ISP - PHX

$110 Find Cheap Flights from Islip to Phoenix

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Islip to Phoenix departing on 4/17. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Phoenix Sky Harbor Intl Airport

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Islip to Phoenix, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Islip to Phoenix, as well as popular online travel agencies
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Everything you should know

Cheapest round-trip
$220
Overall average: $493
Frontier
Thu 4/23Sat 4/25
ISP - PHX • 1 stop
Cheapest one-way
$110
Frontier
Fri 4/17
ISP - PHX • 1 stop
Top airlines
Frontier
Cheapest • from $220 (round-trip)
Southwest
Best reviews • 8.0 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
Not available
There are currently no direct flights between Islip and Phoenix. You'll need at least 1 connection.
Insights
Insights
Insights
Insights
Top layover airports
Orlando (MCO)
Cheapest • Avg $248 (round-trip)
Baltimore (BWI)
Shortest trip • 8h 22m (one-way)
Insights
Insights
Insights
Insights
When to travel
August
Cheapest • 38% price drop
April
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Phoenix!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Islip to Phoenix (ISP-PHX)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Islip to Phoenix that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Islip to Phoenix

Thu, Apr 23 - Sat, Apr 25
Frontier Logo
4:07 pm - 11:18 pm
ISP
-
PHX
10h 11m
1 stop
Frontier Logo
12:25 am - 9:28 am
PHX
-
ISP
30h 03m
1 stop
$220Frontier
Sun, May 10 - Wed, May 13
Frontier Logo
11:00 am - 10:45 am
ISP
-
PHX
26h 45m
1 stop
Frontier Logo
12:23 am - 10:05 am
PHX
-
ISP
30h 42m
1 stop
$241Frontier
Sun, May 3 - Tue, May 5
Frontier Logo
4:07 pm - 11:29 pm
ISP
-
PHX
10h 22m
1 stop
Frontier Logo
12:23 am - 10:05 am
PHX
-
ISP
30h 42m
1 stop
$265Frontier
Thu, Apr 30 - Mon, May 4
Frontier Logo
4:07 pm - 10:25 pm
ISP
-
PHX
9h 18m
1 stop
Frontier Logo
12:23 am - 11:00 am
PHX
-
ISP
7h 37m
1 stop
$316Frontier
Fri, Apr 10 - Fri, Apr 17
Southwest Logo
4:30 pm - 11:50 pm
ISP
-
PHX
10h 20m
1 stop
Southwest Logo
12:50 pm - 11:30 pm
PHX
-
ISP
7h 40m
1 stop
$317Southwest
Fri, Apr 10 - Fri, Apr 17
Southwest Logo
4:30 pm - 11:50 pm
ISP
-
PHX
10h 20m
1 stop
Southwest Logo
11:55 pm - 11:35 am
PHX
-
ISP
8h 40m
2 stops
$322Southwest
Tue, Apr 28 - Thu, Apr 30
Southwest Logo
9:00 am - 3:00 pm
ISP
-
PHX
9h 00m
2 stops
Southwest Logo
5:05 am - 8:25 pm
PHX
-
ISP
12h 20m
1 stop
$328Southwest
Thu, May 14 - Sat, May 16
Frontier Logo
11:00 am - 10:45 am
ISP
-
PHX
26h 45m
1 stop
Frontier Logo
12:23 am - 10:05 am
PHX
-
ISP
30h 42m
1 stop
$337Frontier
Sun, May 3 - Wed, May 6
Southwest Logo
5:25 pm - 12:25 am
ISP
-
PHX
10h 00m
1 stop
Southwest Logo
9:50 am - 10:10 pm
PHX
-
ISP
9h 20m
2 stops
$347Southwest
Thu, Apr 30 - Mon, May 4
Frontier Logo
4:07 pm - 10:25 pm
ISP
-
PHX
9h 18m
1 stop
Frontier Logo
12:23 am - 11:00 am
PHX
-
ISP
7h 37m
1 stop
$355Frontier
Booking Insights

KAYAK's insights & trends for Islip to Phoenix flights

Get data-powered insights and trends into flights from Islip to Phoenix to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest month to fly from Islip to Phoenix Sky Harbor Intl Airport?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Islip to Phoenix Sky Harbor Intl Airport, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Islip to Phoenix Sky Harbor Intl Airport is August, where tickets cost $332 (return) on average. On the other hand, the most expensive months are June and December, where the average cost of round-trip tickets is $936 and $733 respectively.

Find deals

Good to know

Low seasonMarch
Cheapest flight$110
Best time to beat the crowds but there is an average 12% increase in price.
Most popular time to fly and prices are also 8% lower on average.
Flight from Islip to Phoenix

When to book flights from Islip to Phoenix

Are your dates flexible? Find out the best times to travel from Islip to Phoenix based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking Islip to Phoenix flights

  • What is the cheapest flight from Islip to Phoenix Sky Harbor Intl Airport?

    In the last 3 days, the lowest price for a flight from Islip to Phoenix Sky Harbor Intl Airport was $110 for a one-way ticket and $220 for a round-trip.

  • Do I need a passport to fly between Islip and Phoenix?

    A passport is not required to fly from Islip to Phoenix.

  • Which airports will I be using when flying from Islip to Phoenix?

    Islip airport is called Islip Long Island and the only airport in Phoenix is Phoenix Sky Harbor Intl.

  • Which aircraft models fly most regularly from Islip to Phoenix?

    We unfortunately don’t have that data for this specific route.

  • How does KAYAK find such low prices on flights from Islip to Phoenix?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Islip to Phoenix.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Islip to Phoenix?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Phoenix from Islip is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Islip to Phoenix?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Phoenix with an airline and back to Islip with another airline. Booking your flights between Islip and PHX can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Islip to Phoenix?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Phoenix from Islip up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airline flying from Islip to Phoenix

 
See real verified KAYAK customer reviews for airlines flying from Islip to Phoenix. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Islip to Phoenix? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
SouthwestOverall score based on 4318 reviews
8.1Boarding
8.6Crew
7.0Food
8.0Comfort
7.5Entertainment
Airline reviews

Long layover between flights to Long Island from BWI - need better coordination between flights

4.0 OkayKenny, Mar 2026
TPA - BWI
Read more Southwest reviews

Long layover between flights to Long Island from BWI - need better coordination between flights

I elected to pay for the upgrades and found very little difference

The new seating arrangement is so over priced for what you get.

The problem with the seat assignments is that there were a lot of rows in the front that were empty but my row at the back was full. Just not so pleasant.

No food or entertainment, just a quick 40 minute flight. A little bumpy due to Santa Ana winds but pilot has no control over that. Good flight and landing!

Good but I prefer choose your own seat. With the new assigned seats they should board from the back I see no advantage to this new boarding. Just like every other airline

I realize they are still working out kinks with the new boarding process, but by the time I boarded in group 5, most of the bins were full. All airlines should better enforce small bags and jackets going under the seats until everyone has boarded.

WiFi was not working and didn’t have a beverage service

Snacks are always pretzels. Why can't you also offer peanuts ?

Flight boarded late after announcing on time boarding. Flight arrived only a little late despite late departure. Had trouble connecting to WiFi

Everything you need to know for your flight from Islip to Phoenix

Information on your arrival and departure airports

Islip (ISP)
Sky Harbor Intl (PHX)