$147+ Cheap flights from Islip, NY (ISP) to Sky Harbor Intl (PHX)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 12/15. Fares are subject to change and may not be available on all flights or dates of travel.
ISP — PHX
Nov 24 — Dec 11
Round-trip
1 adult, Economy
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Find cheap flights from Islip to Sky Harbor Intl 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 Sky Harbor Intl
Cheapest
Best
Last-minute
One-way
Cheapest flights from Islip to Sky Harbor IntlExplore the most affordable flight options available from Islip to Sky Harbor Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 25, 2026.
Explore the most affordable flight options available from Islip to Sky Harbor Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 25, 2026.
This Kiwi.com deal was found by Cheapflights users on 10/24. 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.
Sun 11/86:13 pm -
1 stop21h 00m
Thu 11/122:04 pm -
2 stops16h 55m
Deal found 10/24![Breeze Airways logo]()
$517
This Southwest deal was found by Cheapflights users on 10/21. 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 11/65:40 pm -
2 stops9h 30m
Tue 11/106:05 am -
1 stop8h 10m
Deal found 10/21![Southwest logo]()
$528
This Southwest deal was found by Cheapflights users on 10/23. 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 11/77:55 am -
1 stop9h 25m
Wed 11/116:05 am -
1 stop8h 10m
Deal found 10/23![Southwest logo]()
$637
This Mytrip deal was found by Cheapflights users on 10/23. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/78:30 pm -
3 stops29h 25m
Wed 11/117:21 pm -
2 stops20h 10m
Deal found 10/23![Multiple Airlines logo]()
$654
This Kiwi.com deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/296:13 pm -
1 stop21h 00m
Sun 11/19:59 pm -
2 stops35h 21m
Deal found 10/23![Multiple Airlines logo]()
$669
This Southwest deal was found by Cheapflights users on 10/24. 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 11/85:35 am -
1 stop12h 35m
Wed 11/1112:30 am -
1 stop10h 10m
Deal found 10/24![Southwest logo]()
$687
This Mytrip deal was found by Cheapflights users on 10/24. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/87:18 pm -
3 stops44h 15m
Thu 11/125:01 am -
2 stops10h 30m
Deal found 10/24![Multiple Airlines logo]()
$701
Best flights from Islip to Sky Harbor IntlDiscover carefully curated flight deals from Islip to Sky Harbor Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 25, 2026.
Discover carefully curated flight deals from Islip to Sky Harbor Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 25, 2026.
This Southwest deal was found by Cheapflights users on 10/21. 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 1/195:45 am -
2 stops11h 05m
Tue 1/2610:40 am -
2 stops8h 50m
Deal found 10/21![Southwest logo]()
$305
This Kiwi.com deal was found by Cheapflights users on 10/24. 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.
Sun 11/86:13 pm -
1 stop21h 00m
Thu 11/122:04 pm -
2 stops16h 55m
Deal found 10/24![Breeze Airways logo]()
$517
This Southwest deal was found by Cheapflights users on 10/23. 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 1/83:50 pm -
1 stop7h 45m
Sun 1/101:30 am -
2 stops8h 25m
Deal found 10/23![Southwest logo]()
$330
This Southwest deal was found by Cheapflights users on 10/20. 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 4/194:45 pm -
1 stop10h 05m
Sat 4/245:55 am -
1 stop10h 55m
Deal found 10/20![Southwest logo]()
$522
This Southwest deal was found by Cheapflights users on 10/21. 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 11/65:40 pm -
2 stops9h 30m
Tue 11/106:05 am -
1 stop8h 10m
Deal found 10/21![Southwest logo]()
$528
This Southwest deal was found by Cheapflights users on 10/24. 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 4/165:50 am -
2 stops11h 20m
Sun 4/1811:00 pm -
1 stop9h 10m
Deal found 10/24![Southwest logo]()
$552
This Southwest deal was found by Cheapflights users on 10/21. 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 4/35:05 pm -
1 stop9h 50m
Sun 4/411:00 pm -
1 stop14h 40m
Deal found 10/21![Southwest logo]()
$582
Last-minute flights from Islip to Sky Harbor IntlDiscover last-minute flight deals from Islip to Sky Harbor Intl. Data last updated October 25, 2026 and is based on user searches.
