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Cheap flights from Austin to Sydney from $775

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 15/5. Fares are subject to change and may not be available on all flights or dates of travel.
AUS — SYD
24 May — 31 May1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Austin to Sydney

Enter your travel dates to find the best prices.

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 24 April 2026.

Tue 6/1013:44
AUS
-
SYD
1 stop26h 21m
Qantas Airways
Sat 31/1017:50
SYD
-
AUS
2 stops34h 25m
Qantas Airways
Deal found 22/4$1,601
Sun 26/416:25
AUS
-
SYD
1 stop23h 25m
Delta
Sun 10/509:15
SYD
-
AUS
1 stop26h 31m
Delta
Deal found 23/4$1,742
Wed 20/516:45
AUS
-
SYD
2 stops23h 15m
United Airlines
Wed 27/510:20
SYD
-
AUS
2 stops22h 07m
United Airlines
Deal found 23/4$1,748
Fri 26/606:30
AUS
-
SYD
3 stops38h 20m
Multiple Airlines
Sun 12/713:15
SYD
-
AUS
3 stops45h 15m
Multiple Airlines
Deal found 19/4$1,751
Sat 6/616:10
AUS
-
SYD
2 stops47h 50m
United Airlines
Wed 15/710:20
SYD
-
AUS
2 stops21h 38m
United Airlines
Deal found 23/4$1,769
Mon 8/616:15
AUS
-
SYD
1 stop23h 35m
Delta
Mon 7/909:15
SYD
-
AUS
1 stop26h 47m
Delta
Deal found 22/4$1,788
Wed 3/616:10
AUS
-
SYD
2 stops23h 50m
United Airlines
Sat 1/810:20
SYD
-
AUS
1 stop19h 19m
United Airlines
Deal found 24/4$1,809
Sun 26/418:00
AUS
-
SYD
1 stop21h 55m
United Airlines
Sun 10/509:30
SYD
-
AUS
1 stop27h 05m
United Airlines
Deal found 22/4$1,812
Sun 2/818:04
AUS
-
SYD
2 stops21h 56m
United Airlines
Thu 20/809:30
SYD
-
AUS
2 stops20h 57m
United Airlines
Deal found 24/4$1,815
Fri 1/514:00
AUS
-
SYD
2 stops25h 50m
Delta
Sun 10/509:15
SYD
-
AUS
1 stop20h 55m
Delta
Deal found 23/4$1,816

Find 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 24 April 2026.

Round-trip from

$1,601

One-way from

$775

Popular in

December

Cheapest in

August

Average price

$2,057
Qantas Airways
  • Qantas Airways
  • 6/10-31/10
  • 3 total stops
  • 60h 46m total
  • Austin to Sydney
Search Deals
15/5
  • 15/5
  • 3 total stops
  • 46h 08m total
  • Austin to Sydney
Search Deals
High demand for flights, 0% potential price rise
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($40 potential savings vs. average return price).
Search Deals
Average for round-trip flights in April 2026
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 24 April 2026.
Use the filters below to find and compare flights from Austin to Sydney that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

AustinSydney

AUS - SYD

AUSSYD

Austin Bergstrom

Sat 6/6

16:10-07:00

2 stops47h 50m

Sydney Kingsford Smith

Wed 15/7

10:20-16:58

2 stops21h 38m

$1,769

AustinSydney

AUS - SYD

AUSSYD

Austin Bergstrom

Mon 8/6

16:15-06:50

1 stop23h 35m

Sydney Kingsford Smith

Mon 7/9

09:15-21:02

1 stop26h 47m

$1,788
Fastest return journey

AustinSydney

AUS - SYD

AUSSYD

Austin Bergstrom

Mon 8/6

18:04-07:00

2 stops21h 56m

Sydney Kingsford Smith

Fri 10/7

09:30-13:29

1 stop18h 59m

$1,809

AustinSydney

AUS - SYD

AUSSYD

Austin Bergstrom

Wed 27/5

20:01-06:55

1 stop19h 54m

Sydney Kingsford Smith

Tue 9/6

10:20-19:05

1 stop23h 45m

$1,825

AustinSydney

AUS - SYD

AUSSYD

Austin Bergstrom

Tue 2/6

18:04-07:00

2 stops21h 56m

Sydney Kingsford Smith

Tue 9/6

10:20-17:02

2 stops21h 42m

$1,832

AustinSydney

AUS - SYD

AUSSYD

Austin Bergstrom

Sun 2/8

16:15-06:50

1 stop23h 35m

Sydney Kingsford Smith

Thu 20/8

09:15-15:43

1 stop21h 28m

$1,974

AustinSydney

AUS - SYD

AUSSYD

Austin Bergstrom

Sun 2/8

18:04-07:00

2 stops21h 56m

Sydney Kingsford Smith

Thu 20/8

10:20-19:56

2 stops24h 36m

$1,980

AustinSydney

AUS - SYD

AUSSYD

Austin Bergstrom

Wed 26/8

19:35-06:50

1 stop20h 15m

Sydney Kingsford Smith

Wed 9/9

09:15-15:43

1 stop21h 28m

$2,030
Cheapest one-way

AustinSydney

AUS - SYD

AUSSYD

Austin Bergstrom

Tue 4/8

20:15-11:50

3 stops48h 35m

$798

AustinSydney

AUS - SYD

AUSSYD

Austin Bergstrom

Wed 6/5

21:13-22:10

3 stops57h 57m

$807

Flights are sorted by cheapest return flights first.

Deals found on 19/4

Showing 1-10 of 19 resultsSorted by cheapest first
1
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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?

To ensure you get the cheapest price possible for a flight from Austin to Sydney, you should look to book at least 71 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, August is the cheapest month in which you can book a flight from Austin to Sydney (average of $1,404). Flying from Austin to Sydney in December is currently the most expensive (average of $2,114). 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.

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 and Delta fly from Austin to Sydney in about 23h 35m. The time it takes to get you to your destination can typically vary by up to 24h 15m. Airlines will cover a distance of 13630 km. This flight may include one or multiple stops.

  • 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, August is the cheapest month in which you can book a flight from Austin to Sydney (average of $1,404). Flying from Austin to Sydney in December is currently the most expensive (average of $2,114). 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
Penrith
Katoomba
Terrigal
Lithgow
Cronulla
Manly
Bondi Beach
Leura
Randwick
Coogee

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Why should you use Cheapflights to find cheap flight tickets from Austin to Sydney?

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Austin to Sydney.

Can Cheapflights find flights from Austin to Sydney with no change fees?

Cheapflights does show flights with no change fees to all users. To see these options for flights from Austin to Sydney, users can toggle the no change fees filter when performing a flight search.

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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