AUS - ISP

$140 Find Cheap Flights from Austin to Islip - Compare and Save

1 adult
1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
$303
Typical prices: $391-$546
Frontier
Wed 10/17Fri 10/19
AUS - ISP • 1 stop
Cheapest one-way
$140
Typical prices: $139-$233
Frontier
Sun 10/28
AUS - ISP • 2 stops
Nonstop flights
Not available
There are currently no direct flights between Austin and Islip. You'll need to take a connecting flight to reach the destination.
Insights
Insights
When to travel
November
Cheapest • 41% price drop
May
Most popular
Good to know
+1
Good to know
+1
Top layover airports
Orlando (MCO)
Cheapest • Avg $273 (round-trip)
Baltimore/Washington (BWI)
Shortest trip • 5h 49m (one-way)
Insights
Insights
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We hope you love your trip to Islip!
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Flight Deals

Cheap Flights from Austin to Islip (AUS-ISP)

 
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Austin to Islip

Sat, Oct 17 - Mon, Oct 19
Frontier Logo
5:47 pm - 5:30 pmAUS  Austin Bergstrom-ISP Islip Long Island
22h 43m1 stop Orlando
Frontier Logo
6:55 pm - 9:57 amISP  Islip Long Island-AUS Austin Bergstrom
16h 02m1 stop Orlando
$303Frontier
Fri, Oct 16 - Sun, Oct 18
Frontier Logo
10:52 am - 5:30 pmAUS  Austin Bergstrom-ISP Islip Long Island
29h 38m1 stop Orlando
Frontier Logo
6:25 pm - 9:57 amISP  Islip Long Island-AUS Austin Bergstrom
16h 32m1 stop Orlando
$321Frontier
Wed, Sep 30 - Mon, Oct 5
Frontier Logo
10:58 am - 4:58 pmAUS  Austin Bergstrom-ISP Islip Long Island
29h 00m1 stop Orlando
Frontier Logo
5:43 pm - 10:03 amISP  Islip Long Island-AUS Austin Bergstrom
17h 20m1 stop Orlando
$322Frontier
Mon, Oct 5 - Wed, Oct 7
Multiple Airlines Logo
10:58 am - 12:58 pmAUS  Austin Bergstrom-ISP Islip Long Island
25h 00m2 stops Orlando Wilmington New Hanover County
Multiple Airlines Logo
5:43 pm - 9:57 amISP  Islip Long Island-AUS Austin Bergstrom
17h 14m1 stop Orlando
$341Multiple Airlines
Mon, Oct 5 - Wed, Oct 7
Frontier Logo
10:58 am - 4:58 pmAUS  Austin Bergstrom-ISP Islip Long Island
29h 00m1 stop Orlando
Frontier Logo
5:43 pm - 9:57 amISP  Islip Long Island-AUS Austin Bergstrom
17h 14m1 stop Orlando
$346Frontier
Thu, Dec 3 - Sun, Dec 6
Frontier Logo
9:07 pm - 9:01 amAUS  Austin Bergstrom-ISP Islip Long Island
10h 54m1 stop Orlando
Frontier Logo
9:56 am - 8:12 pmISP  Islip Long Island-AUS Austin Bergstrom
11h 16m1 stop Orlando
$368Frontier
Thu, Oct 1 - Mon, Oct 5
Frontier Logo
10:58 am - 4:58 pmAUS  Austin Bergstrom-ISP Islip Long Island
29h 00m1 stop Orlando
Frontier Logo
5:43 pm - 10:03 amISP  Islip Long Island-AUS Austin Bergstrom
17h 20m1 stop Orlando
$373Frontier
Thu, Oct 15 - Sat, Oct 17
Frontier Logo
10:52 am - 6:00 pmAUS  Austin Bergstrom-ISP Islip Long Island
30h 08m1 stop Orlando
Frontier Logo
6:25 pm - 9:57 amISP  Islip Long Island-AUS Austin Bergstrom
16h 32m1 stop Orlando
$395Frontier
Thu, Oct 1 - Tue, Oct 6
Southwest Logo
6:10 am - 2:30 pmAUS  Austin Bergstrom-ISP Islip Long Island
7h 20m2 stops Houston Hobby Baltimore/Washington
Southwest Logo
12:50 pm - 8:25 pmISP  Islip Long Island-AUS Austin Bergstrom
8h 35m2 stops Baltimore/Washington Nashville Intl
$500Southwest
Mon, Oct 5 - Wed, Oct 7
Southwest Logo
8:25 am - 5:00 pmAUS  Austin Bergstrom-ISP Islip Long Island
7h 35m2 stops Dallas Love Field Baltimore/Washington
Southwest Logo
4:20 pm - 11:20 pmISP  Islip Long Island-AUS Austin Bergstrom
8h 00m2 stops Baltimore/Washington Chicago Midway
$500Southwest
Booking Insights

Price, demand and travel trends for Austin to Islip flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights from Austin to Islip with more confidence.

