$102+ 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 6/3. Fares are subject to change and may not be available on all flights or dates of travel.
ISP — PIT
May 17 — May 241
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 April 17, 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 April 17, 2026.
This Southwest deal was found by Cheapflights users on 4/14. 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 5/126:30 am
ISP
- PIT
1 stop5h 20m
Southwest
Tue 5/1910:50 am
PIT
- ISP
1 stop3h 00m
Southwest
Deal found 4/14![Southwest logo]()
$203
This Southwest deal was found by Cheapflights users on 4/15. 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.
Wed 5/139:00 am
ISP
- PIT
2 stops9h 15m
Southwest
Wed 5/206:40 am
PIT
- ISP
1 stop7h 10m
Southwest
Deal found 4/15![Southwest logo]()
$214
This Kiwi.com deal was found by Cheapflights users on 4/15. 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.
Fri 5/14:07 pm
ISP
- PIT
1 stop7h 14m
Multiple Airlines
Mon 5/46:00 am
PIT
- ISP
2 stops29h 00m
Multiple Airlines
Deal found 4/15![Multiple Airlines logo]()
$263
This Kiwi.com deal was found by Cheapflights users on 4/12. 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 5/611:00 am
ISP
- PIT
1 stop8h 20m
Frontier
Fri 5/88:15 pm
PIT
- ISP
1 stop13h 50m
Frontier
Deal found 4/12![Frontier logo]()
$264
This Southwest deal was found by Cheapflights users on 4/15. 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.
Tue 5/194:10 pm
ISP
- PIT
1 stop6h 00m
Southwest
Fri 5/225:00 pm
PIT
- ISP
1 stop3h 25m
Southwest
Deal found 4/15![Southwest logo]()
$272
This Southwest deal was found by Cheapflights users on 4/15. 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.
Mon 8/106:10 am
ISP
- PIT
1 stop6h 00m
Southwest
Wed 8/126:10 am
PIT
- ISP
1 stop4h 05m
Southwest
Deal found 4/15![Southwest logo]()
$280
This Southwest deal was found by Cheapflights users on 4/16. 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 5/166:00 am
ISP
- PIT
1 stop5h 30m
Southwest
Sat 5/234:55 pm
PIT
- ISP
1 stop6h 25m
Southwest
Deal found 4/16![Southwest logo]()
$282
This Kiwi.com deal was found by Cheapflights users on 4/14. 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.
Sat 6/611:00 am
ISP
- PIT
1 stop8h 20m
Frontier
Sun 6/78:15 pm
PIT
- ISP
1 stop13h 50m
Frontier
Deal found 4/14![Frontier logo]()
$283
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 April 17, 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 April 17, 2026.
This Southwest deal was found by Cheapflights users on 4/15. 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.
Wed 5/1312:30 pm
ISP
- PIT
1 stop4h 50m
Southwest
Wed 5/206:40 am
PIT
- ISP
1 stop7h 10m
Southwest
Deal found 4/15![Southwest logo]()
$208
This Southwest deal was found by Cheapflights users on 4/14. 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 5/1212:30 pm
ISP
- PIT
2 stops8h 15m
Southwest
Tue 5/195:55 am
PIT
- ISP
2 stops7h 55m
Southwest
Deal found 4/14![Southwest logo]()
$213
This Southwest deal was found by Cheapflights users on 4/15. 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.
Mon 8/106:10 am
ISP
- PIT
1 stop6h 00m
Southwest
Wed 8/126:10 am
PIT
- ISP
1 stop4h 05m
Southwest
Deal found 4/15![Southwest logo]()
$280
This Southwest deal was found by Cheapflights users on 4/16. 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 5/169:20 am
ISP
- PIT
2 stops9h 00m
Southwest
Sat 5/234:00 pm
PIT
- ISP
2 stops7h 20m
Southwest
Deal found 4/16![Southwest logo]()
$300
This Southwest deal was found by Cheapflights users on 4/13. 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 6/63:30 pm
ISP
- PIT
1 stop7h 05m
Southwest
Sun 6/73:55 pm
PIT
- ISP
2 stops7h 40m
Southwest
Deal found 4/13![Southwest logo]()
$305
This Southwest deal was found by Cheapflights users on 4/15. 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.
