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$735+ Cheap flights from Austin (AUS) to Sydney (SYD)

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 10/5. Fares are subject to change and may not be available on all flights or dates of travel.
AUS — SYD
Oct 25 — Nov 11
Sat 10/25
Sat 11/1
1 adult, Economy
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Cheapflights Tip: The best prices from Austin Bergstrom to Sydney Kingsford Smith are usually found in May or August, booked 71 days in advance, depart on a Saturday or Friday and return on a Tuesday

Cheap flight deals from Austin to Sydney

Discover tips and strategies to find the most affordable flight options for your journey from Austin (AUS) to Sydney (SYD). 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 September 25, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$975
(oojo)

One-way from

$735
(Kiwi.com)

Popular in

December

Cheapest in

May

Average price

$1,163
Provider with most accurate pricing for Austin Bergstrom-Sydney Kingsford Smith flight deals.
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Provider most trusted by Cheapflights users for Austin Bergstrom-Sydney Kingsford Smith flights.
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From Austin Bergstrom to Sydney Kingsford Smith
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One-way flight from Austin Bergstrom to Sydney Kingsford Smith
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Highest demand for flights based on searches. 17% potential increase in price ($275 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($45 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find flight deals from Austin to Sydney

Cheapest flights from Austin to Sydney
Explore the most affordable flight options available from Austin to Sydney. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 25, 2025.

This Alaska Airlines deal was found by Cheapflights users on 9/23. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/47:18 pmAUS - SYD
2 stops31h 27mAlaska Airlines
Fri 11/149:40 pmSYD - AUS
2 stops34h 34mAlaska Airlines
Deal found 9/23$1,067
This Flighttix deal was found by Cheapflights users on 9/23. 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 Flighttix is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/284:18 pmAUS - SYD
2 stops23h 42mUnited Airlines
Sun 10/1211:20 amSYD - AUS
2 stops23h 34mUnited Airlines
Deal found 9/23$1,083
This FlightHub deal was found by Cheapflights users on 9/24. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/105:36 pmAUS - SYD
1 stop20h 19mQantas Airways
Fri 11/216:30 amSYD - AUS
2 stops23h 23mQantas Airways
Deal found 9/24$1,098
This FlightHub deal was found by Cheapflights users on 9/22. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/106:10 pmAUS - SYD
1 stop19h 45mQantas Airways
Thu 1/87:05 amSYD - AUS
2 stops21h 31mQantas Airways
Deal found 9/22$1,099
This United Airlines deal was found by Cheapflights users on 9/22. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/233:00 pmAUS - SYD
2 stops24h 55mUnited Airlines
Tue 9/3010:20 amSYD - AUS
1 stop21h 11mUnited Airlines
Deal found 9/22$1,113
This Delta deal was found by Cheapflights users on 9/22. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/232:28 pmAUS - SYD
2 stops25h 07mDelta
Tue 9/309:25 amSYD - AUS
2 stops26h 35mDelta
Deal found 9/22$1,117
This oojo deal was found by Cheapflights users on 9/24. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/143:32 pmAUS - SYD
1 stop22h 23mQantas Airways
Sun 1/118:10 pmSYD - AUS
2 stops36h 40mQantas Airways
Deal found 9/24$1,125

Cheapflights Fare Finder

 
Customize your flight search to find flights from Austin to Sydney 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 September 25, 2025.
Use the filters below to find and compare flights from Austin to Sydney that are best for you.

