ISP - AUS

$90 Find Cheap Flights from Islip to Austin

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Islip to Austin departing on 2/26. 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 Austin

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Islip to Austin, 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 Islip to Austin, 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
$204
Typical prices: $421-$491
Multiple Airlines
Thu 2/26Sun 3/1
ISP - AUS • 1 stop
Cheapest one-way
$90
Frontier
Thu 2/26
ISP - AUS • 1 stop
Top airlines
Southwest
Cheapest • from $407 (round-trip)
Southwest
Best reviews • 8.0 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
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We hope you love your trip to Austin!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Islip to Austin (ISP-AUS)

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

Thu, Feb 26 - Sun, Mar 1
Multiple Airlines Logo
3:34 pm - 6:44 pm
ISP
-
AUS
28h 10m
1 stop
Multiple Airlines Logo
4:59 pm - 7:38 am
AUS
-
ISP
13h 39m
1 stop
$204Multiple Airlines
Thu, Feb 26 - Sun, Mar 1
Multiple Airlines Logo
3:34 pm - 10:29 am
ISP
-
AUS
19h 55m
2 stops
Multiple Airlines Logo
4:59 pm - 7:38 am
AUS
-
ISP
13h 39m
1 stop
$236Multiple Airlines
Thu, Mar 12 - Tue, Mar 17
Southwest Logo
5:55 pm - 10:50 pm
ISP
-
AUS
5h 55m
1 stop
Southwest Logo
4:15 pm - 10:50 pm
AUS
-
ISP
5h 35m
1 stop
$407Southwest
Thu, Mar 12 - Tue, Mar 17
Southwest Logo
6:00 am - 1:40 pm
ISP
-
AUS
8h 40m
2 stops
Southwest Logo
4:15 pm - 10:50 pm
AUS
-
ISP
5h 35m
1 stop
$412Southwest
Thu, Mar 12 - Tue, Mar 17
Southwest Logo
6:00 am - 1:40 pm
ISP
-
AUS
8h 40m
2 stops
Southwest Logo
1:35 pm - 10:50 pm
AUS
-
ISP
8h 15m
2 stops
$417Southwest
Thu, Mar 12 - Mon, Mar 16
Southwest Logo
5:55 pm - 10:50 pm
ISP
-
AUS
5h 55m
1 stop
Southwest Logo
5:15 am - 11:40 am
AUS
-
ISP
5h 25m
1 stop
$447Southwest
Thu, Mar 12 - Mon, Mar 16
Southwest Logo
6:00 am - 1:40 pm
ISP
-
AUS
8h 40m
2 stops
Southwest Logo
5:15 am - 11:40 am
AUS
-
ISP
5h 25m
1 stop
$452Southwest
Mon, Feb 16 - Fri, Feb 20
Multiple Airlines Logo
3:34 pm - 4:04 pm
ISP
-
AUS
25h 30m
1 stop
Multiple Airlines Logo
3:30 pm - 11:10 am
AUS
-
ISP
18h 40m
2 stops
$453Multiple Airlines
Sun, Feb 15 - Thu, Feb 19
Multiple Airlines Logo
7:26 pm - 8:53 pm
ISP
-
AUS
50h 27m
2 stops
Multiple Airlines Logo
4:59 pm - 7:38 am
AUS
-
ISP
13h 39m
1 stop
$462Multiple Airlines
Thu, Mar 12 - Mon, Mar 16
Southwest Logo
6:00 am - 1:40 pm
ISP
-
AUS
8h 40m
2 stops
Southwest Logo
2:35 pm - 11:55 pm
AUS
-
ISP
8h 20m
2 stops
$479Southwest
Booking Insights

KAYAK's insights & trends for Islip to Austin flights

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

How much is a round-trip flight from Islip, New York to Austin?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Islip, New York to Austin departing in February.
Find deals

Good to know

Cheapest flight$90
Most popular time to fly with an average 12% increase in price.
Flight from Islip to Austin

When to book flights from Islip to Austin

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

  • What is the cheapest flight from Islip to Austin?

    In the last 3 days, the lowest price for a flight from Islip to Austin was $90 for a one-way ticket and $204 for a round-trip.

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

    No, a passport isn't needed to fly from Islip to Austin. However, local authorities might ask for an official ID.

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

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

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

    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 Islip to Austin.

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

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

    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 Austin with an airline and back to Islip with another airline. Booking your flights between Islip and AUS 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 Islip to Austin?

    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 Austin from Islip 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 Islip to Austin

 
See real verified KAYAK customer reviews for airlines flying from Islip to Austin. 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 Islip to Austin? 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 4271 reviews
7.0Food
7.5Entertainment
8.6Crew
8.1Boarding
8.0Comfort
Airline reviews

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

10.0 ExcellentPieter, Jan 2026
LGB - DAL
Read more Southwest reviews

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

Airline travel is always too cramped to really be pleasant, but the cabin crew on this flight did a pretty good job of making up for it by putting on some music during boarding and sprinkling a few funny remarks into the safety briefing and announcements, and just generally being friendly and helpful. It definitely reminded me of why I prefer the in-flight experience on Southwest!

No delays and arrived to destination 30 min early. Staff was super friendly.

Everything a cheap airline should be at normal airline rates.

Full cans of soda would be nice. A choice between two snacks would be appreciated.

Tried watching free movie and it kept freezing so I couldn’t finish.

I was re-booked onto another flight because my original flight was delayed and I would have missed my connector. I ended up in the “C” group after paying extra to be in the “A “ group on the original flight. At least if you’re going to re-book people, re-book them into the same group.

Flight was delayed due to plane not passing inspection And one of the crew had to time out and we had to wait for another one A 3 hour delay

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

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

Information on your arrival and departure airports

Islip (ISP)
Austin (AUS)