PHX - ISP

$138 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 10/24. 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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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

Fri, Oct 24 - Mon, Oct 27
Frontier Logo
11:51 pm - 10:37 amPHX-ISP
7h 46m1 stop
Frontier Logo
5:05 pm - 10:46 pmISP-PHX
8h 41m1 stop
$285Frontier
Find Deal
Thu, Oct 9 - Mon, Oct 13
Frontier Logo
11:51 pm - 10:37 amPHX-ISP
7h 46m1 stop
Frontier Logo
5:05 pm - 10:46 pmISP-PHX
8h 41m1 stop
$294Frontier
Find Deal
Mon, Aug 11 - Fri, Aug 15
Frontier Logo
5:27 pm - 9:58 pmPHX-ISP
25h 31m1 stop
Frontier Logo
8:37 pm - 4:16 pmISP-PHX
22h 39m1 stop
$299Frontier
Find Deal
Fri, Oct 17 - Tue, Oct 21
Southwest Logo
11:10 pm - 11:10 amPHX-ISP
9h 00m1 stop
Southwest Logo
4:55 pm - 10:05 pmISP-PHX
8h 10m1 stop
$380Southwest
Find Deal
Fri, Oct 24 - Mon, Oct 27
Southwest Logo
11:35 pm - 12:10 pmPHX-ISP
9h 35m2 stops
Southwest Logo
3:20 pm - 8:55 pmISP-PHX
8h 35m1 stop
$381Southwest
Find Deal
Tue, Aug 12 - Sat, Aug 16
 Logo
11:49 pm - 7:52 pmPHX-ISP
17h 03m2 stops
 Logo
8:37 pm - 9:37 pmISP-PHX
28h 00m2 stops
Thu, Dec 4 - Sun, Dec 7
JetBlue Logo
11:40 pm - 11:18 amPHX-ISP
9h 38m1 stop
JetBlue Logo
12:15 pm - 10:40 pmISP-PHX
12h 25m1 stop
$610JetBlue
Find Deal
Fri, Oct 24 - Mon, Oct 27
 Logo
7:46 pm - 1:24 pmPHX-ISP
14h 38m2 stops
 Logo
4:33 pm - 9:41 pmISP-PHX
32h 08m3 stops
Sat, Oct 18 - Sat, Oct 25
Breeze Airways Logo
12:08 pm - 1:39 pmPHX-ISP
22h 31m2 stops
Breeze Airways Logo
8:45 pm - 12:04 pmISP-PHX
42h 19m3 stops
$970Breeze Airways
Find Deal
Sat, Oct 18 - Sat, Oct 25
Breeze Airways Logo
12:08 pm - 1:39 pmPHX-ISP
22h 31m2 stops
Breeze Airways Logo
8:45 pm - 12:04 pmISP-PHX
42h 19m2 stops
$993Breeze Airways
Find Deal
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$138
Best time to beat the crowds with an average 49% drop in price.
Most popular time to fly with an average 4% 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 $138 for a one-way ticket and $285 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 $473 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 5.9.

  • 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 4241 reviews
8.6Crew
7.5Entertainment
7.0Food
8.1Boarding
8.0Comfort
Airline reviews

southwest just starting charging for luggage. hadnt realized it until it was too late. now out $70 when i couldve bought a carry on if i wouldve known. free bags was one of the only reasons i chose southwest over another airline (the other being no assigned seats, which is apparently also being changed). stupid business decision. wont be flying southwest anymore.

2.0 MediocreAnonymous, Jul 2025AUS - RDU
Read more Southwest reviews

southwest just starting charging for luggage. hadnt realized it until it was too late. now out $70 when i couldve bought a carry on if i wouldve known. free bags was one of the only reasons i chose southwest over another airline (the other being no assigned seats, which is apparently also being changed). stupid business decision. wont be flying southwest anymore.

