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Cheap flights from Austin to Sydney from $817

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 4/11. 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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Cheap return flights

Qantas Airways Logo
17:45 - 06:55AUS-SYD
20h 10m1 stop
Qantas Airways Logo
07:05 - 11:36SYD-AUS
21h 31m2 stops
$1,549Qantas Airways
Find Deal
Wed, 10 Dec - Fri, 9 Jan
Fiji Airways Logo
20:37 - 13:00AUS-SYD
24h 23m2 stops
Fiji Airways Logo
14:00 - 18:56SYD-AUS
21h 56m2 stops
$1,612Fiji Airways
Find Deal
Thu, 30 Oct - Thu, 6 Nov
Multiple Airlines Logo
17:23 - 19:55AUS-SYD
34h 32m2 stops
Multiple Airlines Logo
09:45 - 23:48SYD-AUS
30h 03m2 stops
$1,686Multiple Airlines
Find Deal
Wed, 11 Mar - Tue, 17 Mar
Multiple Airlines Logo
16:39 - 22:10AUS-SYD
37h 31m2 stops
Multiple Airlines Logo
11:50 - 13:14SYD-AUS
18h 24m1 stop
$1,687Multiple Airlines
Find Deal
Wed, 29 Oct - Wed, 5 Nov
Air New Zealand Logo
13:58 - 08:45AUS-SYD
25h 47m2 stops
Air New Zealand Logo
13:55 - 23:55SYD-AUS
27h 00m2 stops
$1,696Air New Zealand
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Sat, 7 Feb - Sat, 21 Feb
Air Canada Logo
12:15 - 08:35AUS-SYD
28h 20m2 stops
Air Canada Logo
11:20 - 21:06SYD-AUS
26h 46m2 stops
$1,788Air Canada
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Wed, 29 Oct - Wed, 5 Nov
United Airlines Logo
16:18 - 07:00AUS-SYD
22h 42m1 stop
United Airlines Logo
11:50 - 13:14SYD-AUS
18h 24m1 stop
$1,789United Airlines
Find Deal
Wed, 29 Oct - Wed, 5 Nov
Air New Zealand Logo
16:44 - 08:45AUS-SYD
24h 01m2 stops
Air New Zealand Logo
09:55 - 21:58SYD-AUS
28h 03m2 stops
$1,807Air New Zealand
Find Deal
Mon, 13 Oct - Mon, 20 Oct
Air Canada Logo
18:17 - 06:55AUS-SYD
43h 38m2 stops
Air Canada Logo
11:20 - 16:52SYD-AUS
22h 32m2 stops
$1,816Air Canada
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Mon, 15 Dec - Thu, 25 Dec
United Airlines Logo
15:10 - 06:20AUS-SYD
22h 10m1 stop
United Airlines Logo
11:50 - 15:29SYD-AUS
20h 39m1 stop
$1,879United Airlines
Find Deal
Fri, 30 Jan - Sun, 15 Feb

Qantas Airways flights from Austin to Sydney

Our best Qantas Airways deals on Austin to Sydney flight tickets
Qantas Airways
10 Dec
AUS17:45Austin Bergstrom
20h 10m
1 stop
SYD06:55Sydney Kingsford Smith
9 Jan
SYD07:05Sydney Kingsford Smith
21h 31m
2 stops
AUS11:36Austin Bergstrom
$1,549
Find similar
Qantas Airways
7 Feb
AUS19:02Austin Bergstrom
24h 58m
2 stops
SYD13:00Sydney Kingsford Smith
21 Feb
SYD14:05Sydney Kingsford Smith
20h 12m
1 stop
AUS17:17Austin Bergstrom
$1,633
Find similar
Qantas Airways
7 Feb
AUS19:02Austin Bergstrom
24h 58m
2 stops
SYD13:00Sydney Kingsford Smith
21 Feb
SYD14:05Sydney Kingsford Smith
19h 27m
1 stop
AUS16:32Austin Bergstrom
$1,635
Find similar

