$166+ 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 6/28. Fares are subject to change and may not be available on all flights or dates of travel.
ISP — PIT
Jun 30 — Jul 71
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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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 31, 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 31, 2026.
This Southwest deal was found by Cheapflights users on 5/28. 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 9/125:30 am
ISP
- PIT
2 stops8h 30m
Southwest
Mon 9/145:35 am
PIT
- ISP
1 stop4h 05m
Southwest
Deal found 5/28![Southwest logo]()
$200
This Southwest deal was found by Cheapflights users on 5/28. 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 7/152:55 pm
ISP
- PIT
1 stop7h 35m
Southwest
Fri 7/174:45 pm
PIT
- ISP
1 stop7h 00m
Southwest
Deal found 5/28![Southwest logo]()
$236
This Southwest deal was found by Cheapflights users on 5/27. 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 9/1012:35 pm
ISP
- PIT
1 stop5h 05m
Southwest
Mon 9/145:35 am
PIT
- ISP
1 stop4h 05m
Southwest
Deal found 5/27![Southwest logo]()
$239
This Southwest deal was found by Cheapflights users on 5/29. 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 8/75:00 pm
ISP
- PIT
1 stop6h 10m
Southwest
Mon 8/105:35 am
PIT
- ISP
1 stop4h 05m
Southwest
Deal found 5/29![Southwest logo]()
$241
This Southwest deal was found by Cheapflights users on 5/30. 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 7/96:00 pm
ISP
- PIT
1 stop5h 35m
Southwest
Mon 7/135:50 pm
PIT
- ISP
1 stop5h 50m
Southwest
Deal found 5/30![Southwest logo]()
$243
This Southwest deal was found by Cheapflights users on 5/28. 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 7/106:00 am
ISP
- PIT
2 stops8h 50m
Southwest
Sun 7/125:15 am
PIT
- ISP
1 stop11h 25m
Southwest
Deal found 5/28![Southwest logo]()
$254
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 31, 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 31, 2026.
This Southwest deal was found by Cheapflights users on 5/29. 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
Mon 8/101:45 pm
PIT
- ISP
2 stops8h 20m
Southwest
Deal found 5/29![Southwest logo]()
$251
This Southwest deal was found by Cheapflights users on 5/28. 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 7/158:55 am
ISP
- PIT
2 stops10h 10m
Southwest
Fri 7/174:45 pm
PIT
- ISP
1 stop7h 00m
Southwest
Deal found 5/28![Southwest logo]()
$297
This Southwest deal was found by Cheapflights users on 5/30. 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 6/263:05 pm
ISP
- PIT
2 stops9h 45m
Southwest
Mon 6/295:45 am
PIT
- ISP
1 stop6h 05m
Southwest
Deal found 5/30![Southwest logo]()
$335
This Southwest deal was found by Cheapflights users on 5/28. 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 6/213:30 pm
ISP
- PIT
1 stop8h 05m
Southwest
Tue 6/2312:45 pm
PIT
- ISP
1 stop3h 15m
Southwest
Deal found 5/28![Southwest logo]()
$348
This Southwest deal was found by Cheapflights users on 5/30. 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 stop7h 45m
Southwest
Mon 6/296:05 am
PIT
- ISP
2 stops8h 25m
Southwest
Deal found 5/30![Southwest logo]()
$356
This Southwest deal was found by Cheapflights users on 5/28. 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 7/106:00 am
ISP
- PIT
2 stops8h 50m
Southwest
Sun 7/123:50 pm
PIT
- ISP
2 stops7h 50m
Southwest
Deal found 5/28![Southwest logo]()
$361
This Southwest deal was found by Cheapflights users on 5/30. 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 7/99:10 am
ISP
- PIT
2 stops9h 05m
Southwest
Mon 7/135:10 am
PIT
- ISP
2 stops9h 20m
Southwest
Deal found 5/30![Southwest logo]()
$361
This Southwest deal was found by Cheapflights users on 5/29. 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 7/56:00 am
ISP
- PIT
1 stop5h 30m
Southwest
Tue 7/74:20 pm
PIT
- ISP
1 stop6h 20m
Southwest
Deal found 5/29![Southwest logo]()
$365
This Southwest deal was found by Cheapflights users on 5/26. 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 7/165:50 pm
ISP
- PIT
1 stop5h 45m
Southwest
Sun 7/193:50 pm
PIT
- ISP
2 stops7h 50m
Southwest
Deal found 5/26![Southwest logo]()
$365
Last-minute flights from Islip to PittsburghDiscover last-minute flight deals from Islip to Pittsburgh. Data last updated May 31, 2026 and is based on user searches.
