What is the cheapest airline that flies from Austin Bergstrom to Sydney Kingsford Smith?

Air Canada, Delta, and United Airlines are the most popular carriers operating from Austin Bergstrom to Sydney Kingsford Smith

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.

$175 Cheap Flights from Austin to Sydney in 2025/26

Q: What is the typical price of a round-trip flight between Austin and Sydney?

Prices are currently low for flights on this route. Typical prices usually range from $1,857 to $2,990. The lowest price recently found on this route was $1,290.

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Find the cheapest flights from Austin to Sydney

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16:51 - 09:35

AUS

SYD

23h 44m2 stops

11:20 - 21:27

SYD

AUS

51h 07m2 stops

$1,290Multiple Airlines

Sun, 8 Feb - Tue, 17 Feb

15:35 - 09:35

AUS

SYD

25h 00m2 stops

11:20 - 12:19

SYD

AUS

41h 59m2 stops

$1,294Multiple Airlines

Tue, 17 Feb - Wed, 25 Feb

16:51 - 09:35

AUS

SYD

23h 44m2 stops

11:20 - 21:27

SYD

AUS

51h 07m3 stops

$1,299Multiple Airlines

Sun, 8 Feb - Tue, 17 Feb

08:50 - 07:20

AUS

SYD

31h 30m1 stop

09:20 - 09:15

SYD

AUS

38h 55m2 stops

$1,302Air Canada

Tue, 19 May - Tue, 26 May

13:00 - 07:20

AUS

SYD

27h 20m2 stops

09:20 - 09:15

SYD

AUS

38h 55m2 stops

$1,309Air Canada

Tue, 19 May - Tue, 26 May

16:52 - 09:35

AUS

SYD

23h 43m2 stops

11:20 - 12:19

SYD

AUS

41h 59m2 stops

$1,359Multiple Airlines

Mon, 23 Feb - Sat, 28 Feb

11:30 - 09:35

AUS

SYD

53h 05m3 stops

11:20 - 12:19

SYD

AUS

41h 59m2 stops

$1,366Air Canada

Mon, 23 Feb - Sat, 28 Feb

14:45 - 09:00

AUS

SYD

25h 15m1 stop

11:20 - 19:02

SYD

AUS

23h 42m1 stop

$1,378Qantas Airways

Sat, 21 Feb - Tue, 10 Mar

19:52 - 09:00

AUS

SYD

21h 08m1 stop

18:50 - 23:59

SYD

AUS

21h 09m1 stop

$1,380Qantas Airways

Mon, 23 Mar - Sun, 29 Mar

10:50 - 09:35

AUS

SYD

29h 45m2 stops

11:20 - 12:34

SYD

AUS

42h 14m2 stops

$1,381Air Canada

Sun, 8 Feb - Wed, 25 Feb

Qantas Airways flights from Austin to Sydney

Our best Qantas Airways deals on Austin to Sydney flight tickets

Qantas Airways

21 Feb

AUS14:45Austin Bergstrom

25h 15m

1 stop

SYD09:00Sydney Kingsford Smith

10 Mar

SYD11:20Sydney Kingsford Smith

23h 42m

1 stop

AUS19:02Austin Bergstrom

$1,378

Find similar

Qantas Airways

23 Mar

AUS19:52Austin Bergstrom

21h 08m

1 stop

SYD09:00Sydney Kingsford Smith

29 Mar

SYD18:50Sydney Kingsford Smith

21h 09m

1 stop

AUS23:59Austin Bergstrom

$1,380

Find similar

Qantas Airways

8 Feb

AUS18:25Austin Bergstrom

20h 00m

1 stop

SYD07:25Sydney Kingsford Smith

17 Feb

SYD17:45Sydney Kingsford Smith

22h 32m

1 stop

AUS23:17Austin Bergstrom

$1,383

Find similar

United Airlines flights from Austin to Sydney

Our best United Airlines deals on Austin to Sydney flight tickets

United Airlines

10 Feb

AUS17:55Austin Bergstrom

20h 05m

1 stop

SYD07:00Sydney Kingsford Smith

24 Feb

SYD14:00Sydney Kingsford Smith

21h 34m

1 stop

AUS18:34Austin Bergstrom

$1,452

Find similar

United Airlines

23 Dec

AUS19:25Austin Bergstrom

42h 35m

