ISP - PHX

$81 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 2/9. 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
Travelers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

Save 24% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Bundle and saveSave money when you bundle your flight + hotel.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Everything you should know

Cheapest round-trip
$313
Overall average: $444
Frontier
Sat 2/21Tue 2/24
ISP - PHX • 1 stop
Cheapest one-way
$81
Frontier
Mon 2/9
ISP - PHX • 1 stop
Top airlines
Frontier
Cheapest • from $313 (round-trip)
Southwest
Best reviews • 7.9 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to travel
April
Cheapest • 38% price drop
January
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Start a new search
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

Sat, Feb 21 - Tue, Feb 24
Frontier Logo
8:23 pm - 5:57 pm
ISP
-
PHX
23h 34m1 stop
Frontier Logo
11:59 pm - 1:13 pm
PHX
-
ISP
11h 14m1 stop
$313Frontier
Thu, Jan 22 - Tue, Jan 27
Southwest Logo
6:00 am - 11:50 am
ISP
-
PHX
7h 50m1 stop
Southwest Logo
1:25 pm - 9:55 pm
PHX
-
ISP
6h 30m1 stop
$380Southwest
Thu, Jan 22 - Tue, Jan 27
Southwest Logo
6:00 am - 11:50 am
ISP
-
PHX
7h 50m1 stop
Southwest Logo
9:40 am - 9:55 pm
PHX
-
ISP
10h 15m2 stops
$385Southwest
Thu, Dec 25 - Wed, Dec 31
Frontier Logo
12:20 pm - 11:49 pm
ISP
-
PHX
13h 29m1 stop
Frontier Logo
12:59 am - 11:25 am
PHX
-
ISP
8h 26m1 stop
$388Frontier
Thu, Jan 22 - Tue, Jan 27
Southwest Logo
3:45 pm - 10:45 pm
ISP
-
PHX
9h 00m2 stops
Southwest Logo
10:35 am - 9:55 pm
PHX
-
ISP
9h 20m2 stops
$390Southwest
Thu, Dec 25 - Sun, Dec 28
Frontier Logo
12:20 pm - 11:49 pm
ISP
-
PHX
13h 29m1 stop
Frontier Logo
12:59 am - 1:09 pm
PHX
-
ISP
10h 10m1 stop
$413Frontier
Thu, Feb 19 - Mon, Feb 23
JetBlue Logo
1:26 pm - 10:49 pm
ISP
-
PHX
11h 23m1 stop
JetBlue Logo
11:05 pm - 10:02 am
PHX
-
ISP
8h 57m1 stop
$424JetBlue
Thu, Jan 15 - Sun, Jan 18
Southwest Logo
11:50 am - 8:10 pm
ISP
-
PHX
10h 20m2 stops
Southwest Logo
5:30 am - 4:15 pm
PHX
-
ISP
8h 45m1 stop
$425Southwest
Thu, Jan 15 - Sun, Jan 18
Southwest Logo
11:50 am - 8:10 pm
ISP
-
PHX
10h 20m2 stops
Southwest Logo
11:40 am - 9:55 pm
PHX
-
ISP
8h 15m2 stops
$430Southwest
Thu, Dec 25 - Mon, Dec 29
Frontier Logo
12:20 pm - 11:49 pm
ISP
-
PHX
13h 29m1 stop
Frontier Logo
12:59 am - 11:25 am
PHX
-
ISP
8h 26m1 stop
$434Frontier
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’s the cheapest day of the week to fly from Islip to Phoenix?

The average price of all round-trip flights from Islip to Phoenix Sky Harbor Intl Airport clicked on KAYAK for each day over the last 12 months.

Your flight ticket price will generally be cheaper if you fly to Phoenix on a Friday and more expensive on a Sunday. On your return trip to Islip, you should consider flying back on a Monday, and avoid Wednesdays for better deals.

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 April, where tickets cost $293 (return) on average. On the other hand, the most expensive months are December and June, where the average cost of round-trip tickets is $733 and $712 respectively.

Good to know

Low seasonJuly
Cheapest flight$81
Best time to beat the crowds but there is an average 16% 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 $81 for a one-way ticket and $313 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.
7.9
SouthwestOverall score based on 4252 reviews
8.1Boarding
7.0Food
7.5Entertainment
8.0Comfort
8.6Crew
Airline reviews

The boarding and seat assignment system no longer works for me, but I know it is being replaced. Otherwise, I am good with the overall experience.

8.0 ExcellentRussell, Dec 2025
SAN - OAK
Read more Southwest reviews

The boarding and seat assignment system no longer works for me, but I know it is being replaced. Otherwise, I am good with the overall experience.

The lead steward kept singing about "San Francisco" and hotel California---more annoying than humorous....needs work. Flight was smooth and on time.

Still a fan of open seating. Flight was on schedule and arrived on time. The 737 MAX is very comfortable.

Airline travel is always too cramped to really be pleasant, but the cabin crew on this flight did a pretty good job of making up for it by putting on some music during boarding and sprinkling a few funny remarks into the safety briefing and announcements, and just generally being friendly and helpful. It definitely reminded me of why I prefer the in-flight experience on Southwest!

No delays and arrived to destination 30 min early. Staff was super friendly.

San Diego airport is brand new, spacious, airy and very smooth checkin at SW baggage drop.

It was rough. The staff was unprofessional, the choice of on board drinks terrible, it was cramped in space at every airport, they always ran out of overhead bin space so they pressured people to check bags for free or we couldn’t leave on the plane— so I did check my bag to help, and they nearly lost my bag. My bag did not arrive on the luggage belt, another man on my flight and I had to waste our time going to the baggage office to search for our bags. I would only fly southwest again if it was my last choice. Also, my flights were consistently delayed over and over again— at one point they straight up told us we were waiting for the pilot to arrive.

Crew could have been friendlier, maybe I'm spoiled by SW crews. In flight wifi was good. Would be nice to have more food offerings on a 4 plus hour flight

Had to get off plane from prior flight even though I had to reboard same plane to continue to my final destination.

Everything a cheap airline should be at normal airline rates.

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

Information on your arrival and departure airports