Fly from

Austin

Fly to

Sydney

Route

Depart

Return

Price

AustinSydney

AUS - SYD

AUSSYD

Austin Bergstrom

Sun 9/28

4:44 pm-7:00 am

1 stop23h 16m

Sydney Kingsford Smith

Sun 10/12

10:30 am-5:08 pm

2 stops22h 38m

$1,087

AustinSydney

AUS - SYD

AUSSYD

Austin Bergstrom

Sun 12/14

5:00 pm-6:55 am

1 stop20h 55m

Sydney Kingsford Smith

Mon 1/12

6:05 am-3:50 pm

2 stops26h 45m

$1,098

AustinSydney

AUS - SYD

AUSSYD

Austin Bergstrom

Mon 11/10

5:36 pm-6:55 am

1 stop20h 19m

Sydney Kingsford Smith

Fri 11/21

6:30 am-12:53 pm

2 stops23h 23m

$1,098

AustinSydney

AUS - SYD

AUSSYD

Austin Bergstrom

Sun 12/14

3:32 pm-6:55 am

1 stop22h 23m

Sydney Kingsford Smith

Sun 1/11

8:10 pm-3:50 pm

2 stops36h 40m

$1,125

AustinSydney

AUS - SYD

AUSSYD

Austin Bergstrom

Wed 12/10

5:59 pm-10:30 am

2 stops23h 31m

Sydney Kingsford Smith

Thu 1/8

9:55 am-9:29 pm

2 stops28h 34m

$1,141

AustinSydney

AUS - SYD

AUSSYD

Austin Bergstrom

Fri 10/24

1:54 pm-8:05 am

1 stop26h 11m

Sydney Kingsford Smith

Fri 10/31

1:05 pm-7:52 pm

1 stop22h 47m

$1,218

AustinSydney

AUS - SYD

AUSSYD

Austin Bergstrom

Tue 11/4

2:05 pm-8:30 am

1 stop25h 25m

Sydney Kingsford Smith

Fri 11/14

10:40 am-9:29 pm

1 stop27h 49m

$1,262

AustinSydney

AUS - SYD

AUSSYD

Austin Bergstrom

Sun 12/14

8:15 pm-9:00 am

1 stop19h 45m

Sydney Kingsford Smith

Sun 1/11

11:15 am-8:38 pm

1 stop26h 23m

$1,265

AustinSydney

AUS - SYD

AUSSYD

Austin Bergstrom

Sat 10/18

4:21 pm-8:00 am

2 stops23h 39m

Sydney Kingsford Smith

Sat 10/25

10:30 am-7:24 pm

2 stops24h 54m

$1,267

AustinSydney

AUS - SYD

AUSSYD

Austin Bergstrom

Mon 10/6

10:23 am-10:45 am

3 stops56h 22m

$797

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/24

Showing 1-10 of 19 results
1
2

Compare providers for flights from Austin to Sydney

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 Sydney in September.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice 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-Sydney flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Austin-Sydney flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Austin-Sydney flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Austin-Sydney 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-Sydney 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 Sydney

Have a flexible travel schedule? Discover the best time to fly to Sydney 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 Sydney

How far ahead should I book a flight from Austin to Sydney?

Use this chart to determine the optimal time to book a round-trip flight from Austin to Sydney. Price data was last updated on September 19, 2025.

The price you pay for your flight from Austin to Sydney may vary depending on when you book. For the best chance of a lower fare, look to book 71 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

What is the cheapest month to book a flight from Austin to Sydney?

Currently, March is the cheapest month in which you can book a flight from Austin to Sydney (average of $1,032). Flying from Austin to Sydney in December is currently the most expensive (average of $1,626). 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.

What is the cheapest time of day to fly from AUS to SYD?

Find hourly flight availability from Austin to Sydney. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 25, 2025.

It’s typically best to fly out from Austin to Sydney in the afternoon. Doing so could potentially save you 84% on the flight price compared to flying at noon, which is usually more expensive.

What is the cheapest day to fly from Austin to Sydney?

Use this chart to determine the cheapest time to fly round-trip from Austin to Sydney. Price data was last updated on March 30, 2025.

Travelers seeking maximum savings on their Austin to Sydney flight should consider departing on Friday afternoons when fares are most often at their lowest. Friday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

Reviews of airlines servicing Sydney

Get insights into the airlines that provide service to Sydney. 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 Sydney. Reviews last updated September 25, 2025.
See what other customers who have flown with Fiji Airways, Delta, and Qantas Airways from Austin to Sydney have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Fiji Airways
8.0
Very good
205 reviews

