$169 Cheap Flights from Islip (ISP) to Phoenix (PHX)

View $169 flight on Thu, Sep 11, 2025Opens in a new window

Popular airlines from MacArthur Airport (ISP) to Phoenix Sky Harbor Intl. Airport (PHX)

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Cheap Flights from Islip to Phoenix (ISP-PHX)

Prices were available within the past 7 days and start at $169 for one-way flights and $321 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Frontier Airlines
Wed, Jul 16 - Thu, Jul 31
ISP
Islip
PHX
Phoenix
$321 Roundtrip, found 13 hours ago
$321
Roundtrip
found 13 hours ago
Select Frontier Airlines flight, departing Wed, Jul 16 from Islip to Phoenix, returning Thu, Jul 31, priced at $321 found 13 hours ago
Frontier Airlines
Wed, Jul 16 - Thu, Aug 7
ISP
Islip
PHX
Phoenix
$328 Roundtrip, found 2 days ago
$328
Roundtrip
found 2 days ago
Select Frontier Airlines flight, departing Wed, Jul 16 from Islip to Phoenix, returning Thu, Aug 7, priced at $328 found 2 days ago
Frontier Airlines
Wed, Jul 9 - Fri, Jul 25
ISP
Islip
PHX
Phoenix
$333 Roundtrip, found 2 days ago
$333
Roundtrip
found 2 days ago
Select Frontier Airlines flight, departing Wed, Jul 9 from Islip to Phoenix, returning Fri, Jul 25, priced at $333 found 2 days ago
Southwest Airlines
Tue, Sep 16 - Tue, Sep 23
ISP
Islip
PHX
Phoenix
$337 Roundtrip, found 3 days ago
$337
Roundtrip
found 3 days ago
Select Southwest Airlines flight, departing Tue, Sep 16 from Islip to Phoenix, returning Tue, Sep 23, priced at $337 found 3 days ago
Frontier Airlines
Mon, Oct 13 - Sun, Oct 26
ISP
Islip
PHX
Phoenix
$341 Roundtrip, found 13 hours ago
$341
Roundtrip
found 13 hours ago
Select Frontier Airlines flight, departing Mon, Oct 13 from Islip to Phoenix, returning Sun, Oct 26, priced at $341 found 13 hours ago
Southwest Airlines
Tue, Sep 16 - Tue, Sep 23
ISP
Islip
PHX
Phoenix
$342 Roundtrip, found 3 days ago
$342
Roundtrip
found 3 days ago
Select Southwest Airlines flight, departing Tue, Sep 16 from Islip to Phoenix, returning Tue, Sep 23, priced at $342 found 3 days ago
Frontier Airlines
Thu, Jul 17 - Thu, Jul 31
ISP
Islip
PHX
Phoenix
$346 Roundtrip, found 13 hours ago
$346
Roundtrip
found 13 hours ago
Select Frontier Airlines flight, departing Thu, Jul 17 from Islip to Phoenix, returning Thu, Jul 31, priced at $346 found 13 hours ago
Southwest Airlines
Tue, Sep 16 - Tue, Sep 23
ISP
Islip
PHX
Phoenix
$347 Roundtrip, found 3 days ago
$347
Roundtrip
found 3 days ago
Select Southwest Airlines flight, departing Tue, Sep 16 from Islip to Phoenix, returning Tue, Sep 23, priced at $347 found 3 days ago
Southwest Airlines
Sat, Oct 4 - Thu, Oct 9
ISP
Islip
PHX
Phoenix
$353 Roundtrip, found 9 hours ago
$353
Roundtrip
found 9 hours ago
Select Southwest Airlines flight, departing Sat, Oct 4 from Islip to Phoenix, returning Thu, Oct 9, priced at $353 found 9 hours ago
JetBlue Airways
Tue, Oct 28 - Tue, Nov 4
ISP
Islip
PHX
Phoenix
$447 Roundtrip, found 3 days ago
$447
Roundtrip
found 3 days ago
Select JetBlue Airways flight, departing Tue, Oct 28 from Islip to Phoenix, returning Tue, Nov 4, priced at $447 found 3 days ago

Find the cheapest month to fly from Islip (ISP) to Phoenix (PHX)

February is typically the cheapest month to fly

From $160 - $1,385 per traveler.

