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Cheap flights from Santa Rosa to Sydney from $737

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Santa Rosa to Sydney departing on 10/11. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from Santa Rosa to Sydney (STS-SYD)

Cheap round-trip flights

Alaska Airlines Logo
6:25 am - 7:45 pmSTS-SYD
43h 20m2 stops
Alaska Airlines Logo
9:40 pm - 1:36 pmSYD-STS
33h 56m2 stops
$1,071Alaska Airlines
Find Deal
Wed, Oct 15 - Tue, Oct 21
Alaska Airlines Logo
6:25 am - 7:45 pmSTS-SYD
43h 20m2 stops
Alaska Airlines Logo
9:40 pm - 1:26 pmSYD-STS
33h 46m2 stops
$1,080Alaska Airlines
Find Deal
Wed, Oct 15 - Sun, Oct 26
Alaska Airlines Logo
5:00 pm - 7:45 pmSTS-SYD
56h 45m2 stops
Alaska Airlines Logo
9:40 pm - 1:26 pmSYD-STS
33h 46m2 stops
$1,085Alaska Airlines
Find Deal
Sat, Oct 18 - Sun, Oct 26
Alaska Airlines Logo
7:05 am - 7:45 pmSTS-SYD
42h 40m2 stops
Alaska Airlines Logo
9:40 pm - 11:16 pmSYD-STS
19h 36m2 stops
$1,089Alaska Airlines
Find Deal
Wed, Oct 15 - Sat, Oct 25
Alaska Airlines Logo
6:51 pm - 7:45 pmSTS-SYD
30h 54m2 stops
Alaska Airlines Logo
9:40 pm - 1:36 pmSYD-STS
33h 56m2 stops
$1,094Alaska Airlines
Find Deal
Thu, Oct 16 - Tue, Oct 21
Logo
1:36 pm - 1:00 pmSTS-SYD
28h 24m2 stops
Logo
2:00 pm - 11:56 pmSYD-STS
28h 56m2 stops
$1,230
Find Deal
Thu, Nov 27 - Sun, Nov 30
Logo
1:36 pm - 7:25 amSTS-SYD
22h 49m1 stop
Logo
9:30 pm - 12:38 pmSYD-STS
34h 08m2 stops
$1,730
Find Deal
Thu, Nov 27 - Sun, Nov 30
Qantas Airways Logo
7:00 am - 7:30 amSTS-SYD
30h 30m1 stop
Qantas Airways Logo
9:00 pm - 10:10 amSYD-STS
55h 10m2 stops
$1,895Qantas Airways
Find Deal
Wed, Oct 15 - Sun, Oct 26
Qantas Airways Logo
8:00 am - 7:25 amSTS-SYD
28h 25m1 stop
Qantas Airways Logo
5:45 pm - 10:35 pmSYD-STS
23h 50m1 stop
$1,896Qantas Airways
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Wed, Jan 7 - Wed, Jan 21
Singapore Airlines Logo
12:41 pm - 11:25 amSTS-SYD
52h 44m2 stops
Singapore Airlines Logo
4:00 pm - 11:33 pmSYD-STS
49h 33m2 stops
$1,962Singapore Airlines
Find Deal
Sat, Oct 18 - Thu, Oct 23

Qantas Airways flights from Santa Rosa to Sydney

Our best Qantas Airways deals on Santa Rosa to Sydney flight tickets
Qantas Airways
Oct 15
STS7:00 amSanta Rosa Sonoma County
30h 30m
1 stop
SYD7:30 amSydney Kingsford Smith
Oct 26
SYD9:00 pmSydney Kingsford Smith
55h 10m
2 stops
STS10:10 amSanta Rosa Sonoma County
$1,895
Find similar
Qantas Airways
Jan 7
STS8:00 amSanta Rosa Sonoma County
28h 25m
1 stop
SYD7:25 amSydney Kingsford Smith
Jan 21
SYD5:45 pmSydney Kingsford Smith
23h 50m
1 stop
STS10:35 pmSanta Rosa Sonoma County
$1,896
Find similar
Qantas Airways
Jan 7
STS8:00 amSanta Rosa Sonoma County
28h 25m
1 stop
SYD7:25 amSydney Kingsford Smith
Jan 19
SYD5:45 pmSydney Kingsford Smith
38h 11m
1 stop
STS12:56 pmSanta Rosa Sonoma County
$1,904
Find similar

