$112+ 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 8/28. Fares are subject to change and may not be available on all flights or dates of travel.
ISP — PIT
Jul 11 — Jul 181
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 June 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 June 11, 2026.
This Southwest deal was found by Cheapflights users on 6/8. 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 9/114:05 pm
ISP
- PIT
1 stop5h 45m
Southwest
Mon 9/145:35 am
PIT
- ISP
1 stop4h 05m
Southwest
Deal found 6/8![Southwest logo]()
$209
This Southwest deal was found by Cheapflights users on 6/8. 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.
Thu 9/2412:35 pm
ISP
- PIT
1 stop5h 05m
Southwest
Sun 9/276:35 am
PIT
- ISP
1 stop3h 20m
Southwest
Deal found 6/8![Southwest logo]()
$219
This Southwest deal was found by Cheapflights users on 6/6. 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 7/235:50 pm
ISP
- PIT
1 stop5h 45m
Southwest
Mon 7/274:45 pm
PIT
- ISP
1 stop7h 00m
Southwest
Deal found 6/6![Southwest logo]()
$243
This Southwest deal was found by Cheapflights users on 6/7. 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 7/42:30 pm
ISP
- PIT
1 stop5h 35m
Southwest
Tue 7/712:45 pm
PIT
- ISP
1 stop3h 15m
Southwest
Deal found 6/7![Southwest logo]()
$254
This Gotogate deal was found by Cheapflights users on 6/7. 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 Gotogate 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
Sun 6/287:09 pm
PIT
- ISP
1 stop25h 48m
Frontier
Deal found 6/7![Frontier logo]()
$300
This Booking.com deal was found by Cheapflights users on 6/6. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/1110:43 am
ISP
- PIT
1 stop7h 32m
Frontier
Sun 7/197:13 pm
PIT
- ISP
1 stop14h 40m
Frontier
Deal found 6/6![Frontier logo]()
$302
This Southwest deal was found by Cheapflights users on 6/9. 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.
Sat 9/2611:55 am
ISP
- PIT
2 stops8h 45m
Southwest
Sun 9/276:00 am
PIT
- ISP
1 stop6h 05m
Southwest
Deal found 6/9![Southwest logo]()
$305
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 June 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 June 11, 2026.
This Southwest deal was found by Cheapflights users on 6/8. 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 9/1112:35 pm
ISP
- PIT
2 stops9h 15m
Southwest
Mon 9/145:35 am
PIT
- ISP
1 stop4h 05m
Southwest
Deal found 6/8![Southwest logo]()
$215
This Southwest deal was found by Cheapflights users on 6/8. 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.
Thu 9/2412:35 pm
ISP
- PIT
1 stop5h 05m
Southwest
Sun 9/276:35 am
PIT
- ISP
1 stop3h 20m
Southwest
Deal found 6/8![Southwest logo]()
$219
This Southwest deal was found by Cheapflights users on 6/6. 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 7/235:50 pm
ISP
- PIT
1 stop5h 45m
Southwest
Mon 7/274:45 pm
PIT
- ISP
1 stop7h 00m
Southwest
Deal found 6/6![Southwest logo]()
$243
This Southwest deal was found by Cheapflights users on 6/7. 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 7/49:05 am
ISP
- PIT
2 stops9h 00m
Southwest
Tue 7/712:45 pm
PIT
- ISP
1 stop3h 15m
Southwest
Deal found 6/7![Southwest logo]()
$259
This Southwest deal was found by Cheapflights users on 6/9. 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.
Sat 9/2611:55 am
ISP
- PIT
2 stops8h 45m
Southwest
Sun 9/276:00 am
PIT
- ISP
1 stop6h 05m
Southwest
Deal found 6/9![Southwest logo]()
$305
This Southwest deal was found by Cheapflights users on 6/10. 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.
