$439 Cheap Flights from Austin (AUS) to Sydney (SYD)

View $439 flight on Sat, Feb 7, 2026Opens in a new window

Popular airlines from Austin-Bergstrom Intl. Airport (AUS) to Sydney Airport (SYD)

Cheap Flights from Austin to Sydney (AUS-SYD)

Prices were available within the past 7 days and start at $439 for one-way flights and $845 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Air Canada
Wed, Feb 25 - Tue, Mar 17
AUS
Austin
SYD
Sydney
$845 Roundtrip, found 1 day ago
$845
Roundtrip
found 1 day ago
Select Air Canada flight, departing Wed, Feb 25 from Austin to Sydney, returning Tue, Mar 17, priced at $845 found 1 day ago
Air Canada
Wed, Feb 25 - Tue, Mar 17
AUS
Austin
SYD
Sydney
$847 Roundtrip, found 1 day ago
$847
Roundtrip
found 1 day ago
Select Air Canada flight, departing Wed, Feb 25 from Austin to Sydney, returning Tue, Mar 17, priced at $847 found 1 day ago
Air Canada
Tue, May 19 - Sun, May 31
AUS
Austin
SYD
Sydney
$847 Roundtrip, found 2 days ago
$847
Roundtrip
found 2 days ago
Select Air Canada flight, departing Tue, May 19 from Austin to Sydney, returning Sun, May 31, priced at $847 found 2 days ago
Qantas Airways
Sun, Feb 1 - Sun, Feb 8
AUS
Austin
SYD
Sydney
$863 Roundtrip, found 6 days ago
$863
Roundtrip
found 6 days ago
Select Qantas Airways flight, departing Sun, Feb 1 from Austin to Sydney, returning Sun, Feb 8, priced at $863 found 6 days ago
United
Tue, Nov 4 - Sat, Nov 15
AUS
Austin
SYD
Sydney
$869 Roundtrip, found 5 days ago
$869
Roundtrip
found 5 days ago
Select United flight, departing Tue, Nov 4 from Austin to Sydney, returning Sat, Nov 15, priced at $869 found 5 days ago
American Airlines
Fri, Nov 7 - Fri, Nov 21
AUS
Austin
SYD
Sydney
$877 Roundtrip, found 6 days ago
$877
Roundtrip
found 6 days ago
Select American Airlines flight, departing Fri, Nov 7 from Austin to Sydney, returning Fri, Nov 21, priced at $877 found 6 days ago
Delta
Wed, Nov 19 - Wed, Nov 26
AUS
Austin
SYD
Sydney
$1,264 Roundtrip, found 1 hour ago
$1,264
Roundtrip
found 1 hour ago
Select Delta flight, departing Wed, Nov 19 from Austin to Sydney, returning Wed, Nov 26, priced at $1,264 found 1 hour ago
Air New Zealand
Wed, Nov 26 - Wed, Jan 14
AUS
Austin
SYD
Sydney
$1,335 Roundtrip, found 2 days ago
$1,335
Roundtrip
found 2 days ago
Select Air New Zealand flight, departing Wed, Nov 26 from Austin to Sydney, returning Wed, Jan 14, priced at $1,335 found 2 days ago
All Nippon Airways
Sun, May 17 - Wed, May 27
AUS
Austin
SYD
Sydney
$1,383 Roundtrip, found 4 days ago
$1,383
Roundtrip
found 4 days ago
Select All Nippon Airways flight, departing Sun, May 17 from Austin to Sydney, returning Wed, May 27, priced at $1,383 found 4 days ago
Hawaiian Airlines
Fri, Jan 9 - Fri, Jan 16
AUS
Austin
SYD
Sydney
$1,507 Roundtrip, found 21 hours ago
$1,507
Roundtrip
found 21 hours ago
Select Hawaiian Airlines flight, departing Fri, Jan 9 from Austin to Sydney, returning Fri, Jan 16, priced at $1,507 found 21 hours ago

Find the cheapest month to fly from Austin (AUS) to Sydney (SYD)

August is typically the cheapest month to fly

From $887 - $1,578 per traveler.

