Latest deals
Insights
When to book
FAQs
Price Alerts

Cheap flights from Austin to Sydney from $778

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 28/1. 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

Save money when you book flights with momondo

Big names, great deals

Big names, great deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customise your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from Austin to Sydney

Cheap return flights

Enter your travel dates to find the best prices.
Air Canada Logo
08:30 - 07:20
AUS
-
SYD
31h 50m1 stop
Air Canada Logo
09:20 - 08:44
SYD
-
AUS
38h 24m2 stops
$1,259Air Canada
Mon, 18 May - Tue, 26 May
Air Canada Logo
14:15 - 07:20
AUS
-
SYD
26h 05m2 stops
Air Canada Logo
09:20 - 08:44
SYD
-
AUS
38h 24m2 stops
$1,265Air Canada
Mon, 18 May - Tue, 26 May
Air Canada Logo
08:30 - 07:20
AUS
-
SYD
31h 50m1 stop
Air Canada Logo
09:20 - 10:29
SYD
-
AUS
40h 09m2 stops
$1,288Air Canada
Tue, 19 May - Tue, 26 May
Air Canada Logo
08:30 - 07:20
AUS
-
SYD
31h 50m1 stop
Air Canada Logo
09:20 - 23:38
SYD
-
AUS
29h 18m2 stops
$1,292Air Canada
Tue, 19 May - Tue, 26 May
Multiple Airlines Logo
16:52 - 09:35
AUS
-
SYD
23h 43m2 stops
Multiple Airlines Logo
11:20 - 12:19
SYD
-
AUS
41h 59m2 stops
$1,294Multiple Airlines
Tue, 17 Feb - Wed, 25 Feb
Air Canada Logo
08:30 - 07:20
AUS
-
SYD
31h 50m1 stop
Air Canada Logo
09:20 - 10:29
SYD
-
AUS
40h 09m1 stop
$1,295Air Canada
Tue, 19 May - Tue, 26 May
Multiple Airlines Logo
13:00 - 09:35
AUS
-
SYD
27h 35m2 stops
Multiple Airlines Logo
11:20 - 21:27
SYD
-
AUS
51h 07m3 stops
$1,298Multiple Airlines
Tue, 17 Feb - Wed, 25 Feb
Air Canada Logo
16:51 - 09:35
AUS
-
SYD
23h 44m2 stops
Air Canada Logo
11:20 - 19:57
SYD
-
AUS
25h 37m2 stops
$1,300Air Canada
Mon, 9 Feb - Sun, 22 Feb
Air Canada Logo
11:30 - 09:35
AUS
-
SYD
53h 05m3 stops
Air Canada Logo
11:20 - 12:19
SYD
-
AUS
41h 59m2 stops
$1,303Air Canada
Mon, 9 Feb - Sun, 22 Feb
Air Canada Logo
13:05 - 09:35
AUS
-
SYD
27h 30m1 stop
Air Canada Logo
11:20 - 12:19
SYD
-
AUS
41h 59m2 stops
$1,304Air Canada
Mon, 9 Feb - Sun, 22 Feb

United Airlines flights from Austin to Sydney

Our best United Airlines deals on Austin to Sydney flight tickets
United Airlines
17 Feb
AUS17:59Austin Bergstrom
20h 01m
1 stop
SYD07:00Sydney Kingsford Smith
25 Feb
SYD11:50Sydney Kingsford Smith
25h 07m
1 stop
AUS19:57Austin Bergstrom
$1,452
Find similar
United Airlines
17 Feb
AUS09:43Austin Bergstrom
28h 17m
1 stop
SYD07:00Sydney Kingsford Smith
25 Feb
SYD11:50Sydney Kingsford Smith
20h 32m
1 stop
AUS15:22Austin Bergstrom
$1,454
Find similar
United Airlines
15 Apr
AUS18:04Austin Bergstrom
21h 56m
2 stops
SYD07:00Sydney Kingsford Smith
27 Apr
SYD10:20Sydney Kingsford Smith
21h 38m
2 stops
AUS16:58Austin Bergstrom
$1,460
Find similar