Fri 7/35:50 pm
ISP
- PIT
1 stop5h 40m
Southwest
Mon 7/65:50 pm
PIT
- ISP
1 stop5h 50m
Southwest
Deal found 6/10![Southwest logo]()
$331
This Southwest deal was found by Cheapflights users on 6/10. 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.
Fri 10/910:20 am
ISP
- PIT
1 stop9h 00m
Southwest
Sun 10/115:10 pm
PIT
- ISP
1 stop6h 25m
Southwest
Deal found 6/10![Southwest logo]()
$349
This Southwest deal was found by Cheapflights users on 6/6. 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 9/110:30 am
ISP
- PIT
1 stop7h 40m
Southwest
Fri 9/41:45 pm
PIT
- ISP
2 stops8h 20m
Southwest
Deal found 6/6![Southwest logo]()
$356
Last-minute flights from Islip to PittsburghDiscover last-minute flight deals from Islip to Pittsburgh. Data last updated June 11, 2026 and is based on user searches.
Discover last-minute flight deals from Islip to Pittsburgh. Data last updated June 11, 2026 and is based on user searches.
This Gotogate deal was found by Cheapflights users on 6/7. 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 Gotogate 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
Sun 6/287:09 pm
PIT
- ISP
1 stop25h 48m
Frontier
Deal found 6/7![Frontier logo]()
$300
This Southwest deal was found by Cheapflights users on 6/10. 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.
Fri 7/35:50 pm
ISP
- PIT
1 stop5h 40m
Southwest
Mon 7/65:50 pm
PIT
- ISP
1 stop5h 50m
Southwest
Deal found 6/10![Southwest logo]()
$331
This Southwest deal was found by Cheapflights users on 6/7. 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 7/42:30 pm
ISP
- PIT
1 stop5h 35m
Southwest
Tue 7/712:45 pm
PIT
- ISP
1 stop3h 15m
Southwest
Deal found 6/7![Southwest logo]()
$254
This Southwest deal was found by Cheapflights users on 6/10. 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.
Sun 7/56:45 am
ISP
- PIT
1 stop6h 45m
Southwest
Sat 7/115:25 pm
PIT
- ISP
1 stop5h 50m
Southwest
Deal found 6/10![Southwest logo]()
$360
This Booking.com deal was found by Cheapflights users on 6/6. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/1110:43 am
ISP
- PIT
1 stop7h 32m
Frontier
Sun 7/197:13 pm
PIT
- ISP
1 stop14h 40m
Frontier
Deal found 6/6![Frontier logo]()
$302
This Southwest deal was found by Cheapflights users on 6/6. 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 7/235:50 pm
ISP
- PIT
1 stop5h 45m
Southwest
Mon 7/274:45 pm
PIT
- ISP
1 stop7h 00m
Southwest
Deal found 6/6![Southwest logo]()
$243
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 June 11, 2026.
Search for one-way flight options from Islip to Pittsburgh. Find affordable one-way fares based on user searches. Data last updated June 11, 2026.
This Southwest deal was found by Cheapflights users on 6/9. 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 8/286:10 am
ISP
- PIT
1 stop6h 00m
Southwest
Deal found 6/9![Southwest logo]()
$112
This Southwest deal was found by Cheapflights users on 6/9. 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 7/245:50 pm
ISP
- PIT
1 stop5h 45m
Southwest
Deal found 6/9![Southwest logo]()
$122
This Southwest deal was found by Cheapflights users on 6/9. 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 7/173:05 pm
ISP
- PIT
2 stops9h 50m
Southwest
Deal found 6/9![Southwest logo]()
$127
This Trip.com deal was found by Cheapflights users on 6/8. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/249:52 pm
ISP
- PIT
1 stop20h 22m
Frontier
Deal found 6/8![Frontier logo]()
$145
This Southwest deal was found by Cheapflights users on 6/10. 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.
