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Cheap flights from Austin to Sydney from $772

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Austin to Sydney departing on 30/4. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Cheap return flights

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Air Canada Logo
11:30 - 08:35AUS-SYD
29h 05m2 stops
Air Canada Logo
10:20 - 21:27SYD-AUS
51h 07m2 stops
$1,302Air Canada
Find Deal
Mon, 9 Mar - Tue, 24 Mar
Multiple Airlines Logo
14:13 - 09:35AUS-SYD
26h 22m2 stops
Multiple Airlines Logo
11:20 - 21:27SYD-AUS
51h 07m2 stops
$1,310Multiple Airlines
Find Deal
Tue, 3 Feb - Tue, 17 Feb
Air Canada Logo
13:05 - 08:35AUS-SYD
50h 30m2 stops
Air Canada Logo
10:20 - 21:27SYD-AUS
51h 07m2 stops
$1,313Air Canada
Find Deal
Sat, 7 Mar - Tue, 17 Mar
Multiple Airlines Logo
14:13 - 09:35AUS-SYD
26h 22m2 stops
Multiple Airlines Logo
11:20 - 21:27SYD-AUS
51h 07m3 stops
$1,319Multiple Airlines
Find Deal
Tue, 3 Feb - Tue, 17 Feb
Qantas Airways Logo
18:25 - 09:00AUS-SYD
21h 35m1 stop
Qantas Airways Logo
17:45 - 23:17SYD-AUS
22h 32m1 stop
$1,408Qantas Airways
Find Deal
Mon, 2 Feb - Mon, 16 Feb
Qantas Airways Logo
19:10 - 09:00AUS-SYD
20h 50m1 stop
Qantas Airways Logo
11:20 - 23:17SYD-AUS
28h 57m1 stop
$1,428Qantas Airways
Find Deal
Mon, 9 Feb - Mon, 2 Mar
American Airlines Logo
15:00 - 09:00AUS-SYD
26h 00m1 stop
American Airlines Logo
11:20 - 19:23SYD-AUS
24h 03m1 stop
$1,456American Airlines
Find Deal
Wed, 11 Mar - Tue, 17 Mar
American Airlines Logo
18:06 - 09:00AUS-SYD
22h 54m2 stops
American Airlines Logo
11:20 - 19:23SYD-AUS
24h 03m1 stop
$1,462American Airlines
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Wed, 11 Mar - Tue, 17 Mar
United Airlines Logo
13:34 - 06:55AUS-SYD
26h 21m1 stop
United Airlines Logo
09:30 - 21:42SYD-AUS
27h 12m1 stop
$1,482United Airlines
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Sun, 5 Apr - Mon, 13 Apr
United Airlines Logo
19:59 - 08:00AUS-SYD
20h 01m1 stop
United Airlines Logo
09:30 - 15:24SYD-AUS
20h 54m2 stops
$1,488United Airlines
Find Deal
Tue, 31 Mar - Wed, 15 Apr

Air Canada flights from Austin to Sydney

Our best Air Canada deals on Austin to Sydney flight tickets
Air Canada
9 Mar
AUS11:30Austin Bergstrom
29h 05m
2 stops
SYD08:35Sydney Kingsford Smith
24 Mar
SYD10:20Sydney Kingsford Smith
51h 07m
2 stops
AUS21:27Austin Bergstrom
$1,302
Find similar
Air Canada
7 Mar
AUS13:05Austin Bergstrom
50h 30m
2 stops
SYD08:35Sydney Kingsford Smith
17 Mar
SYD10:20Sydney Kingsford Smith
51h 07m
2 stops
AUS21:27Austin Bergstrom
$1,313
Find similar
Air Canada
7 Mar
AUS13:05Austin Bergstrom
50h 30m
2 stops
SYD08:35Sydney Kingsford Smith
17 Mar
SYD10:20Sydney Kingsford Smith
41h 59m
2 stops
AUS12:19Austin Bergstrom
$1,322
Find similar

Qantas Airways flights from Austin to Sydney

Our best Qantas Airways deals on Austin to Sydney flight tickets
Qantas Airways
2 Feb
AUS18:25Austin Bergstrom
21h 35m
1 stop
SYD09:00Sydney Kingsford Smith
16 Feb
SYD17:45Sydney Kingsford Smith
22h 32m
1 stop
AUS23:17Austin Bergstrom
$1,408
Find similar
Qantas Airways
9 Feb
AUS19:10Austin Bergstrom
20h 50m
1 stop
SYD09:00Sydney Kingsford Smith
2 Mar
SYD11:20Sydney Kingsford Smith
28h 57m
1 stop
AUS23:17Austin Bergstrom
$1,428
Find similar
Qantas Airways
30 Jan
AUS18:25Austin Bergstrom
21h 35m
1 stop
SYD09:00Sydney Kingsford Smith
15 Feb
SYD17:45Sydney Kingsford Smith
22h 32m
1 stop
AUS23:17Austin Bergstrom
$1,454
Find similar

momondo 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, momondo users made 78,305 searches. Data last updated 9 November 2025.
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