Comfort

8.0

Overall

8.0

Entertainment

7.4

Food

7.5

Crew

8.5

Boarding

8.1

Reviews

1 / 16
6.0
Good

Christopher,Jun 2025

LAX - NAN

No attempt to make you comfortable. All they care about is how can they pack more people on the plane and how can they charge you for as much as possible. I find it invasive and discriminatory that you weigh my carryon (or any of my naggage frankly). If I physically weighed 15kilos more and my bag weighed under your stupid and arbitrary weight limit I would not be charged... but if I'm a person who is skinny and weighs less, well heaven forbid my bag is 1 kilo heavier than you wish!! $$$ VERY VERY DISCRIMINATORY POLICY!! NEXT TIME I'LL TRY TO EAT MY BAGGAGE SO THAT I CAN TAKE ON AS MUCH WEIGHT AS I WANT! Yeah... sounds ridiculous doesn't it!? No more ridiculous than you charging more for people who bring more baggage weight while letting obese people carry on all the weight they want! It just proves it has absolutely nothing to do with safety, or even your operating costs... Just squeezing as much money out of us as possible!!
Fiji Airways
8.0
Very good
205 reviews
Fiji Airways
8.0
Very good
205 reviews

Comfort

8.0

Overall

8.0

Entertainment

7.4

Food

7.5

Crew

8.5

Boarding

8.1

Reviews

1 / 16
6.0
Good

Christopher,Jun 2025

LAX - NAN

No attempt to make you comfortable. All they care about is how can they pack more people on the plane and how can they charge you for as much as possible. I find it invasive and discriminatory that you weigh my carryon (or any of my naggage frankly). If I physically weighed 15kilos more and my bag weighed under your stupid and arbitrary weight limit I would not be charged... but if I'm a person who is skinny and weighs less, well heaven forbid my bag is 1 kilo heavier than you wish!! $$$ VERY VERY DISCRIMINATORY POLICY!! NEXT TIME I'LL TRY TO EAT MY BAGGAGE SO THAT I CAN TAKE ON AS MUCH WEIGHT AS I WANT! Yeah... sounds ridiculous doesn't it!? No more ridiculous than you charging more for people who bring more baggage weight while letting obese people carry on all the weight they want! It just proves it has absolutely nothing to do with safety, or even your operating costs... Just squeezing as much money out of us as possible!!
Delta
8.0
Very good
7,973 reviews
Fiji Airways
8.0
Very good
205 reviews

Comfort

8.0

Overall

8.0

Entertainment

7.4

Food

7.5

Crew

8.5

Boarding

8.1

Reviews

1 / 16
6.0
Good

Christopher,Jun 2025

LAX - NAN

No attempt to make you comfortable. All they care about is how can they pack more people on the plane and how can they charge you for as much as possible. I find it invasive and discriminatory that you weigh my carryon (or any of my naggage frankly). If I physically weighed 15kilos more and my bag weighed under your stupid and arbitrary weight limit I would not be charged... but if I'm a person who is skinny and weighs less, well heaven forbid my bag is 1 kilo heavier than you wish!! $$$ VERY VERY DISCRIMINATORY POLICY!! NEXT TIME I'LL TRY TO EAT MY BAGGAGE SO THAT I CAN TAKE ON AS MUCH WEIGHT AS I WANT! Yeah... sounds ridiculous doesn't it!? No more ridiculous than you charging more for people who bring more baggage weight while letting obese people carry on all the weight they want! It just proves it has absolutely nothing to do with safety, or even your operating costs... Just squeezing as much money out of us as possible!!
Qantas Airways
7.5
Good
908 reviews
Fiji Airways
8.0
Very good
205 reviews

Comfort

8.0

Overall

8.0

Entertainment

7.4

Food

7.5

Crew

8.5

Boarding

8.1

Reviews

1 / 16
6.0
Good

Christopher,Jun 2025

LAX - NAN

No attempt to make you comfortable. All they care about is how can they pack more people on the plane and how can they charge you for as much as possible. I find it invasive and discriminatory that you weigh my carryon (or any of my naggage frankly). If I physically weighed 15kilos more and my bag weighed under your stupid and arbitrary weight limit I would not be charged... but if I'm a person who is skinny and weighs less, well heaven forbid my bag is 1 kilo heavier than you wish!! $$$ VERY VERY DISCRIMINATORY POLICY!! NEXT TIME I'LL TRY TO EAT MY BAGGAGE SO THAT I CAN TAKE ON AS MUCH WEIGHT AS I WANT! Yeah... sounds ridiculous doesn't it!? No more ridiculous than you charging more for people who bring more baggage weight while letting obese people carry on all the weight they want! It just proves it has absolutely nothing to do with safety, or even your operating costs... Just squeezing as much money out of us as possible!!
United Airlines
7.4
Good
8,926 reviews
Fiji Airways
8.0
Very good
205 reviews

