PHX - ISP

$176 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 10/9. 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

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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Flights 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, 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
$336Frontier
Find Deal
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
$351Frontier
Find Deal
Thu, Jul 10 - Sat, Jul 19
Southwest Logo
10:55 pm - 11:30 amPHX-ISP
9h 35m1 stop
Southwest Logo
11:40 am - 9:00 pmISP-PHX
12h 20m1 stop
$423Southwest
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Thu, Jul 10 - Sat, Jul 19
Southwest Logo
1:15 pm - 12:05 amPHX-ISP
7h 50m2 stops
Southwest Logo
11:40 am - 9:00 pmISP-PHX
12h 20m1 stop
$429Southwest
Find Deal
Thu, Jul 10 - Sat, Jul 19
Frontier Logo
5:27 pm - 7:42 pmPHX-ISP
23h 15m1 stop
Frontier Logo
8:37 pm - 4:16 pmISP-PHX
22h 39m1 stop
$430Frontier
Find Deal
Thu, Jul 10 - Sat, Jul 19
Southwest Logo
1:15 pm - 12:05 amPHX-ISP
7h 50m2 stops
Southwest Logo
6:00 am - 1:00 pmISP-PHX
10h 00m2 stops
$447Southwest
Find Deal
Thu, Jul 10 - Sat, Jul 19
Southwest Logo
11:15 am - 12:05 amPHX-ISP
9h 50m2 stops
Southwest Logo
11:40 am - 9:00 pmISP-PHX
12h 20m1 stop
$455Southwest
Find Deal
Thu, Jul 10 - Sat, Jul 19
Southwest Logo
11:15 am - 12:05 amPHX-ISP
9h 50m2 stops
Southwest Logo
11:00 am - 7:45 pmISP-PHX
11h 45m2 stops
$460Southwest
Find Deal
Thu, Sep 11 - Sun, Sep 14
Frontier Logo
9:12 am - 10:37 amPHX-ISP
22h 25m2 stops
Frontier Logo
11:27 am - 11:22 pmISP-PHX
14h 55m2 stops
$463Frontier
Find Deal
Thu, Jun 26 - Mon, Jun 30
 Logo
12:54 pm - 3:19 pmPHX-ISP
23h 25m3 stops
 Logo
10:44 am - 8:21 pmISP-PHX
36h 37m3 stops
Useful Info

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
High seasonJune
Cheapest flight$176
Best time to beat the crowds with an average 48% drop in price.
Most popular time to fly with an average 18% 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 $176 for a one-way ticket and $336 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 $476 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 $208 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.

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 4287 reviews
7.1Food
8.2Boarding
8.0Comfort
7.6Entertainment
8.6Crew
Airline reviews

Southwest is typically delayed, and it gets wearisome. It is no longer a discount airline and you get way less than you pay for when it comes to comfort and Ce.

6.0 GoodDavid, Jun 2025BWI - COS
Read more Southwest reviews

Southwest is typically delayed, and it gets wearisome. It is no longer a discount airline and you get way less than you pay for when it comes to comfort and Ce.

We sat on the plane on the tarmac for 4 hours.

I'm not a fan of Southwest's model. I don't like the herding style of boarding.

Flight crew and cabin crew were great. I had to rearrange flights because my original flight was 3hrs delayed for weather, the rub is the flight I moved to boarded on time then we sat at the gate for 2 hours because scheduling stole our first officer for another flight, TWICE. Then our actual FO was an hour delayed. To make it worse my original flight went from a 3 hour delay to departing 15min EARLY. Just poor scheduling operations all around.

Bring back peanuts Take our drink orders when were all seated, especially after you switch to assigned seating.

Staff was far less than helpful at all times. Departure and arrival times mean nothing to Southwest. Extremely disappointed, will never fly with them again, and I’ll be sure to share my experience with all.

It is southwest seat was ok. Not the most comfortable seat

I’ve always loved Southwest. No issues at all. I was flying standby and the gate agent was extremely friendly and helpful. Boarding was smooth and I was able to get a window seat in the emergency exit row. Crew was fantastic! They were very professional and accommodating. We had to divert from our destination due to weather but the flight crew kept everyone at ease and informed us of all pertinent information. Excellent flight

The price of the tickets isn't matching the flight experience. No matter how long the flight is, you're only getting pretzels. The flight attendants looked unkept and over it.

Plz don't take away free bags and free seating

Book with frontier airlines with the mentality that they'll cancel your flight, kick you off and lose your luggage. Anything besides that is a win. Compare prices with other airlines (to include luggage) and if frontier is still worth it, book it but know all of their policies.

You get what you pay for nothing essentially but a hard uncomfortable seat that doesn’t recline and kids screaming all around you and chaotic boarding and limited check bag weight allowance when compared to other airlines

I never got to experience the flight because they delayed my first flight and I missed this one. Then Frontier didn't want to help me rebook a flight to get me to my final destination.

The Boarding process in Denver was chaotic, and since the line was so long, we were lined up very far from the gate. If there were any announcements from the gate staff, we didn't hear them. The flight attendants were spectacular. The only negative part of the flight was sitting by a 2 1/2 year old who was unruly and unfortunately had parents that matched his behaviors. Also, the restaurants in Denver on the E concourse, they didn't have food (passengers could only order 1 item on the entire menu) or the restaurants had 12-14 people waiting for orders to be prepared and another 6 people waiting to order. If you have a layover in Denver and need to grab food, be prepared to visit the shops with pre-packaged sandwiches, or you can visit another concourse but it may take a while to transit throughout the airport.

I liked the turn-style feature at gate 209B at LAX. Very efficient process. The gate staff also made several, clearly directed announcements so I felt very informed.

Although an hour and a half early was told by staff at check in they had overbooked and could not check us in for the flight.

The crew was delayed because they came on another flight that was delayed due to weather 10pm flight left at 1.30 am The airline made no effort to align alternate crew

Plane was down graded and I lost my uncharged exit row with more leg room. No mention or offer of refund from podium. Flight attendant was nice to explain this happens often and that I could request a refund via online form submission. I did this and have heard nothing back.

Worst airline experience. They were rude and kept changing our seats and/or giving our seats away so our family didn’t get to sit with each other. Almost everyone we dealt with at both airports with this airline was rude. The app kept giving us wrong information making things take longer. Dealing with them before TSA can take close to an hour…longer than I’ve ever had to deal with before. Never using this airline again.

Horrendous. I do not recommend Frontier. The passengers lack manners and decency, and the flight attendants lack professionalism. If I wasn’t in a bind to fly with 48 hours notice for a job interview, I would not have selected a flight with Frontier and I never plan to fly with them in the future.

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

Information on your arrival and departure airports

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