Tue 5/199:00 am
ISP
- PIT
2 stops8h 55m
Southwest
Fri 5/222:45 pm
PIT
- ISP
2 stops8h 45m
Southwest
Deal found 4/15![Southwest logo]()
$320
This Southwest deal was found by Cheapflights users on 4/13. 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 6/225:20 am
ISP
- PIT
1 stop10h 40m
Southwest
Mon 6/225:50 pm
PIT
- ISP
1 stop5h 45m
Southwest
Deal found 4/13![Southwest logo]()
$354
This Southwest deal was found by Cheapflights users on 4/12. 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 5/69:00 am
ISP
- PIT
2 stops9h 15m
Southwest
Fri 5/810:35 am
PIT
- ISP
2 stops9h 50m
Southwest
Deal found 4/12![Southwest logo]()
$354
This Southwest deal was found by Cheapflights users on 4/13. 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.
Wed 4/296:30 am
ISP
- PIT
1 stop5h 20m
Southwest
Sun 5/35:00 am
PIT
- ISP
1 stop6h 10m
Southwest
Deal found 4/13![Southwest logo]()
$377
This Southwest deal was found by Cheapflights users on 4/16. 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 5/16:50 am
ISP
- PIT
1 stop8h 20m
Southwest
Tue 5/510:50 am
PIT
- ISP
1 stop3h 00m
Southwest
Deal found 4/16![Southwest logo]()
$379
Last-minute flights from Islip to PittsburghDiscover last-minute flight deals from Islip to Pittsburgh. Data last updated April 17, 2026 and is based on user searches.
Discover last-minute flight deals from Islip to Pittsburgh. Data last updated April 17, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 4/15. 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.
Fri 5/14:07 pm
ISP
- PIT
1 stop7h 14m
Multiple Airlines
Mon 5/46:00 am
PIT
- ISP
2 stops29h 00m
Multiple Airlines
Deal found 4/15![Multiple Airlines logo]()
$263
This Kiwi.com deal was found by Cheapflights users on 4/12. 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 5/611:00 am
ISP
- PIT
1 stop8h 20m
Frontier
Fri 5/88:15 pm
PIT
- ISP
1 stop13h 50m
Frontier
Deal found 4/12![Frontier logo]()
$264
This Southwest deal was found by Cheapflights users on 4/12. 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 5/612:30 pm
ISP
- PIT
1 stop4h 50m
Southwest
Fri 5/82:45 pm
PIT
- ISP
2 stops8h 45m
Southwest
Deal found 4/12![Southwest logo]()
$295
This Southwest deal was found by Cheapflights users on 4/14. 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 5/126:30 am
ISP
- PIT
1 stop5h 20m
Southwest
Tue 5/1910:50 am
PIT
- ISP
1 stop3h 00m
Southwest
Deal found 4/14![Southwest logo]()
$203
This Southwest deal was found by Cheapflights users on 4/15. 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.
Wed 5/139:00 am
ISP
- PIT
2 stops9h 15m
Southwest
Wed 5/206:40 am
PIT
- ISP
1 stop7h 10m
Southwest
Deal found 4/15![Southwest logo]()
$214
This Southwest deal was found by Cheapflights users on 4/16. 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 5/166:00 am
ISP
- PIT
1 stop5h 30m
Southwest
Sat 5/234:55 pm
PIT
- ISP
1 stop6h 25m
Southwest
Deal found 4/16![Southwest logo]()
$282
This Southwest deal was found by Cheapflights users on 4/15. 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.
Tue 5/194:10 pm
ISP
- PIT
1 stop6h 00m
Southwest
Fri 5/225:00 pm
PIT
- ISP
1 stop3h 25m
Southwest
Deal found 4/15![Southwest logo]()
$272
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 April 17, 2026.
Search for one-way flight options from Islip to Pittsburgh. Find affordable one-way fares based on user searches. Data last updated April 17, 2026.
This Southwest deal was found by Cheapflights users on 4/13. 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.
Wed 6/36:30 am
ISP
- PIT
1 stop5h 20m
Southwest
Deal found 4/13![Southwest logo]()
$102
This Frontier deal was found by Cheapflights users on 4/14. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/2210:48 am
ISP
- PIT
1 stop7h 26m
Frontier
Deal found 4/14![Frontier logo]()
$135
This Kiwi.com deal was found by Cheapflights users on 4/12. 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 4/2211:50 am
ISP
- PIT
1 stop6h 09m
Breeze Airways
Deal found 4/12![Breeze Airways logo]()
$168
This Southwest deal was found by Cheapflights users on 4/12. 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.