Alaska Airlines flights from Santa Rosa to Sydney

Our best Alaska Airlines deals on Santa Rosa to Sydney flight tickets
Alaska Airlines
Oct 15
STS6:25 amSanta Rosa Sonoma County
43h 20m
2 stops
SYD7:45 pmSydney Kingsford Smith
Oct 21
SYD9:40 pmSydney Kingsford Smith
33h 56m
2 stops
STS1:36 pmSanta Rosa Sonoma County
$1,071
Find similar
Alaska Airlines
Oct 15
STS6:25 amSanta Rosa Sonoma County
43h 20m
2 stops
SYD7:45 pmSydney Kingsford Smith
Oct 26
SYD9:40 pmSydney Kingsford Smith
33h 46m
2 stops
STS1:26 pmSanta Rosa Sonoma County
$1,080
Find similar
Alaska Airlines
Oct 18
STS5:00 pmSanta Rosa Sonoma County
56h 45m
2 stops
SYD7:45 pmSydney Kingsford Smith
Oct 26
SYD9:40 pmSydney Kingsford Smith
33h 46m
2 stops
STS1:26 pmSanta Rosa Sonoma County
$1,085
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Santa Rosa 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 August 27, 2025.
Use the filters below to find and compare flights from Santa Rosa to Sydney that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Santa RosaSydney

STS - SYD

STSSYD

Santa Rosa Sonoma County

Wed 10/15

6:25 am-7:45 pm

2 stops43h 20m

Sydney Kingsford Smith

Tue 10/21

9:40 pm-1:36 pm

2 stops33h 56m

$1,071

Santa RosaSydney

STS - SYD

STSSYD

Santa Rosa Sonoma County

Wed 10/15

6:25 am-7:45 pm

2 stops43h 20m

Sydney Kingsford Smith

Sun 10/26

9:40 pm-1:26 pm

2 stops33h 46m

$1,080

Santa RosaSydney

STS - SYD

STSSYD

Santa Rosa Sonoma County

Sat 10/18

5:00 pm-7:45 pm

2 stops56h 45m

Sydney Kingsford Smith

Sun 10/26

9:40 pm-1:26 pm

2 stops33h 46m

$1,085

Santa RosaSydney

STS - SYD

STSSYD

Santa Rosa Sonoma County

Wed 10/15

7:05 am-7:45 pm

2 stops42h 40m

Sydney Kingsford Smith

Sat 10/25

9:40 pm-11:16 pm

2 stops19h 36m

$1,089

Santa RosaSydney

STS - SYD

STSSYD

Santa Rosa Sonoma County

Thu 10/16

6:51 pm-7:45 pm

2 stops30h 54m

Sydney Kingsford Smith

Tue 10/21

9:40 pm-1:36 pm

2 stops33h 56m

$1,094

Santa RosaSydney

STS - SYD

STSSYD

Santa Rosa Sonoma County

Thu 11/27

1:36 pm-1:00 pm

2 stops28h 24m

Sydney Kingsford Smith

Sun 11/30

2:00 pm-11:56 pm

2 stops28h 56m

$1,230

Santa RosaSydney

STS - SYD

STSSYD

Santa Rosa Sonoma County

Thu 11/27

1:36 pm-7:25 am

1 stop22h 49m

Sydney Kingsford Smith

Sun 11/30

9:30 pm-12:38 pm

2 stops34h 08m

$1,730

Santa RosaSydney

STS - SYD

STSSYD

Santa Rosa Sonoma County

Wed 10/15

7:00 am-7:30 am

1 stop30h 30m

Sydney Kingsford Smith

Sun 10/26

9:00 pm-10:10 am

2 stops55h 10m

$1,895

Santa RosaSydney

STS - SYD

STSSYD

Santa Rosa Sonoma County

Wed 1/7

8:00 am-7:25 am

1 stop28h 25m

Sydney Kingsford Smith

Wed 1/21

5:45 pm-10:35 pm

1 stop23h 50m

$1,896

Santa RosaSydney

STS - SYD

STSSYD

Santa Rosa Sonoma County

Sat 10/18

12:41 pm-11:25 am

2 stops52h 44m

Sydney Kingsford Smith

Thu 10/23

4:00 pm-11:33 pm

2 stops49h 33m

$1,962

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 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

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

The cheapest day to depart from Santa Rosa to Sydney is on a Tuesday when prices can be found for as low as $1,225. The most expensive day to fly to Sydney is Friday, with ticket prices averaging around $1,450.

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 Santa Rosa to Sydney in the afternoon for as low as $1,084. 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 $1,325. Departure times at noon fall within the peak daily travel times, which is why tickets can be more expensive.

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 round-trip 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

Direct flights

None
There are no direct flights from Santa Rosa to Sydney. There are no popular flight routes from Santa Rosa to Sydney.
Search flight deals

  • How far is Santa Rosa Sonoma County to Sydney Kingsford Smith by plane?

    The distance between Santa Rosa Sonoma County and Sydney Kingsford Smith is about 7428.0 mi. Flights usually cover this in 22h 49m, 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 refreshed on a daily basis.

  • How old do you have to be to fly from Santa Rosa Sonoma County 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 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 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 license, 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.

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
Coogee
Cronulla
Lithgow
Penrith
Manly
Leura
Charlestown
Swansea
Terrigal

Why use momondo?

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Santa Rosa to Sydney for you.

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

Flights from Santa Rosa to Sydney with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

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

Once all potential Santa Rosa to Sydney flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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

Yes momondo offers price alerts on flights to Sydney from Santa Rosa. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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