Comfort

8.0

Overall

8.0

Entertainment

7.4

Food

7.5

Crew

8.5

Boarding

8.1

Reviews

1 / 16
6.0
Good

Christopher,Jun 2025

LAX - NAN

No attempt to make you comfortable. All they care about is how can they pack more people on the plane and how can they charge you for as much as possible. I find it invasive and discriminatory that you weigh my carryon (or any of my naggage frankly). If I physically weighed 15kilos more and my bag weighed under your stupid and arbitrary weight limit I would not be charged... but if I'm a person who is skinny and weighs less, well heaven forbid my bag is 1 kilo heavier than you wish!! $$$ VERY VERY DISCRIMINATORY POLICY!! NEXT TIME I'LL TRY TO EAT MY BAGGAGE SO THAT I CAN TAKE ON AS MUCH WEIGHT AS I WANT! Yeah... sounds ridiculous doesn't it!? No more ridiculous than you charging more for people who bring more baggage weight while letting obese people carry on all the weight they want! It just proves it has absolutely nothing to do with safety, or even your operating costs... Just squeezing as much money out of us as possible!!
American Airlines
7.2
Good
10,000 reviews
Fiji Airways
8.0
Very good
205 reviews

Comfort

8.0

Overall

8.0

Entertainment

7.4

Food

7.5

Crew

8.5

Boarding

8.1

Reviews

1 / 16
6.0
Good

Christopher,Jun 2025

LAX - NAN

No attempt to make you comfortable. All they care about is how can they pack more people on the plane and how can they charge you for as much as possible. I find it invasive and discriminatory that you weigh my carryon (or any of my naggage frankly). If I physically weighed 15kilos more and my bag weighed under your stupid and arbitrary weight limit I would not be charged... but if I'm a person who is skinny and weighs less, well heaven forbid my bag is 1 kilo heavier than you wish!! $$$ VERY VERY DISCRIMINATORY POLICY!! NEXT TIME I'LL TRY TO EAT MY BAGGAGE SO THAT I CAN TAKE ON AS MUCH WEIGHT AS I WANT! Yeah... sounds ridiculous doesn't it!? No more ridiculous than you charging more for people who bring more baggage weight while letting obese people carry on all the weight they want! It just proves it has absolutely nothing to do with safety, or even your operating costs... Just squeezing as much money out of us as possible!!

Related info for your journey

Find useful and relevant information for your journey from Austin to Sydney. 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 Sydney?

    There are many flights that can get you from Austin to Sydney in 20h 55m. Fly via United Airlines or Qantas Airways to get the fastest option. Airlines will cover a distance of 8469 mi. This flight may include one or multiple stops.

  • What are the cheapest airlines flying from Austin to Sydney round-trip?

    According to our current data, Delta ($469), Fiji Airways ($717), and American Airlines ($876) offers the cheapest pricing from Austin to Sydney. Users have found that Delta is 63% cheaper than the other options available to this destination.

  • Can I find deals for flights from Austin to Sydney that include hotel bookings?

    Yes. In addition to deals on Austin to Sydney flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Austin to Sydney?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Austin to Sydney.

  • Can I find deals for business class flights from Austin to Sydney?

    Yes. Cheapflights offers flight deals from Austin to Sydney 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 Sydney?

    Currently, March is the cheapest month in which you can book a flight from Austin to Sydney (average of $1,032). Flying from Austin to Sydney in December is currently the most expensive (average of $1,626). 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 Sydney?

Book flights to Sydney if you plan to visit one of these locations
Parramatta
Wollongong
Manly
Coogee

Browse thousands of different options on Cheapflights for your next trip

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Top 5 airlines flying from Austin to Sydney

Discover the top 5 airlines that operate flights from Austin to Sydney. 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 September 25, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$469Average$1,191FlexibilityNo cancel feeOn-timeN/A
Fiji AirwaysCheapest$717Average$1,203FlexibilityNo cancel feeOn-time74%
American AirlinesCheapest$876Average$1,488FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$909Average$1,260FlexibilityNo cancel feeOn-time69%
Qantas AirwaysCheapest$1,054Average$1,436FlexibilityNo cancel feeOn-time74%

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