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Cheap flights from Austin to Sydney from $757

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 23/9. 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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Find the cheapest flights from Austin to Sydney (AUS-SYD)

Cheap return flights

Air Canada Logo
10:00 - 07:20AUS-SYD
30h 20m2 stops
Air Canada Logo
09:20 - 20:11SYD-AUS
25h 51m1 stop
$1,572Air Canada
Find Deal
Wed, 17 Sep - Wed, 24 Sep
Air Canada Logo
10:00 - 07:20AUS-SYD
30h 20m2 stops
Air Canada Logo
09:20 - 19:55SYD-AUS
49h 35m2 stops
$1,574Air Canada
Find Deal
Wed, 17 Sep - Wed, 24 Sep
Air Canada Logo
10:00 - 07:20AUS-SYD
30h 20m2 stops
Air Canada Logo
09:20 - 19:55SYD-AUS
49h 35m3 stops
$1,584Air Canada
Find Deal
Wed, 17 Sep - Wed, 24 Sep
Qantas Airways Logo
18:12 - 06:55AUS-SYD
21h 43m1 stop
Qantas Airways Logo
12:10 - 20:22SYD-AUS
23h 12m1 stop
$1,640Qantas Airways
Find Deal
Wed, 24 Sep - Wed, 1 Oct
Qantas Airways Logo
16:54 - 06:55AUS-SYD
23h 01m1 stop
Qantas Airways Logo
12:10 - 20:22SYD-AUS
23h 12m1 stop
$1,655Qantas Airways
Find Deal
Wed, 17 Sep - Wed, 24 Sep
Fiji Airways Logo
13:00 - 12:30AUS-SYD
30h 30m2 stops
Fiji Airways Logo
06:00 - 20:38SYD-AUS
31h 38m2 stops
$1,663Fiji Airways
Find Deal
Wed, 4 Feb - Wed, 11 Feb
Delta Logo
16:00 - 06:35AUS-SYD
23h 35m1 stop
Delta Logo
09:25 - 15:44SYD-AUS
21h 19m1 stop
$1,712Delta
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Sun, 7 Sep - Sun, 14 Sep
United Airlines Logo
16:20 - 07:00AUS-SYD
23h 40m2 stops
United Airlines Logo
10:20 - 17:30SYD-AUS
22h 10m2 stops
$1,717United Airlines
Find Deal
Wed, 24 Sep - Wed, 1 Oct
Delta Logo
12:40 - 06:35AUS-SYD
26h 55m2 stops
Delta Logo
09:25 - 21:00SYD-AUS
26h 35m2 stops
$1,719Delta
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Sun, 7 Sep - Sun, 14 Sep
United Airlines Logo
17:55 - 06:55AUS-SYD
22h 00m2 stops
United Airlines Logo
10:20 - 16:31SYD-AUS
21h 11m1 stop
$1,788United Airlines
Find Deal
Sun, 21 Sep - Thu, 25 Sep

Air Canada flights from Austin to Sydney

Our best Air Canada deals on Austin to Sydney flight tickets
Air Canada
17 Sept
AUS10:00Austin Bergstrom
30h 20m
2 stops
SYD07:20Sydney Kingsford Smith
24 Sept
SYD09:20Sydney Kingsford Smith
25h 51m
1 stop
AUS20:11Austin Bergstrom
$1,572
Find similar
Air Canada
17 Sept
AUS10:00Austin Bergstrom
30h 20m
2 stops
SYD07:20Sydney Kingsford Smith
24 Sept
SYD09:20Sydney Kingsford Smith
49h 35m
2 stops
AUS19:55Austin Bergstrom
$1,574
Find similar
Air Canada
17 Sept
AUS10:00Austin Bergstrom
30h 20m
2 stops
SYD07:20Sydney Kingsford Smith
24 Sept
SYD09:20Sydney Kingsford Smith
49h 35m
3 stops
AUS19:55Austin Bergstrom
$1,584
Find similar

