HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Islip

$86+ 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 5/3. Fares are subject to change and may not be available on all flights or dates of travel.
AUS — ISP
May 10 — May 171
Sun 5/10
Sun 5/17
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Austin to Islip with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

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 April 10, 2026.

This Frontier deal was found by Cheapflights users on 4/9. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/38:59 pm
AUS
-
ISP
1 stop11h 14m
Frontier
Tue 5/125:38 pm
ISP
-
AUS
1 stop17h 57m
Frontier
Deal found 4/9$229
This Expedia deal was found by Cheapflights users on 4/9. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/46:00 pm
AUS
-
ISP
1 stop15h 05m
Frontier
Sun 6/711:00 am
ISP
-
AUS
1 stop24h 50m
Frontier
Deal found 4/9$290
This Kiwi.com deal was found by Cheapflights users on 4/7. 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 5/56:00 am
AUS
-
ISP
2 stops27h 05m
Multiple Airlines
Tue 5/125:38 pm
ISP
-
AUS
1 stop17h 57m
Multiple Airlines
Deal found 4/7$340
This Kiwi.com deal was found by Cheapflights users on 4/9. 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.
Sun 5/38:59 pm
AUS
-
ISP
1 stop11h 14m
Multiple Airlines
Tue 5/125:27 pm
ISP
-
AUS
2 stops20h 41m
Multiple Airlines
Deal found 4/9$349
This Kiwi.com deal was found by Cheapflights users on 4/5. 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.
Sun 5/38:59 pm
AUS
-
ISP
1 stop11h 14m
Multiple Airlines
Sun 5/107:53 pm
ISP
-
AUS
2 stops45h 59m
Multiple Airlines
Deal found 4/5$353
This Kiwi.com deal was found by Cheapflights users on 4/9. 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 6/511:35 am
AUS
-
ISP
1 stop21h 30m
Frontier
Sun 6/711:00 am
ISP
-
AUS
1 stop24h 50m
Frontier
Deal found 4/9$379
This Southwest deal was found by Cheapflights users on 4/7. 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.
Tue 5/55:50 am
AUS
-
ISP
1 stop5h 05m
Southwest
Tue 5/126:30 am
ISP
-
AUS
1 stop5h 50m
Southwest
Deal found 4/7$383
This Southwest deal was found by Cheapflights users on 4/8. 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 4/295:50 am
AUS
-
ISP
1 stop7h 00m
Southwest
Sat 5/26:00 am
ISP
-
AUS
1 stop7h 00m
Southwest
Deal found 4/8$391
This Kiwi.com deal was found by Cheapflights users on 4/5. 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.
Sun 5/38:59 pm
AUS
-
ISP
1 stop11h 14m
Frontier
Sun 5/1011:12 am
ISP
-
AUS
1 stop24h 33m
Frontier
Deal found 4/5$394
This Kiwi.com deal was found by Cheapflights users on 4/9. 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.
Thu 6/46:00 pm
AUS
-
ISP
2 stops18h 28m
Multiple Airlines
Sun 6/711:00 am
ISP
-
AUS
1 stop24h 50m
Multiple Airlines
Deal found 4/9$400

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 April 10, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$229
(Frontier)

One-way from

$86
(CheapOair)

Popular in

March

Cheapest in

January

Average price

$321
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
High demand for flights, 0% potential price rise
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($5 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 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 April 10, 2026.
Use the filters below to find and compare flights from Austin to Islip that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

