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Cheap flights from Austin to Sydney from $604

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 4/12. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult

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Qantas Airways Logo
14:28 - 09:00AUS-SYD
25h 32m1 stop
Qantas Airways Logo
11:20 - 23:06SYD-AUS
28h 46m1 stop
$1,296Qantas Airways
Find Deal
Mon, 1 Dec - Mon, 22 Dec
Qantas Airways Logo
14:08 - 07:25AUS-SYD
24h 17m1 stop
Qantas Airways Logo
11:20 - 22:58SYD-AUS
28h 38m1 stop
$1,301Qantas Airways
Find Deal
Mon, 17 Nov - Sat, 22 Nov
United Airlines Logo
19:37 - 07:00AUS-SYD
42h 23m1 stop
United Airlines Logo
11:50 - 17:23SYD-AUS
22h 33m1 stop
$1,316United Airlines
Find Deal
Fri, 30 Jan - Sun, 15 Feb
United Airlines Logo
19:37 - 07:00AUS-SYD
42h 23m1 stop
United Airlines Logo
14:00 - 18:34SYD-AUS
21h 34m1 stop
$1,318United Airlines
Find Deal
Fri, 30 Jan - Sun, 15 Feb
Air Canada Logo
13:05 - 08:35AUS-SYD
50h 30m2 stops
Air Canada Logo
10:20 - 12:19SYD-AUS
41h 59m2 stops
$1,322Air Canada
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Sat, 7 Mar - Tue, 17 Mar
Air Canada Logo
14:16 - 09:35AUS-SYD
26h 19m2 stops
Air Canada Logo
11:20 - 19:52SYD-AUS
25h 32m2 stops
$1,384Air Canada
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Sun, 30 Nov - Thu, 11 Dec
Multiple Airlines Logo
16:14 - 06:10AUS-SYD
20h 56m1 stop
Multiple Airlines Logo
17:45 - 19:23SYD-AUS
18h 38m1 stop
$1,472Multiple Airlines
Find Deal
Tue, 18 Nov - Sat, 6 Dec
American Airlines Logo
17:23 - 09:00AUS-SYD
23h 37m1 stop
American Airlines Logo
11:20 - 16:29SYD-AUS
21h 09m2 stops
$1,493American Airlines
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Wed, 11 Mar - Tue, 17 Mar
American Airlines Logo
20:15 - 09:00AUS-SYD
19h 45m1 stop
American Airlines Logo
11:20 - 19:13SYD-AUS
24h 53m1 stop
$1,521American Airlines
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Mon, 17 Nov - Sat, 22 Nov
Multiple Airlines Logo
14:13 - 09:35AUS-SYD
26h 22m2 stops
Multiple Airlines Logo
11:20 - 21:27SYD-AUS
51h 07m3 stops
$1,549Multiple Airlines
Find Deal
Sat, 7 Feb - Sat, 21 Feb

United Airlines flights from Austin to Sydney

Our best United Airlines deals on Austin to Sydney flight tickets
United Airlines
26 Oct
AUS18:17Austin Bergstrom
22h 48m
2 stops
SYD09:05Sydney Kingsford Smith
9 Nov
SYD12:10Sydney Kingsford Smith
21h 51m
2 stops
AUS17:01Austin Bergstrom
$1,309
Find similar
United Airlines
26 Oct
AUS15:10Austin Bergstrom
25h 55m
2 stops
SYD09:05Sydney Kingsford Smith
9 Nov
SYD11:20Sydney Kingsford Smith
21h 02m
2 stops
AUS15:22Austin Bergstrom
$1,310
Find similar
United Airlines
30 Jan
AUS19:37Austin Bergstrom
42h 23m
1 stop
SYD07:00Sydney Kingsford Smith
15 Feb
SYD11:50Sydney Kingsford Smith
22h 33m
1 stop
AUS17:23Austin Bergstrom
$1,316
Find similar

