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$164+ Cheap flights from Islip, NY (ISP) to Phoenix

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 10/17. Fares are subject to change and may not be available on all flights or dates of travel.
ISP — PHX
Aug 18 — Aug 251
Tue 8/18
Tue 8/25
1 adult, Economy
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Cheap flight deals from Islip to Phoenix

Cheapest flights from Islip to Phoenix
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 July 19, 2026.

This Frontier deal was found by Cheapflights users on 7/15. 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.
Thu 10/154:13 pm
ISP
-
PHX
1 stop10h 43m
Frontier
Sat 10/2410:51 pm
PHX
-
ISP
1 stop7h 42m
Frontier
Deal found 7/15$305
This Southwest deal was found by Cheapflights users on 7/15. 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 9/2312:55 pm
ISP
-
PHX
1 stop9h 35m
Southwest
Sat 9/2611:10 pm
PHX
-
ISP
1 stop7h 45m
Southwest
Deal found 7/15$311
This Frontier deal was found by Cheapflights users on 7/15. 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.
Thu 10/84:13 pm
ISP
-
PHX
1 stop10h 43m
Frontier
Tue 10/1310:51 pm
PHX
-
ISP
1 stop13h 12m
Frontier
Deal found 7/15$325
This Frontier deal was found by Cheapflights users on 7/17. 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 10/164:13 pm
ISP
-
PHX
1 stop10h 43m
Frontier
Wed 10/2110:51 pm
PHX
-
ISP
1 stop7h 42m
Frontier
Deal found 7/17$328
This Southwest deal was found by Cheapflights users on 7/18. 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.
Thu 9/244:05 pm
ISP
-
PHX
2 stops8h 50m
Southwest
Sat 9/2611:10 pm
PHX
-
ISP
1 stop7h 45m
Southwest
Deal found 7/18$342
This Frontier deal was found by Cheapflights users on 7/17. 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.
Sun 10/114:13 pm
ISP
-
PHX
1 stop10h 43m
Frontier
Thu 10/1510:51 pm
PHX
-
ISP
1 stop7h 42m
Frontier
Deal found 7/17$345
This Frontier deal was found by Cheapflights users on 7/15. 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 10/164:13 pm
ISP
-
PHX
1 stop10h 43m
Frontier
Sat 10/2410:51 pm
PHX
-
ISP
1 stop7h 42m
Frontier
Deal found 7/15$355
This Southwest deal was found by Cheapflights users on 7/15. 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 12/112:25 pm
ISP
-
PHX
2 stops9h 45m
Southwest
Mon 12/76:10 am
PHX
-
ISP
1 stop8h 10m
Southwest
Deal found 7/15$364

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 July 19, 2026.

Round-trip from

$305
(Frontier)

One-way from

$164
(Frontier)

Popular in

December

Cheapest in

January

Average price

$341
From Islip Long Island to Phoenix
Search Deals
One-way flight from Islip Long Island to Phoenix
Search Deals
High demand for flights, 3% potential price rise
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($8 potential savings vs. average RT price).
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Average for round-trip flights in July 2026
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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 2,558,603 searches. Data last updated July 19, 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

