HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Islip

$144+ Cheap flights from Sky Harbor Intl (PHX) to Islip, NY (ISP)

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 12/17. Fares are subject to change and may not be available on all flights or dates of travel.
PHX — ISP
Dec 17 — Dec 241
Wed 12/17
Wed 12/24
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Sky Harbor Intl to Islip 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 Sky Harbor Intl to Islip

Discover tips and strategies to find the most affordable flight options for your journey from Sky Harbor Intl (PHX) to Islip (ISP). 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 November 17, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$144
(Frontier)

One-way from

$144
(Kiwi.com)

Popular in

December

Cheapest in

March

Average price

$434
Provider with most accurate pricing for Phoenix Sky Harbor Intl-Islip Long Island flight deals.
Search Deals
Provider most trusted by Cheapflights users for Phoenix Sky Harbor Intl-Islip Long Island flights.
Search Deals
From Phoenix Sky Harbor Intl to Islip Long Island
Search Deals
One-way flight from Phoenix Sky Harbor Intl to Islip Long Island
Search Deals
Highest demand for flights based on searches. 7% potential increase in price ($31 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($16 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in November 2025
Search Deals

Find flight deals from Sky Harbor Intl to Islip

Cheapest flights from Sky Harbor Intl to Islip
Explore the most affordable flight options available from Sky Harbor Intl to Islip. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 17, 2025.

This Frontier deal was found by Cheapflights users on 11/15. 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.
Wed 12/1712:59 amPHX - ISP
1 stop8h 26mFrontier
Mon 1/52:04 pmISP - PHX
1 stop11h 45mFrontier
Deal found 11/15$144
This Trip.com deal was found by Cheapflights users on 11/16. 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 12/107:00 amPHX - ISP
2 stops13h 44mFrontier
Thu 12/1110:19 amISP - PHX
2 stops16h 09mFrontier
Deal found 11/16$217
This Frontier deal was found by Cheapflights users on 11/15. 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.
Sat 12/2012:59 amPHX - ISP
1 stop10h 10mFrontier
Mon 1/52:04 pmISP - PHX
1 stop11h 45mFrontier
Deal found 11/15$273
This Frontier deal was found by Cheapflights users on 11/15. 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.
Sun 12/2112:59 amPHX - ISP
1 stop10h 10mFrontier
Mon 1/52:04 pmISP - PHX
1 stop11h 45mFrontier
Deal found 11/15$303
This CheapOair deal was found by Cheapflights users on 11/16. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/2912:59 amPHX - ISP
1 stop8h 26mFrontier
Sun 1/48:35 pmISP - PHX
1 stop29h 14mFrontier
Deal found 11/16$308
This Kiwi.com deal was found by Cheapflights users on 11/16. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/1712:07 pmPHX - ISP
2 stops27h 35mFrontier
Mon 11/249:02 amISP - PHX
1 stop16h 09mFrontier
Deal found 11/16$321
This Kiwi.com deal was found by Cheapflights users on 11/16. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/107:00 amPHX - ISP
2 stops13h 44mMultiple Airlines
Thu 12/112:19 pmISP - PHX
1 stop24h 45mMultiple Airlines
Deal found 11/16$325
This CheapOair deal was found by Cheapflights users on 11/16. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/1712:59 amPHX - ISP
1 stop8h 26mFrontier
Sun 12/218:35 pmISP - PHX
1 stop29h 14mFrontier
Deal found 11/16$362
This Kiwi.com deal was found by Cheapflights users on 11/15. 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.
Tue 12/3012:59 amPHX - ISP
1 stop13h 38mMultiple Airlines
Tue 1/66:00 amISP - PHX
2 stops52h 31mMultiple Airlines
Deal found 11/15$367
This Frontier deal was found by Cheapflights users on 11/15. 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.
Wed 12/1712:59 amPHX - ISP
1 stop8h 26mFrontier
Sun 1/42:04 pmISP - PHX
1 stop11h 47mFrontier
Deal found 11/15$378
This Frontier deal was found by Cheapflights users on 11/16. 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.
Wed 12/1712:59 amPHX - ISP
1 stop8h 26mFrontier
Fri 12/191:27 pmISP - PHX
1 stop12h 22mFrontier
Deal found 11/16$382
This CheapOair deal was found by Cheapflights users on 11/16. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/2710:55 pmPHX - ISP
1 stop9h 42mFrontier
Mon 12/19:02 amISP - PHX
1 stop16h 09mFrontier
Deal found 11/16$402

Cheapflights Fare Finder

 
Customize your flight search to find flights from Sky Harbor Intl to Islip 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 November 17, 2025.
Use the filters below to find and compare flights from Phoenix Sky Harbor Intl Airport to Islip that are best for you.

