What is the cheapest airline that flies from Santa Rosa Sonoma County to Sydney Kingsford Smith?

Delta and Alaska Airlines are the most popular carriers operating from Santa Rosa Sonoma County to Sydney Kingsford Smith

Which airlines fly to Sydney?

Qantas Airways, United Airlines and Fiji Airways are the top three most popular airlines that fly to Sydney from Santa Rosa according to our data. Qantas Airways is the first choice among our users, with 30% of people opting to fly with this airline when travelling to Sydney. Keep in mind that there are 4 different airlines that fly to Sydney on a routine basis, so you have a few additional options to choose from.

When did momondo last update prices for flights from Santa Rosa Sonoma County Airport to Sydney Kingsford Smith Airport?

Prices for flights from Santa Rosa Sonoma County Airport to Sydney Kingsford Smith Airport are updated daily.

How old do you have to be to fly from Santa Rosa Sonoma County Airport to Sydney Kingsford Smith Airport?

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and stopovers. It is recommended that you verify with the airline you are booking with for travel from Santa Rosa Sonoma County 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 you'll need for your trip to Sydney Kingsford Smith Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's licence and a passport that is valid for six months after your intended arrival at Sydney Kingsford Smith Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

$965 Cheap Flights from Santa Rosa to Sydney in 2026

Find the cheapest flights from Santa Rosa to Sydney

Return

One-way

Cheap return flights

Enter your travel dates to find the best prices.