Fri 10/910:20 am
ISP
- PIT
1 stop9h 00m
Southwest
Deal found 6/10![Southwest logo]()
$161
This Frontier deal was found by Cheapflights users on 6/6. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/1810:43 am
ISP
- PIT
1 stop7h 32m
Frontier
Deal found 6/6![Frontier logo]()
$179
This Southwest deal was found by Cheapflights users on 6/8. 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.
Wed 6/246:00 am
ISP
- PIT
2 stops8h 00m
Southwest
Deal found 6/8![Southwest logo]()
$204
This JetBlue deal was found by Cheapflights users on 6/9. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/235:00 pm
ISP
- PIT
1 stop6h 57m
JetBlue
Deal found 6/9![JetBlue logo]()
$207
This Southwest deal was found by Cheapflights users on 6/10. 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.
Mon 7/205:20 am
ISP
- PIT
1 stop7h 45m
Southwest
Deal found 6/10![Southwest logo]()
$209
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 June 11, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $209 (Southwest) |
One-way from | $112 (Southwest) |
Popular in | March |
Cheapest in | September |
Average price | $276 |
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 June 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 9/11
12:35 pm-9:50 pm
2 stops9h 15m
Pittsburgh
Mon 9/14
5:35 am-9:40 am
1 stop4h 05m
$215
Quickest round-trip
IslipPittsburgh
ISP - PIT
ISPPIT
Islip Long Island
Thu 9/24
12:35 pm-5:40 pm
1 stop5h 05m
Pittsburgh
Sun 9/27
6:35 am-9:55 am
1 stop3h 20m
$219
IslipPittsburgh
ISP - PIT
ISPPIT
Islip Long Island
Thu 7/23
5:50 pm-11:35 pm
1 stop5h 45m
Pittsburgh
Mon 7/27
4:45 pm-11:45 pm
1 stop7h 00m
$243
IslipPittsburgh
ISP - PIT
ISPPIT
Islip Long Island
Sat 7/4
9:05 am-6:05 pm
2 stops9h 00m
Pittsburgh
Tue 7/7
12:45 pm-4:00 pm
1 stop3h 15m
$259
IslipPittsburgh
ISP - PIT
ISPPIT
Islip Long Island
Sat 9/26
11:55 am-8:40 pm
2 stops8h 45m
Pittsburgh
Sun 9/27
6:00 am-12:05 pm
1 stop6h 05m
$305
IslipPittsburgh
ISP - PIT
ISPPIT
Islip Long Island
Fri 7/3
5:50 pm-11:30 pm
1 stop5h 40m
Pittsburgh
Mon 7/6
5:50 pm-11:40 pm
1 stop5h 50m
$331
IslipPittsburgh
ISP - PIT
ISPPIT
Islip Long Island
Fri 10/9
10:20 am-7:20 pm
1 stop9h 00m
Pittsburgh
Sun 10/11
5:10 pm-11:35 pm
1 stop6h 25m
$349
IslipPittsburgh
ISP - PIT
ISPPIT
Islip Long Island
Tue 9/1
10:30 am-6:10 pm
1 stop7h 40m
Pittsburgh
Fri 9/4
1:45 pm-10:05 pm
2 stops8h 20m
$356
Cheapest one-way
IslipPittsburgh
ISP - PIT
ISPPIT
Islip Long Island
Fri 8/28
6:10 am-12:10 pm
1 stop6h 00m
$112
IslipPittsburgh
ISP - PIT
ISPPIT
Islip Long Island
Fri 7/24
5:50 pm-11:35 pm
1 stop5h 45m
$122
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 June.
| 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 June 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.
Food
7.0
Comfort
8.0
Entertainment
7.5
Crew
8.6
Boarding
8.1
Overall
7.9
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Food
7.0
Comfort
8.0
Entertainment
7.5
Crew
8.6
Boarding
8.1
Overall
7.9
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
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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Islip and Pittsburgh flights
Browse other Islip and Pittsburgh flight options. Last updated on June 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 June 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 June 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 June 11, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$183 | Average$325 | FlexibilityNo cancel fee | On-time63% |