Fly from

Sky Harbor Intl

Fly to

Islip

Route

Depart

Return

Price

PhoenixIslip

PHX - ISP

PHXISP

Phoenix Sky Harbor Intl

Wed 12/17

12:59 am-11:25 am

1 stop8h 26m

Islip Long Island

Mon 1/5

2:04 pm-11:49 pm

1 stop11h 45m

$144

PhoenixIslip

PHX - ISP

PHXISP

Phoenix Sky Harbor Intl

Wed 12/10

7:00 am-10:44 pm

2 stops13h 44m

Islip Long Island

Thu 12/11

10:19 am-12:28 am

2 stops16h 09m

$217

PhoenixIslip

PHX - ISP

PHXISP

Phoenix Sky Harbor Intl

Tue 3/3

11:59 pm-10:40 am

1 stop8h 41m

Islip Long Island

Thu 3/5

10:42 am-10:50 pm

1 stop14h 08m

$252

PhoenixIslip

PHX - ISP

PHXISP

Phoenix Sky Harbor Intl

Sat 12/20

12:59 am-1:09 pm

1 stop10h 10m

Islip Long Island

Mon 1/5

2:04 pm-11:49 pm

1 stop11h 45m

$273

PhoenixIslip

PHX - ISP

PHXISP

Phoenix Sky Harbor Intl

Mon 12/29

12:59 am-11:25 am

1 stop8h 26m

Islip Long Island

Sun 1/4

8:35 pm-11:49 pm

1 stop29h 14m

$308

PhoenixIslip

PHX - ISP

PHXISP

Phoenix Sky Harbor Intl

Tue 12/30

12:59 am-4:37 pm

1 stop13h 38m

Islip Long Island

Sun 1/4

8:35 pm-11:49 pm

1 stop29h 14m

$308

PhoenixIslip

PHX - ISP

PHXISP

Phoenix Sky Harbor Intl

Wed 12/10

7:00 am-10:44 pm

2 stops13h 44m

Islip Long Island

Thu 12/11

2:19 pm-1:04 pm

1 stop24h 45m

$325

PhoenixIslip

PHX - ISP

PHXISP

Phoenix Sky Harbor Intl

Wed 12/17

12:59 am-11:25 am

1 stop8h 26m

Islip Long Island

Sun 12/21

8:35 pm-11:49 pm

1 stop29h 14m

$362

PhoenixIslip

PHX - ISP

PHXISP

Phoenix Sky Harbor Intl

Wed 12/17

12:59 am-11:25 am

1 stop8h 26m

Islip Long Island

Sun 1/4

2:04 pm-11:51 pm

1 stop11h 47m

$378

PhoenixIslip

PHX - ISP

PHXISP

Phoenix Sky Harbor Intl

Wed 12/17

12:59 am-11:25 am

1 stop8h 26m

Islip Long Island

Fri 12/19

1:27 pm-11:49 pm

1 stop12h 22m

$382

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/15

Showing 1-10 of 22 results
1
2
3

Compare providers for flights from Sky Harbor Intl to Islip

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 Sky Harbor Intl to Islip in November.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Phoenix Sky Harbor Intl Airport-Islip, New York flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Phoenix Sky Harbor Intl Airport-Islip, New York flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Phoenix Sky Harbor Intl Airport-Islip, New York flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Phoenix Sky Harbor Intl Airport-Islip, New York flights, Cheapflights users trust eDreams the most. eDreams 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 Phoenix Sky Harbor Intl Airport-Islip, New York 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 Sky Harbor Intl to Islip

Have a flexible travel schedule? Discover the best time to fly to Islip from Sky Harbor Intl 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 Phoenix Sky Harbor Intl Airport to Islip

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

Currently, March is the cheapest month in which you can book a flight from Phoenix Sky Harbor Intl Airport to Islip, New York (average of $109). Flying from Phoenix Sky Harbor Intl Airport to Islip, New York in June is currently the most expensive (average of $199). 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 PHX to ISP?

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

Unlike at noon, when flights are generally more expensive, you can save up to 61% on flights from Phoenix Sky Harbor Intl Airport to Islip, New York by exploring options for tickets in the evening.

Reviews of airlines servicing Islip

Get insights into the airlines that provide service to Islip. 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 Islip. Reviews last updated November 17, 2025.
Read through reviews of airlines operating flights from Phoenix Sky Harbor Intl Airport to Islip, such as Southwest. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,245 reviews

Crew

8.6

Overall

8.0

Boarding

8.1

Entertainment

7.5

Comfort

8.0

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
4,245 reviews
Southwest
8.0
Very good
4,245 reviews

Crew

8.6

Overall

8.0

Boarding

8.1

Entertainment

7.5

Comfort

8.0

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 Sky Harbor Intl to Islip. 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 into for flights to Islip from Phoenix Sky Harbor Intl?

    For a flight from Phoenix Sky Harbor Intl to Islip, you will be flying into Long Island. Islip Long Island (ISP) is just 7.2 mi from the center of the city. Long Island is the only Islip airport and it handles 0 inbound flights from Phoenix Sky Harbor Intl per day. 1 airline has flights to Islip Long Island from Phoenix Sky Harbor Intl on a regular basis.

  • How long is the flight from Phoenix Sky Harbor Intl Airport to Islip, New York?

    Airlines like Frontier fly from Phoenix Sky Harbor Intl Airport to Islip, New York in about 8h 26m. The time it takes to get you to your destination can typically vary by up to . The distance between Phoenix Sky Harbor Intl Airport and Islip, New York is about 2182 mi.

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

    Currently priced at $350, Southwest will fly you from Phoenix Sky Harbor Intl Airport to Islip, New York and back. In addition to Southwest, many other airlines offer competitively priced options for your trip. This flight start at 17% lower than the current average price 3 months from now.

  • Can I find deals for flights from Sky Harbor Intl to Islip that include hotel bookings?

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

  • How can I find direct flights from Sky Harbor Intl to Islip?

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

  • Can I find deals for business class flights from Sky Harbor Intl to Islip?

    Yes. Cheapflights offers flight deals from Sky Harbor Intl to Islip 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 Phoenix Sky Harbor Intl Airport to Islip, New York?

    Currently, March is the cheapest month in which you can book a flight from Phoenix Sky Harbor Intl Airport to Islip, New York (average of $109). Flying from Phoenix Sky Harbor Intl Airport to Islip, New York in June is currently the most expensive (average of $199). 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

Traveling to a place near Islip?

Book flights to Islip if you plan to visit one of these locations
Riverhead
Southampton

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.

Top airline flying from Sky Harbor Intl to Islip

Discover the top airline that operate flights from Sky Harbor Intl to Islip. 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 November 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
SouthwestCheapest$350Average$446FlexibilityNo cancel feeOn-time63%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.