$139+ Cheap flights from Austin to Islip, NY (AUS - ISP)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 12/20. Fares are subject to change and may not be available on all flights or dates of travel.
AUS — ISP
Nov 23 — Nov 301
Round-trip
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
Best
Last-minute
One-way
Cheapest flights from Austin to IslipExplore 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 October 24, 2026.
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 October 24, 2026.
This Southwest deal was found by Cheapflights users on 10/22. 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 11/259:30 pm -
1 stop12h 30m
Tue 12/16:05 am -
1 stop6h 00m
Deal found 10/22![Southwest logo]()
$433
This Southwest deal was found by Cheapflights users on 10/22. 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 11/259:30 pm -
1 stop12h 30m
Mon 11/305:35 am -
1 stop9h 55m
Deal found 10/22![Southwest logo]()
$478
This JetBlue deal was found by Cheapflights users on 10/19. 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.
Mon 11/91:00 pm -
1 stop7h 37m
Wed 11/116:00 am -
1 stop6h 57m
Deal found 10/19![JetBlue logo]()
$559
This KAYAK deal was found by Cheapflights users on 10/19. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/117:15 am -
1 stop13h 22m
Thu 11/126:00 am -
1 stop6h 57m
Deal found 10/19![JetBlue logo]()
$568
This KAYAK deal was found by Cheapflights users on 10/23. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/187:15 am -
1 stop13h 22m
Thu 11/196:00 am -
1 stop9h 40m
Deal found 10/23![JetBlue logo]()
$593
This Southwest deal was found by Cheapflights users on 10/23. 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 11/712:15 pm -
1 stop7h 15m
Wed 11/114:05 pm -
1 stop6h 10m
Deal found 10/23![Southwest logo]()
$637
This KAYAK deal was found by Cheapflights users on 10/19. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/267:00 am -
1 stop9h 42m
Thu 12/316:00 am -
1 stop9h 53m
Deal found 10/19![JetBlue logo]()
$639
Best flights from Austin to IslipDiscover carefully curated flight deals from Austin to Islip that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 24, 2026.
Discover carefully curated flight deals from Austin to Islip that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 24, 2026.
This Southwest deal was found by Cheapflights users on 10/22. 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 11/259:30 pm -
1 stop12h 30m
Tue 12/112:30 pm -
2 stops7h 20m
Deal found 10/22![Southwest logo]()
$463
This JetBlue deal was found by Cheapflights users on 10/22. 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.
Sat 2/271:00 pm -
1 stop7h 27m
Tue 3/25:55 am -
1 stop6h 53m
Deal found 10/22![JetBlue logo]()
$499
This Southwest deal was found by Cheapflights users on 10/22. 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 11/259:30 pm -
1 stop12h 30m
Mon 11/305:35 am -
1 stop9h 55m
Deal found 10/22![Southwest logo]()
$478
This JetBlue deal was found by Cheapflights users on 10/19. 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.
Mon 11/91:00 pm -
1 stop7h 37m
Wed 11/116:00 am -
1 stop6h 57m
Deal found 10/19![JetBlue logo]()
$559
This KAYAK deal was found by Cheapflights users on 10/19. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/117:15 am -
1 stop13h 22m
Thu 11/126:00 am -
1 stop6h 57m
Deal found 10/19![JetBlue logo]()
$568
This Southwest deal was found by Cheapflights users on 10/23. 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 11/711:30 am -
2 stops9h 20m
Wed 11/114:05 pm -
1 stop6h 10m
Deal found 10/23![Southwest logo]()
$642
This KAYAK deal was found by Cheapflights users on 10/23. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/187:15 am -
1 stop13h 22m
Thu 11/196:00 am -
1 stop9h 40m
Deal found 10/23![JetBlue logo]()
$593
This KAYAK deal was found by Cheapflights users on 10/19. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/247:00 am -
1 stop9h 42m
Fri 1/16:00 am -
1 stop9h 53m
Deal found 10/19![JetBlue logo]()
$614
This KAYAK deal was found by Cheapflights users on 10/19. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/257:00 am -
1 stop9h 42m
Thu 12/316:00 am -
1 stop9h 53m
Deal found 10/19![JetBlue logo]()
$614
This KAYAK deal was found by Cheapflights users on 10/19. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/267:00 am -
1 stop9h 42m
Fri 1/16:00 am -
1 stop9h 53m
Deal found 10/19![JetBlue logo]()
$694
Last-minute flights from Austin to IslipDiscover last-minute flight deals from Austin to Islip. Data last updated October 24, 2026 and is based on user searches.
