$187+ Cheap flights from Islip, NY (ISP) to Phoenix
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 11/12. Fares are subject to change and may not be available on all flights or dates of travel.
ISP — PHX
Oct 18 — Oct 251
Round-trip
1 adult, Economy
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Find cheap flights from Islip to Phoenix with Cheapflights
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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 Phoenix
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Best
Last-minute
One-way
Cheapest flights from Islip to PhoenixExplore the most affordable flight options available from Islip to Phoenix. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 18, 2026.
Explore the most affordable flight options available from Islip to Phoenix. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 18, 2026.
This Southwest deal was found by Cheapflights users on 9/15. 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 10/214:20 pm -
1 stop9h 20m
Wed 10/285:45 am -
1 stop7h 00m
Deal found 9/15![Southwest logo]()
$282
This Southwest deal was found by Cheapflights users on 9/15. 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 10/214:20 pm -
1 stop9h 20m
Sat 10/245:45 am -
1 stop7h 25m
Deal found 9/15![Southwest logo]()
$300
This Southwest deal was found by Cheapflights users on 9/16. 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.
Tue 10/204:20 pm -
1 stop8h 45m
Tue 10/275:45 am -
1 stop7h 00m
Deal found 9/16![Southwest logo]()
$360
This Southwest deal was found by Cheapflights users on 9/15. 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.
Fri 11/271:35 pm -
2 stops13h 15m
Wed 12/26:05 am -
1 stop8h 10m
Deal found 9/15![Southwest logo]()
$395
This Southwest deal was found by Cheapflights users on 9/17. 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 10/165:40 pm -
1 stop9h 30m
Mon 10/1910:55 pm -
2 stops13h 35m
Deal found 9/17![Southwest logo]()
$397
Best flights from Islip to PhoenixDiscover carefully curated flight deals from Islip to Phoenix that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 18, 2026.
Discover carefully curated flight deals from Islip to Phoenix that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 18, 2026.
This Southwest deal was found by Cheapflights users on 9/15. 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 10/214:20 pm -
1 stop9h 20m
Wed 10/285:45 am -
1 stop7h 00m
Deal found 9/15![Southwest logo]()
$282
This Southwest deal was found by Cheapflights users on 9/16. 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.
Tue 10/204:20 pm -
1 stop9h 20m
Tue 10/278:15 am -
2 stops8h 45m
Deal found 9/16![Southwest logo]()
$365
This Southwest deal was found by Cheapflights users on 9/17. 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 10/165:40 pm -
2 stops8h 50m
Mon 10/1910:55 pm -
2 stops13h 35m
Deal found 9/17![Southwest logo]()
$424
This Southwest deal was found by Cheapflights users on 9/18. 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 10/214:20 pm -
1 stop9h 20m
Sun 10/2510:55 pm -
1 stop8h 25m
Deal found 9/18![Southwest logo]()
$437
This Southwest deal was found by Cheapflights users on 9/15. 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.
Fri 11/275:40 pm -
1 stop9h 15m
Wed 12/26:05 am -
1 stop8h 10m
Deal found 9/15![Southwest logo]()
$450
This Southwest deal was found by Cheapflights users on 9/17. 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 10/155:40 pm -
1 stop9h 30m
Mon 10/1910:55 pm -
2 stops13h 35m
Deal found 9/17![Southwest logo]()
$477
This Southwest deal was found by Cheapflights users on 9/13. 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 2/133:30 pm -
1 stop7h 40m
Fri 2/197:50 am -
2 stops8h 55m
Deal found 9/13![Southwest logo]()
$502
This Southwest deal was found by Cheapflights users on 9/16. 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.
Wed 10/1412:50 pm -
1 stop10h 10m
Wed 10/215:45 am -
1 stop7h 00m
Deal found 9/16![Southwest logo]()
$503
This Southwest deal was found by Cheapflights users on 9/15. 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.
Fri 11/65:40 pm -
2 stops9h 30m
Sun 11/85:45 am -
2 stops9h 20m
Deal found 9/15![Southwest logo]()
$507
Last-minute flights from Islip to PhoenixDiscover last-minute flight deals from Islip to Phoenix. Data last updated September 18, 2026 and is based on user searches.