13:53 - 06:35STS Santa Rosa Sonoma County-SYD Sydney Kingsford Smith

21h 42m1 stop Las Vegas Harry Reid Intl

11:05 - 15:57SYD Sydney Kingsford Smith-STS Santa Rosa Sonoma County

23h 52m3 stops Brisbane Los Angeles Phoenix Sky Harbor Intl

$1,523Multiple Airlines

Tue, 26 Jan - Sat, 13 Feb

11:57 - 18:50STS Santa Rosa Sonoma County-SYD Sydney Kingsford Smith

36h 53m2 stops Los Angeles Honolulu

21:40 - 11:17SYD Sydney Kingsford Smith-STS Santa Rosa Sonoma County

31h 37m2 stops Honolulu Los Angeles

$1,857Multiple Airlines

Thu, 22 Oct - Thu, 29 Oct

13:53 - 06:35STS Santa Rosa Sonoma County-SYD Sydney Kingsford Smith

21h 42m1 stop Las Vegas Harry Reid Intl

11:15 - 11:07SYD Sydney Kingsford Smith-STS Santa Rosa Sonoma County

18h 52m1 stop Los Angeles

$1,879Multiple Airlines

Tue, 26 Jan - Sat, 13 Feb

13:18 - 06:25STS Santa Rosa Sonoma County-SYD Sydney Kingsford Smith

22h 07m2 stops Phoenix Sky Harbor Intl Los Angeles

09:55 - 15:57SYD Sydney Kingsford Smith-STS Santa Rosa Sonoma County

25h 02m3 stops Brisbane Los Angeles Phoenix Sky Harbor Intl

$1,892Multiple Airlines

Tue, 26 Jan - Sat, 13 Feb

07:00 - 06:25STS Santa Rosa Sonoma County-SYD Sydney Kingsford Smith

28h 25m3 stops Seattle/Tacoma Intl Portland Los Angeles

09:55 - 15:57SYD Sydney Kingsford Smith-STS Santa Rosa Sonoma County

25h 02m3 stops Brisbane Los Angeles Phoenix Sky Harbor Intl

$1,892Multiple Airlines

Tue, 26 Jan - Sat, 13 Feb

11:57 - 07:30STS Santa Rosa Sonoma County-SYD Sydney Kingsford Smith

25h 33m1 stop Los Angeles

12:30 - 11:17SYD Sydney Kingsford Smith-STS Santa Rosa Sonoma County

40h 47m2 stops Xiamen Gaoqi Intl Los Angeles

$1,926Multiple Airlines

Thu, 22 Oct - Thu, 29 Oct

18:26 - 07:30STS Santa Rosa Sonoma County-SYD Sydney Kingsford Smith

19h 04m1 stop Los Angeles

11:15 - 11:17SYD Sydney Kingsford Smith-STS Santa Rosa Sonoma County

18h 02m1 stop Los Angeles

$1,937Multiple Airlines

Thu, 22 Oct - Thu, 29 Oct

13:18 - 09:00STS Santa Rosa Sonoma County-SYD Sydney Kingsford Smith

24h 42m2 stops Phoenix Sky Harbor Intl Los Angeles

11:15 - 11:07SYD Sydney Kingsford Smith-STS Santa Rosa Sonoma County

18h 52m1 stop Los Angeles

$2,090Multiple Airlines

Tue, 26 Jan - Sat, 13 Feb

09:10 - 19:45STS Santa Rosa Sonoma County-SYD Sydney Kingsford Smith

39h 35m2 stops Phoenix Sky Harbor Intl Honolulu

21:40 - 19:28SYD Sydney Kingsford Smith-STS Santa Rosa Sonoma County

40h 48m2 stops Honolulu Portland

$2,369Multiple Airlines

Sun, 8 Nov - Thu, 12 Nov

09:10 - 19:45STS Santa Rosa Sonoma County-SYD Sydney Kingsford Smith

39h 35m2 stops Phoenix Sky Harbor Intl Honolulu

21:40 - 19:28SYD Sydney Kingsford Smith-STS Santa Rosa Sonoma County

40h 48m2 stops Honolulu Portland

$2,402Multiple Airlines

Sun, 8 Nov - Thu, 12 Nov

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Qatar Airways flights from Santa Rosa to Sydney