Qantas Airways flights from Austin to Sydney

Our best Qantas Airways deals on Austin to Sydney flight tickets
Qantas Airways
1 Dec
AUS14:28Austin Bergstrom
25h 32m
1 stop
SYD09:00Sydney Kingsford Smith
22 Dec
SYD11:20Sydney Kingsford Smith
28h 46m
1 stop
AUS23:06Austin Bergstrom
$1,296
Find similar
Qantas Airways
17 Nov
AUS14:08Austin Bergstrom
24h 17m
1 stop
SYD07:25Sydney Kingsford Smith
22 Nov
SYD11:20Sydney Kingsford Smith
28h 38m
1 stop
AUS22:58Austin Bergstrom
$1,301
Find similar
Qantas Airways
25 Oct
AUS13:54Austin Bergstrom
25h 36m
1 stop
SYD07:30Sydney Kingsford Smith
9 Nov
SYD11:20Sydney Kingsford Smith
25h 03m
1 stop
AUS19:23Austin Bergstrom
$1,316
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 22 October 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 1/12

14:28-09:00

1 stop25h 32m

Sydney Kingsford Smith

Mon 22/12

11:20-23:06

1 stop28h 46m

$1,296

AustinSydney

AUS - SYD

AUSSYD

Austin Bergstrom

Mon 17/11

14:08-07:25

1 stop24h 17m

Sydney Kingsford Smith

Sat 22/11

11:20-22:58

1 stop28h 38m

$1,301

AustinSydney

AUS - SYD

AUSSYD

Austin Bergstrom

Fri 30/1

19:37-07:00

1 stop42h 23m

Sydney Kingsford Smith

Sun 15/2

11:50-17:23

1 stop22h 33m

$1,316

AustinSydney

AUS - SYD

AUSSYD

Austin Bergstrom

Fri 30/1

19:37-07:00

1 stop42h 23m

Sydney Kingsford Smith

Sun 15/2

14:00-18:34

1 stop21h 34m

$1,318

AustinSydney

AUS - SYD

AUSSYD

Austin Bergstrom

Sat 7/3

13:05-08:35

2 stops50h 30m

Sydney Kingsford Smith

Tue 17/3

10:20-12:19

2 stops41h 59m

$1,322

AustinSydney

AUS - SYD

AUSSYD

Austin Bergstrom

Sun 30/11

14:16-09:35

2 stops26h 19m

Sydney Kingsford Smith

Thu 11/12

11:20-19:52

2 stops25h 32m

$1,384

AustinSydney

AUS - SYD

AUSSYD

Austin Bergstrom

Tue 18/11

16:14-06:10

1 stop20h 56m

Sydney Kingsford Smith

Sat 6/12

17:45-19:23

1 stop18h 38m

$1,472

AustinSydney

AUS - SYD

AUSSYD

Austin Bergstrom

Wed 11/3

17:23-09:00

1 stop23h 37m

Sydney Kingsford Smith

Tue 17/3

11:20-16:29

2 stops21h 09m

$1,493

AustinSydney

AUS - SYD

AUSSYD

Austin Bergstrom

Mon 17/11

20:15-09:00

1 stop19h 45m

Sydney Kingsford Smith

Sat 22/11

11:20-19:13

1 stop24h 53m

$1,521

AustinSydney

AUS - SYD

AUSSYD

Austin Bergstrom

Sat 7/2

14:13-09:35

2 stops26h 22m

Sydney Kingsford Smith

Sat 21/2

11:20-21:27

3 stops51h 07m

$1,549

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 typical price of a round-trip flight between Austin and Sydney?

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 $1,543. If you aren’t able to travel to Sydney during the month of May, then flying in September is also cheap. Prices for this month can be found on momondo for an average of $1,661.

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 $583 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 $1,932 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 $1,794 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 October 2025, prices for Austin to Sydney flights are approximately 39% 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
Randwick
Cronulla
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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