Alternative airports near Sydney

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Kingsford Smith Intl. SYD. Cheapest option available. Average driving time to city center is 16 minutes. Flights from $964
SYD
Kingsford Smith Intl.
Cheapest
Average driving time to city center16 min
Flights from $964
Flights from Austin (AUS) to Sydney (SYD)
Origin airport
Austin-Bergstrom Intl.
Destination airport
Kingsford Smith Intl.
Airlines serving
Air Canada, Air New Zealand, Air Tahiti Nui, Alaska Airlines, All Nippon Airways, American Airlines, Asiana Airlines, British Airways, China Airlines, Delta, Fiji Airways, Hawaiian Airlines, Japan Airlines, Korean Air, Qantas Airways, Qatar Airways, United
Roundtrip price
$844
Distance
8475 mi

Austin to Sydney Flights

The cheapest times to fly from Austin to Sydney

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Austin to Sydney are during the month of February. You can find some of the cheapest flights from Austin to Sydney with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Austin to Sydney

Sunday is one of the best days to book for cheap flights from Austin to Sydney: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Austin to Sydney

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Austin to Sydney in 2025. You can also book with separate airlines for your outbound and return journeys, from $439 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Austin to Sydney flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Austin to Sydney airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from Austin-Bergstrom Intl. Airport (AUS) to Kingsford Smith Intl. Airport (SYD) cost?
Grab a cheap one-way flight from $439 or cheap return flight from $845 from Austin-Bergstrom Intl. Airport (AUS) to Kingsford Smith Intl. Airport (SYD) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight deals on this route.
What is the cheapest month to fly from Austin-Bergstrom Intl. Airport (AUS) to Kingsford Smith Intl. Airport (SYD)?
February is the most affordable month to fly from AUS to SYD. Timing your trip outside of the busy season is often the key to finding better fares.
What is the cheapest airline that flies from Austin-Bergstrom Intl. Airport (AUS) to Kingsford Smith Intl. Airport (SYD)?
To find the cheapest airline flying from AUS to SYD, use Expedia's filter tool. Customize your search based on what matters most to you, such as preferred carriers and ideal departure window. You can then sort your results by "Price (lowest to highest)" to see the cheapest fares upfront.
How many flights per day from Austin-Bergstrom Intl. Airport (AUS) to Kingsford Smith Intl. Airport (SYD)?
There are no daily direct flights from Austin-Bergstrom Intl. Airport (AUS) to Kingsford Smith Intl. Airport (SYD). But you can opt for flights with layovers. Filter your search results on Expedia to include one or two stops, and you'll be soaring above the clouds in no time.
What day of the week has the most flights from AUS to SYD?
Usually you'll have the most choice when it comes to flights on a Friday. Tuesdays are often the quietest.* However, this can vary depending on the season, carrier and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Austin-Bergstrom Intl. Airport (AUS) to Kingsford Smith Intl. Airport (SYD)?
To avoid possible delays on the Austin-Bergstrom Intl. Airport (AUS) to Kingsford Smith Intl. Airport (SYD) route, fly before 3 PM. Departures after this hour have a 22% higher chance of being canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Austin-Bergstrom Intl. Airport (AUS) to Kingsford Smith Intl. Airport (SYD) last-minute?
Booking your ticket from AUS to SYD right before your journey is generally more expensive. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book an AUS to SYD flight and hotel package?
Compared with arranging flights and hotels separately, booking an AUS to SYD flight and hotel package with Expedia could result in significant savings. Better still, having everything in one place takes the hassle out of planning your trip. Simply secure your flights and choose from our wide range of hotels, then personalize your trip with extras like tours, activities and car rentals.
Can I cancel or change the date of my flight from Austin-Bergstrom Intl. Airport (AUS) to Kingsford Smith Intl. Airport (SYD)?
If you booked your AUS to SYD flight within the last 24 hours, you may be able to modify or cancel it at no cost. Depending on the airline and the type of ticket you purchased, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, visit our Customer Service portal for further details.

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*Available to One Key members.