American Airlines flights from Austin to Sydney

Our best American Airlines deals on Austin to Sydney flight tickets
American Airlines
30 Jan
AUS09:00Austin Bergstrom
31h 00m
1 stop
SYD09:00Sydney Kingsford Smith
15 Feb
SYD11:15Sydney Kingsford Smith
24h 56m
1 stop
AUS19:11Austin Bergstrom
$1,934
Find similar
American Airlines
9 Oct
AUS18:43Austin Bergstrom
20h 12m
1 stop
SYD06:55Sydney Kingsford Smith
16 Oct
SYD13:10Sydney Kingsford Smith
19h 16m
1 stop
AUS16:26Austin Bergstrom
$1,939
Find similar
American Airlines
7 Oct
AUS13:54Austin Bergstrom
25h 36m
1 stop
SYD07:30Sydney Kingsford Smith
14 Oct
SYD10:10Sydney Kingsford Smith
23h 26m
1 stop
AUS17:36Austin Bergstrom
$1,947
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 27 August 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

Wed 17/9

10:00-07:20

2 stops30h 20m

Sydney Kingsford Smith

Wed 24/9

09:20-20:11

1 stop25h 51m

$1,572

AustinSydney

AUS - SYD

AUSSYD

Austin Bergstrom

Wed 17/9

10:00-07:20

2 stops30h 20m

Sydney Kingsford Smith

Wed 24/9

09:20-19:55

2 stops49h 35m

$1,574

AustinSydney

AUS - SYD

AUSSYD

Austin Bergstrom

Wed 17/9

10:00-07:20

2 stops30h 20m

Sydney Kingsford Smith

Wed 24/9

09:20-19:55

3 stops49h 35m

$1,584

AustinSydney

AUS - SYD

AUSSYD

Austin Bergstrom

Wed 24/9

18:12-06:55

1 stop21h 43m

Sydney Kingsford Smith

Wed 1/10

12:10-20:22

1 stop23h 12m

$1,640

AustinSydney

AUS - SYD

AUSSYD

Austin Bergstrom

Wed 17/9

16:54-06:55

1 stop23h 01m

Sydney Kingsford Smith

Wed 24/9

12:10-20:22

1 stop23h 12m

$1,655

AustinSydney

AUS - SYD

AUSSYD

Austin Bergstrom

Wed 4/2

13:00-12:30

2 stops30h 30m

Sydney Kingsford Smith

Wed 11/2

06:00-20:38

2 stops31h 38m

$1,663

AustinSydney

AUS - SYD

AUSSYD

Austin Bergstrom

Sun 7/9

16:00-06:35

1 stop23h 35m

Sydney Kingsford Smith

Sun 14/9

09:25-15:44

1 stop21h 19m

$1,712

AustinSydney

AUS - SYD

AUSSYD

Austin Bergstrom

Wed 24/9

16:20-07:00

2 stops23h 40m

Sydney Kingsford Smith

Wed 1/10

10:20-17:30

2 stops22h 10m

$1,717

AustinSydney

AUS - SYD

AUSSYD

Austin Bergstrom

Sun 7/9

12:40-06:35

2 stops26h 55m

Sydney Kingsford Smith

Sun 14/9

09:25-21:00

2 stops26h 35m

$1,719

AustinSydney

AUS - SYD

AUSSYD

Austin Bergstrom

Sun 21/9

17:55-06:55

2 stops22h 00m

Sydney Kingsford Smith

Thu 25/9

10:20-16:31

1 stop21h 11m

$1,788

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Sydney from

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 $1,662. If you aren’t able to travel to Sydney during the month of May, then flying in August is also cheap. Prices for this month can be found on momondo for an average of $1,668.

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 $351. The most expensive day to fly to Sydney is Tuesday, with ticket prices averaging around $621.

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 $1,988 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 $1,783 on momondo.

Can stopping save me money on Austin to Sydney flights?

You could potentially save up to 20% 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 August 2025, prices for Austin to Sydney flights are approximately 27% 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.
Search flight deals

  • 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 20h 12m, 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
Katoomba
Penrith
Lithgow
Manly
Bondi Beach
Leura
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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