Discover last-minute flight deals from Islip to Sky Harbor Intl. Data last updated October 25, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/296:13 pm -
1 stop21h 00m
Sun 11/19:59 pm -
2 stops35h 21m
Deal found 10/23![Multiple Airlines logo]()
$669
This Southwest deal was found by Cheapflights users on 10/21. 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 11/65:40 pm -
2 stops9h 30m
Tue 11/106:05 am -
1 stop8h 10m
Deal found 10/21![Southwest logo]()
$528
This Southwest deal was found by Cheapflights users on 10/23. 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 11/77:55 am -
1 stop9h 25m
Wed 11/116:05 am -
1 stop8h 10m
Deal found 10/23![Southwest logo]()
$637
This Mytrip deal was found by Cheapflights users on 10/23. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/78:30 pm -
3 stops29h 25m
Wed 11/117:21 pm -
2 stops20h 10m
Deal found 10/23![Multiple Airlines logo]()
$654
This Kiwi.com deal was found by Cheapflights users on 10/24. 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.
Sun 11/86:13 pm -
1 stop21h 00m
Thu 11/122:04 pm -
2 stops16h 55m
Deal found 10/24![Breeze Airways logo]()
$517
This Southwest deal was found by Cheapflights users on 10/24. 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 11/85:35 am -
1 stop12h 35m
Wed 11/1112:30 am -
1 stop10h 10m
Deal found 10/24![Southwest logo]()
$687
This Mytrip deal was found by Cheapflights users on 10/24. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/87:18 pm -
3 stops44h 15m
Thu 11/125:01 am -
2 stops10h 30m
Deal found 10/24![Multiple Airlines logo]()
$701
One-way flights from Islip to Sky Harbor IntlSearch for one-way flight options from Islip to Sky Harbor Intl. Find affordable one-way fares based on user searches. Data last updated October 25, 2026.
Search for one-way flight options from Islip to Sky Harbor Intl. Find affordable one-way fares based on user searches. Data last updated October 25, 2026.
This Southwest deal was found by Cheapflights users on 10/21. 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 12/156:05 am -
1 stop8h 45m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/21![Southwest logo]()
$147
This Southwest deal was found by Cheapflights users on 10/21. 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 12/189:25 am -
1 stop13h 15m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/21![Southwest logo]()
$165
This Southwest deal was found by Cheapflights users on 10/23. 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 12/195:05 pm -
1 stop9h 35m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/23![Southwest logo]()
$171
This Kiwi.com deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/151:38 pm -
3 stops23h 03m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/21![Multiple Airlines logo]()
$173
This Mytrip deal was found by Cheapflights users on 10/23. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/1810:44 am -
3 stops36h 20m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/23![Multiple Airlines logo]()
$246
This Frontier deal was found by Cheapflights users on 10/22. 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 11/234:40 pm -
2 stops17h 38m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/22![Frontier logo]()
$310
This Frontier deal was found by Cheapflights users on 10/22. 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 11/204:40 pm -
2 stops17h 38m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/22![Frontier logo]()
$364
This Frontier deal was found by Cheapflights users on 10/22. 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 12/2511:26 am -
2 stops21h 26m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/22![Frontier logo]()
$528
Find flight deals from Islip to Sky Harbor Intl
Discover tips and strategies to find the most affordable flight options for your journey from Islip (ISP) to Sky Harbor Intl (PHX). 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 October 25, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $294 (Southwest) |
One-way from | $147 (Southwest) |
Popular in | October |
Cheapest in | January |
Average price | $519 |
Cheapflights Fare Finder
Customize your flight search to find flights from Islip to Sky Harbor Intl that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated October 25, 2026.