Discover last-minute flight deals from Islip to Pittsburgh. Data last updated May 31, 2026 and is based on user searches.
This Booking.com deal was found by Cheapflights users on 5/28. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/111:00 am
ISP
- PIT
1 stop8h 20m
Frontier
Wed 6/38:15 pm
PIT
- ISP
1 stop13h 50m
Frontier
Deal found 5/28![Frontier logo]()
$424
This Booking.com deal was found by Cheapflights users on 5/31. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/119:52 pm
ISP
- PIT
1 stop20h 22m
Frontier
Sat 6/137:09 pm
PIT
- ISP
1 stop25h 48m
Frontier
Deal found 5/31![Frontier logo]()
$383
This Booking.com deal was found by Cheapflights users on 5/30. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/149:52 pm
ISP
- PIT
1 stop20h 22m
Frontier
Thu 6/187:09 pm
PIT
- ISP
1 stop25h 48m
Frontier
Deal found 5/30![Frontier logo]()
$398
This Southwest deal was found by Cheapflights users on 5/29. 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 6/183:05 pm
ISP
- PIT
1 stop8h 25m
Southwest
Mon 6/225:50 pm
PIT
- ISP
1 stop5h 45m
Southwest
Deal found 5/29![Southwest logo]()
$308
This Southwest deal was found by Cheapflights users on 5/28. 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 6/213:30 pm
ISP
- PIT
1 stop8h 05m
Southwest
Tue 6/2312:45 pm
PIT
- ISP
1 stop3h 15m
Southwest
Deal found 5/28![Southwest logo]()
$348
This Southwest deal was found by Cheapflights users on 5/29. 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 stop7h 45m
Southwest
Mon 6/2910:30 am
PIT
- ISP
1 stop4h 00m
Southwest
Deal found 5/29![Southwest logo]()
$351
This Booking.com deal was found by Cheapflights users on 5/30. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/269:52 pm
ISP
- PIT
1 stop20h 22m
Frontier
Mon 6/297:09 pm
PIT
- ISP
1 stop20h 47m
Frontier
Deal found 5/30![Frontier logo]()
$329
This Southwest deal was found by Cheapflights users on 5/30. 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 6/263:05 pm
ISP
- PIT
2 stops9h 45m
Southwest
Mon 6/295:45 am
PIT
- ISP
1 stop6h 05m
Southwest
Deal found 5/30![Southwest logo]()
$335
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 31, 2026.
Search for one-way flight options from Islip to Pittsburgh. Find affordable one-way fares based on user searches. Data last updated May 31, 2026.
This Trip.com deal was found by Cheapflights users on 5/27. 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.
Sun 6/289:52 pm
ISP
- PIT
1 stop20h 22m
Frontier
Deal found 5/27![Frontier logo]()
$166
This Southwest deal was found by Cheapflights users on 5/28. 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 6/155:50 pm
ISP
- PIT
1 stop5h 40m
Southwest
Deal found 5/28![Southwest logo]()
$171
This Frontier deal was found by Cheapflights users on 5/30. 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 8/1410:57 am
ISP
- PIT
1 stop7h 18m
Frontier
Deal found 5/30![Frontier logo]()
$179
This Frontier deal was found by Cheapflights users on 5/27. 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.