United Airlines flights from Austin to Sydney

Our best United Airlines deals on Austin to Sydney flight tickets
United Airlines
29 Oct
AUS16:18Austin Bergstrom
22h 42m
1 stop
SYD07:00Sydney Kingsford Smith
5 Nov
SYD11:50Sydney Kingsford Smith
18h 24m
1 stop
AUS13:14Austin Bergstrom
$1,789
Find similar
United Airlines
30 Jan
AUS15:10Austin Bergstrom
22h 10m
1 stop
SYD06:20Sydney Kingsford Smith
15 Feb
SYD11:50Sydney Kingsford Smith
20h 39m
1 stop
AUS15:29Austin Bergstrom
$1,879
Find similar
United Airlines
30 Jan
AUS13:26Austin Bergstrom
26h 49m
1 stop
SYD09:15Sydney Kingsford Smith
15 Feb
SYD11:50Sydney Kingsford Smith
18h 10m
1 stop
AUS13:00Austin Bergstrom
$1,880
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 17 September 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 10/12

17:45-06:55

1 stop20h 10m

Sydney Kingsford Smith

Fri 9/1

07:05-11:36

2 stops21h 31m

$1,549

AustinSydney

AUS - SYD

AUSSYD

Austin Bergstrom

Thu 30/10

20:37-13:00

2 stops24h 23m

Sydney Kingsford Smith

Thu 6/11

14:00-18:56

2 stops21h 56m

$1,612

AustinSydney

AUS - SYD

AUSSYD

Austin Bergstrom

Wed 11/3

17:23-19:55

2 stops34h 32m

Sydney Kingsford Smith

Tue 17/3

09:45-23:48

2 stops30h 03m

$1,686

AustinSydney

AUS - SYD

AUSSYD

Austin Bergstrom

Wed 29/10

16:39-22:10

2 stops37h 31m

Sydney Kingsford Smith

Wed 5/11

11:50-13:14

1 stop18h 24m

$1,687

AustinSydney

AUS - SYD

AUSSYD

Austin Bergstrom

Sat 7/2

13:58-08:45

2 stops25h 47m

Sydney Kingsford Smith

Sat 21/2

13:55-23:55

2 stops27h 00m

$1,696

AustinSydney

AUS - SYD

AUSSYD

Austin Bergstrom

Wed 29/10

12:15-08:35

2 stops28h 20m

Sydney Kingsford Smith

Wed 5/11

11:20-21:06

2 stops26h 46m

$1,788

AustinSydney

AUS - SYD

AUSSYD

Austin Bergstrom

Wed 29/10

16:18-07:00

1 stop22h 42m

Sydney Kingsford Smith

Wed 5/11

11:50-13:14

1 stop18h 24m

$1,789

AustinSydney

AUS - SYD

AUSSYD

Austin Bergstrom

Mon 13/10

16:44-08:45

2 stops24h 01m

Sydney Kingsford Smith

Mon 20/10

09:55-21:58

2 stops28h 03m

$1,807

AustinSydney

AUS - SYD

AUSSYD

Austin Bergstrom

Mon 15/12

18:17-06:55

2 stops43h 38m

Sydney Kingsford Smith

Thu 25/12

11:20-16:52

2 stops22h 32m

$1,816

AustinSydney

AUS - SYD

AUSSYD

Austin Bergstrom

Fri 30/1

15:10-06:20

1 stop22h 10m

Sydney Kingsford Smith

Sun 15/2

11:50-15:29

1 stop20h 39m

$1,879

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 $1,503. 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 $1,618.

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 $341. The most expensive day to fly to Sydney is Tuesday, with ticket prices averaging around $603.

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 $303. 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 $567 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 $1,953 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 $1,771 on momondo.

Can stopping save me money on Austin to Sydney flights?

You could potentially save up to 10% 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 September 2025, prices for Austin to Sydney flights are approximately 53% 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 05m, 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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