The quality of Southwest Airlines continues to degrade each time I fly with them. If it were not for the free luggage, I would probably choose another airline. Their prices are a little bit competitive, but way too high for the quality of the service. Southwest is not unique in this way. Domestic flight in the United States of America has continued to be a lower and lower quality product. Very sad when you compare the quality of domestic airlines to that of many international airlines around the world.

Very smooth checking in our luggage with a super pleasant SW agent. I enjoyed a fun entertaining movie.

WiFi did not work. For as outrageous as these flights cost, when they’re advertised with certain services/ features they should be in working order

Worst experience I had on Southwest. Still better than most, but the seating was barely tolerable.

The Southwest employees (all two of them) were very nice and cheerful despite the fact the line to self-check a bag (simply drop it off) was hundreds of people long. Thank God I arrived early to the airport because I stood in this line for at least an hour. Once on the flight that had been delayed by an hour, we had no Wi-Fi and thus no entertainment. Finally, I hope the investor strong arm tactics against Southwest pay off in a short-term windfall to your C-Suite because the rest of you are screwed. I have been a faithful Southwest customer for 15 years due to everything you just got rid of. I'm flying to Idaho and Washington in October, both places I used to simply book with Southwest without a second thought now with Frontier (Washington) and United (Idaho) because they offer everything the "new" Southwest does but cheaper and at better times, destinations, etc. This really makes me sad...

It was okay. The plane was delayed from earlier in the day, but they kept updating the departure time, sometimes later, sometimes earlier. That was stressful. Once we finally got on and took off, it was fine. I was supposed to have a connection in Chicago to Los Angeles, and the time for so late I was rebooked to arrive in LA 3 hours late. The departure time to Chicago later became early enough to have taken my original connection and arrive earlier but that wasn't an option.

It was one and half hour late... Not sure if any other experience matters.

Delayed flight. Nicest crew member was a SW pilot flying seated next to me who kindly move to seat the final passenger. Flight extra delayed. My cup of refreshment of ginger ale was so packed with ice it was literally 2 sips.

For my birthday trip this was my second time ever flying, this trip was the best.

Boarding in Orlando was not good. Giant mob at the gate, should have been lines.

Decent clean onboard experience. Okay discount airline experience. Unfortunately, any customer service interactions are difficult and unhelpful. There is no service. Also, a premium seat only gets you premium boarding if you line up first. Once they start general boarding you must go to the back of the line. Not very premium

baggage clamed had to wait over a hour and half for all people on my flight it was terrible

The ticketing agents were rude but then we had a great gate agent very nice we had to ride a buss out to where the plane was parked but it was in some back corner of the airport when we got to the plane the captain who was great btw was cleaning the plane because the same rude ticketing agent told them they we not contracted to vacuum the plane. The ride to las Vegas was fine We had a connecting flight to Dallas. The flight was fine but when we arrived in Dallas everyone who flew on any frontier airlines the picked up bags from baggage claim D15 had to wait over a hour for their bags to start we arrived at 11:30pm ish to the gate we didn't leave the baggage clamed till 12:50 am very not happy and i used to fly frontier 4 times a week for work in Denver i will not be using them again

I was 2 hr arrive in the airport and 45 min in the line . After take to my turn . The agent tell me I’m later . I can not board . So my vacation was going to the floor . Just for their bad customer service agent in the airline

Frontier Airlines was AWFUL. I was an hour early for my flight and the lady refused to check me in. I had to purchase a whole new ticket with a different airline.

My flight was canceled I was promised a reginf still not received.

Late, terrible communication, horrible planning of passenger seating until the literal last minute. One of the worst flying experiences of my life. Y'all suck

Both legs of the flight were changed. The day of the flight and length of the trip.

First of all, we never got on the connecting flight to Denver. They delayed our flight for two hours. If we would have gotten on that flight, we would have been stuck in Denver for 13 hours. So we re- routed our flight for a straight through flight to Oklahoma two days later. THEN, they delayed that flight for two hours. After that we were able to finally get on our flight and come home. Frontier Airlines - one of the worst airlines I have ever been on.

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