Graph displaying average flight prices per month

Flights from Islip (ISP) to Phoenix (PHX)
Origin airport
MacArthur
Destination airport
Sky Harbor Intl.
Airlines serving
Frontier Airlines, JetBlue Airways, Southwest Airlines
Roundtrip price
$321
Distance
2184 mi
Average flight time
7 hours 5 mins

Islip to Phoenix Flights

The cheapest times to fly from Islip to Phoenix

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Islip to Phoenix are during the month of July. You can find some of the cheapest flights from Islip to Phoenix with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Islip to Phoenix

Sunday is one of the best days to book for cheap flights from Islip to Phoenix: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Islip to Phoenix

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Islip to Phoenix in 2025. You can also book with separate airlines for your outbound and return journeys, from $169 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Islip to Phoenix flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Islip to Phoenix airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from MacArthur Airport (ISP) to Sky Harbor Intl. Airport (PHX) cost?
Discover the latest flight deals from ISP to PHX by entering your preferred travel dates and searching on Expedia. Easily compare prices by departure date if you have flexibility with your schedule and use handy filters to explore prices for your preferred journey. As a member of One Key™, our free loyalty program, you can use Price Tracking to watch fares and receive notifications if prices go up or down.
What is the cheapest month to fly from ISP to PHX?
The cheapest flights from ISP to PHX are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
Which airlines fly direct from MacArthur Airport (ISP) to Sky Harbor Intl. Airport (PHX)?
You can't catch a direct flight to Sky Harbor Intl. Airport (PHX) from Islip, NY (ISP-MacArthur). However, you can seamlessly travel to Phoenix without any layovers by departing from John F. Kennedy Intl. Airport (JFK).
What is the cheapest airline that flies from ISP to PHX?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that'll take you from ISP to PHX. Sort your results by "Price (lowest to highest)" to snap up a great deal.
How many flights per day from MacArthur Airport (ISP) to Sky Harbor Intl. Airport (PHX)?
You'll have to book a flight with a layover when traveling from MacArthur Airport (ISP) to Sky Harbor Intl. Airport (PHX). Direct flights don't operate daily on this route. However, simply filter your search to include one or more stops to find an option that works for you.
What day of the week has the most flights from ISP to PHX?
Typically you'll find the largest variety of flight choices on a Friday. Tuesdays tend to be the quietest.* But this can vary depending on the season, carrier and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from MacArthur Airport (ISP) to Sky Harbor Intl. Airport (PHX)?
To avoid possible delays on the MacArthur Airport (ISP) to Sky Harbor Intl. Airport (PHX) route, aim to travel before 3 PM. Departures after this time are 22% more likely to be canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from MacArthur Airport (ISP) to Sky Harbor Intl. Airport (PHX) last-minute?
Booking your plane ticket from ISP to PHX right before your getaway is typically more expensive. However, if you're flexible with your travel dates and times, you could grab a cheap last-minute fare.
Is it cheaper to book an ISP to PHX flight and hotel package?
Compared with arranging hotels and flights separately, booking an ISP to PHX flight and hotel package with Expedia could lead to significant savings. Better yet, having everything in one place will take the stress out of travel planning. Simply secure your flights and choose from our wide range of hotels, then customize your trip with other add-ons like activities, tours and car rentals.
Can I cancel or change the date of my flight from MacArthur Airport (ISP) to Sky Harbor Intl. Airport (PHX)?
Usually, it's possible to reschedule or cancel your ISP to PHX flight. However, if it's been more than 24 hours since booking, additional fees may apply. Check your airline's policies in your itinerary to see what changes are allowed and if any costs are involved. You'll also find more information on our Customer Service portal.

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*Available to One Key members.