Discover last-minute flight deals from Islip to Phoenix. Data last updated September 18, 2026 and is based on user searches.
This Southwest deal was found by Cheapflights users on 9/17. 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 10/165:40 pm -
1 stop9h 30m
Mon 10/1910:55 pm -
2 stops13h 35m
Deal found 9/17![Southwest logo]()
$397
This Southwest deal was found by Cheapflights users on 9/16. 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.
Tue 10/204:20 pm -
1 stop8h 45m
Tue 10/275:45 am -
1 stop7h 00m
Deal found 9/16![Southwest logo]()
$360
This Southwest deal was found by Cheapflights users on 9/15. 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 10/2012:50 pm -
1 stop7h 35m
Fri 10/2310:30 pm -
1 stop10h 25m
Deal found 9/15![Southwest logo]()
$428
This Southwest deal was found by Cheapflights users on 9/15. 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 10/214:20 pm -
1 stop9h 20m
Wed 10/285:45 am -
1 stop7h 00m
Deal found 9/15![Southwest logo]()
$282
This Southwest deal was found by Cheapflights users on 9/15. 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 10/214:20 pm -
1 stop9h 20m
Sat 10/245:45 am -
1 stop7h 25m
Deal found 9/15![Southwest logo]()
$300
One-way flights from Islip to PhoenixSearch for one-way flight options from Islip to Phoenix. Find affordable one-way fares based on user searches. Data last updated September 18, 2026.
Search for one-way flight options from Islip to Phoenix. Find affordable one-way fares based on user searches. Data last updated September 18, 2026.
This Southwest deal was found by Cheapflights users on 9/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/125:40 pm -
2 stops8h 35m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/13![Southwest logo]()
$187
This Mytrip deal was found by Cheapflights users on 9/16. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/55:43 pm -
2 stops29h 08m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/16![Frontier logo]()
$247
This Southwest deal was found by Cheapflights users on 9/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/194:05 pm -
1 stop7h 40m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/13![Southwest logo]()
$249
This Southwest deal was found by Cheapflights users on 9/14. 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 10/134:20 pm -
1 stop8h 45m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/14![Southwest logo]()
$285
This Frontier deal was found by Cheapflights users on 9/17. 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 12/189:56 am -
1 stop14h 13m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/17![Frontier logo]()
$286
This Southwest deal was found by Cheapflights users on 9/16. 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.
Mon 10/53:10 pm -
2 stops9h 50m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/16![Southwest logo]()
$314
This Kiwi.com deal was found by Cheapflights users on 9/14. 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.
Tue 10/1312:00 pm -
3 stops23h 10m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/14![Multiple Airlines logo]()
$318
This Kiwi.com deal was found by Cheapflights users on 9/13. 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.
Thu 11/197:45 pm -
3 stops48h 44m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/13![Multiple Airlines logo]()
$341
This Frontier deal was found by Cheapflights users on 9/16. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/39:56 am -
2 stops12h 17m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/16![Frontier logo]()
$354
This Frontier deal was found by Cheapflights users on 9/15. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/236:55 pm -
2 stops23h 14m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/15![Frontier logo]()
$368
Find flight deals from Islip to Phoenix
Discover tips and strategies to find the most affordable flight options for your journey from Islip (ISP) to Phoenix (PH1). 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 September 18, 2026.
Round-trip from | $282 (Southwest) |
|---|---|
One-way from | $187 (Southwest) |
Popular in | December |
Cheapest in | January |
Average price | $410 |
Cheapflights Fare Finder
Customize your flight search to find flights from Islip to Phoenix 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 September 18, 2026.
