PHX - ISP

$110 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 10/23. 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

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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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

Wed, Oct 22 - Sun, Oct 26
Frontier Logo
10:59 pm - 8:42 pmPHX-ISP
18h 43m1 stop
Frontier Logo
9:47 pm - 1:17 pmISP-PHX
18h 30m1 stop
$219Frontier
Find Deal
Thu, Oct 16 - Tue, Oct 21
Frontier Logo
10:59 pm - 10:37 amPHX-ISP
8h 38m1 stop
Frontier Logo
9:37 pm - 1:17 pmISP-PHX
18h 40m1 stop
$220Frontier
Find Deal
Fri, Nov 7 - Mon, Nov 10
Frontier Logo
8:43 pm - 10:55 amPHX-ISP
12h 12m2 stops
Frontier Logo
9:54 am - 11:03 pmISP-PHX
15h 09m2 stops
$239Frontier
Find Deal
Tue, Oct 21 - Sat, Oct 25
Frontier Logo
10:59 pm - 10:57 amPHX-ISP
8h 58m1 stop
Frontier Logo
4:58 pm - 1:17 pmISP-PHX
23h 19m1 stop
$242Frontier
Find Deal
Mon, Dec 8 - Fri, Dec 12
JetBlue Logo
11:40 pm - 11:18 amPHX-ISP
9h 38m1 stop
JetBlue Logo
12:15 pm - 10:40 pmISP-PHX
12h 25m1 stop
$354JetBlue
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Fri, Nov 7 - Sun, Nov 9
Southwest Logo
2:20 pm - 11:50 pmPHX-ISP
7h 30m1 stop
Southwest Logo
5:30 pm - 12:05 amISP-PHX
8h 35m1 stop
$377Southwest
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Fri, Nov 7 - Sun, Nov 9
Southwest Logo
1:50 pm - 11:50 pmPHX-ISP
8h 00m2 stops
Southwest Logo
5:30 pm - 12:05 amISP-PHX
8h 35m1 stop
$398Southwest
Find Deal
Fri, Dec 12 - Tue, Dec 16
JetBlue Logo
11:40 pm - 11:18 amPHX-ISP
9h 38m1 stop
JetBlue Logo
12:15 pm - 10:40 pmISP-PHX
12h 25m1 stop
$408JetBlue
Find Deal
Fri, Nov 7 - Sun, Nov 9
Breeze Airways Logo
1:49 pm - 11:00 amPHX-ISP
43h 11m3 stops
Breeze Airways Logo
7:36 pm - 12:13 pmISP-PHX
42h 37m3 stops
$895Breeze Airways
Find Deal
Wed, Oct 8 - Fri, Oct 10
Breeze Airways Logo
12:08 pm - 1:39 pmPHX-ISP
22h 31m2 stops
Breeze Airways Logo
8:47 pm - 12:07 pmISP-PHX
42h 20m3 stops
$932Breeze Airways
Find Deal

Everything you should know

Top airlines
Frontier
Cheapest • from $219 (round-trip)
Southwest
Best reviews • 8.0 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Cheapest round-trip
$219
Frontier
Wed 10/22Sun 10/26
PHX - ISP • 1 stop
Cheapest one-way
$110
Frontier
Thu 10/23
PHX - ISP • 1 stop
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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 Islip!
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.

What’s the cheapest day of the week to fly from Phoenix to Islip?

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

When flying from Phoenix to Islip, you should consider leaving on a Monday and avoid Wednesdays if you are looking for the best rates. For your return to Phoenix, you’ll find the best rates on Fridays and the most expensive ones on Sundays.

Good to know

Low seasonDecember
Cheapest flight$110
Best time to beat the crowds with an average 49% drop in price.
Most popular time to fly with an average 8% 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 $110 for a one-way ticket and $219 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.

  • Which is the best airline for flights from Phoenix to Islip, Southwest or Frontier?

    The two airlines most popular with KAYAK users for flights from Phoenix to Islip are Southwest and Frontier. With an average price for the route of $468 and an overall rating of 8.0, Southwest is the most popular choice. Frontier is also a great choice for the route, with an average price of $207 and an overall rating of 5.8.

  • 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 airlines 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 4248 reviews
7.5Entertainment
8.1Boarding
8.0Comfort
8.6Crew
7.0Food
Airline reviews

I wish they had movie screens in the headrests. The seats are much improved, more legroom and recently renovated. Bathroom was clean. Staff was outstanding!!

10.0 ExcellentG, Sep 2025LAS - ATL
Read more Southwest reviews

I wish they had movie screens in the headrests. The seats are much improved, more legroom and recently renovated. Bathroom was clean. Staff was outstanding!!

As always, the entire Southwest experience was wonderful, from online booking to flight to baggage retrieval. Very grateful.

The weather could have been better. There was a 40 minute ATC delay in SFO because of marine fog and a micro cell storm delayed landing and take-off at Nashville. The gate was changed 5 minutes from boarding from gate B3 to gate C23 at Nashville airport.

After being assaulted by a flight attendant I was then brushed off as oh well because he long braids didn’t mean to whip me in the eye. I have filed complaints and will see. But like any other issue I’ve had with kayak involved it’s been trash. Last time I’ll be using your app

AC sub par. WiFi not working correctly. Ac sucked. Seats very narrow.

Near 4 hour flight with only 1 service. Had to use call button to request water. Internet and power not working until into flight. Internet would stop working during flight.

Southwest's seats are the least comfortable I have ever sat in.

The cabin was quiet for the redeye flight. The area was clean. The staff was great. The 787 Max was in good condition. Drawbacks were that the seat widths were tight for some passengers. The seat padding was at best average and for a long flight uncomfortable.

Southwest like most American domestic airlines, is a mediocre airline. But it is among the cheapest. Oh well.

My flight was delayed 50 minutes and we were rushed to board to then sit for 15 minutes until the pilot arrived. Unacceptable since we could have waited to board. Also the delayed flight was updated AFTER we boarded to more than the 10 minutes as originally stated.

Seats were new and comfortable. Staff was fine. Missed my connection due to weather -which wasn’t their fault- but got no help at all. Gate staff sent me to customer service, which was and stayed unstaffed. Sign with QR code directed me to call or chat. Chat was useless. Call was returned after an hour. No itinerary offered by Frontier could get me home in less than 30 hours. Rebooked with another airline and got a partial refund that came to about 10 percent of what I paid to get home.

Finally a Frontier on time and efficient. I've had problems before with your airline, but this time everything went fine.

The experience was good. No frills but I got there safe and sound and on time.

Great for the price. No wifi or entertainment, but gate agents and crew were fantastic and we boarded quickly and left on time.

sluggish boarding and arrival procedures, fake nice flight attendants, and lots of delays.

Disaster. They lied every step of the way. We ended up being delayed due to crew and then allegedly abandoned the flight because of a curfew at LGA. No rebooking to LGA at any reasonable time. No hotel. No meal vouchers. Had to sleep in the airport and fly to Newark instead. Will never fly Frontier again.

What I expected, nickeled and dined and a frontier flight attendant loudly complained about her job and lack of communication as she headed to the gate on her cell phone. Not professional.

As every law enforcement agency I could imagine surrounded the plane and we didn’t disembark for 2 hours and then had to stick around for another hour to go get our personal belongings after leaving them behind and being bused away from the plane, it was scary and inconvenient. We were given no information as to why this was happening. Lack of communication with passengers was disappointing.

After boarding and un-boarding twice over 6+hours, the flight was canceled.

Severe turbulence. Captain never came on to reassure passengers after things settled down.

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

Information on your arrival and departure airports

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