Discover last-minute flight deals from Austin to Islip. Data last updated October 24, 2026 and is based on user searches.
This Southwest deal was found by Cheapflights users on 10/23. 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 11/712:15 pm -
1 stop7h 15m
Wed 11/114:05 pm -
1 stop6h 10m
Deal found 10/23![Southwest logo]()
$637
This JetBlue deal was found by Cheapflights users on 10/19. 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.
Mon 11/91:00 pm -
1 stop7h 37m
Wed 11/116:00 am -
1 stop6h 57m
Deal found 10/19![JetBlue logo]()
$559
This KAYAK deal was found by Cheapflights users on 10/19. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/117:15 am -
1 stop13h 22m
Thu 11/126:00 am -
1 stop6h 57m
Deal found 10/19![JetBlue logo]()
$568
This KAYAK deal was found by Cheapflights users on 10/23. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/187:15 am -
1 stop13h 22m
Thu 11/196:00 am -
1 stop9h 40m
Deal found 10/23![JetBlue logo]()
$593
This Southwest deal was found by Cheapflights users on 10/22. 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 11/259:30 pm -
1 stop12h 30m
Tue 12/16:05 am -
1 stop6h 00m
Deal found 10/22![Southwest logo]()
$433
This Southwest deal was found by Cheapflights users on 10/22. 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 11/259:30 pm -
1 stop12h 30m
Mon 11/305:35 am -
1 stop9h 55m
Deal found 10/22![Southwest logo]()
$478
One-way flights from Austin to IslipSearch for one-way flight options from Austin to Islip. Find affordable one-way fares based on user searches. Data last updated October 24, 2026.
Search for one-way flight options from Austin to Islip. Find affordable one-way fares based on user searches. Data last updated October 24, 2026.
This Southwest deal was found by Cheapflights users on 10/19. 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.
Sun 12/209:30 pm -
1 stop10h 15m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/19![Southwest logo]()
$139
This CheapOair deal was found by Cheapflights users on 10/23. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/3011:51 am -
1 stop28h 40m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/23![Frontier logo]()
$231
This JetBlue deal was found by Cheapflights users on 10/20. 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 2/251:00 pm -
1 stop7h 27m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/20![JetBlue logo]()
$240
This Priceline deal was found by Cheapflights users on 10/20. 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.
Thu 12/247:00 am -
1 stop9h 42m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/20![JetBlue logo]()
$245
This JetBlue deal was found by Cheapflights users on 10/19. 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 12/1710:01 am -
1 stop6h 41m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/19![JetBlue logo]()
$295
This JetBlue deal was found by Cheapflights users on 10/21. 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.
Sun 2/281:00 pm -
1 stop7h 27m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/21![JetBlue logo]()
$305
This Kiwi.com deal was found by Cheapflights users on 10/23. 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 10/3011:51 am -
3 stops30h 11m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/23![Multiple Airlines logo]()
$310
This Southwest deal was found by Cheapflights users on 10/19. 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 11/75:30 am -
1 stop7h 50m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/19![Southwest logo]()
$319
This JetBlue deal was found by Cheapflights users on 10/20. 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.
