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Cheap flights from Austin to Sydney from $539

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 12/6. 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
0 bags

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Cheap round-trip flights

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Qantas Airways Logo
5:00 pm - 6:55 amAUS-SYD
20h 55m1 stop
Qantas Airways Logo
9:55 pm - 12:53 pmSYD-AUS
31h 58m2 stops
$1,098Qantas Airways
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Sun, Nov 2 - Sat, Nov 22
Qantas Airways Logo
2:22 pm - 3:30 pmAUS-SYD
32h 08m2 stops
Qantas Airways Logo
2:05 pm - 6:56 pmSYD-AUS
21h 51m1 stop
$1,101Qantas Airways
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Mon, Nov 24 - Mon, Dec 1
Fiji Airways Logo
8:37 pm - 9:50 pmAUS-SYD
33h 13m2 stops
Fiji Airways Logo
2:10 pm - 7:25 pmSYD-AUS
22h 15m2 stops
$1,134Fiji Airways
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Thu, Oct 30 - Tue, Nov 11
Qantas Airways Logo
5:36 pm - 6:55 amAUS-SYD
20h 19m1 stop
Qantas Airways Logo
7:05 am - 11:15 amSYD-AUS
21h 10m2 stops
$1,148Qantas Airways
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Mon, Nov 10 - Fri, Nov 21
Delta Logo
1:59 pm - 7:35 amAUS-SYD
25h 36m1 stop
Delta Logo
10:40 am - 3:26 pmSYD-AUS
21h 46m1 stop
$1,193Delta
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Tue, Oct 21 - Tue, Nov 11
Delta Logo
1:40 pm - 7:35 amAUS-SYD
25h 55m2 stops
Delta Logo
10:40 am - 7:04 pmSYD-AUS
25h 24m2 stops
$1,197Delta
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Tue, Oct 21 - Tue, Nov 11
Fiji Airways Logo
6:57 pm - 10:10 pmAUS-SYD
35h 13m2 stops
Fiji Airways Logo
2:45 pm - 6:55 pmSYD-AUS
20h 10m2 stops
$1,350Fiji Airways
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Sat, Oct 18 - Sat, Oct 25
United Airlines Logo
4:25 pm - 9:05 amAUS-SYD
23h 40m1 stop
United Airlines Logo
11:50 am - 12:48 amSYD-AUS
29h 58m1 stop
$1,669United Airlines
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Wed, Nov 19 - Sat, Nov 29
United Airlines Logo
2:16 pm - 7:00 amAUS-SYD
23h 44m1 stop
United Airlines Logo
11:50 am - 12:48 amSYD-AUS
29h 58m1 stop
$1,719United Airlines
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Sat, Nov 22 - Sat, Nov 29
American Airlines Logo
2:28 pm - 9:00 amAUS-SYD
25h 32m1 stop
American Airlines Logo
2:05 pm - 9:57 pmSYD-AUS
24h 52m1 stop
$1,816American Airlines
Find Deal
Sat, Nov 22 - Sun, Nov 30

Delta flights from Austin to Sydney

Our best Delta deals on Austin to Sydney flight tickets
Delta
Oct 21
AUS1:59 pmAustin Bergstrom
25h 36m
1 stop
SYD7:35 amSydney Kingsford Smith
Nov 11
SYD10:40 amSydney Kingsford Smith
21h 46m
1 stop
AUS3:26 pmAustin Bergstrom
$1,193
Find similar
Delta
Oct 21
AUS1:40 pmAustin Bergstrom
25h 55m
2 stops
SYD7:35 amSydney Kingsford Smith
Nov 11
SYD10:40 amSydney Kingsford Smith
25h 24m
2 stops
AUS7:04 pmAustin Bergstrom
$1,197
Find similar
Delta
Nov 10
AUS7:24 pmAustin Bergstrom
20h 06m
1 stop
SYD8:30 amSydney Kingsford Smith
Nov 21
SYD10:40 amSydney Kingsford Smith
21h 46m
1 stop
AUS3:26 pmAustin Bergstrom
$1,555
Find similar

Air New Zealand flights from Austin to Sydney

Our best Air New Zealand deals on Austin to Sydney flight tickets
Air New Zealand
Nov 24
AUS9:45 amAustin Bergstrom
33h 55m
2 stops
SYD12:40 pmSydney Kingsford Smith
Dec 1
SYD1:55 pmSydney Kingsford Smith
40h 57m
2 stops
AUS1:52 pmAustin Bergstrom
$1,222
Find similar
Air New Zealand
Nov 22
AUS7:43 pmAustin Bergstrom
44h 02m
2 stops
SYD8:45 amSydney Kingsford Smith
Nov 29
SYD7:15 pmSydney Kingsford Smith
44h 44m
2 stops
AUS10:59 pmAustin Bergstrom
$1,238
Find similar
Air New Zealand
Nov 10
AUS5:59 pmAustin Bergstrom
21h 46m
2 stops
SYD8:45 amSydney Kingsford Smith
Nov 21
SYD9:55 amSydney Kingsford Smith
24h 26m
2 stops
AUS5:21 pmAustin Bergstrom
$1,244
Find similar

momondo Fare Finder

 
Customize 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 832,500 searches. Data last updated October 9, 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