Qantas Airways flights from Austin to Sydney

Our best Qantas Airways deals on Austin to Sydney flight tickets
Qantas Airways
16 May
AUS15:00Austin Bergstrom
25h 05m
1 stop
SYD07:05Sydney Kingsford Smith
23 May
SYD17:50Sydney Kingsford Smith
20h 48m
1 stop
AUS23:38Austin Bergstrom
$1,381
Find similar
Qantas Airways
7 Feb
AUS19:34Austin Bergstrom
20h 26m
1 stop
SYD09:00Sydney Kingsford Smith
14 Feb
SYD17:45Sydney Kingsford Smith
22h 32m
1 stop
AUS23:17Austin Bergstrom
$1,393
Find similar
Qantas Airways
24 Jan
AUS18:25Austin Bergstrom
20h 00m
1 stop
SYD07:25Sydney Kingsford Smith
7 Feb
SYD11:20Sydney Kingsford Smith
23h 15m
1 stop
AUS17:35Austin Bergstrom
$1,401
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 5 December 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 18/5

08:30-07:20

1 stop31h 50m

Sydney Kingsford Smith

Tue 26/5

09:20-08:44

2 stops38h 24m

$1,259

AustinSydney

AUS - SYD

AUSSYD

Austin Bergstrom

Mon 18/5

14:15-07:20

2 stops26h 05m

Sydney Kingsford Smith

Tue 26/5

09:20-08:44

2 stops38h 24m

$1,265

AustinSydney

AUS - SYD

AUSSYD

Austin Bergstrom

Tue 19/5

08:30-07:20

1 stop31h 50m

Sydney Kingsford Smith

Tue 26/5

09:20-10:29

2 stops40h 09m

$1,288

AustinSydney

AUS - SYD

AUSSYD

Austin Bergstrom

Tue 19/5

08:30-07:20

1 stop31h 50m

Sydney Kingsford Smith

Tue 26/5

09:20-23:38

2 stops29h 18m

$1,292

AustinSydney

AUS - SYD

AUSSYD

Austin Bergstrom

Tue 17/2

16:52-09:35

2 stops23h 43m

Sydney Kingsford Smith

Wed 25/2

11:20-12:19

2 stops41h 59m

$1,294

AustinSydney

AUS - SYD

AUSSYD

Austin Bergstrom

Tue 19/5

08:30-07:20

1 stop31h 50m

Sydney Kingsford Smith

Tue 26/5

09:20-10:29

1 stop40h 09m

$1,295

AustinSydney

AUS - SYD

AUSSYD

Austin Bergstrom

Tue 17/2

13:00-09:35

2 stops27h 35m

Sydney Kingsford Smith

Wed 25/2

11:20-21:27

3 stops51h 07m

$1,298

AustinSydney

AUS - SYD

AUSSYD

Austin Bergstrom

Mon 9/2

16:51-09:35

2 stops23h 44m

Sydney Kingsford Smith

Sun 22/2

11:20-19:57

2 stops25h 37m

$1,300

AustinSydney

AUS - SYD

AUSSYD

Austin Bergstrom

Mon 9/2

11:30-09:35

3 stops53h 05m

Sydney Kingsford Smith

Sun 22/2

11:20-12:19

2 stops41h 59m

$1,303

AustinSydney

AUS - SYD

AUSSYD

Austin Bergstrom

Mon 9/2

13:05-09:35

1 stop27h 30m

Sydney Kingsford Smith

Sun 22/2

11:20-12:19

2 stops41h 59m

$1,304

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

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 $1,499. 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 $1,535.

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 $343. The most expensive day to fly to Sydney is Tuesday, with ticket prices averaging around $607.

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 $571 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 $1,814 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 $1,632 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 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 27m

Direct flights

None
The fastest flight from Austin to Sydney takes 20h 27m
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.

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
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.

An easier way to manage your Sydney trip

We make it super easy to schedule, organise and travel with friends or family. Trips is free – and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Sun 4/1
Sun 11/1
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Australia