Mon 12/2110:01 am -
1 stop7h 25m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/20![JetBlue logo]()
$320
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 October 24, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $433 (Southwest) |
One-way from | $139 (Southwest) |
Popular in | October |
Cheapest in | January |
Average price | $514 |
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 7,457,451 searches. Data last updated October 24, 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
Cheapest round-trip
AustinIslip
AUS Austin Bergstrom - ISP Islip Long Island
AUSISP
Austin Bergstrom
Thu 12/24
10:45 am-2:22 pm
3 stops26h 37m
Islip Long Island
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$231
AustinIslip
AUS Austin Bergstrom - ISP Islip Long Island
AUSISP
Austin Bergstrom
Tue 2/23
1:00 pm-9:27 pm
1 stop7h 27m
Islip Long Island
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$240
AustinIslip
AUS Austin Bergstrom - ISP Islip Long Island
AUSISP
Austin Bergstrom
Thu 2/25
1:00 pm-9:27 pm
1 stop7h 27m
Islip Long Island
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$240
AustinIslip
AUS Austin Bergstrom - ISP Islip Long Island
AUSISP
Austin Bergstrom
Sun 12/20
1:45 pm-11:50 pm
2 stops9h 05m
Islip Long Island
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$264
Quickest round-trip
AustinIslip
AUS Austin Bergstrom - ISP Islip Long Island
AUSISP
Austin Bergstrom
Thu 12/17
10:01 am-5:42 pm
1 stop6h 41m
Islip Long Island
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$295
AustinIslip
AUS Austin Bergstrom - ISP Islip Long Island
AUSISP
Austin Bergstrom
Sun 2/28
1:00 pm-9:27 pm
1 stop7h 27m
Islip Long Island
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$305
AustinIslip
AUS Austin Bergstrom - ISP Islip Long Island
AUSISP
Austin Bergstrom
Fri 10/30
11:51 am-7:02 pm
3 stops30h 11m
Islip Long Island
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$310
AustinIslip
AUS Austin Bergstrom - ISP Islip Long Island
AUSISP
Austin Bergstrom
Sat 11/7
5:30 am-2:20 pm
1 stop7h 50m
Islip Long Island
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$319
AustinIslip
AUS Austin Bergstrom - ISP Islip Long Island
AUSISP
Austin Bergstrom
Mon 12/21
10:01 am-6:26 pm
1 stop7h 25m
Islip Long Island
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$320
AustinIslip
AUS Austin Bergstrom - ISP Islip Long Island
AUSISP
Austin Bergstrom
Tue 12/22
10:01 am-5:42 pm
1 stop6h 41m
Islip Long Island
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$385
Showing 1-10 of 21 resultsSorted by cheapest first
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 October.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy1 star | Trust Score*3 stars |
- 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.
AUS-ISP
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 October 24, 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.
Overall
7.9
Crew
8.6
Entertainment
7.4
Boarding
8.1
Comfort
8.0
Food
7.0
Reviews
1 / 20
8.0
ExcellentPatricia,Oct 2026
DAL - TPA
Overall
7.9
Crew
8.6
Entertainment
7.4
Boarding
8.1
Comfort
8.0
Food
7.0
Reviews
1 / 20
8.0
ExcellentPatricia,Oct 2026
DAL - TPA
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.
Traveling to a place near Islip?
Book flights to Islip if you plan to visit one of these locationsRiverhead
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
Complete your trip
Flights by cabin class
Islip flight routes
Other flight options
Other flights from Austin
Popular flights
Alternative routes for Austin to Islip
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Islip by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Austin to Islip by cabin class
Find flights from Austin to Islip, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Other flights to Islip
Explore flights to Islip departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on October 24, 2026.
Austin and Islip flights
Browse other Austin and Islip flight options. Last updated on October 24, 2026.
Other flights from Austin
Browse through other flights departing from Austin. Flights are based on user searches made on Cheapflights and were last updated on October 24, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
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 7,457,451 searches. Data last updated October 24, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$390 | Average$526 | FlexibilityNo cancel fee | On-time63% |