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$100+ 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 4/16. Fares are subject to change and may not be available on all flights or dates of travel.
ISP — PHX
Mar 20 — Mar 271
Fri 3/20
Fri 3/27
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 February 18, 2026.

This Frontier deal was found by Cheapflights users on 2/18. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/259:33 am
ISP
-
PHX
1 stop14h 39m
Frontier
Wed 3/1112:59 am
PHX
-
ISP
1 stop12h 14m
Frontier
Deal found 2/18$286
This Frontier deal was found by Cheapflights users on 2/18. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/91:22 pm
ISP
-
PHX
1 stop13h 22m
Frontier
Wed 3/1112:59 am
PHX
-
ISP
1 stop12h 14m
Frontier
Deal found 2/18$300
This Frontier deal was found by Cheapflights users on 2/18. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/2812:01 pm
ISP
-
PHX
1 stop12h 11m
Frontier
Thu 3/512:59 am
PHX
-
ISP
1 stop9h 48m
Frontier
Deal found 2/18$341
This Kiwi.com deal was found by Cheapflights users on 2/15. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/28:23 am
ISP
-
PHX
1 stop11h 44m
Multiple Airlines
Mon 3/1612:09 am
PHX
-
ISP
2 stops32h 01m
Multiple Airlines
Deal found 2/15$358
This Trip.com deal was found by Cheapflights users on 2/16. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/88:30 am
ISP
-
PHX
2 stops31h 10m
Frontier
Wed 4/1510:50 am
PHX
-
ISP
2 stops19h 23m
Frontier
Deal found 2/16$360
This Priceline deal was found by Cheapflights users on 2/16. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/28:23 am
ISP
-
PHX
1 stop11h 44m
Frontier
Thu 3/512:59 am
PHX
-
ISP
1 stop9h 48m
Frontier
Deal found 2/16$361
This Southwest deal was found by Cheapflights users on 2/15. 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 3/174:40 pm
ISP
-
PHX
1 stop9h 25m
Southwest
Tue 3/246:05 am
PHX
-
ISP
1 stop7h 00m
Southwest
Deal found 2/15$367
This Frontier deal was found by Cheapflights users on 2/17. 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 2/228:33 am
ISP
-
PHX
1 stop11h 24m
Frontier
Sun 3/111:59 pm
PHX
-
ISP
1 stop12h 40m
Frontier
Deal found 2/17$372
This Southwest deal was found by Cheapflights users on 2/15. 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 3/184:40 pm
ISP
-
PHX
1 stop9h 25m
Southwest
Mon 3/2311:45 pm
PHX
-
ISP
2 stops8h 55m
Southwest
Deal found 2/15$385
This Southwest deal was found by Cheapflights users on 2/17. 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.
Mon 3/235:55 pm
ISP
-
PHX
1 stop9h 10m
Southwest
Thu 3/267:05 am
PHX
-
ISP
1 stop7h 15m
Southwest
Deal found 2/17$393

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 February 18, 2026.

Round-trip from

$358
(Kiwi.com)

One-way from

$100
(Frontier)

Popular in

December

Cheapest in

March

Average price

$450
From Islip Long Island to Phoenix
Search Deals
One-way flight from Islip Long Island to Phoenix
Search Deals
Highest demand for flights based on searches. 9% potential increase in price ($49 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($23 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2026
Search Deals

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 February 18, 2026.
Use the filters below to find and compare flights from Islip to Phoenix that are best for you.

Fly from

Islip

Fly to

Phoenix

Route

Depart

Return

Price

IslipPhoenix

ISP - PHX

ISPPHX

Islip Long Island

Mon 3/9

1:22 pm-11:44 pm

1 stop13h 22m

Phoenix Sky Harbor Intl

Wed 3/11

12:59 am-4:13 pm

1 stop12h 14m

$300

IslipPhoenix

ISP - PHX

ISPPHX

Islip Long Island

Sat 2/28

12:01 pm-10:12 pm

1 stop12h 11m

Phoenix Sky Harbor Intl

Thu 3/5

12:59 am-12:47 pm

1 stop9h 48m

$341

IslipPhoenix

ISP - PHX

ISPPHX

Islip Long Island

Mon 3/2

8:23 am-6:07 pm

1 stop11h 44m

Phoenix Sky Harbor Intl

Mon 3/16

12:09 am-11:10 am

2 stops32h 01m

$358

IslipPhoenix

ISP - PHX

ISPPHX

Islip Long Island

Mon 3/2

8:23 am-6:07 pm

1 stop11h 44m

Phoenix Sky Harbor Intl

Thu 3/5

12:59 am-12:47 pm

1 stop9h 48m

$361

IslipPhoenix

ISP - PHX

ISPPHX

Islip Long Island

Wed 4/8

4:10 pm-9:55 pm

1 stop8h 45m

Phoenix Sky Harbor Intl

Wed 4/15

11:55 pm-12:05 pm

1 stop9h 10m

$367

IslipPhoenix

ISP - PHX

ISPPHX

Islip Long Island

Tue 3/17

4:40 pm-11:05 pm

1 stop9h 25m

Phoenix Sky Harbor Intl

Tue 3/24

6:05 am-4:05 pm

1 stop7h 00m

$367

IslipPhoenix

ISP - PHX

ISPPHX

Islip Long Island

Mon 2/23

8:23 am-5:29 pm

1 stop11h 06m

Phoenix Sky Harbor Intl

Thu 2/26

11:59 pm-2:39 pm

1 stop12h 40m

$372

IslipPhoenix

ISP - PHX

ISPPHX

Islip Long Island

Sun 2/22

8:33 am-5:57 pm

1 stop11h 24m

Phoenix Sky Harbor Intl

Sun 3/1

11:59 pm-2:39 pm

1 stop12h 40m

$372

IslipPhoenix

ISP - PHX

ISPPHX

Islip Long Island

Wed 3/18

4:40 pm-11:05 pm

1 stop9h 25m

Phoenix Sky Harbor Intl

Mon 3/23

11:55 pm-1:40 pm

1 stop10h 45m

$385

IslipPhoenix

ISP - PHX

ISPPHX

Islip Long Island

Thu 4/16

4:07 pm-11:18 pm

1 stop10h 11m

$100

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/16

Showing 1-10 of 19 results
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

What is the cheapest month to book a flight from Islip, New York to Phoenix?

Currently, October is the cheapest month in which you can book a flight from Islip, New York to Phoenix (average of $160). Flying from Islip, New York to Phoenix in June is currently the most expensive (average of $251). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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 February 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.
Southwest
8.0
Very good
4,295 reviews

Overall

8.0

Food

7.0

Crew

8.6

Boarding

8.1

Comfort

8.0

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
Southwest
8.0
Very good
4,295 reviews
Southwest
8.0
Very good
4,295 reviews

Overall

8.0

Food

7.0

Crew

8.6

Boarding

8.1

Comfort

8.0

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am

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 8h 45m. 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 $332. Southwest is currently priced 31% below the average price you’ll pay for this route.

  • 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.

  • What is the cheapest month to book a flight from Islip, New York to Phoenix?

    Currently, October is the cheapest month in which you can book a flight from Islip, New York to Phoenix (average of $160). Flying from Islip, New York to Phoenix in June is currently the most expensive (average of $251). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Alternative routes for Islip to Phoenix

See prices for flight routes from nearby airports that may be better suited for you.
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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 February 18, 2026.
AirlineCheapestAverageFlexibilityOn-time
SouthwestCheapest$332Average$474FlexibilityNo cancel feeOn-time63%

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