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Islip

$135+ Cheap flights from Austin to Islip, NY (AUS - ISP)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/5. Fares are subject to change and may not be available on all flights or dates of travel.
AUS — ISP
Mar 6 — Mar 131
Fri 3/6
Fri 3/13
1 adult, Economy
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Cheap flight deals from Austin to Islip

Cheapest flights from Austin to Islip
Explore the most affordable flight options available from Austin to Islip. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 4, 2026.

This Kiwi.com deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/177:15 am
AUS
-
ISP
2 stops28h 58m
Multiple Airlines
Sat 2/2111:41 am
ISP
-
AUS
1 stop23h 10m
Multiple Airlines
Deal found 2/2$270
This Kiwi.com deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/187:15 am
AUS
-
ISP
2 stops31h 57m
Multiple Airlines
Sun 2/228:21 pm
ISP
-
AUS
1 stop23h 25m
Multiple Airlines
Deal found 2/3$295
This Kiwi.com deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/144:59 pm
AUS
-
ISP
1 stop13h 49m
Multiple Airlines
Mon 2/167:49 pm
ISP
-
AUS
2 stops26h 04m
Multiple Airlines
Deal found 2/1$297
This Kiwi.com deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/139:29 pm
AUS
-
ISP
1 stop20h 59m
Multiple Airlines
Mon 2/167:49 pm
ISP
-
AUS
2 stops26h 04m
Multiple Airlines
Deal found 2/2$361
This Southwest deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/145:00 am
AUS
-
ISP
1 stop6h 35m
Southwest
Sun 8/166:20 am
ISP
-
AUS
1 stop7h 20m
Southwest
Deal found 2/2$447
This Kiwi.com deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/139:29 pm
AUS
-
ISP
1 stop12h 17m
Frontier
Mon 2/168:23 am
ISP
-
AUS
1 stop11h 23m
Frontier
Deal found 2/2$456
This Southwest deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/145:15 pm
AUS
-
ISP
1 stop5h 20m
Southwest
Tue 3/174:40 pm
ISP
-
AUS
1 stop6h 20m
Southwest
Deal found 2/3$457

Find flight deals from Austin to Islip

Discover tips and strategies to find the most affordable flight options for your journey from Austin (AUS) to Islip (ISP). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated February 4, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$270
(Kiwi.com)

One-way from

$135
(Kiwi.com)

Popular in

March

Cheapest in

January

Average price

$288
Provider with most accurate pricing for Austin Bergstrom-Islip Long Island flight deals.
Search Deals
Provider most trusted by Cheapflights users for Austin Bergstrom-Islip Long Island flights.
Search Deals
From Austin Bergstrom to Islip Long Island
Search Deals
One-way flight from Austin Bergstrom to Islip Long Island
Search Deals
Highest demand for flights based on searches. 5% potential increase in price ($21 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($7 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Austin to Islip that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated February 4, 2026.
Use the filters below to find and compare flights from Austin to Islip that are best for you.

Fly from

Austin

Fly to

Islip

Route

Depart

Return

Price

AustinIslip

AUS - ISP

AUSISP

Austin Bergstrom

Tue 2/17

4:59 pm-1:13 pm

1 stop19h 14m

Islip Long Island

Sat 2/21

8:23 pm-9:51 am

1 stop14h 28m

$288

AustinIslip

AUS - ISP

AUSISP

Austin Bergstrom

Wed 2/18

7:15 am-4:12 pm

2 stops31h 57m

Islip Long Island

Sun 2/22

8:21 pm-6:46 pm

1 stop23h 25m

$295

AustinIslip

AUS - ISP

AUSISP

Austin Bergstrom

Sat 2/14

4:59 pm-7:48 am

1 stop13h 49m

Islip Long Island

Mon 2/16

7:49 pm-8:53 pm

2 stops26h 04m

$297

AustinIslip

AUS - ISP

AUSISP

Austin Bergstrom

Sat 3/14

5:15 pm-11:35 pm

1 stop5h 20m

Islip Long Island

Tue 3/17

4:40 pm-10:00 pm

1 stop6h 20m

$457

AustinIslip

AUS - ISP

AUSISP

Austin Bergstrom

Tue 5/5

7:20 am-9:13 am

2 stops48h 53m

$135

AustinIslip

AUS - ISP

AUSISP

Austin Bergstrom

Fri 2/13

9:29 pm-10:46 am

1 stop12h 17m

$146

AustinIslip

AUS - ISP

AUSISP

Austin Bergstrom

Tue 3/17

4:14 pm-8:55 am

2 stops15h 41m

$182

AustinIslip

AUS - ISP

AUSISP

Austin Bergstrom

Tue 3/17

4:15 pm-10:50 pm

1 stop5h 35m

$224

AustinIslip

AUS - ISP

AUSISP

Austin Bergstrom

Fri 3/13

5:40 pm-11:55 pm

1 stop5h 15m

$234

AustinIslip

AUS - ISP

AUSISP

Austin Bergstrom

Fri 2/13

9:29 pm-8:39 am

1 stop10h 10m

$246

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/3

Showing 1-10 of 11 results
1
2

Compare providers for flights from Austin to Islip

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Austin to Islip in February.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Austin-Islip, New York flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Austin-Islip, New York flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Austin-Islip, New York flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Austin-Islip, New York flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Austin-Islip, New York flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Austin to Islip

Have a flexible travel schedule? Discover the best time to fly to Islip from Austin with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

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

What is the cheapest month to book a flight from Austin to Islip, New York?

Currently, January is the cheapest month in which you can book a flight from Austin to Islip, New York (average of $80). Flying from Austin to Islip, New York in July is currently the most expensive (average of $165). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Reviews of airlines servicing Islip

Get insights into the airlines that provide service to Islip. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Islip. Reviews last updated February 4, 2026.
Get a feel of what it's like to fly with Southwest from Austin to Islip by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,272 reviews

Food

7.0

Overall

8.0

Entertainment

7.5

Crew

8.6

Boarding

8.1

Comfort

8.0

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
Southwest
8.0
Very good
4,272 reviews
Southwest
8.0
Very good
4,272 reviews

Food

7.0

Overall

8.0

Entertainment

7.5

Crew

8.6

Boarding

8.1

Comfort

8.0

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

Related info for your journey

Find useful and relevant information for your journey from Austin to Islip. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What is the cheapest airline to fly from Austin to Islip, New York round-trip?

    Southwest, at $317, was found to be the cheapest airline from Austin to Islip, New York..

  • Can I find deals for flights from Austin to Islip that include hotel bookings?

    Yes. In addition to deals on Austin to Islip flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Austin to Islip?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Austin to Islip.

  • Can I find deals for business class flights from Austin to Islip?

    Yes. Cheapflights offers flight deals from Austin to Islip by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Austin to Islip, New York?

    Currently, January is the cheapest month in which you can book a flight from Austin to Islip, New York (average of $80). Flying from Austin to Islip, New York in July is currently the most expensive (average of $165). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Islip?

Book flights to Islip if you plan to visit one of these locations
Riverhead

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Top airline flying from Austin to Islip

Discover the top airline that operate flights from Austin to Islip. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated February 4, 2026.
AirlineCheapestAverageFlexibilityOn-time
SouthwestCheapest$317Average$496FlexibilityNo cancel feeOn-time63%

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