Sat 7/183:30 pm
ISP
- PIT
1 stop7h 05m
Southwest
Deal found 4/12![Southwest logo]()
$179
This Kiwi.com deal was found by Cheapflights users on 4/13. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/311:57 am
ISP
- PIT
3 stops34h 29m
Multiple Airlines
Deal found 4/13![Multiple Airlines logo]()
$182
This Priceline deal was found by Cheapflights users on 4/12. 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.
Sun 7/1910:48 am
ISP
- PIT
1 stop8h 16m
Frontier
Deal found 4/12![Frontier logo]()
$200
This Kiwi.com deal was found by Cheapflights users on 4/12. 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 4/2211:50 am
ISP
- PIT
3 stops34h 46m
Multiple Airlines
Deal found 4/12![Multiple Airlines logo]()
$203
This Southwest deal was found by Cheapflights users on 4/12. 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.
Sun 7/192:55 pm
ISP
- PIT
2 stops9h 25m
Southwest
Deal found 4/12![Southwest logo]()
$214
This Kiwi.com deal was found by Cheapflights users on 4/14. 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.
Mon 6/227:50 pm
ISP
- PIT
2 stops20h 38m
Multiple Airlines
Deal found 4/14![Multiple Airlines logo]()
$224
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 April 17, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $203 (Southwest) |
One-way from | $102 (Southwest) |
Popular in | March |
Cheapest in | September |
Average price | $227 |
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 April 17, 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
Wed 5/13
12:30 pm-5:20 pm
1 stop4h 50m
Pittsburgh
Wed 5/20
6:40 am-1:50 pm
1 stop7h 10m
$208
IslipPittsburgh
ISP - PIT
ISPPIT
Islip Long Island
Tue 5/12
12:30 pm-8:45 pm
2 stops8h 15m
Pittsburgh
Tue 5/19
5:55 am-1:50 pm
2 stops7h 55m
$213
Quickest round-trip
IslipPittsburgh
ISP - PIT
ISPPIT
Islip Long Island
Mon 8/10
6:10 am-12:10 pm
1 stop6h 00m
Pittsburgh
Wed 8/12
6:10 am-10:15 am
1 stop4h 05m
$280
IslipPittsburgh
ISP - PIT
ISPPIT
Islip Long Island
Sat 5/16
9:20 am-6:20 pm
2 stops9h 00m
Pittsburgh
Sat 5/23
4:00 pm-11:20 pm
2 stops7h 20m
$300
IslipPittsburgh
ISP - PIT
ISPPIT
Islip Long Island
Sat 6/6
3:30 pm-10:35 pm
1 stop7h 05m
Pittsburgh
Sun 6/7
3:55 pm-11:35 pm
2 stops7h 40m
$305
IslipPittsburgh
ISP - PIT
ISPPIT
Islip Long Island
Tue 5/19
9:00 am-5:55 pm
2 stops8h 55m
Pittsburgh
Fri 5/22
2:45 pm-11:30 pm
2 stops8h 45m
$320
IslipPittsburgh
ISP - PIT
ISPPIT
Islip Long Island
Mon 6/22
5:20 am-4:00 pm
1 stop10h 40m
Pittsburgh
Mon 6/22
5:50 pm-11:35 pm
1 stop5h 45m
$354
IslipPittsburgh
ISP - PIT
ISPPIT
Islip Long Island
Wed 5/6
9:00 am-6:15 pm
2 stops9h 15m
Pittsburgh
Fri 5/8
10:35 am-8:25 pm
2 stops9h 50m
$354
IslipPittsburgh
ISP - PIT
ISPPIT
Islip Long Island
Wed 4/29
6:30 am-11:50 am
1 stop5h 20m
Pittsburgh
Sun 5/3
5:00 am-11:10 am
1 stop6h 10m
$377
IslipPittsburgh
ISP - PIT
ISPPIT
Islip Long Island
Fri 5/1
6:50 am-3:10 pm
1 stop8h 20m
Pittsburgh
Tue 5/5
10:50 am-1:50 pm
1 stop3h 00m
$379
Showing 1-10 of 20 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 April.
| 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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