Use the filters below to find and compare flights from Islip to Phoenix that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
IslipPhoenix
ISP Islip Long Island - PHX Phoenix Sky Harbor Intl
ISPPHX
Islip Long Island
Thu 11/12
5:40 pm-12:15 am
2 stops8h 35m
Phoenix Sky Harbor Intl
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$187
Quickest round-trip
IslipPhoenix
ISP Islip Long Island - PHX Phoenix Sky Harbor Intl
ISPPHX
Islip Long Island
Thu 11/19
4:05 pm-9:45 pm
1 stop7h 40m
Phoenix Sky Harbor Intl
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$249
IslipPhoenix
ISP Islip Long Island - PHX Phoenix Sky Harbor Intl
ISPPHX
Islip Long Island
Wed 10/21
4:20 pm-10:40 pm
1 stop9h 20m
Phoenix Sky Harbor Intl
Wed 10/28
5:45 am-3:45 pm
1 stop7h 00m
$282
IslipPhoenix
ISP Islip Long Island - PHX Phoenix Sky Harbor Intl
ISPPHX
Islip Long Island
Tue 10/13
4:20 pm-10:05 pm
1 stop8h 45m
Phoenix Sky Harbor Intl
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$285
IslipPhoenix
ISP Islip Long Island - PHX Phoenix Sky Harbor Intl
ISPPHX
Islip Long Island
Mon 10/5
3:10 pm-10:00 pm
2 stops9h 50m
Phoenix Sky Harbor Intl
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$314
IslipPhoenix
ISP Islip Long Island - PHX Phoenix Sky Harbor Intl
ISPPHX
Islip Long Island
Tue 10/20
4:20 pm-10:40 pm
1 stop9h 20m
Phoenix Sky Harbor Intl
Tue 10/27
8:15 am-8:00 pm
2 stops8h 45m
$365
IslipPhoenix
ISP Islip Long Island - PHX Phoenix Sky Harbor Intl
ISPPHX
Islip Long Island
Fri 10/23
6:55 pm-3:09 pm
2 stops23h 14m
Phoenix Sky Harbor Intl
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$368
IslipPhoenix
ISP Islip Long Island - PHX Phoenix Sky Harbor Intl
ISPPHX
Islip Long Island
Thu 12/3
9:56 am-8:13 pm
2 stops12h 17m
Phoenix Sky Harbor Intl
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$378
IslipPhoenix
ISP Islip Long Island - PHX Phoenix Sky Harbor Intl
ISPPHX
Islip Long Island
Thu 10/15
7:31 pm-12:13 pm
1 stop19h 42m
Phoenix Sky Harbor Intl
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$420
IslipPhoenix
ISP Islip Long Island - PHX Phoenix Sky Harbor Intl
ISPPHX
Islip Long Island
Fri 10/16
5:40 pm-11:30 pm
2 stops8h 50m
Phoenix Sky Harbor Intl
Mon 10/19
10:55 pm-3:30 pm
2 stops13h 35m
$424
Showing 1-10 of 18 resultsSorted by cheapest first
Best time to book a flight from Islip to Phoenix
Have a flexible travel schedule? Discover the best time to fly to Phoenix from Islip with our price prediction graph.
ISP-PH1
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.
Cheapflights Insights
Everything you need to know about your flight from Islip to Phoenix
ISP-PH1
ISP-PHX
No data available for this route at this time. Please check back soon.
Reviews of airlines servicing Phoenix
Get insights into the airlines that provide service to Phoenix. 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 Phoenix. Reviews last updated September 18, 2026.
Peruse reviews from past customers who have flown with Southwest from Islip to Phoenix to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Crew
8.6
Overall
8.0
Food
7.0
Entertainment
7.5
Comfort
8.0
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentSherrie,Jan 2024
LAX - PHX
Crew
8.6
Overall
8.0
Food
7.0
Entertainment
7.5
Comfort
8.0
Boarding
8.1
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 Phoenix. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Complete your trip
Complete your trip to Phoenix by adding a car rental and/or hotel reservation to your travel itinerary.
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Islip and Phoenix flights
Browse other Islip and Phoenix flight options. Last updated on September 18, 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 September 18, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top airline flying from Islip to Phoenix
Discover the top airline that operate flights from Islip to Phoenix. 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 September 18, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$429 | Average$497 | FlexibilityNo cancel fee | On-time63% |