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$109+ Cheap flights from Sky Harbor Intl (PHX) to Islip (ISP)

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 10/23. Fares are subject to change and may not be available on all flights or dates of travel.
PHX — ISP
Oct 17 — Oct 241
Fri 10/17
Fri 10/24
1 adult, Economy
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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 September 17, 2025.

Round-trip from

$218
(CheapOair)

One-way from

$109
(Cheapflightsfares)

Popular in

July

Cheapest in

December

Average price

$428
From Phoenix Sky Harbor Intl to Islip Long Island
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One-way flight from Phoenix Sky Harbor Intl to Islip Long Island
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Highest demand for flights based on searches. 14% potential increase in price ($64 potential increase over avg. RT price).
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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 September 2025
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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 September 17, 2025.

This CheapOair 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/1410:59 pmPHX - ISP
1 stop8h 58mFrontier
Tue 10/219:37 pmISP - PHX
1 stop18h 40mFrontier
Deal found 9/15$218
This CheapOair 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/2110:59 pmPHX - ISP
1 stop8h 58mFrontier
Sat 10/254:58 pmISP - PHX
1 stop23h 19mFrontier
Deal found 9/16$220
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 10/1610:59 pmPHX - ISP
1 stop8h 38mFrontier
Thu 10/239:37 pmISP - PHX
1 stop20h 42mFrontier
Deal found 9/16$223
This CheapOair 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/710:59 pmPHX - ISP
1 stop8h 58mFrontier
Mon 10/204:58 pmISP - PHX
1 stop23h 19mFrontier
Deal found 9/16$241
This CheapOair 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/1310:55 pmPHX - ISP
1 stop18h 47mFrontier
Mon 10/204:58 pmISP - PHX
1 stop23h 19mFrontier
Deal found 9/15$242
This CheapOair 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/1011:24 pmPHX - ISP
1 stop8h 13mFrontier
Tue 10/149:37 pmISP - PHX
1 stop18h 40mFrontier
Deal found 9/15$243
This CheapOair 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/1210:59 pmPHX - ISP
1 stop8h 38mFrontier
Wed 10/224:58 pmISP - PHX
1 stop23h 19mFrontier
Deal found 9/14$244
This CheapOair 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/810:59 pmPHX - ISP
1 stop18h 43mFrontier
Mon 10/204:58 pmISP - PHX
1 stop23h 19mFrontier
Deal found 9/16$252
This CheapOair 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/1510:59 pmPHX - ISP
1 stop18h 43mFrontier
Wed 10/224:58 pmISP - PHX
1 stop23h 19mFrontier
Deal found 9/15$254
This Priceline 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/311:07 pmPHX - ISP
1 stop11h 55mJetBlue
Tue 11/181:57 pmISP - PHX
1 stop10h 52mJetBlue
Deal found 9/16$262

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 September 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

Tue 10/14

10:59 pm-10:57 am

1 stop8h 58m

Islip Long Island

Tue 10/21

9:37 pm-1:17 pm

1 stop18h 40m

$218

PhoenixIslip

PHX - ISP

PHXISP

Phoenix Sky Harbor Intl

Tue 10/21

10:59 pm-10:57 am

1 stop8h 58m

Islip Long Island

Sat 10/25

4:58 pm-1:17 pm

1 stop23h 19m

$220

PhoenixIslip

PHX - ISP

PHXISP

Phoenix Sky Harbor Intl

Thu 10/16

10:59 pm-10:37 am

1 stop8h 38m

Islip Long Island

Thu 10/23

9:37 pm-3:19 pm

1 stop20h 42m

$223

PhoenixIslip

PHX - ISP

PHXISP

Phoenix Sky Harbor Intl

Wed 12/10

11:30 pm-11:05 am

1 stop9h 35m

Islip Long Island

Mon 12/15

11:50 am-9:59 pm

1 stop12h 09m

$237

PhoenixIslip

PHX - ISP

PHXISP

Phoenix Sky Harbor Intl

Mon 12/8

11:30 pm-11:05 am

1 stop9h 35m

Islip Long Island

Fri 12/12

11:50 am-9:59 pm

1 stop12h 09m

$237

PhoenixIslip

PHX - ISP

PHXISP

Phoenix Sky Harbor Intl

Thu 12/11

11:30 pm-11:05 am

1 stop9h 35m

Islip Long Island

Mon 12/15

11:50 am-9:59 pm

1 stop12h 09m

$237

PhoenixIslip

PHX - ISP

PHXISP

Phoenix Sky Harbor Intl

Wed 10/22

10:59 pm-8:42 pm

1 stop18h 43m

Islip Long Island

Sun 10/26

9:47 pm-1:17 pm

1 stop18h 30m

$241

PhoenixIslip

PHX - ISP

PHXISP

Phoenix Sky Harbor Intl

Tue 10/7

10:59 pm-10:57 am

1 stop8h 58m

Islip Long Island

Mon 10/20

4:58 pm-1:17 pm

1 stop23h 19m

$241

PhoenixIslip

PHX - ISP

PHXISP

Phoenix Sky Harbor Intl

Fri 10/10

11:24 pm-10:37 am

1 stop8h 13m

Islip Long Island

Tue 10/14

9:37 pm-1:17 pm

1 stop18h 40m

$243

PhoenixIslip

PHX - ISP

PHXISP

Phoenix Sky Harbor Intl

Sun 10/12

10:59 pm-10:37 am

1 stop8h 38m

Islip Long Island

Wed 10/22

4:58 pm-1:17 pm

1 stop23h 19m

$244

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/15

Showing 1-10 of 14 results
1
2

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?

Currently, January is the cheapest month in which you can book a flight from Phoenix Sky Harbor Intl Airport to Islip (average of $108). Flying from Phoenix Sky Harbor Intl Airport to Islip in November is currently the most expensive (average of $213). 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 September 17, 2025.

Unlike at noon, when flights are generally more expensive, you can save up to 62% on flights from Phoenix Sky Harbor Intl Airport to Islip by exploring options for tickets in the afternoon.

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 September 17, 2025.
Read through reviews of airlines operating flights from Phoenix Sky Harbor Intl Airport to Islip, such as Southwest and Frontier. Reviews also offer insight into each airline's 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
Frontier
5.8
Fair
3,173 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 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. 2 airlines have 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?

    A quick flight from Phoenix Sky Harbor Intl Airport to Islip can take about 8h 58m. Frontier provides one of the quickest options available for as low as $218. Phoenix Sky Harbor Intl Airport and Islip are separated by a distance of 2182 mi. This flight may include one or multiple stops.

  • What are the cheapest airlines flying from Phoenix Sky Harbor Intl Airport to Islip round-trip?

    According to our current data, Frontier ($157), and Southwest ($350) offers the cheapest pricing from Phoenix Sky Harbor Intl Airport to Islip. Users have found that Frontier is 60% cheaper than the other options available to this destination.

  • 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?

    Currently, January is the cheapest month in which you can book a flight from Phoenix Sky Harbor Intl Airport to Islip (average of $108). Flying from Phoenix Sky Harbor Intl Airport to Islip in November is currently the most expensive (average of $213). 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

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Top 2 airlines flying from Sky Harbor Intl to Islip

Discover the top 2 airlines 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 September 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$157Average$207FlexibilityNo cancel feeOn-time62%
SouthwestCheapest$350Average$460FlexibilityNo cancel feeOn-time63%

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