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$124+ Cheap flights from Islip (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 12/4. Fares are subject to change and may not be available on all flights or dates of travel.
ISP — PHX
oct. 17 — oct. 241
vie. 10/17
vie. 10/24
1 adult, Economy
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Cheap 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 septiembre 17, 2025.

Round-trip from

$238
(Frontier)

One-way from

$124
(JetBlue)

Popular in

June

Cheapest in

April

Average price

$377
From Islip Long Island to Phoenix
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One-way flight from Islip Long Island to Phoenix
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Highest demand for flights based on searches. 20% potential increase in price ($120 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($23 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find 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 septiembre 17, 2025.

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.
mar. 10/219:37 pmISP - PHX
2 stops24h 10mFrontier
mar. 10/281:16 pmPHX - ISP
2 stops18h 21mFrontier
Deal found 9/16$238
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.
lun. 10/209:49 amISP - PHX
2 stops17h 05mFrontier
sáb. 10/254:14 pmPHX - ISP
2 stops13h 53mFrontier
Deal found 9/16$239
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.
vie. 10/319:54 amISP - PHX
2 stops15h 56mFrontier
vie. 11/78:43 pmPHX - ISP
2 stops12h 12mFrontier
Deal found 9/16$241
This Booking.com 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 10/111:35 amISP - PHX
2 stops53h 12mFrontier
dom. 10/57:25 amPHX - ISP
2 stops27h 22mFrontier
Deal found 9/16$243
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.
mar. 10/2110:39 amISP - PHX
2 stops14h 16mFrontier
sáb. 10/254:14 pmPHX - ISP
2 stops13h 53mFrontier
Deal found 9/16$245
This Booking.com 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 10/149:37 pmISP - PHX
2 stops37h 22mFrontier
mar. 10/2110:59 pmPHX - ISP
1 stop8h 58mFrontier
Deal found 9/16$249
This Booking.com 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 10/154:58 pmISP - PHX
1 stop23h 19mFrontier
mié. 10/2210:59 pmPHX - ISP
1 stop18h 43mFrontier
Deal found 9/16$257
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.
jue. 10/239:49 amISP - PHX
2 stops16h 27mFrontier
sáb. 10/254:14 pmPHX - ISP
2 stops13h 53mFrontier
Deal found 9/16$273
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.
lun. 10/279:49 amISP - PHX
2 stops15h 43mFrontier
jue. 10/307:36 pmPHX - ISP
2 stops10h 33mFrontier
Deal found 9/15$281
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.
dom. 10/59:49 amISP - PHX
2 stops16h 22mFrontier
jue. 10/167:59 pmPHX - ISP
2 stops10h 05mFrontier
Deal found 9/15$292

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 septiembre 17, 2025.
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

mar. 10/21

9:37 pm-3:23 pm

2 stops20h 46m

Phoenix Sky Harbor Intl

jue. 10/30

7:36 pm-10:37 am

2 stops12h 01m

$238

IslipPhoenix

ISP - PHX

ISPPHX

Islip Long Island

lun. 10/20

9:49 am-11:54 pm

2 stops17h 05m

Phoenix Sky Harbor Intl

sáb. 10/25

4:14 pm-9:07 am

2 stops13h 53m

$239

IslipPhoenix

ISP - PHX

ISPPHX

Islip Long Island

lun. 10/20

9:49 am-11:54 pm

2 stops17h 05m

Phoenix Sky Harbor Intl

jue. 10/30

7:36 pm-9:09 am

2 stops10h 33m

$239

IslipPhoenix

ISP - PHX

ISPPHX

Islip Long Island

vie. 10/31

9:54 am-10:50 pm

2 stops15h 56m

Phoenix Sky Harbor Intl

vie. 11/7

8:43 pm-10:55 am

2 stops12h 12m

$241

IslipPhoenix

ISP - PHX

ISPPHX

Islip Long Island

mié. 10/1

11:35 am-1:47 pm

2 stops53h 12m

Phoenix Sky Harbor Intl

dom. 10/5

7:25 am-1:47 pm

2 stops27h 22m

$243

IslipPhoenix

ISP - PHX

ISPPHX

Islip Long Island

mar. 10/21

10:39 am-9:55 pm

2 stops14h 16m

Phoenix Sky Harbor Intl

sáb. 10/25

4:14 pm-9:07 am

2 stops13h 53m

$245

IslipPhoenix

ISP - PHX

ISPPHX

Islip Long Island

mié. 10/22

4:58 pm-7:59 am

2 stops18h 01m

Phoenix Sky Harbor Intl

sáb. 10/25

4:14 pm-9:07 am

2 stops13h 53m

$245

IslipPhoenix

ISP - PHX

ISPPHX

Islip Long Island

mar. 10/14

9:37 pm-7:59 am

2 stops37h 22m

Phoenix Sky Harbor Intl

mar. 10/21

10:59 pm-10:57 am

1 stop8h 58m

$249

IslipPhoenix

ISP - PHX

ISPPHX

Islip Long Island

mié. 10/15

4:58 pm-1:17 pm

1 stop23h 19m

Phoenix Sky Harbor Intl

mié. 10/22

10:59 pm-8:42 pm

1 stop18h 43m

$257

IslipPhoenix

ISP - PHX

ISPPHX

Islip Long Island

jue. 10/23

9:49 am-11:16 pm

2 stops16h 27m

Phoenix Sky Harbor Intl

sáb. 10/25

4:14 pm-9:07 am

2 stops13h 53m

$273

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/15

Showing 1-10 of 22 results
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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 to Phoenix?

Currently, January is the cheapest month in which you can book a flight from Islip to Phoenix (average of $258). Flying from Islip to Phoenix in March is currently the most expensive (average of $337). 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.

What is the cheapest time of day to fly from ISP to PHX?

Find hourly flight availability from Islip to Phoenix. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated septiembre 17, 2025.

A simple way to save on the total cost of your ticket is to fly from Islip to Phoenix in the morning. If you’re flexible enough to do this you can expect to save up to 44% on your trip compared to booking a flight at noon.

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 septiembre 17, 2025.
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

Entertainment

7.5

Comfort

8.0

Overall

8.0

Crew

8.6

Boarding

8.1

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Southwest
8.0
Very good
4,242 reviews
Southwest
8.0
Very good
4,242 reviews

Entertainment

7.5

Comfort

8.0

Overall

8.0

Crew

8.6

Boarding

8.1

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines

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 to Phoenix?

    A quick flight from Islip to Phoenix can take about 20h 46m. Frontier provides one of the quickest options available for as low as $238. Islip and Phoenix are separated by a distance of 2182 mi.

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

    Our cheapest airline available from Islip to Phoenix is Southwest. Our recent data shows that you can find tickets from as low as $337 on this airline. Southwest is currently priced 27% below the average price you’ll pay for this route.

  • What are the cheapest airlines to fly from Islip to Phoenix one-way?

    $124 is the cheapest one-way deal found within the past few days, from JetBlue. You may also be able to find cheap deals on Southwest and Frontier, with prices starting from $185 and $225, respectively.

  • 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 to Phoenix?

    Currently, January is the cheapest month in which you can book a flight from Islip to Phoenix (average of $258). Flying from Islip to Phoenix in March is currently the most expensive (average of $337). 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 septiembre 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
SouthwestCheapest$337Average$455FlexibilityNo cancel feeOn-time63%

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