1 stop

SYD07:00Sydney Kingsford Smith

29 Dec

SYD11:50Sydney Kingsford Smith

25h 05m

1 stop

AUS19:55Austin Bergstrom

$1,461

Find similar

United Airlines

23 Dec

AUS19:25Austin Bergstrom

42h 35m

1 stop

SYD07:00Sydney Kingsford Smith

29 Dec

SYD11:20Sydney Kingsford Smith

22h 32m

2 stops

AUS16:52Austin Bergstrom

$1,467

Find similar

Fly from

Fly to

Route

Depart

Return

Price

AustinSydney

AUS - SYD

AUSSYD

Austin Bergstrom

Sun 8/2

16:51-09:35

2 stops23h 44m

Sydney Kingsford Smith

Tue 17/2

11:20-21:27

2 stops51h 07m

$1,290

AustinSydney

AUS - SYD

AUSSYD

Austin Bergstrom

Tue 17/2

15:35-09:35

2 stops25h 00m

Sydney Kingsford Smith

Wed 25/2

11:20-12:19

2 stops41h 59m

$1,294

AustinSydney

AUS - SYD

AUSSYD

Austin Bergstrom

Sun 8/2

16:51-09:35

2 stops23h 44m

Sydney Kingsford Smith

Tue 17/2

11:20-21:27

3 stops51h 07m

$1,299

AustinSydney

AUS - SYD

AUSSYD

Austin Bergstrom

Tue 19/5

08:50-07:20

1 stop31h 30m

Sydney Kingsford Smith

Tue 26/5

09:20-09:15

2 stops38h 55m

$1,302

AustinSydney

AUS - SYD

AUSSYD

Austin Bergstrom

Tue 19/5

13:00-07:20

2 stops27h 20m

Sydney Kingsford Smith

Tue 26/5

09:20-09:15

2 stops38h 55m

$1,309

AustinSydney

AUS - SYD

AUSSYD

Austin Bergstrom

Mon 23/2

16:52-09:35

2 stops23h 43m

Sydney Kingsford Smith

Sat 28/2

11:20-12:19

2 stops41h 59m

$1,359

AustinSydney

AUS - SYD

AUSSYD

Austin Bergstrom

Mon 23/2

11:30-09:35

3 stops53h 05m

Sydney Kingsford Smith

Sat 28/2

11:20-12:19

2 stops41h 59m

$1,366

AustinSydney

AUS - SYD

AUSSYD

Austin Bergstrom

Sat 21/2

14:45-09:00

1 stop25h 15m

Sydney Kingsford Smith

Tue 10/3

11:20-19:02

1 stop23h 42m

$1,378

AustinSydney

AUS - SYD

AUSSYD

Austin Bergstrom

Mon 23/3

19:52-09:00

1 stop21h 08m

Sydney Kingsford Smith

Sun 29/3

18:50-23:59

1 stop21h 09m

$1,380

AustinSydney

AUS - SYD

AUSSYD

Austin Bergstrom

Sun 8/2

10:50-09:35

2 stops29h 45m

Sydney Kingsford Smith

Wed 25/2

11:20-12:34

2 stops42h 14m

$1,381

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

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

Prices

Airlines

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 $1,508. 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 $1,511.

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 $342. The most expensive day to fly to Sydney is Tuesday, with ticket prices averaging around $606.

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 $305. 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 $569 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 $1,782 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 $1,649 on momondo.

How have Austin to Sydney flight prices changed over time?

As of December 2025, prices for Austin to Sydney flights are approximately 42% 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

Fastest flight time	20h 00m
Direct flights	None

The fastest flight from Austin to Sydney takes 20h 00m

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 00m, 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.

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.