Sun 11/2

5:00 pm-6:55 am

1 stop20h 55m

Sydney Kingsford Smith

Sat 11/22

9:55 pm-12:53 pm

2 stops31h 58m

$1,098

AustinSydney

AUS - SYD

AUSSYD

Austin Bergstrom

Mon 11/24

2:22 pm-3:30 pm

2 stops32h 08m

Sydney Kingsford Smith

Mon 12/1

2:05 pm-6:56 pm

1 stop21h 51m

$1,101

AustinSydney

AUS - SYD

AUSSYD

Austin Bergstrom

Thu 10/30

8:37 pm-9:50 pm

2 stops33h 13m

Sydney Kingsford Smith

Tue 11/11

2:10 pm-7:25 pm

2 stops22h 15m

$1,134

AustinSydney

AUS - SYD

AUSSYD

Austin Bergstrom

Mon 11/10

5:36 pm-6:55 am

1 stop20h 19m

Sydney Kingsford Smith

Fri 11/21

7:05 am-11:15 am

2 stops21h 10m

$1,148

AustinSydney

AUS - SYD

AUSSYD

Austin Bergstrom

Tue 10/21

1:59 pm-7:35 am

1 stop25h 36m

Sydney Kingsford Smith

Tue 11/11

10:40 am-3:26 pm

1 stop21h 46m

$1,193

AustinSydney

AUS - SYD

AUSSYD

Austin Bergstrom

Tue 10/21

1:40 pm-7:35 am

2 stops25h 55m

Sydney Kingsford Smith

Tue 11/11

10:40 am-7:04 pm

2 stops25h 24m

$1,197

AustinSydney

AUS - SYD

AUSSYD

Austin Bergstrom

Sat 10/18

6:57 pm-10:10 pm

2 stops35h 13m

Sydney Kingsford Smith

Sat 10/25

2:45 pm-6:55 pm

2 stops20h 10m

$1,350

AustinSydney

AUS - SYD

AUSSYD

Austin Bergstrom

Wed 11/19

4:25 pm-9:05 am

1 stop23h 40m

Sydney Kingsford Smith

Sat 11/29

11:50 am-12:48 am

1 stop29h 58m

$1,669

AustinSydney

AUS - SYD

AUSSYD

Austin Bergstrom

Sat 11/22

2:16 pm-7:00 am

1 stop23h 44m

Sydney Kingsford Smith

Sat 11/29

11:50 am-12:48 am

1 stop29h 58m

$1,719

AustinSydney

AUS - SYD

AUSSYD

Austin Bergstrom

Sat 11/22

2:28 pm-9:00 am

1 stop25h 32m

Sydney Kingsford Smith

Sun 11/30

2:05 pm-9:57 pm

1 stop24h 52m

$1,816

Flights are sorted by cheapest round-trip 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?

In general, May is the cheapest month to fly from Austin to Sydney. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $1,002. If you are unable to visit Sydney during the month of May, then departing from Austin during the month September is also very affordable. Most momondo users find prices during this month for around $1,079.

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

The cheapest day to depart from Austin to Sydney is on a Saturday when prices can be found for as low as $290. The most expensive day to fly to Sydney is Sunday, with ticket prices averaging around $1,047.

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 afternoon. momondo users have found flights departing from Austin to Sydney in the afternoon for as low as $207. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights to Sydney are more costly at noon, with an average ticket price of $1,244. Departure times at noon fall within the peak daily travel times, which is why tickets can be more expensive.

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 $1,251 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Sydney from Austin for as low as $1,165 on momondo.

Can stopping save me money on Austin to Sydney flights?

You could potentially save up to 2% 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 round-trip 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?

    Austin Bergstrom and Sydney Kingsford Smith are 8463.9 mi apart from one another. Typically, this will take 20h 05m by plane in normal conditions.

  • 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 are updated daily.

  • How many operators does momondo search for flights from Austin Bergstrom Airport to Sydney Kingsford Smith Airport?

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

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for 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 required travel and health documents for your Sydney Kingsford Smith Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Sydney Kingsford Smith Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • What is the most popular airline from Austin to Sydney?

Best airlines flying from Austin to Sydney

Compare and see reviews for airlines that fly from Austin to Sydney with momondo
Airline
Rating
Free Cancellation
Price
DeltaPriceFrom $469Free CancellationRating
7.9
7,969 reviews
Search Delta flights
Fiji AirwaysPriceFrom $717Free CancellationRating
8.0
205 reviews
Search Fiji Airways flights
American AirlinesPriceFrom $891Free CancellationRating
7.2
11,043 reviews
Search American Airlines flights
United AirlinesPriceFrom $909Free CancellationRating
7.4
8,968 reviews
Search United Airlines flights
Qantas AirwaysPriceFrom $1,002Free CancellationRating
7.5
917 reviews
Search Qantas Airways flights

Traveling to a place near Sydney?

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

Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Austin to Sydney. Millions of users trust and use momondo every year so you are in good hands.

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

All flight searches from Austin to Sydney on momondo can be filtered to show those which offer flexible booking policies.

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

momondo provides multiple filters to help you find the best flight to Sydney from Austin. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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

If you are not ready to book a flight from Austin to Sydney now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Sydney and let you know when they change.

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