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Cheap flights from Austin to Sydney from $644

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 12/11. Fares are subject to change and may not be available on all flights or dates of travel.
AUS — SYD
28 Nov — 5 Dec1
1 adult
1 adult, Economy, 0 bags

Cheapflights Tip: The best prices from Austin Bergstrom to Sydney Kingsford Smith are usually found in May or September, booked 72 days in advance, depart on a Friday or Saturday and return on a Saturday

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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 29 October 2025.

Tue 25/1114:28AUS - SYD
1 stop25h 32mQantas Airways
Tue 2/1217:45SYD - AUS
1 stop22h 13mQantas Airways
Deal found 26/10$1,280
Thu 30/1020:55AUS - SYD
1 stop20h 05mQantas Airways
Tue 11/1111:20SYD - AUS
1 stop25h 14mQantas Airways
Deal found 26/10$1,285
Mon 27/1020:55AUS - SYD
1 stop20h 05mQantas Airways
Mon 3/1111:20SYD - AUS
1 stop25h 03mQantas Airways
Deal found 26/10$1,297
Sun 2/1115:11AUS - SYD
2 stops24h 54mUnited Airlines
Sun 16/1112:10SYD - AUS
2 stops21h 51mUnited Airlines
Deal found 27/10$1,300
Mon 1/1217:49AUS - SYD
1 stop22h 26mUnited Airlines
Mon 8/1212:10SYD - AUS
1 stop28h 49mUnited Airlines
Deal found 27/10$1,311
Mon 10/1115:10AUS - SYD
1 stop25h 05mUnited Airlines
Fri 21/1111:50SYD - AUS
1 stop18h 24mUnited Airlines
Deal found 27/10$1,315
Tue 25/1114:16AUS - SYD
2 stops25h 49mUnited Airlines
Tue 2/1211:50SYD - AUS
1 stop20h 32mUnited Airlines
Deal found 26/10$1,317
Mon 29/1219:25AUS - SYD
1 stop42h 35mUnited Airlines
Sun 1/211:50SYD - AUS
1 stop18h 19mUnited Airlines
Deal found 25/10$1,319
Thu 13/1114:16AUS - SYD
1 stop23h 44mUnited Airlines
Thu 20/1111:20SYD - AUS
1 stop27h 33mUnited Airlines
Deal found 27/10$1,320
Mon 29/1219:25AUS - SYD
1 stop42h 35mUnited Airlines
Thu 29/112:10SYD - AUS
1 stop21h 43mUnited Airlines
Deal found 25/10$1,323

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 29 October 2025.

Round-trip from

$1,280

One-way from

$644

Popular in

December

Cheapest in

May

Average price

$1,970
Qantas Airways
  • Qantas Airways
  • 9/3-24/3
  • 2 total stops
  • 41h 48m total
  • Austin to Sydney
Search Deals
Qantas Airways
  • Qantas Airways
  • 12/11
  • 1 total stop
  • 22h 00m total
  • Austin to Sydney
Search Deals
Highest demand for flights based on searches. 15% potential increase in price ($530 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($88 potential savings vs. average return price).
Search Deals
Average for round-trip flights in October 2025
Search Deals

Cheapflights Fare Finder

 
Customise 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 647,157 searches. Data last updated 29 October 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

Wed 15/4

16:32-07:00

1 stop23h 28m

Sydney Kingsford Smith

Mon 27/4

10:20-23:53

1 stop28h 33m

$1,311

AustinSydney

AUS - SYD

AUSSYD

Austin Bergstrom

Tue 10/2

17:55-07:00

1 stop20h 05m

Sydney Kingsford Smith

Tue 24/2

11:20-14:35

1 stop20h 15m

$1,311

AustinSydney

AUS - SYD

AUSSYD

Austin Bergstrom

Sat 7/3

17:58-09:15

1 stop22h 17m

Sydney Kingsford Smith

Tue 17/3

14:00-22:20

1 stop24h 20m

$1,315

AustinSydney

AUS - SYD

AUSSYD

Austin Bergstrom

Fri 10/4

16:32-07:00

1 stop23h 28m

Sydney Kingsford Smith

Thu 30/4

09:30-15:41

1 stop21h 11m

$1,320

AustinSydney

AUS - SYD

AUSSYD

Austin Bergstrom

Thu 13/11

14:16-07:00

1 stop23h 44m

Sydney Kingsford Smith

Thu 20/11

11:20-21:53

1 stop27h 33m

$1,320

AustinSydney

AUS - SYD

AUSSYD

Austin Bergstrom

Wed 11/3

16:18-07:00

1 stop22h 42m

Sydney Kingsford Smith

Tue 17/3

14:00-18:33

1 stop20h 33m

$1,466

AustinSydney

AUS - SYD

AUSSYD

Austin Bergstrom

Mon 3/11

16:18-09:05

2 stops23h 47m

$840

AustinSydney

AUS - SYD

AUSSYD

Austin Bergstrom

Sat 3/1

19:00-22:05

2 stops34h 05m

$1,174

AustinSydney

AUS - SYD

AUSSYD

Austin Bergstrom

Sat 3/1

14:00-09:00

1 stop26h 00m

$1,658

AustinSydney

AUS - SYD

AUSSYD

Austin Bergstrom

Sat 3/1

14:00-09:00

1 stop26h 00m

$1,745

Flights are sorted by cheapest return flights first.

Deals found on 28/10

Showing 1-10 of 11 results
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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 return 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 return flight from Austin to Sydney. Price data was last updated on 24 October 2025.

To ensure you get the cheapest price possible for a flight from Austin to Sydney, you should look to book at least 72 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

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

Currently, May is the cheapest month in which you can book a flight from Austin to Sydney (average of $878). Flying from Austin to Sydney in December is currently the most expensive (average of $1,673). 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 29 October 2025.

It’s typically best to fly out from Austin to Sydney in the evening. Doing so could potentially save you 46% on the flight price compared to flying in the morning, 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 return from Austin to Sydney. Price data was last updated on 30 March 2025.

Travellers seeking maximum savings on their Austin to Sydney flight should consider departing on Saturday evenings when fares are most often at their lowest. Monday at midday flights should be avoided if possible as fares are typically the most expensive at this time.

How much does it cost for a return flight from Austin to Sydney?

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?

    Airlines like United Airlines fly from Austin to Sydney in about 23h 28m. The time it takes to get you to your destination can typically vary by up to . Airlines will cover a distance of 13630 km.

  • What are the cheapest airlines to fly from Austin to Sydney one-way?

    For one-way options, check prices for United Airlines. According to our data, you can fly for as low as $840. Users have also found prices from $1,174 and $1,658 on Fiji Airways and Qantas Airways, respectively.

  • 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 holiday 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, May is the cheapest month in which you can book a flight from Austin to Sydney (average of $878). Flying from Austin to Sydney in December is currently the most expensive (average of $1,673). 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

Travelling to a place near Sydney?

Book flights to Sydney if you plan to visit one of these locations
Parramatta
Wollongong
Katoomba
Penrith
Manly
Terrigal
Randwick
Lithgow
Coogee
Leura
Bondi Beach
Cronulla

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Can Cheapflights notify me if prices for flights from Austin to Sydney become cheaper?

Yes, Cheapflights offers price alerts on Austin to Sydney flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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