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Islip

$174+ 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 6/29. Fares are subject to change and may not be available on all flights or dates of travel.
AUS — ISP
Jun 28 — Jul 51
Sun 6/28
Sun 7/5
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 29, 2026.

This Frontier deal was found by Cheapflights users on 5/27. 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 6/2410:37 am
AUS
-
ISP
1 stop9h 20m
Frontier
Thu 6/259:52 pm
ISP
-
AUS
1 stop13h 00m
Frontier
Deal found 5/27$329
This Booking.com deal was found by Cheapflights users on 5/28. 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 6/1210:37 am
AUS
-
ISP
1 stop9h 20m
Frontier
Tue 6/164:41 pm
ISP
-
AUS
1 stop18h 11m
Frontier
Deal found 5/28$383
This Frontier deal was found by Cheapflights users on 5/26. 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 5/26$390
This Southwest deal was found by Cheapflights users on 5/28. 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 7/78:55 am
AUS
-
ISP
1 stop6h 05m
Southwest
Wed 7/154:40 pm
ISP
-
AUS
1 stop7h 10m
Southwest
Deal found 5/28$395
This Southwest deal was found by Cheapflights users on 5/28. 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 7/78:55 am
AUS
-
ISP
1 stop6h 05m
Southwest
Tue 7/146:00 am
ISP
-
AUS
2 stops7h 00m
Southwest
Deal found 5/28$400
This Southwest deal was found by Cheapflights users on 5/24. 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 8/49:50 am
AUS
-
ISP
1 stop6h 05m
Southwest
Thu 8/136:10 am
ISP
-
AUS
1 stop5h 40m
Southwest
Deal found 5/24$408
This Priceline deal was found by Cheapflights users on 5/25. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/2410:37 am
AUS
-
ISP
1 stop9h 20m
Multiple Airlines
Tue 7/73:07 pm
ISP
-
AUS
1 stop8h 12m
Multiple Airlines
Deal found 5/25$417
This Frontier deal was found by Cheapflights users on 5/26. 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 6/1910:37 am
AUS
-
ISP
1 stop9h 20m
Frontier
Sun 6/219:52 pm
ISP
-
AUS
1 stop13h 00m
Frontier
Deal found 5/26$420
This Kiwi.com deal was found by Cheapflights users on 5/28. 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 7/97:45 pm
AUS
-
ISP
1 stop13h 08m
Multiple Airlines
Wed 7/1511:57 am
ISP
-
AUS
2 stops31h 58m
Multiple Airlines
Deal found 5/28$424
This Southwest deal was found by Cheapflights users on 5/25. 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 6/242:20 pm
AUS
-
ISP
1 stop7h 15m
Southwest
Tue 7/76:00 am
ISP
-
AUS
2 stops7h 00m
Southwest
Deal found 5/25$436

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 29, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$329
(Frontier)

One-way from

$174
(Priceline)

Popular in

May

Cheapest in

January

Average price

$393
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. 7% potential increase in price ($27 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($7 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 29, 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
Quickest round-trip

AustinIslip

AUS - ISP

AUSISP

Austin Bergstrom

Tue 8/4

9:50 am-4:55 pm

1 stop6h 05m

Islip Long Island

Thu 8/13

6:10 am-10:50 am

1 stop5h 40m

$408

AustinIslip

AUS - ISP

AUSISP

Austin Bergstrom

Sat 6/13

5:20 am-2:05 pm

1 stop7h 45m

Islip Long Island

Mon 6/15

5:50 pm-12:45 am

2 stops7h 55m

$496

AustinIslip

AUS - ISP

AUSISP

Austin Bergstrom

Tue 8/25

3:16 pm-10:56 pm

1 stop6h 40m

Islip Long Island

Sat 8/29

6:00 am-1:57 pm

1 stop8h 57m

$523

AustinIslip

AUS - ISP

AUSISP

Austin Bergstrom

Mon 7/20

1:00 pm-9:44 pm

1 stop7h 44m

Islip Long Island

Tue 7/28

4:58 pm-11:08 pm

1 stop7h 10m

$523

AustinIslip

AUS - ISP

AUSISP

Austin Bergstrom

Mon 6/29

3:25 pm-11:40 pm

1 stop7h 15m

Islip Long Island

Mon 7/6

5:20 am-3:35 pm

1 stop11h 15m

$523

AustinIslip

AUS - ISP

AUSISP

Austin Bergstrom

Sat 8/1

1:00 pm-9:44 pm

1 stop7h 44m

Islip Long Island

Wed 8/12

6:00 am-1:57 pm

1 stop8h 57m

$533

AustinIslip

AUS - ISP

AUSISP

Austin Bergstrom

Sun 8/23

3:16 pm-11:27 pm

1 stop7h 11m

Islip Long Island

Thu 8/27

6:00 am-1:57 pm

1 stop8h 57m

$533

AustinIslip

AUS - ISP

AUSISP

Austin Bergstrom

Sat 8/1

1:00 pm-9:44 pm

1 stop7h 44m

Islip Long Island

Thu 8/13

6:00 am-11:48 am

1 stop6h 48m

$533

AustinIslip

AUS - ISP

AUSISP

Austin Bergstrom

Sat 8/1

1:00 pm-9:44 pm

1 stop7h 44m

Islip Long Island

Wed 8/5

6:00 am-1:59 pm

1 stop8h 59m

$533
Cheapest one-way

AustinIslip

AUS - ISP

AUSISP

Austin Bergstrom

Fri 6/26

10:37 am-8:57 pm

1 stop9h 20m

$175

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/25

Showing 1-10 of 19 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 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 29, 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
4,264 reviews

Crew

8.6

Boarding

8.1

Entertainment

7.5

Food

7.0

Comfort

8.0

Overall

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
4,264 reviews
Southwest
8.0
Very good
4,264 reviews

Crew

8.6

Boarding

8.1

Entertainment

7.5

Food

7.0

Comfort

8.0

Overall

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 6h 05m. Fly via Southwest 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 $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 29, 2026.
AirlineCheapestAverageFlexibilityOn-time
SouthwestCheapest$388Average$517FlexibilityNo cancel feeOn-time63%

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