Our best Qatar Airways deals on Santa Rosa to Sydney flight tickets

Qatar Airways

22 Oct

STS07:00Santa Rosa Sonoma County

54h 10m

2 stops

SYD07:10Sydney Kingsford Smith

29 Oct

SYD18:00Sydney Kingsford Smith

45h 56m

3 stops

STS21:56Santa Rosa Sonoma County

$2,557

Qatar Airways

20 Dec

STS07:00Santa Rosa Sonoma County

42h 55m

3 stops

SYD20:55Sydney Kingsford Smith

4 Jan

SYD15:50Sydney Kingsford Smith

45h 41m

2 stops

STS18:31Santa Rosa Sonoma County

$3,361

Alaska Airlines flights from Santa Rosa to Sydney

Our best Alaska Airlines deals on Santa Rosa to Sydney flight tickets

Alaska Airlines

23 Dec

STS07:00Santa Rosa Sonoma County

31h 00m

1 stop

SYD09:00Sydney Kingsford Smith

30 Dec

SYD11:20Sydney Kingsford Smith

19h 06m

1 stop

STS11:26Santa Rosa Sonoma County

$2,700

Alaska Airlines

23 Dec

STS07:00Santa Rosa Sonoma County

31h 00m

1 stop

SYD09:00Sydney Kingsford Smith

30 Dec

SYD11:20Sydney Kingsford Smith

29h 10m

2 stops

STS21:30Santa Rosa Sonoma County

$2,707

Alaska Airlines

8 Nov

STS07:20Santa Rosa Sonoma County

30h 40m

1 stop

SYD09:00Sydney Kingsford Smith

12 Nov

SYD11:10Sydney Kingsford Smith

21h 19m

1 stop

STS13:29Santa Rosa Sonoma County

$3,075

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

Santa RosaSydney

STS Santa Rosa Sonoma County - SYD Sydney Kingsford Smith

STSSYD

Santa Rosa Sonoma County

Tue 26/1

13:53-06:35

1 stop21h 42m

Sydney Kingsford Smith

Sat 13/2

11:05-15:57

3 stops23h 52m

$1,523

Santa RosaSydney

STS Santa Rosa Sonoma County - SYD Sydney Kingsford Smith

STSSYD

Santa Rosa Sonoma County

Thu 22/10

11:57-18:50

2 stops36h 53m

Sydney Kingsford Smith

Thu 29/10

21:40-11:17

2 stops31h 37m

$1,856

Santa RosaSydney

STS Santa Rosa Sonoma County - SYD Sydney Kingsford Smith

STSSYD

Santa Rosa Sonoma County

Tue 26/1

13:53-06:35

1 stop21h 42m

Sydney Kingsford Smith

Sat 13/2

11:15-11:07

1 stop18h 52m

$1,879

Santa RosaSydney

STS Santa Rosa Sonoma County - SYD Sydney Kingsford Smith

STSSYD

Santa Rosa Sonoma County

Tue 26/1

13:18-06:25

2 stops22h 07m

Sydney Kingsford Smith

Sat 13/2

09:55-15:57

3 stops25h 02m

$1,892

Santa RosaSydney

STS Santa Rosa Sonoma County - SYD Sydney Kingsford Smith

STSSYD

Santa Rosa Sonoma County

Tue 26/1

07:00-06:25

3 stops28h 25m

Sydney Kingsford Smith

Sat 13/2

09:55-15:57

3 stops25h 02m

$1,892

Santa RosaSydney

STS Santa Rosa Sonoma County - SYD Sydney Kingsford Smith

STSSYD

Santa Rosa Sonoma County

Thu 22/10

11:57-07:30

1 stop25h 33m

Sydney Kingsford Smith

Thu 29/10

12:30-11:17

2 stops40h 47m

$1,926

Fastest return journey

Santa RosaSydney

STS Santa Rosa Sonoma County - SYD Sydney Kingsford Smith

STSSYD

Santa Rosa Sonoma County

Thu 22/10

18:26-07:30

1 stop19h 04m

Sydney Kingsford Smith

Thu 29/10

11:15-11:17

1 stop18h 02m

$1,937

Santa RosaSydney

STS Santa Rosa Sonoma County - SYD Sydney Kingsford Smith

STSSYD

Santa Rosa Sonoma County

Tue 26/1

13:18-09:00

2 stops24h 42m

Sydney Kingsford Smith

Sat 13/2

11:15-11:07

1 stop18h 52m

$2,090

Santa RosaSydney

STS Santa Rosa Sonoma County - SYD Sydney Kingsford Smith

STSSYD

Santa Rosa Sonoma County

Sun 8/11

09:10-19:45

2 stops39h 35m

Sydney Kingsford Smith

Thu 12/11

21:40-19:28

2 stops40h 48m

$2,369

Santa RosaSydney

STS Santa Rosa Sonoma County - SYD Sydney Kingsford Smith

STSSYD

Santa Rosa Sonoma County

Sun 8/11

09:10-19:45

2 stops39h 35m

Sydney Kingsford Smith

Thu 12/11

21:40-19:28

2 stops40h 48m

$2,402

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 Santa Rosa 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 cheapest day to depart on your flight to Sydney?

Our data shows that Tuesday is the least expensive day to fly to Sydney. Tickets to fly out on this day can be as low as $1,861. The most expensive day to fly to Sydney is Sunday, with ticket prices averaging around $2,689.

When to book flights from Santa Rosa to Sydney

Are you open to changing your travel dates? Check out the ideal times to fly from Santa Rosa to Sydney according to our flight data. Find out which month and days have the cheapest flights.

Estimated return price

Cheap Santa Rosa to Sydney (STS to SYD) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Santa Rosa to Sydney

Best price found	$965
Fastest flight time	21h 42m
Direct flights	None

The best one-way flight to Sydney from Santa Rosa in the past 72 hours is $965. The best return flight deal from Santa Rosa to Sydney found on momondo in the last 72 hours is $1,523.

The fastest flight from Santa Rosa to Sydney takes 21h 42m

There are no direct flights from Santa Rosa to Sydney. There are no popular flight routes from Santa Rosa to Sydney.

Search flight deals

Frequently asked questions about flying from Santa Rosa to Sydney

How far is Santa Rosa Sonoma County to Sydney Kingsford Smith by plane?
Santa Rosa Sonoma County and Sydney Kingsford Smith are 11954.2 km apart from one another. Flights usually cover this in 21h 42m, depending on flying conditions and air traffic around both airports.
When did momondo last update prices for flights from Santa Rosa Sonoma County Airport to Sydney Kingsford Smith Airport?
Prices for flights from Santa Rosa Sonoma County Airport to Sydney Kingsford Smith Airport are updated daily.
How old do you have to be to fly from Santa Rosa Sonoma County Airport to Sydney Kingsford Smith Airport?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and stopovers. It is recommended that you verify with the airline you are booking with for travel from Santa Rosa Sonoma County 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 you'll need for your trip to Sydney Kingsford Smith Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's licence and a passport that is valid for six months after your intended arrival at Sydney Kingsford Smith Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

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Why use momondo?

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

It is quick and easy to find Santa Rosa to Sydney flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Sydney that suits you.

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

Yes. momondo enables you to select and highlight flights to Sydney from Santa Rosa with this policy.

How can momondo help me find flights from Santa Rosa to Sydney?

Once you have performed a search for Santa Rosa to Sydney flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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

If you are not ready to book a flight from Santa Rosa 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.