How much is a round-trip flight from Austin to Islip?

Round-trip flights from Austin to Islip start at $303. Prices are below average for this route right now, with typical round-trip fares ranging from $391 to $546. The lowest price found in the past 5 days was $303 on Frontier.

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Key details for Austin to Islip flights

Low season

February

Cheapest flight

$140
Most popular time to fly and prices are also 18% lower on average.
Flight from Austin to Islip

When to book flights from Austin to Islip

Are your dates flexible? Find out the best times to travel from Austin to Islip based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price

Your Austin to Islip flight questions, answered

Find helpful route details based on KAYAK data, including flight times, airports, airlines and booking questions.

  • Which airports can I use when flying from Austin to Islip?

    Flights from Austin to Islip usually depart from Austin Bergstrom (AUS) and arrive at Islip Long Island (ISP).

  • What cabin classes can I book on flights from Austin to Islip?

    Only Economy Class is available on flights from Austin to Islip.

  • Which airports do connecting flights from Austin to Islip pass through?

    Connecting flights from Austin to Islip most commonly pass through:

    • Baltimore/Washington (BWI) - 95% of one-stop connections
    • Orlando (MCO) - 5% of one-stop connections
    Together, these airports account for 100% of one-stop bookings on this route.

  • Can I save money by using flexible dates for flights from Austin to Islip?

    Yes. Being flexible with your travel dates can save you up to 59% on the Austin to Islip route. Tuesday is the cheapest departure day at $407 round-trip on average, while Friday is the most expensive at $976, a difference of $569. KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

  • How long is a flight from Austin to Islip?

    A nonstop flight from Austin to Islip takes 0h 00m, covering 1,556 miles.

  • Do I need a passport to fly from Austin to Islip?

    No, a passport is not required for this domestic route, but you will need a real ID-compliant driver's license, a state ID, or another TSA-accepted form of identification.

  • Have flight prices from Austin to Islip changed much recently?

    Yes. Based on fares seen in the past 5 days, round-trip prices on this route showed a wide range, from about $303 to $1,503. That means the highest observed fare was about 5x higher than the lowest one.

  • How are flight prices from Austin to Islip looking right now?

    One-way fares from Austin to Islip are currently higher than usual. Average one-way flight prices are about $165, which is 17% above the typical average for this route.

  • How much time can I save by choosing a different layover airport from Austin to Islip?

    Flying via Baltimore/Washington (BWI) gives the shortest average 1-stop total travel time at 5h 49m, compared with 12h 55m via Orlando (MCO).

  • What is the time difference between Austin and Islip?

    Islip is 1 hour ahead of Austin (Eastern Time vs Central Time). Plan for the time shift when scheduling connections or first-day activities.

  • What car rental options are available at Islip Long Island Airport (ISP)?

    Islip Long Island Airport (ISP) hosts 5 major car rental companies, with daily rates starting from around $36 for economy cars. Top options include:
    • Budget
    • Enterprise Rent-A-Car
    • Avis
    • National
    • Empire Rent A Car

  • How much should I expect to pay for a Austin to Islip flight?

    Round-trip flights from Austin to Islip range from $391 to $546, with an average of $466 over the past 12 months. Anything below $391 counts as a good deal.

Your guide to booking Austin to Islip flights

Get tips on when to book, when to fly and what to know before your trip.
  • If your dates can be flexible, aim for a Tuesday departure instead of Friday. On this route, Tuesday flights average $407 - about $569 less than Friday (58% savings) based on the last 12 months.
  • If you can choose when to travel, plan your Austin to Islip trip for November. Fares historically average $273 round-trip in that month - typically $1,110 less than the most expensive month, which is September (based on the last 12 months).

More options for your flight from Austin to Islip

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