AustinSydney

AUS - SYD

AUSSYD

Austin Bergstrom

Mon 9/3

11:30-08:35

2 stops29h 05m

Sydney Kingsford Smith

Tue 24/3

10:20-21:27

2 stops51h 07m

$1,302

AustinSydney

AUS - SYD

AUSSYD

Austin Bergstrom

Tue 3/2

14:13-09:35

2 stops26h 22m

Sydney Kingsford Smith

Tue 17/2

11:20-21:27

2 stops51h 07m

$1,310

AustinSydney

AUS - SYD

AUSSYD

Austin Bergstrom

Sat 7/3

13:05-08:35

2 stops50h 30m

Sydney Kingsford Smith

Tue 17/3

10:20-21:27

2 stops51h 07m

$1,313

AustinSydney

AUS - SYD

AUSSYD

Austin Bergstrom

Tue 3/2

14:13-09:35

2 stops26h 22m

Sydney Kingsford Smith

Tue 17/2

11:20-21:27

3 stops51h 07m

$1,319

AustinSydney

AUS - SYD

AUSSYD

Austin Bergstrom

Mon 2/2

18:25-09:00

1 stop21h 35m

Sydney Kingsford Smith

Mon 16/2

17:45-23:17

1 stop22h 32m

$1,408

AustinSydney

AUS - SYD

AUSSYD

Austin Bergstrom

Mon 9/2

19:10-09:00

1 stop20h 50m

Sydney Kingsford Smith

Mon 2/3

11:20-23:17

1 stop28h 57m

$1,428

AustinSydney

AUS - SYD

AUSSYD

Austin Bergstrom

Wed 11/3

15:00-09:00

1 stop26h 00m

Sydney Kingsford Smith

Tue 17/3

11:20-19:23

1 stop24h 03m

$1,456

AustinSydney

AUS - SYD

AUSSYD

Austin Bergstrom

Wed 11/3

18:06-09:00

2 stops22h 54m

Sydney Kingsford Smith

Tue 17/3

11:20-19:23

1 stop24h 03m

$1,462

AustinSydney

AUS - SYD

AUSSYD

Austin Bergstrom

Sun 5/4

13:34-06:55

1 stop26h 21m

Sydney Kingsford Smith

Mon 13/4

09:30-21:42

1 stop27h 12m

$1,482

AustinSydney

AUS - SYD

AUSSYD

Austin Bergstrom

Tue 31/3

19:59-08:00

1 stop20h 01m

Sydney Kingsford Smith

Wed 15/4

09:30-15:24

2 stops20h 54m

$1,488

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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How to get the cheapest flight ticket from Austin to Sydney

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Sydney?

The month of May is, on average, the cheapest month to fly to Sydney from Austin, with most prices found around $1,528. If you aren’t able to travel to Sydney during the month of May, then flying in April is also cheap. Prices for this month can be found on momondo for an average of $1,567.

What is the cheapest day to depart on your flight to Sydney?

Our data shows that Friday is the least expensive day to fly to Sydney. Tickets to fly out on this day can be as low as $350. The most expensive day to fly to Sydney is Tuesday, with ticket prices averaging around $620.

What is the cheapest time of day to depart on your flight to Sydney?

According to our data, the cheapest time of day to fly to Sydney is in the evening. momondo users have found flights departing from Austin to Sydney in the evening for as low as $312. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. If you have a flexible travel schedule, then try to avoid flying in the morning when prices are $582 on average. Flights to Sydney from Austin in the morning are generally more expensive because this time of day is more convenient for travellers’ schedules.

How far in advance should I book a flight to Sydney?

You are more likely to see cheaper flights to Sydney from Austin when booking weeks ahead of your departure date. In general, you can expect to find flights to Sydney for around $1,860 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Sydney from Austin for as low as $1,665 on momondo.

Can stopping save me money on Austin to Sydney flights?

You could potentially save up to 35% on your flight if you consider stops on a Austin to Sydney flight.

How have Austin to Sydney flight prices changed over time?

As of November 2025, prices for Austin to Sydney flights are approximately 44% cheaper when compared to flights at the same time last year.

When to book flights from Austin to Sydney

Are you open to changing your travel dates? Check out the ideal times to fly from Austin to Sydney according to our flight data. Find out which month and days have the cheapest flights.
Estimated return price

Cheap Austin to Sydney (AUS to SYD) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Austin to Sydney

Direct flights

None
There are no direct flights from Austin to Sydney. There are no popular flight routes from Austin to Sydney.
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  • How far is Austin Bergstrom to Sydney Kingsford Smith by plane?

    A flight from Austin Bergstrom to Sydney Kingsford Smith will travel around 13621.3 km. Flights usually cover this in 19h 45m, depending on flying conditions and air traffic around both airports.

  • When did momondo last update prices for flights from Austin Bergstrom Airport to Sydney Kingsford Smith Airport?

    Prices for flights from Austin Bergstrom Airport to Sydney Kingsford Smith Airport were last updated today.

  • How old do you have to be to fly from Austin Bergstrom Airport to Sydney Kingsford Smith Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Austin Bergstrom Airport to Sydney Kingsford Smith Airport.

  • What documentation or ID do you need to fly to Sydney Kingsford Smith Airport?

    The travel and health documents required for your trip to Sydney Kingsford Smith Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s licence, and a passport valid for six-months after you plan to arrive at Sydney Kingsford Smith Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Travelling to a place near Sydney?

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

Why use momondo?

Why should I use momondo to find a flight deal from Austin to Sydney?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Austin to Sydney. momondo saves you time and could save you money on your trip.

Can I find flights from Austin to Sydney with flexible booking policies on momondo?

Yes. All flights to Sydney from Austin on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Austin to Sydney?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Sydney from Austin.

I’m not ready to book a flight from Austin to Sydney right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of Austin to Sydney flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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