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Islip

$101+ 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 4/19. Fares are subject to change and may not be available on all flights or dates of travel.
AUS — ISP
Apr 10 — Apr 171
Fri 4/10
Fri 4/17
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 March 11, 2026.

This Expedia deal was found by Cheapflights users on 3/9. 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 4/307:12 pm
AUS
-
ISP
1 stop13h 01m
Frontier
Sun 5/34:07 pm
ISP
-
AUS
1 stop27h 10m
Frontier
Deal found 3/9$240
This Kiwi.com deal was found by Cheapflights users on 3/9. 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 4/38:12 pm
AUS
-
ISP
1 stop13h 18m
Multiple Airlines
Tue 4/76:00 am
ISP
-
AUS
2 stops34h 12m
Multiple Airlines
Deal found 3/9$291
This Trip.com deal was found by Cheapflights users on 3/9. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/24:59 pm
AUS
-
ISP
2 stops16h 57m
Multiple Airlines
Sun 4/1212:08 pm
ISP
-
AUS
1 stop8h 09m
Multiple Airlines
Deal found 3/9$307
This Expedia deal was found by Cheapflights users on 3/7. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/135:16 pm
AUS
-
ISP
1 stop14h 52m
Frontier
Mon 7/2010:03 am
ISP
-
AUS
1 stop7h 18m
Frontier
Deal found 3/7$330
This Kiwi.com deal was found by Cheapflights users on 3/10. 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.
Thu 3/268:16 pm
AUS
-
ISP
1 stop15h 31m
Multiple Airlines
Mon 3/308:45 pm
ISP
-
AUS
2 stops20h 19m
Multiple Airlines
Deal found 3/10$354
This Southwest deal was found by Cheapflights users on 3/11. 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.
Tue 4/75:50 am
AUS
-
ISP
1 stop7h 00m
Southwest
Tue 4/144:10 pm
ISP
-
AUS
1 stop6h 05m
Southwest
Deal found 3/11$367
This Kiwi.com deal was found by Cheapflights users on 3/9. 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 4/28:12 pm
AUS
-
ISP
1 stop13h 44m
Multiple Airlines
Mon 4/68:45 pm
ISP
-
AUS
2 stops28h 39m
Multiple Airlines
Deal found 3/9$369
This Southwest deal was found by Cheapflights users on 3/11. 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.
Sat 5/95:00 am
AUS
-
ISP
1 stop5h 35m
Southwest
Tue 5/196:30 am
ISP
-
AUS
1 stop5h 50m
Southwest
Deal found 3/11$373

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 March 11, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$240
(Expedia)

One-way from

$101
(Frontier)

Popular in

March

Cheapest in

January

Average price

$403
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. 3% potential increase in price ($12 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($8 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 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 March 11, 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

Mon 7/13

5:16 pm-9:08 am

1 stop14h 52m

Islip Long Island

Mon 7/20

10:03 am-4:21 pm

1 stop7h 18m

$330

AustinIslip

AUS - ISP

AUSISP

Austin Bergstrom

Tue 4/7

5:50 am-1:50 pm

1 stop7h 00m

Islip Long Island

Tue 4/14

4:10 pm-9:15 pm

1 stop6h 05m

$367
Quickest round-trip

AustinIslip

AUS - ISP

AUSISP

Austin Bergstrom

Sat 5/9

5:00 am-11:35 am

1 stop5h 35m

Islip Long Island

Tue 5/19

6:30 am-11:20 am

1 stop5h 50m

$373

AustinIslip

AUS - ISP

AUSISP

Austin Bergstrom

Fri 4/3

8:12 pm-10:30 am

1 stop13h 18m

Islip Long Island

Tue 4/7

5:43 pm-7:17 pm

1 stop26h 34m

$384

AustinIslip

AUS - ISP

AUSISP

Austin Bergstrom

Wed 3/25

4:14 pm-4:13 pm

2 stops22h 59m

Islip Long Island

Sun 3/29

5:08 pm-7:17 pm

1 stop27h 09m

$386

AustinIslip

AUS - ISP

AUSISP

Austin Bergstrom

Fri 6/5

5:16 pm-9:08 am

1 stop14h 52m

Islip Long Island

Sun 6/7

7:30 am-11:40 pm

2 stops17h 10m

$417

AustinIslip

AUS - ISP

AUSISP

Austin Bergstrom

Thu 4/30

2:55 pm-11:30 pm

2 stops7h 35m

Islip Long Island

Sun 5/3

11:50 am-9:05 pm

2 stops10h 15m

$445

AustinIslip

AUS - ISP

AUSISP

Austin Bergstrom

Fri 6/5

3:45 pm-11:40 pm

1 stop6h 55m

Islip Long Island

Sun 6/7

6:00 am-10:35 am

1 stop5h 35m

$447

AustinIslip

AUS - ISP

AUSISP

Austin Bergstrom

Mon 7/13

5:35 am-2:30 pm

2 stops7h 55m

Islip Long Island

Mon 7/20

5:20 am-11:00 am

1 stop6h 40m

$462
Cheapest one-way

AustinIslip

AUS - ISP

AUSISP

Austin Bergstrom

Sun 4/19

8:20 pm-9:13 am

1 stop11h 53m

$101

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/7

Showing 1-10 of 17 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 March.
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 March 11, 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
4,317 reviews

Entertainment

7.5

Crew

8.6

Food

7.0

Boarding

8.1

Overall

8.0

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
4,317 reviews
Southwest
8.0
Very good
4,317 reviews

Entertainment

7.5

Crew

8.6

Food

7.0

Boarding

8.1

Overall

8.0

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 7h. 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.

  • 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?

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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 March 11, 2026.
AirlineCheapestAverageFlexibilityOn-time
SouthwestCheapest$388Average$536FlexibilityNo cancel feeOn-time63%

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