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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 8/14. Fares are subject to change and may not be available on all flights or dates of travel.
AUS — ISP
Jun 11 — Jun 181
Thu 6/11
Thu 6/18
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 May 12, 2026.

This Booking.com deal was found by Cheapflights users on 5/11. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/2411:15 am
AUS
-
ISP
1 stop21h 18m
Frontier
Sun 9/274:13 pm
ISP
-
AUS
1 stop18h 59m
Frontier
Deal found 5/11$262
This Frontier deal was found by Cheapflights users on 5/11. 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.
Wed 6/1010:37 am
AUS
-
ISP
1 stop9h 20m
Frontier
Sun 6/149:52 pm
ISP
-
AUS
1 stop13h 00m
Frontier
Deal found 5/11$290
This Kiwi.com deal was found by Cheapflights users on 5/10. 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 5/2910:59 am
AUS
-
ISP
2 stops22h 06m
Multiple Airlines
Tue 6/26:02 pm
ISP
-
AUS
1 stop17h 33m
Multiple Airlines
Deal found 5/10$355
This Kiwi.com deal was found by Cheapflights users on 5/7. 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 6/93:27 pm
AUS
-
ISP
2 stops28h 30m
Frontier
Sun 6/149:52 pm
ISP
-
AUS
1 stop13h 00m
Frontier
Deal found 5/7$356
This Lucky2Go deal was found by Cheapflights users on 5/7. 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 Lucky2Go is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/612:44 pm
AUS
-
ISP
2 stops20h 21m
Frontier
Fri 6/127:50 pm
ISP
-
AUS
2 stops45h 53m
Frontier
Deal found 5/7$361
This Kiwi.com deal was found by Cheapflights users on 5/7. 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 7/307:45 pm
AUS
-
ISP
1 stop13h 13m
Multiple Airlines
Thu 8/67:49 pm
ISP
-
AUS
2 stops40h 50m
Multiple Airlines
Deal found 5/7$372
This Booking.com deal was found by Cheapflights users on 5/10. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/2911:35 am
AUS
-
ISP
1 stop21h 30m
Frontier
Tue 6/26:02 pm
ISP
-
AUS
1 stop17h 33m
Frontier
Deal found 5/10$397
This Trip.com deal was found by Cheapflights users on 5/10. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/811:45 am
AUS
-
ISP
1 stop27h 11m
Frontier
Mon 6/159:52 pm
ISP
-
AUS
2 stops27h 07m
Frontier
Deal found 5/10$400
This Gotogate deal was found by Cheapflights users on 5/9. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/310:47 am
AUS
-
ISP
1 stop22h 16m
Frontier
Tue 7/74:41 pm
ISP
-
AUS
1 stop17h 56m
Frontier
Deal found 5/9$404
This Southwest deal was found by Cheapflights users on 5/11. 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 10/1512:40 pm
AUS
-
ISP
2 stops9h 55m
Southwest
Tue 10/202:35 pm
ISP
-
AUS
1 stop5h 30m
Southwest
Deal found 5/11$413
This Kiwi.com deal was found by Cheapflights users on 5/10. 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 6/275:42 pm
AUS
-
ISP
1 stop26h 15m
Multiple Airlines
Tue 6/305:27 pm
ISP
-
AUS
2 stops17h 25m
Multiple Airlines
Deal found 5/10$415

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 May 12, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$262
(Booking.com)

One-way from

$135
(Mytrip)

Popular in

May

Cheapest in

January

Average price

$379
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. 6% potential increase in price ($22 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($6 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in May 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 May 12, 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

Thu 10/15

11:15 am-9:33 am

1 stop21h 18m

Islip Long Island

Tue 10/20

4:13 pm-10:12 am

1 stop18h 59m

$262

AustinIslip

AUS - ISP

AUSISP

Austin Bergstrom

Tue 6/9

3:27 pm-8:57 pm

2 stops28h 30m

Islip Long Island

Sun 6/14

9:52 pm-9:52 am

1 stop13h 00m

$356

AustinIslip

AUS - ISP

AUSISP

Austin Bergstrom

Thu 7/30

7:45 pm-9:58 am

1 stop13h 13m

Islip Long Island

Thu 8/6

10:48 am-9:37 am

1 stop23h 49m

$386

AustinIslip

AUS - ISP

AUSISP

Austin Bergstrom

Thu 10/15

12:40 pm-11:35 pm

2 stops9h 55m

Islip Long Island

Tue 10/20

2:35 pm-7:05 pm

1 stop5h 30m

$413

AustinIslip

AUS - ISP

AUSISP

Austin Bergstrom

Tue 6/9

2:15 pm-10:35 pm

1 stop7h 20m

Islip Long Island

Sun 6/14

6:00 am-10:35 am

1 stop5h 35m

$431
Quickest round-trip

AustinIslip

AUS - ISP

AUSISP

Austin Bergstrom

Wed 7/15

5:40 am-11:50 am

1 stop5h 10m

Islip Long Island

Wed 7/15

4:40 pm-10:45 pm

1 stop7h 05m

$431

AustinIslip

AUS - ISP

AUSISP

Austin Bergstrom

Mon 6/8

5:25 am-11:50 am

1 stop5h 25m

Islip Long Island

Mon 6/15

6:05 pm-11:55 pm

1 stop6h 50m

$444

AustinIslip

AUS - ISP

AUSISP

Austin Bergstrom

Fri 7/3

3:05 pm-11:35 pm

2 stops7h 30m

Islip Long Island

Tue 7/7

6:00 am-12:00 pm

2 stops7h 00m

$463

AustinIslip

AUS - ISP

AUSISP

Austin Bergstrom

Thu 7/16

3:25 pm-11:40 pm

1 stop7h 15m

Islip Long Island

Mon 7/20

6:05 pm-11:55 pm

1 stop6h 50m

$467

AustinIslip

AUS - ISP

AUSISP

Austin Bergstrom

Thu 7/30

3:05 pm-11:35 pm

2 stops7h 30m

Islip Long Island

Thu 8/6

12:35 pm-8:05 pm

2 stops8h 30m

$477

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/7

Showing 1-10 of 21 resultsSorted by cheapest first
1
2
3

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 May.
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.

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 May 12, 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
4,295 reviews

Overall

8.0

Crew

8.6

Comfort

8.0

Boarding

8.1

Food

7.0

Entertainment

7.5

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
4,295 reviews
Southwest
8.0
Very good
4,295 reviews

Overall

8.0

Crew

8.6

Comfort

8.0

Boarding

8.1

Food

7.0

Entertainment

7.5

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 9h 55m. Fly via Frontier or Southwest 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 $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.

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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Alternative routes for Austin to Islip

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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 May 12, 2026.
AirlineCheapestAverageFlexibilityOn-time
SouthwestCheapest$388Average$526FlexibilityNo cancel feeOn-time63%

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