HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Islip

$372+ 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 3/29. Fares are subject to change and may not be available on all flights or dates of travel.
AUS — ISP
Mar 10 — Mar 171
Tue 3/10
Tue 3/17
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 February 8, 2026.

This Southwest deal was found by Cheapflights users on 2/5. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/65:40 pm
AUS
-
ISP
1 stop5h 15m
Southwest
Mon 3/95:15 pm
ISP
-
AUS
1 stop8h 35m
Southwest
Deal found 2/5$493
This Frontier deal was found by Cheapflights users on 2/7. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/209:29 pm
AUS
-
ISP
1 stop12h 17m
Frontier
Mon 2/238:23 am
ISP
-
AUS
1 stop11h 23m
Frontier
Deal found 2/7$624
This Kiwi.com deal was found by Cheapflights users on 2/7. 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.
Thu 2/124:59 pm
AUS
-
ISP
1 stop13h 39m
Multiple Airlines
Fri 2/132:31 pm
ISP
-
AUS
2 stops44h 20m
Multiple Airlines
Deal found 2/7$670
This Southwest deal was found by Cheapflights users on 2/7. 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.
Thu 2/1212:40 pm
AUS
-
ISP
2 stops9h 50m
Southwest
Fri 2/135:35 am
ISP
-
AUS
2 stops8h 35m
Southwest
Deal found 2/7$1,087
This JetBlue deal was found by Cheapflights users on 2/8. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/186:00 am
AUS
-
ISP
1 stop7h 11m
JetBlue
Sun 6/283:07 pm
ISP
-
AUS
1 stop8h 00m
JetBlue
Deal found 2/8$1,581

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 8, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$493
(Southwest)

One-way from

$372
(JetBlue)

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 8, 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

Fri 3/6

5:40 pm-11:55 pm

1 stop5h 15m

Islip Long Island

Mon 3/9

5:15 pm-12:50 am

1 stop8h 35m

$493

AustinIslip

AUS - ISP

AUSISP

Austin Bergstrom

Fri 2/20

9:29 pm-10:46 am

1 stop12h 17m

Islip Long Island

Mon 2/23

8:23 am-6:46 pm

1 stop11h 23m

$624

AustinIslip

AUS - ISP

AUSISP

Austin Bergstrom

Thu 6/18

6:00 am-2:11 pm

1 stop7h 11m

Islip Long Island

Sun 6/28

3:07 pm-10:07 pm

1 stop8h 00m

$1,581

AustinIslip

AUS - ISP

AUSISP

Austin Bergstrom

Sun 3/29

4:18 pm-12:02 am

1 stop6h 44m

$372

AustinIslip

AUS - ISP

AUSISP

Austin Bergstrom

Sun 2/22

10:46 am-7:26 pm

1 stop7h 40m

$559

AustinIslip

AUS - ISP

AUSISP

Austin Bergstrom

Fri 2/20

9:29 pm-10:46 am

1 stop12h 17m

$565

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/7

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 8, 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
4,280 reviews

Entertainment

7.5

Overall

8.0

Comfort

8.0

Boarding

8.1

Crew

8.6

Food

7.0

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
4,280 reviews
Southwest
8.0
Very good
4,280 reviews

Entertainment

7.5

Overall

8.0

Comfort

8.0

Boarding

8.1

Crew

8.6

Food

7.0

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.

  • 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 15m. Fly via Southwest, Frontier, or JetBlue to get the fastest option. The distance between Austin and Islip, New York is about 1556 mi. This flight may include one or multiple stops.

  • 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

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
Hobby to John F Kennedy Intl flights
Hobby to LaGuardia flights
Hobby to Newark flights
George Bush Intcntl to John F Kennedy Intl flights
Austin to John F Kennedy Intl flights
George Bush Intcntl to Newark flights
Austin to Newark flights
George Bush Intcntl to LaGuardia flights
Austin to LaGuardia flights
Love Field to LaGuardia flights
San Antonio to John F Kennedy Intl flights
San Antonio to Newark flights
San Antonio to LaGuardia flights
Dallas/Fort Worth to Buffalo flights
El Paso to John F Kennedy Intl flights
El Paso to LaGuardia flights
El Paso to Newark flights
Dallas/Fort Worth to Stewart flights
Dallas/Fort Worth to Syracuse flights
Dallas/Fort Worth to Rochester flights
Hobby to Rochester flights
Love Field to Newark flights
Hobby to Albany flights
Hobby to Buffalo flights
McAllen to Newark flights
George Bush Intcntl to Rochester flights
McAllen to John F Kennedy Intl flights
Dallas/Fort Worth to Albany flights
George Bush Intcntl to Buffalo flights
Love Field to John F Kennedy Intl flights
George Bush Intcntl to Albany flights
Dallas/Fort Worth to White Plains flights
Dallas/Fort Worth to Islip flights
McAllen to LaGuardia flights
Love Field to Buffalo flights
Hobby to White Plains flights
Hobby to Stewart flights
Austin to Buffalo flights
Austin to White Plains flights
George Bush Intcntl to White Plains flights
Austin to Syracuse flights
Hobby to Syracuse flights
Dallas/Fort Worth to Ithaca flights
Austin to Albany flights
Austin to Stewart flights
George Bush Intcntl to Syracuse 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 February 8, 2026.
AirlineCheapestAverageFlexibilityOn-time
SouthwestCheapest$317Average$496FlexibilityNo 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.