Use the filters below to find and compare flights from Islip to Phoenix Sky Harbor Intl Airport that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
Quickest round-trip
IslipPhoenix
ISP Islip Long Island - PHX Phoenix Sky Harbor Intl
ISPPHX
Islip Long Island
Tue 12/15
6:05 am-12:50 pm
1 stop8h 45m
Phoenix Sky Harbor Intl
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$147
IslipPhoenix
ISP Islip Long Island - PHX Phoenix Sky Harbor Intl
ISPPHX
Islip Long Island
Fri 12/18
9:25 am-8:40 pm
1 stop13h 15m
Phoenix Sky Harbor Intl
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$165
IslipPhoenix
ISP Islip Long Island - PHX Phoenix Sky Harbor Intl
ISPPHX
Islip Long Island
Sat 12/19
5:05 pm-12:40 am
2 stops9h 35m
Phoenix Sky Harbor Intl
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$264
IslipPhoenix
ISP Islip Long Island - PHX Phoenix Sky Harbor Intl
ISPPHX
Islip Long Island
Tue 1/19
5:45 am-2:50 pm
2 stops11h 05m
Phoenix Sky Harbor Intl
Tue 1/26
10:40 am-9:30 pm
2 stops8h 50m
$305
IslipPhoenix
ISP Islip Long Island - PHX Phoenix Sky Harbor Intl
ISPPHX
Islip Long Island
Fri 1/8
3:50 pm-9:35 pm
1 stop7h 45m
Phoenix Sky Harbor Intl
Sun 1/10
1:30 am-11:55 am
2 stops8h 25m
$330
IslipPhoenix
ISP Islip Long Island - PHX Phoenix Sky Harbor Intl
ISPPHX
Islip Long Island
Sun 11/8
6:13 pm-1:13 pm
1 stop21h 00m
Phoenix Sky Harbor Intl
Thu 11/12
2:04 pm-8:59 am
2 stops16h 55m
$517
IslipPhoenix
ISP Islip Long Island - PHX Phoenix Sky Harbor Intl
ISPPHX
Islip Long Island
Mon 4/19
4:45 pm-11:50 pm
1 stop10h 05m
Phoenix Sky Harbor Intl
Sat 4/24
5:55 am-7:50 pm
1 stop10h 55m
$522
IslipPhoenix
ISP Islip Long Island - PHX Phoenix Sky Harbor Intl
ISPPHX
Islip Long Island
Fri 11/6
5:40 pm-1:10 am
2 stops9h 30m
Phoenix Sky Harbor Intl
Tue 11/10
6:05 am-4:15 pm
1 stop8h 10m
$528
IslipPhoenix
ISP Islip Long Island - PHX Phoenix Sky Harbor Intl
ISPPHX
Islip Long Island
Fri 4/16
5:50 am-2:10 pm
2 stops11h 20m
Phoenix Sky Harbor Intl
Sun 4/18
11:00 pm-11:10 am
1 stop9h 10m
$552
IslipPhoenix
ISP Islip Long Island - PHX Phoenix Sky Harbor Intl
ISPPHX
Islip Long Island
Sat 4/3
5:05 pm-11:55 pm
1 stop9h 50m
Phoenix Sky Harbor Intl
Sun 4/4
11:00 pm-4:40 pm
1 stop14h 40m
$582
Showing 1-10 of 13 resultsSorted by cheapest first
Compare providers for flights from Islip to Sky Harbor Intl
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 Sky Harbor Intl in October.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Islip, New York-Phoenix Sky Harbor Intl Airport 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-Phoenix Sky Harbor Intl Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Islip, New York-Phoenix Sky Harbor Intl Airport flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Islip, New York-Phoenix Sky Harbor Intl Airport 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-Phoenix Sky Harbor Intl Airport 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 Sky Harbor Intl
Have a flexible travel schedule? Discover the best time to fly to Sky Harbor Intl from Islip with our price prediction graph.
ISP-PHX
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 Sky Harbor Intl
Get insights into the airlines that provide service to Sky Harbor Intl. 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 Sky Harbor Intl. Reviews last updated October 25, 2026.
Get a feel of what it's like to fly with Southwest from Islip to Phoenix Sky Harbor Intl Airport by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Food
7.0
Entertainment
7.4
Boarding
8.1
Comfort
8.0
Crew
8.6
Overall
7.9
Reviews
1 / 20
10.0
ExcellentSherrie,Jan 2024
LAX - PHX
Food
7.0
Entertainment
7.4
Boarding
8.1
Comfort
8.0
Crew
8.6
Overall
7.9
Reviews
1 / 20
10.0
ExcellentSherrie,Jan 2024
LAX - PHX
Related info for your journey
Find useful and relevant information for your journey from Islip to Sky Harbor Intl. 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 Phoenix Sky Harbor Intl Airport?
Book flights to Phoenix Sky Harbor Intl Airport if you plan to visit one of these locationsGlendale
Buckeye
Payson
Goodyear
Peoria
Surprise
Wickenburg
Paradise Valley
Chandler
Casa Grande
Camp Verde
Globe
Fountain Hills
Guadalupe
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
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Complete your trip
Complete your trip to Sky Harbor Intl by adding a car rental and/or hotel reservation to your travel itinerary.
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Islip and Sky Harbor Intl flights
Browse other Islip and Sky Harbor Intl flight options. Last updated on October 25, 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 October 25, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Other flights to Sky Harbor Intl
Explore flights to Sky Harbor Intl departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on October 25, 2026.
Top airline flying from Islip to Sky Harbor Intl
Discover the top airline that operate flights from Islip to Sky Harbor Intl. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated October 25, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$429 | Average$497 | FlexibilityNo cancel fee | On-time63% |