Price

Cheapest round-trip

IslipPhoenix

ISP - PHX

ISPPHX

Islip Long Island

Thu 10/15

4:13 pm-11:56 pm

1 stop10h 43m

Phoenix Sky Harbor Intl

Sat 10/24

10:51 pm-9:33 am

1 stop7h 42m

$308

IslipPhoenix

ISP - PHX

ISPPHX

Islip Long Island

Wed 9/23

12:55 pm-7:30 pm

1 stop9h 35m

Phoenix Sky Harbor Intl

Sat 9/26

11:10 pm-9:55 am

1 stop7h 45m

$311

IslipPhoenix

ISP - PHX

ISPPHX

Islip Long Island

Fri 10/16

4:13 pm-11:56 pm

1 stop10h 43m

Phoenix Sky Harbor Intl

Sat 10/24

10:51 pm-9:33 am

1 stop7h 42m

$328

IslipPhoenix

ISP - PHX

ISPPHX

Islip Long Island

Thu 9/24

4:05 pm-9:55 pm

2 stops8h 50m

Phoenix Sky Harbor Intl

Sat 9/26

11:10 pm-9:55 am

1 stop7h 45m

$342

IslipPhoenix

ISP - PHX

ISPPHX

Islip Long Island

Thu 9/24

4:05 pm-10:20 pm

1 stop9h 15m

Phoenix Sky Harbor Intl

Sun 9/27

11:10 pm-9:40 am

1 stop7h 30m

$389
Quickest round-trip

IslipPhoenix

ISP - PHX

ISPPHX

Islip Long Island

Sat 8/15

11:55 am-5:00 pm

1 stop8h 05m

Phoenix Sky Harbor Intl

Fri 8/28

5:10 am-4:25 pm

1 stop8h 15m

$402

IslipPhoenix

ISP - PHX

ISPPHX

Islip Long Island

Thu 8/13

10:20 am-5:15 pm

1 stop9h 55m

Phoenix Sky Harbor Intl

Wed 8/19

11:05 pm-11:55 am

1 stop9h 50m

$438
Cheapest one-way
Quickest one-way

IslipPhoenix

ISP - PHX

ISPPHX

Islip Long Island

Sat 8/15

11:55 am-5:00 pm

1 stop8h 05m

$169

IslipPhoenix

ISP - PHX

ISPPHX

Islip Long Island

Sat 8/15

10:43 am-11:05 pm

2 stops15h 22m

$227

IslipPhoenix

ISP - PHX

ISPPHX

Islip Long Island

Wed 12/23

9:30 am-8:35 pm

1 stop13h 05m

$229

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/14

Showing 1-10 of 16 resultsSorted by cheapest first
1
2

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.
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

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 July 19, 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.
Southwest
8.0
Very good
4,242 reviews

Boarding

8.1

Comfort

8.0

Entertainment

7.5

Overall

8.0

Food

7.0

Crew

8.6

Reviews

1 / 20
10.0
Excellent

Sherrie,Jan 2024

LAX - PHX

It was a great flight overall. It took a long time to take off. We spent a long time waiting on the plane before departure.
Southwest
8.0
Very good
4,242 reviews
Southwest
8.0
Very good
4,242 reviews

Boarding

8.1

Comfort

8.0

Entertainment

7.5

Overall

8.0

Food

7.0

Crew

8.6

Reviews

1 / 20
10.0
Excellent

Sherrie,Jan 2024

LAX - PHX

It was a great flight overall. It took a long time to take off. We spent a long time waiting on the plane before departure.

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.

  • What airport do you fly from for flights from Islip to Phoenix?

    Islip Long Island (ISP) is the airport you will fly out of if you book a flight from Islip to Phoenix. You should not have trouble finding flights to Phoenix from Long Island; the airport handles an average of 0 outbound flights to Phoenix per day. You should also have plenty of airline options to choose from since 1 airline has flights from the Islip airport to Phoenix. It is only a 7.2 mi journey to Long Island (ISP) from Islip’s city center.

  • How long is the flight from Islip, New York to Phoenix?

    Departing from Islip, New York to Phoenix will take you 9h 35m. The distance from Islip, New York to Phoenix is about 2182 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What is the cheapest airline to fly from Islip, New York to Phoenix round-trip?

    Flying on Southwest is currently your cheapest option to Phoenix, with prices starting at $337.

  • Can I find deals for flights from Islip to Phoenix that include hotel bookings?

    Yes. In addition to deals on Islip to Phoenix flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Islip to Phoenix?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Islip to Phoenix.

  • Can I find deals for business class flights from Islip to Phoenix?

    Yes. Cheapflights offers flight deals from Islip to Phoenix by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

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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 2,558,603 searches. Data last updated July 19, 2026.
AirlineCheapestAverageFlexibilityOn-time
SouthwestCheapest$337Average$447FlexibilityNo cancel feeOn-time63%

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