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Islip

$297+ Cheap flights from Austin to Islip, NY (AUS - ISP)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 12/31. Fares are subject to change and may not be available on all flights or dates of travel.
AUS — ISP
Jan 14 — Jan 211
Wed 1/14
Wed 1/21
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 December 15, 2025.

This Kiwi.com deal was found by Cheapflights users on 12/12. 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 12/315:30 amAUS - ISP
2 stops27h 28mMultiple Airlines
Thu 1/88:40 pmISP - AUS
1 stop21h 07mMultiple Airlines
Deal found 12/12$297
This Kiwi.com deal was found by Cheapflights users on 12/12. 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 12/315:30 amAUS - ISP
2 stops27h 28mMultiple Airlines
Mon 1/58:24 pmISP - AUS
1 stop26h 33mMultiple Airlines
Deal found 12/12$386
This Kiwi.com deal was found by Cheapflights users on 12/12. 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 12/315:30 amAUS - ISP
2 stops27h 28mMultiple Airlines
Tue 1/612:55 pmISP - AUS
1 stop10h 02mMultiple Airlines
Deal found 12/12$426
This Kiwi.com deal was found by Cheapflights users on 12/12. 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 12/316:00 amAUS - ISP
1 stop28h 25mMultiple Airlines
Wed 1/711:50 amISP - AUS
2 stops14h 08mMultiple Airlines
Deal found 12/12$438
This Kiwi.com deal was found by Cheapflights users on 12/12. 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 12/315:30 amAUS - ISP
2 stops27h 28mMultiple Airlines
Sun 1/48:24 pmISP - AUS
1 stop26h 33mMultiple Airlines
Deal found 12/12$471
This Southwest deal was found by Cheapflights users on 12/12. 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.
Wed 12/313:35 pmAUS - ISP
1 stop5h 30mSouthwest
Tue 1/66:00 amISP - AUS
1 stop6h 30mSouthwest
Deal found 12/12$480
This Kiwi.com deal was found by Cheapflights users on 12/12. 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 12/246:00 amAUS - ISP
1 stop9h 37mMultiple Airlines
Tue 12/302:19 pmISP - AUS
2 stops32h 38mMultiple Airlines
Deal found 12/12$591
This Kiwi.com deal was found by Cheapflights users on 12/12. 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 12/246:00 amAUS - ISP
1 stop28h 25mMultiple Airlines
Mon 12/298:35 pmISP - AUS
1 stop12h 33mMultiple Airlines
Deal found 12/12$595

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 December 15, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$297
(Kiwi.com)

Popular in

March

Cheapest in

January

Average price

$354
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
Highest demand for flights based on searches. 9% potential increase in price ($35 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($9 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
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 December 15, 2025.
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

Wed 12/31

5:30 am-9:58 am

2 stops27h 28m

Islip Long Island

Mon 1/5

8:24 pm-9:57 pm

1 stop26h 33m

$386

AustinIslip

AUS - ISP

AUSISP

Austin Bergstrom

Wed 12/31

6:00 am-11:25 am

1 stop28h 25m

Islip Long Island

Thu 1/8

8:40 pm-4:47 pm

1 stop21h 07m

$402

AustinIslip

AUS - ISP

AUSISP

Austin Bergstrom

Wed 12/31

5:30 am-9:58 am

2 stops27h 28m

Islip Long Island

Tue 1/6

12:55 pm-9:57 pm

1 stop10h 02m

$426

AustinIslip

AUS - ISP

AUSISP

Austin Bergstrom

Wed 12/31

6:00 am-11:25 am

1 stop28h 25m

Islip Long Island

Wed 1/7

11:50 am-12:58 am

2 stops14h 08m

$438

AustinIslip

AUS - ISP

AUSISP

Austin Bergstrom

Wed 12/31

5:30 am-9:58 am

2 stops27h 28m

Islip Long Island

Sun 1/4

8:24 pm-9:57 pm

1 stop26h 33m

$471

AustinIslip

AUS - ISP

AUSISP

Austin Bergstrom

Wed 12/31

3:35 pm-10:05 pm

1 stop5h 30m

Islip Long Island

Tue 1/6

6:00 am-11:30 am

1 stop6h 30m

$480

AustinIslip

AUS - ISP

AUSISP

Austin Bergstrom

Thu 3/12

3:38 pm-11:55 pm

1 stop7h 17m

Islip Long Island

Sun 3/15

8:32 am-2:43 pm

1 stop7h 11m

$518

AustinIslip

AUS - ISP

AUSISP

Austin Bergstrom

Sat 12/27

2:50 pm-8:50 pm

1 stop5h 00m

Islip Long Island

Fri 1/2

5:50 pm-12:15 am

1 stop7h 25m

$767

AustinIslip

AUS - ISP

AUSISP

Austin Bergstrom

Sat 12/20

7:22 pm-1:09 pm

2 stops16h 47m

$346

AustinIslip

AUS - ISP

AUSISP

Austin Bergstrom

Sat 12/20

6:10 pm-11:00 am

3 stops15h 50m

$409

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/13

Showing 1-10 of 13 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 December.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice 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 eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Austin-Islip, New York flight deals on Cheapflights vs. eDreams >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 eDreams the most. eDreams 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 $167). 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 December 15, 2025.
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
7.9
Good
4,250 reviews

Overall

7.9

Entertainment

7.5

Boarding

8.1

Food

7.0

Comfort

8.0

Crew

8.6

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
7.9
Good
4,250 reviews
Southwest
7.9
Good
4,250 reviews

Overall

7.9

Entertainment

7.5

Boarding

8.1

Food

7.0

Comfort

8.0

Crew

8.6

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 $167). 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 December 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
SouthwestCheapest$317Average$496FlexibilityNo cancel feeOn-time63%

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