AUS - ISP

$86 Find Cheap Flights from Austin 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 Austin to Islip departing on 5/3. 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 Austin 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 Austin to Islip, as well as popular online travel agencies
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41,299,237 searches in the past 7 days on KAYAK

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Everything you should know

Cheapest round-trip
$229
Frontier
Sun 5/3Tue 5/12
AUS - ISP • 1 stop
Cheapest one-way
$86
Frontier
Sun 5/3
AUS - ISP • 1 stop
Top airlines
Frontier
Cheapest • from $229 (round-trip)
Southwest
Best reviews • 8.0 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
Not available
There are currently no direct flights between Austin and Islip. You'll need at least 1 connection.
Insights
Insights
Insights
Insights
Top layover airports
Orlando (MCO)
Cheapest • Avg $332 (round-trip)
Baltimore (BWI)
Shortest trip • 5h 42m (one-way)
Insights
Insights
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Insights
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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!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Austin to Islip (AUS-ISP)

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

Sun, May 3 - Tue, May 12
Frontier Logo
8:59 pm - 9:13 am
AUS
-
ISP
11h 14m
1 stop
Frontier Logo
5:38 pm - 10:35 am
ISP
-
AUS
17h 57m
1 stop
$229Frontier
Thu, Jun 4 - Sun, Jun 7
Frontier Logo
6:00 pm - 10:05 am
AUS
-
ISP
15h 05m
1 stop
Frontier Logo
11:00 am - 10:50 am
ISP
-
AUS
24h 50m
1 stop
$290Frontier
Thu, Apr 23 - Tue, May 5
Multiple Airlines Logo
6:00 am - 7:36 pm
AUS
-
ISP
12h 36m
2 stops
Multiple Airlines Logo
5:38 pm - 10:35 am
ISP
-
AUS
17h 57m
1 stop
$325Multiple Airlines
Tue, May 5 - Tue, May 12
Multiple Airlines Logo
6:00 am - 10:05 am
AUS
-
ISP
27h 05m
2 stops
Multiple Airlines Logo
5:38 pm - 10:35 am
ISP
-
AUS
17h 57m
1 stop
$340Multiple Airlines
Wed, Apr 22 - Tue, May 5
Frontier Logo
6:13 pm - 9:13 am
AUS
-
ISP
38h 00m
2 stops
Frontier Logo
5:38 pm - 10:35 am
ISP
-
AUS
17h 57m
1 stop
$349Frontier
Fri, Jun 5 - Sun, Jun 7
Frontier Logo
11:35 am - 10:05 am
AUS
-
ISP
21h 30m
1 stop
Frontier Logo
11:00 am - 10:50 am
ISP
-
AUS
24h 50m
1 stop
$379Frontier
Thu, Apr 23 - Tue, May 5
Frontier Logo
7:12 pm - 9:13 am
AUS
-
ISP
13h 01m
1 stop
Frontier Logo
5:38 pm - 10:35 am
ISP
-
AUS
17h 57m
1 stop
$380Frontier
Tue, May 5 - Tue, May 12
Southwest Logo
5:50 am - 11:55 am
AUS
-
ISP
5h 05m
1 stop
Southwest Logo
6:30 am - 11:20 am
ISP
-
AUS
5h 50m
1 stop
$383Southwest
Tue, May 5 - Tue, May 5
Southwest Logo
5:50 am - 11:55 am
AUS
-
ISP
5h 05m
1 stop
Southwest Logo
4:10 pm - 11:35 pm
ISP
-
AUS
8h 25m
2 stops
$388Southwest
Wed, Apr 29 - Sat, May 2
Southwest Logo
5:50 am - 1:50 pm
AUS
-
ISP
7h 00m
1 stop
Southwest Logo
6:00 am - 12:00 pm
ISP
-
AUS
7h 00m
1 stop
$391Southwest
Booking Insights

KAYAK's insights & trends for Austin to Islip flights

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

Which airlines provide the cheapest flights from Austin 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 Austin to Islip were found on Frontier ($229) and Southwest ($383).

Find deals

Good to know

Cheapest flight$86
Flight from Austin to Islip

When to book flights from Austin to Islip

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

  • What is the cheapest flight from Austin to Islip?

    In the last 3 days, the lowest price for a flight from Austin to Islip was $86 for a one-way ticket and $229 for a round-trip.

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

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

  • Which airports will I be using when flying from Austin to Islip?

    Austin and Islip are both served by 1 main airport. You will leave Austin from Austin Bergstrom and will be arriving at Islip Long Island.

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

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

  • How does KAYAK find such low prices on flights from Austin 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 Austin to Islip.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Islip from Austin 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 Austin 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 Austin with another airline. Booking your flights between Austin 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 Austin 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 Austin 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 Austin to Islip

 
See real verified KAYAK customer reviews for airlines flying from Austin 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 Austin 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 4334 reviews
8.1Boarding
7.0Food
7.5Entertainment
8.0Comfort
8.6Crew
Airline reviews

The new seat assignment thing is wierd. If you don’t pay for a seat they always assign you a middle seat regardless of how many people are on the flight. Idk… the new company that bought Southwest is trying to make it more profitable, but I’m just not seeing it. The flight attendants aren’t having as much fun anymore. It just feels like the airline is slowly dying. IMO. We shall see if Southwest is the next Toy’s R Us.

6.0 GoodKenley, Apr 2026
AUS - LAS
Read more Southwest reviews

The new seat assignment thing is wierd. If you don’t pay for a seat they always assign you a middle seat regardless of how many people are on the flight. Idk… the new company that bought Southwest is trying to make it more profitable, but I’m just not seeing it. The flight attendants aren’t having as much fun anymore. It just feels like the airline is slowly dying. IMO. We shall see if Southwest is the next Toy’s R Us.

The Air hostess were very rude on my flight from Houston to Austin . Their regular communication itself felt a they are shouting at people.

Plane was late. Zero service for 2+ hour flight and it was not that bumpy.

Had a great flight. Delayed takeoff, but comfortable. Snacks were good.

I have roller bag with food and medication told me I couldn't bring on my 2nd flight today. 15 years flying with SW never an issue with that bag.

Great flight. Good snacks and drinks. Grateful it was free. The flight from Nashville to louisville, i think her name was Tracy (not sure that's right) super awesome, nice and cheerful. She really enjoyed being at work today! She was the person who scanned the boarding pass on flight wn941. She should be recommended for a raise !

I elected to pay for the upgrades and found very little difference

Flight was hours late, unable to sit next to spouse, I have had so much better experiences. Substantially better, only saving grace was that it was a short flight.

I was assigned seat 7E, yet my boarding was Group 5, which caused me to have to put my luggage in the back of the plance above `19 or 20 aisle, as passengers who had boarded earlier took the overhead bins in the front. SW needs to monitor bin space and ensure that bin space above the seat are aligned to those sitting near their seats. Also the seating assignments needs to align with group number. Maybe board those last first and so on? Having said the ALL the passengers on the plane were gracious enough to allow me and other passengers in this dilema to retrieve our luggage and helped us along the way. I always love the flight staff, as always their fantastic and I can't rave about them enough!

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

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

Information on your arrival and departure airports

Austin (AUS)
Islip (ISP)