AustinIslip

AUS - ISP

AUSISP

Austin Bergstrom

Tue 5/5

6:00 am-10:05 am

2 stops27h 05m

Islip Long Island

Tue 5/12

5:38 pm-10:35 am

1 stop17h 57m

$340

AustinIslip

AUS - ISP

AUSISP

Austin Bergstrom

Sun 5/3

8:59 pm-9:13 am

1 stop11h 14m

Islip Long Island

Sun 5/10

7:53 pm-4:52 pm

2 stops45h 59m

$353
Quickest round-trip

AustinIslip

AUS - ISP

AUSISP

Austin Bergstrom

Tue 5/5

5:50 am-11:55 am

1 stop5h 05m

Islip Long Island

Tue 5/12

6:30 am-11:20 am

1 stop5h 50m

$383

AustinIslip

AUS - ISP

AUSISP

Austin Bergstrom

Wed 4/29

5:50 am-1:50 pm

1 stop7h 00m

Islip Long Island

Sat 5/2

6:00 am-12:00 pm

1 stop7h 00m

$391

AustinIslip

AUS - ISP

AUSISP

Austin Bergstrom

Thu 6/11

6:00 am-2:59 pm

1 stop7h 59m

Islip Long Island

Mon 6/15

3:07 pm-10:17 pm

1 stop8h 10m

$466

AustinIslip

AUS - ISP

AUSISP

Austin Bergstrom

Fri 6/5

5:25 am-11:50 am

1 stop5h 25m

Islip Long Island

Sun 6/7

6:45 am-12:10 pm

1 stop6h 25m

$467

AustinIslip

AUS - ISP

AUSISP

Austin Bergstrom

Sat 6/27

5:25 am-2:50 pm

1 stop8h 25m

Islip Long Island

Wed 8/5

6:05 am-12:50 pm

2 stops7h 45m

$472

AustinIslip

AUS - ISP

AUSISP

Austin Bergstrom

Thu 8/13

7:30 am-4:25 pm

2 stops7h 55m

Islip Long Island

Mon 8/17

12:35 pm-8:00 pm

2 stops8h 25m

$477

AustinIslip

AUS - ISP

AUSISP

Austin Bergstrom

Mon 4/27

8:25 am-4:30 pm

1 stop7h 05m

Islip Long Island

Thu 4/30

6:50 am-2:30 pm

1 stop8h 40m

$493
Cheapest one-way

AustinIslip

AUS - ISP

AUSISP

Austin Bergstrom

Sun 5/3

8:59 pm-9:13 am

1 stop11h 14m

$86

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/5

Showing 1-10 of 18 resultsSorted by cheapest first
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 April.
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 $164). 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 April 10, 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
4,334 reviews

Food

7.0

Crew

8.6

Entertainment

7.5

Overall

8.0

Boarding

8.1

Comfort

8.0

Reviews

1 / 20
6.0
Good

Scott,Feb 2026

HOU - FLL

Delayed by 45 minutes leaving Houston, making a 3.5 hour layover that much longer.
Southwest
8.0
Very good
4,334 reviews
Southwest
8.0
Very good
4,334 reviews

Food

7.0

Crew

8.6

Entertainment

7.5

Overall

8.0

Boarding

8.1

Comfort

8.0

Reviews

1 / 20
6.0
Good

Scott,Feb 2026

HOU - FLL

Delayed by 45 minutes leaving Houston, making a 3.5 hour layover that much longer.

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.

  • How long is the flight from Austin to Islip, New York?

    There are many flights that can get you from Austin to Islip, New York in 5h 05m. Fly via Southwest to get the fastest option. The distance between Austin and Islip, New York is about 1556 mi.

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

    Southwest, at $388, 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 $164). 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Austin to Islip

See prices for flight routes from nearby airports that may be better suited for you.
Dallas/Fort Worth to John F Kennedy Intl flights
Dallas/Fort Worth to LaGuardia flights
Dallas/Fort Worth to Newark flights
Austin to John F Kennedy Intl flights
Hobby to LaGuardia flights
Hobby to John F Kennedy Intl flights
George Bush Intcntl to John F Kennedy Intl flights
Austin to Newark flights
Hobby to Newark flights
Austin to LaGuardia flights
George Bush Intcntl to LaGuardia flights
George Bush Intcntl to Newark flights
Love Field to LaGuardia flights
San Antonio to Newark flights
San Antonio to John F Kennedy Intl flights
San Antonio to LaGuardia flights
Dallas/Fort Worth to Buffalo flights
Dallas/Fort Worth to Stewart flights
Hobby to Buffalo flights
Dallas/Fort Worth to Rochester flights
Dallas/Fort Worth to Albany flights
Love Field to Newark flights
El Paso to John F Kennedy Intl flights
El Paso to Newark flights
El Paso to LaGuardia flights
Hobby to Albany flights
George Bush Intcntl to Buffalo flights
Austin to Buffalo flights
Dallas/Fort Worth to Syracuse flights
Dallas/Fort Worth to White Plains flights
Hobby to Syracuse flights
Love Field to John F Kennedy Intl flights
George Bush Intcntl to Stewart flights
George Bush Intcntl to Albany flights
Dallas/Fort Worth to Islip flights
McAllen to John F Kennedy Intl flights
Austin to Rochester flights
George Bush Intcntl to Syracuse flights
Austin to Albany flights
Love Field to Buffalo flights
Austin to Syracuse flights
Hobby to Rochester flights
Midland to Newark flights
McAllen to Newark flights
McAllen to LaGuardia flights
George Bush Intcntl to Rochester flights

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 April 10, 2026.
AirlineCheapestAverageFlexibilityOn-time
SouthwestCheapest$388Average$536FlexibilityNo cancel feeOn-time63%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.
Site
Cookie settings©2026 Cheapflights