PHX - ISP

$111 Find Cheap Flights from Phoenix to Islip

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Phoenix to Islip departing on 3/31. 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 Islip

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

Cheapest round-trip
$270
Frontier
Thu 2/26Mon 3/2
PHX - ISP • 1 stop
Cheapest one-way
$111
Frontier
Tue 3/31
PHX - ISP • 1 stop
Top airlines
Frontier
Cheapest • from $270 (round-trip)
Southwest
Best reviews • 8.0 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
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Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Phoenix to Islip (PHX-ISP)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Phoenix to Islip 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 Phoenix to Islip

Thu, Feb 26 - Mon, Mar 2
Frontier Logo
11:59 pm - 2:39 pm
PHX
-
ISP
12h 40m
1 stop
Frontier Logo
8:23 am - 6:07 pm
ISP
-
PHX
11h 44m
1 stop
$270Frontier
Thu, Feb 26 - Mon, Mar 2
Frontier Logo
11:59 pm - 2:39 pm
PHX
-
ISP
12h 40m
1 stop
Frontier Logo
8:23 am - 6:07 pm
ISP
-
PHX
11h 44m
1 stop
$287Frontier
Wed, Feb 25 - Sun, Mar 1
Frontier Logo
11:59 pm - 2:39 pm
PHX
-
ISP
12h 40m
1 stop
Frontier Logo
5:51 pm - 6:07 pm
ISP
-
PHX
26h 16m
1 stop
$321Frontier
Sat, Feb 14 - Wed, Feb 18
Frontier Logo
8:04 pm - 7:38 am
PHX
-
ISP
33h 34m
2 stops
Frontier Logo
2:03 pm - 8:26 pm
ISP
-
PHX
32h 23m
1 stop
$324Frontier
Wed, Apr 1 - Mon, Apr 6
Southwest Logo
6:05 am - 4:05 pm
PHX
-
ISP
7h 00m
1 stop
Southwest Logo
5:55 pm - 12:05 am
ISP
-
PHX
9h 10m
1 stop
$380Southwest
Wed, Apr 1 - Mon, Apr 6
Southwest Logo
5:05 am - 4:05 pm
PHX
-
ISP
8h 00m
2 stops
Southwest Logo
5:55 pm - 12:05 am
ISP
-
PHX
9h 10m
1 stop
$385Southwest
Wed, Apr 22 - Sat, Apr 25
Southwest Logo
7:05 am - 6:30 pm
PHX
-
ISP
8h 25m
2 stops
Southwest Logo
6:00 am - 12:40 pm
ISP
-
PHX
9h 40m
2 stops
$390Southwest
Sat, Feb 14 - Wed, Feb 18
Frontier Logo
11:59 pm - 7:38 am
PHX
-
ISP
29h 39m
1 stop
Frontier Logo
2:03 pm - 8:26 pm
ISP
-
PHX
32h 23m
1 stop
$399Frontier
Thu, May 28 - Mon, Jun 1
Southwest Logo
5:05 am - 4:30 pm
PHX
-
ISP
8h 25m
1 stop
Southwest Logo
4:30 pm - 8:40 pm
ISP
-
PHX
7h 10m
1 stop
$442Southwest
Thu, May 28 - Mon, Jun 1
Southwest Logo
11:55 pm - 11:50 am
PHX
-
ISP
8h 55m
2 stops
Southwest Logo
4:30 pm - 8:40 pm
ISP
-
PHX
7h 10m
1 stop
$448Southwest
Booking Insights

KAYAK's insights & trends for Phoenix to Islip flights

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

Which airlines provide the cheapest flights from Phoenix to Islip?

The cheapest round-trip price for the route for each airline clicked by KAYAK users in the last 72 hours.

In the past 3 days, the cheapest round-trip tickets from Phoenix to Islip were found on Frontier ($270) and Southwest ($380).

Find deals

Good to know

Low seasonMarch
Cheapest flight$111
Best time to beat the crowds with an average 18% drop in price.
Most popular time to fly with an average 7% increase in price.
Flight from Phoenix to Islip

When to book flights from Phoenix to Islip

Are your dates flexible? Find out the best times to travel from Phoenix to Islip 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 Phoenix to Islip flights

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

    In the last 3 days, the lowest price for a flight from Phoenix Sky Harbor Intl Airport to Islip was $111 for a one-way ticket and $270 for a round-trip.

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

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

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

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

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

    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 Phoenix to Islip.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Islip from Phoenix 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 Phoenix to Islip?

    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 Islip with an airline and back to Phoenix with another airline. Booking your flights between Phoenix and ISP 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 Phoenix to Islip?

    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 Islip from Phoenix 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 Phoenix to Islip

 
See real verified KAYAK customer reviews for airlines flying from Phoenix to Islip. 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 Phoenix to Islip? 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 4267 reviews
8.1Boarding
8.0Comfort
7.5Entertainment
8.6Crew
7.0Food
Airline reviews

All good except once again bags took an hour at Midway Airport Happens all the time. Ridiculous

10.0 ExcellentAnonymous, Jan 2026
PHX - MDW
Read more Southwest reviews

All good except once again bags took an hour at Midway Airport Happens all the time. Ridiculous

Everything went smoothly and we even arrived a little bit early.

Great vacation. Can't wait till next year for another one.

Great flight but super high price. Glad it was a business trip and not personal

On time. Friendly staff. Took to long to pre bord all the specialty groups. Cramped small plane

The seats were comfortable, and the boarding process was pretty smooth.

3 hour delay. Had to change plans and was still delayed.

The staff was very friendly, professional, and courteous. The overall flight was a great experience.

The crew canceled the complementary snack and drink in anticipation of turbulence that never materialized. I was counting on the drink (water) to take the the doses of medication - prescribed for my heart condition - that were due during the flight. Since no snack or meal was served on this flight, I cannot rate the food quality. Otherwise, this flight was excellent.

Departure was delayed more than 1/2 hour while we waited for luggage (only) transfer from another flight/plane. Once approved for takeoff, the flight was excellent.

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

Information on your arrival and departure airports

Phoenix (PHX)
Islip (ISP)