Find flights
When to book
FAQs

Cheap flights from Austin to Sydney from $830

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 25/10. Fares are subject to change and may not be available on all flights or dates of travel.
AUS — SYD
17 Oct — 24 Oct1
1 adult
1 adult, Economy

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 Friday or Saturday and return on a Saturday

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 17 September 2025.

Round-trip from

$1,612

One-way from

$830

Popular in

December

Cheapest in

May

Average price

$1,894
Fiji Airways
  • Fiji Airways
  • 30/10-6/11
  • 4 total stops
  • 46h 19m total
  • Austin to Sydney
Search Deals
25/10
  • 25/10
  • 3 total stops
  • 45h 42m total
  • Austin to Sydney
Search Deals
Highest demand for flights based on searches. 17% potential increase in price ($605 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($103 potential savings vs. average return price).
Search Deals
Average for round-trip flights in September 2025
Search Deals

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 17 September 2025.

Thu 30/1020:37AUS - SYD
2 stops24h 23mFiji Airways
Thu 6/1114:00SYD - AUS
2 stops21h 56mFiji Airways
Deal found 15/9$1,612
Mon 10/1117:00AUS - SYD
1 stop20h 55mQantas Airways
Fri 21/1106:30SYD - AUS
2 stops23h 23mQantas Airways
Deal found 15/9$1,647
Wed 10/1218:10AUS - SYD
1 stop19h 45mQantas Airways
Fri 9/107:05SYD - AUS
2 stops21h 31mQantas Airways
Deal found 17/9$1,648
Wed 17/915:26AUS - SYD
1 stop24h 34mUnited Airlines
Wed 1/1010:20SYD - AUS
1 stop21h 11mUnited Airlines
Deal found 15/9$1,668
Sat 20/918:06AUS - SYD
1 stop21h 49mQantas Airways
Mon 22/912:10SYD - AUS
1 stop21h 36mQantas Airways
Deal found 16/9$1,672
Wed 17/913:28AUS - SYD
2 stops26h 07mDelta
Wed 1/1009:25SYD - AUS
2 stops26h 35mDelta
Deal found 15/9$1,674
Sun 14/1217:00AUS - SYD
1 stop20h 55mQantas Airways
Sun 11/121:55SYD - AUS
2 stops34h 55mQantas Airways
Deal found 15/9$1,677
Thu 16/1019:47AUS - SYD
2 stops31h 58mAlaska Airlines
Tue 28/1021:40SYD - AUS
2 stops36h 38mAlaska Airlines
Deal found 16/9$1,690
Sat 8/1114:32AUS - SYD
2 stops25h 48mQantas Airways
Wed 26/1114:05SYD - AUS
1 stop19h 47mQantas Airways
Deal found 16/9$1,711
Thu 16/1019:47AUS - SYD
2 stops31h 58mAlaska Airlines
Fri 24/1021:40SYD - AUS
2 stops33h 30mAlaska Airlines
Deal found 16/9$1,732
Fri 17/1013:31AUS - SYD
2 stops38h 14mAlaska Airlines
Tue 28/1021:40SYD - AUS
2 stops33h 34mAlaska Airlines
Deal found 16/9$1,734
Sat 8/1119:04AUS - SYD
2 stops33h 46mFiji Airways
Tue 25/1114:10SYD - AUS
2 stops21h 46mFiji Airways
Deal found 16/9$1,735

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 17 September 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

Sat 7/2

19:02-12:30

2 stops24h 28m

Sydney Kingsford Smith

Sat 21/2

14:10-18:09

2 stops20h 59m

$1,738

AustinSydney

AUS - SYD

AUSSYD

Austin Bergstrom

Fri 17/10

07:15-19:45

2 stops44h 30m

Sydney Kingsford Smith

Fri 24/10

21:40-23:56

2 stops42h 16m

$1,755

AustinSydney

AUS - SYD

AUSSYD

Austin Bergstrom

Thu 16/10

19:47-19:45

2 stops31h 58m

Sydney Kingsford Smith

Thu 23/10

21:40-23:56

2 stops42h 16m

$1,759

AustinSydney

AUS - SYD

AUSSYD

Austin Bergstrom

Thu 16/10

19:47-19:45

2 stops31h 58m

Sydney Kingsford Smith

Sun 26/10

21:40-15:14

2 stops33h 34m

$1,759

AustinSydney

AUS - SYD

AUSSYD

Austin Bergstrom

Mon 13/10

16:15-07:35

1 stop23h 20m

Sydney Kingsford Smith

Wed 22/10

10:25-21:21

1 stop26h 56m

$1,892

AustinSydney

AUS - SYD

AUSSYD

Austin Bergstrom

Sat 1/11

17:49-09:15

1 stop23h 26m

Sydney Kingsford Smith

Sat 15/11

11:50-19:53

1 stop25h 03m

$1,892

AustinSydney

AUS - SYD

AUSSYD

Austin Bergstrom

Fri 17/10

13:59-07:35

1 stop25h 36m

Sydney Kingsford Smith

Tue 28/10

09:40-15:10

1 stop21h 30m

$1,892

AustinSydney

AUS - SYD

AUSSYD

Austin Bergstrom

Thu 30/10

19:43-07:00

1 stop19h 17m

Sydney Kingsford Smith

Thu 6/11

12:10-18:39

1 stop23h 29m

$1,892

AustinSydney

AUS - SYD

AUSSYD

Austin Bergstrom

Mon 13/10

16:15-07:35

1 stop23h 20m

Sydney Kingsford Smith

Tue 28/10

09:40-21:21

1 stop27h 41m

$1,892

AustinSydney

AUS - SYD

AUSSYD

Austin Bergstrom

Tue 14/10

16:15-07:35

1 stop23h 20m

Sydney Kingsford Smith

Mon 27/10

09:40-15:10

1 stop21h 30m

$1,892

Flights are sorted by cheapest return flights first.

Deals found on 15/9

Showing 1-10 of 22 results
1
2
3

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 12 September 2025.

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, May is the cheapest month in which you can book a flight from Austin to Sydney (average of $129). Flying from Austin to Sydney in October is currently the most expensive (average of $171). 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 17 September 2025.

It’s typically best to fly out from Austin to Sydney in the evening. Doing so could potentially save you 47% 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 Alaska Airlines and Delta fly from Austin to Sydney in about 23h 20m. The time it takes to get you to your destination can typically vary by up to 21h 10m. 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, May is the cheapest month in which you can book a flight from Austin to Sydney (average of $129). Flying from Austin to Sydney in October is currently the most expensive (average of $171). 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
Lithgow
Randwick
Bondi Beach
Coogee
Cronulla
Leura

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Austin to Sydney?

Cheapflights makes it easy to find Austin to Sydney flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

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.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.