Thu 6/411:00 am
ISP
- PIT
1 stop8h 20m
Frontier
Deal found 5/27![Frontier logo]()
$185
This Southwest deal was found by Cheapflights users on 5/30. 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 8/155:30 am
ISP
- PIT
2 stops8h 30m
Southwest
Deal found 5/30![Southwest logo]()
$194
This Frontier deal was found by Cheapflights users on 5/31. 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.
Wed 6/311:00 am
ISP
- PIT
1 stop8h 20m
Frontier
Deal found 5/31![Frontier logo]()
$205
This JetBlue deal was found by Cheapflights users on 5/27. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/173:07 pm
ISP
- PIT
1 stop8h 50m
JetBlue
Deal found 5/27![JetBlue logo]()
$227
This Frontier deal was found by Cheapflights users on 5/30. 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.
Sun 6/711:00 am
ISP
- PIT
1 stop8h 20m
Frontier
Deal found 5/30![Frontier logo]()
$230
This Kiwi.com deal was found by Cheapflights users on 5/30. 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 6/66:09 pm
ISP
- PIT
3 stops29h 18m
Multiple Airlines
Deal found 5/30![Multiple Airlines logo]()
$248
This Southwest deal was found by Cheapflights users on 5/28. 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
1 stop4h 05m
Southwest
Deal found 5/28![Southwest logo]()
$256
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 31, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $236 (Southwest) |
One-way from | $166 (Trip.com) |
Popular in | March |
Cheapest in | September |
Average price | $251 |
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 31, 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 8/7
1:15 pm-11:10 pm
2 stops9h 55m
Pittsburgh
Mon 8/10
1:45 pm-10:05 pm
2 stops8h 20m
$251
IslipPittsburgh
ISP - PIT
ISPPIT
Islip Long Island
Wed 7/15
8:55 am-7:05 pm
2 stops10h 10m
Pittsburgh
Fri 7/17
4:45 pm-11:45 pm
1 stop7h 00m
$297
IslipPittsburgh
ISP - PIT
ISPPIT
Islip Long Island
Fri 6/26
3:05 pm-12:50 am
2 stops9h 45m
Pittsburgh
Mon 6/29
5:45 am-11:50 am
1 stop6h 05m
$335
Quickest round-trip
IslipPittsburgh
ISP - PIT
ISPPIT
Islip Long Island
Sun 6/21
3:30 pm-11:35 pm
1 stop8h 05m
Pittsburgh
Tue 6/23
12:45 pm-4:00 pm
1 stop3h 15m
$348
IslipPittsburgh
ISP - PIT
ISPPIT
Islip Long Island
Mon 6/22
5:20 am-1:05 pm
1 stop7h 45m
Pittsburgh
Mon 6/29
6:05 am-2:30 pm
2 stops8h 25m
$356
IslipPittsburgh
ISP - PIT
ISPPIT
Islip Long Island
Fri 7/10
6:00 am-2:50 pm
2 stops8h 50m
Pittsburgh
Sun 7/12
3:50 pm-11:40 pm
2 stops7h 50m
$361
IslipPittsburgh
ISP - PIT
ISPPIT
Islip Long Island
Thu 7/9
9:10 am-6:15 pm
2 stops9h 05m
Pittsburgh
Mon 7/13
5:10 am-2:30 pm
2 stops9h 20m
$361
IslipPittsburgh
ISP - PIT
ISPPIT
Islip Long Island
Sun 7/5
6:00 am-11:30 am
1 stop5h 30m
Pittsburgh
Tue 7/7
4:20 pm-10:40 pm
1 stop6h 20m
$365
IslipPittsburgh
ISP - PIT
ISPPIT
Islip Long Island
Thu 7/16
5:50 pm-11:35 pm
1 stop5h 45m
Pittsburgh
Sun 7/19
3:50 pm-11:40 pm
2 stops7h 50m
$365
Cheapest one-way
IslipPittsburgh
ISP - PIT
ISPPIT
Islip Long Island
Sun 6/28
9:52 pm-6:14 pm
1 stop20h 22m
$166
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 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
Washington
Steubenville
Monroeville
Wexford
Belle Vernon
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