 45m
Southwest
Mon 6/298:45 am
PIT
- ISP
2 stops8h 30m
Southwest
Deal found 5/13![Southwest logo]()
$387
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 May 14, 2026.
Search for one-way flight options from Islip to Pittsburgh. Find affordable one-way fares based on user searches. Data last updated May 14, 2026.
This Priceline deal was found by Cheapflights users on 5/12. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/2711:00 am
ISP
- PIT
1 stop8h 20m
Frontier
Deal found 5/12![Frontier logo]()
$105
This Priceline deal was found by Cheapflights users on 5/11. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/3110:48 am
ISP
- PIT
1 stop8h 16m
Frontier
Deal found 5/11![Frontier logo]()
$115
This Southwest deal was found by Cheapflights users on 5/13. 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.
Fri 6/125:50 pm
ISP
- PIT
1 stop5h 40m
Southwest
Deal found 5/13![Southwest logo]()
$156
This Southwest deal was found by Cheapflights users on 5/9. 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 7/12:55 pm
ISP
- PIT
1 stop4h 45m
Southwest
Deal found 5/9![Southwest logo]()
$171
This Southwest deal was found by Cheapflights users on 5/12. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/279:00 am
ISP
- PIT
2 stops9h 15m
Southwest
Deal found 5/12![Southwest logo]()
$176
This Southwest deal was found by Cheapflights users on 5/10. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/153:15 pm
ISP
- PIT
1 stop5h 30m
Southwest
Deal found 5/10![Southwest logo]()
$179
This Southwest deal was found by Cheapflights users on 5/12. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/41:15 pm
ISP
- PIT
2 stops8h 15m
Southwest
Deal found 5/12![Southwest logo]()
$184
This Frontier deal was found by Cheapflights users on 5/12. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/2410:48 am
ISP
- PIT
1 stop7h 27m
Frontier
Deal found 5/12![Frontier logo]()
$200
This Kiwi.com deal was found by Cheapflights users on 5/12. 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.
Fri 9/42:28 pm
ISP
- PIT
3 stops27h 24m
Breeze Airways
Deal found 5/12![Breeze Airways logo]()
$207
This Kiwi.com deal was found by Cheapflights users on 5/12. 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.
Wed 5/2711:57 am
ISP
- PIT
3 stops29h 10m
Breeze Airways
Deal found 5/12![Breeze Airways logo]()
$209
This Frontier deal was found by Cheapflights users on 5/9. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/2911:00 am
ISP
- PIT
1 stop8h 20m
Frontier
Deal found 5/9![Frontier logo]()
$210
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 May 14, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $303 (Southwest) |
One-way from | $105 (Priceline) |
Popular in | March |
Cheapest in | September |
Average price | $242 |
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 May 14, 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 6/12
6:00 am-11:45 am
1 stop5h 45m
Pittsburgh
Sun 6/14
5:30 am-4:40 pm
1 stop11h 10m
$309
IslipPittsburgh
ISP - PIT
ISPPIT
Islip Long Island
Mon 6/22
9:52 pm-12:55 pm
2 stops15h 03m
Pittsburgh
Fri 6/26
7:09 pm-8:57 pm
1 stop25h 48m
$321
IslipPittsburgh
ISP - PIT
ISPPIT
Islip Long Island
Fri 7/3
6:00 am-11:45 am
1 stop5h 45m
Pittsburgh
Sat 7/4
9:20 am-8:20 pm
2 stops11h 00m
$324
IslipPittsburgh
ISP - PIT
ISPPIT
Islip Long Island
Fri 7/24
3:05 pm-12:50 am
2 stops9h 45m
Pittsburgh
Sun 7/26
3:50 pm-12:15 am
1 stop8h 25m
$339
IslipPittsburgh
ISP - PIT
ISPPIT
Islip Long Island
Fri 10/2
12:35 pm-8:45 pm
2 stops8h 10m
Pittsburgh
Sun 10/4
5:10 pm-11:35 pm
1 stop6h 25m
$362
IslipPittsburgh
ISP - PIT
ISPPIT
Islip Long Island
Thu 6/25
5:50 pm-11:30 pm
1 stop5h 40m
Pittsburgh
Mon 6/29
8:45 am-5:15 pm
2 stops8h 30m
$364
IslipPittsburgh
ISP - PIT
ISPPIT
Islip Long Island
Tue 5/26
12:30 pm-8:45 pm
2 stops8h 15m
Pittsburgh
Sat 5/30
4:55 pm-11:20 pm
1 stop6h 25m
$364
IslipPittsburgh
ISP - PIT
ISPPIT
Islip Long Island
Tue 6/9
8:55 am-7:05 pm
2 stops10h 10m
Pittsburgh
Wed 6/10
5:50 am-1:45 pm
2 stops7h 55m
$369
IslipPittsburgh
ISP - PIT
ISPPIT
Islip Long Island
Thu 6/11
3:05 pm-12:50 am
2 stops9h 45m
Pittsburgh
Wed 6/17
5:30 am-1:45 pm
2 stops8h 15m
$399
Quickest round-trip
IslipPittsburgh
ISP - PIT
ISPPIT
Islip Long Island
Mon 5/25
8:35 am-6:10 pm
2 stops9h 35m
Pittsburgh
Thu 5/28
5:00 pm-8:25 pm
1 stop3h 25m
$405
Showing 1-10 of 19 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 May.
| 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.
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 locationsMars
Chester
Steubenville
Washington
Monroeville
Wexford
Belle Vernon
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