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Cheap flights from San Diego to Sydney from $431

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from San Diego to Sydney departing on 9/16. 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 San Diego to Sydney

Cheap round-trip flights

Air Canada Logo
2:20 pm - 7:20 amSAN-SYD
24h 00m1 stop
Air Canada Logo
9:20 am - 1:20 pmSYD-SAN
21h 00m1 stop
$868Air Canada
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Sa, Sep 6 - Fr, Sep 19
Air Canada Logo
2:20 pm - 7:20 amSAN-SYD
24h 00m1 stop
Air Canada Logo
9:20 am - 1:20 pmSYD-SAN
21h 00m1 stop
$869Air Canada
Find Deal
Sa, Sep 6 - Fr, Sep 19
American Airlines Logo
4:42 pm - 6:55 amSAN-SYD
21h 13m1 stop
American Airlines Logo
10:10 am - 3:30 pmSYD-SAN
23h 20m2 stops
$925American Airlines
Find Deal
Do, Okt 2 - Do, Okt 9
American Airlines Logo
2:34 pm - 6:55 amSAN-SYD
23h 21m1 stop
American Airlines Logo
1:10 pm - 5:58 pmSYD-SAN
22h 48m1 stop
$926American Airlines
Find Deal
Do, Okt 2 - Do, Okt 9
Logo
12:40 pm - 10:40 amSAN-SYD
29h 00m2 stops
Logo
6:00 am - 1:20 pmSYD-SAN
24h 20m2 stops
$927
Find Deal
Fr, Aug 29 - Di, Sep 9
United Airlines Logo
2:21 pm - 6:55 amSAN-SYD
23h 34m2 stops
United Airlines Logo
10:20 am - 1:40 pmSYD-SAN
20h 20m2 stops
$930United Airlines
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Sa, Aug 30 - Fr, Sep 12
Logo
2:20 pm - 7:20 amSAN-SYD
24h 00m1 stop
Logo
6:30 am - 1:20 pmSYD-SAN
23h 50m2 stops
$931
Find Deal
Do, Sep 11 - Fr, Sep 26
United Airlines Logo
2:21 pm - 6:55 amSAN-SYD
23h 34m2 stops
United Airlines Logo
10:20 am - 3:01 pmSYD-SAN
21h 41m2 stops
$945United Airlines
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Do, Aug 28 - Mi, Sep 10
Delta Logo
10:00 am - 8:30 amSAN-SYD
27h 30m1 stop
Delta Logo
2:15 pm - 3:25 pmSYD-SAN
20h 10m1 stop
$951Delta
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Di, Dez 2 - Sa, Dez 20
Delta Logo
10:00 am - 8:30 amSAN-SYD
27h 30m1 stop
Delta Logo
10:40 am - 4:07 pmSYD-SAN
24h 27m2 stops
$955Delta
Find Deal
Di, Dez 2 - Sa, Dez 20

United Airlines flights from San Diego to Sydney

Our best United Airlines deals on San Diego to Sydney flight tickets
United Airlines
Aug 30
SAN2:21 pmSan Diego
23h 34m
2 stops
SYD6:55 amSydney Kingsford Smith
Sep 12
SYD10:20 amSydney Kingsford Smith
20h 20m
2 stops
SAN1:40 pmSan Diego
$930
Find similar
United Airlines
Aug 28
SAN2:21 pmSan Diego
23h 34m
2 stops
SYD6:55 amSydney Kingsford Smith
Sep 10
SYD10:20 amSydney Kingsford Smith
21h 41m
2 stops
SAN3:01 pmSan Diego
$945
Find similar
United Airlines
Sep 17
SAN6:15 amSan Diego
31h 45m
1 stop
SYD7:00 amSydney Kingsford Smith
Sep 27
SYD10:20 amSydney Kingsford Smith
41h 07m
2 stops
SAN10:27 amSan Diego
$966
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American Airlines flights from San Diego to Sydney

Our best American Airlines deals on San Diego to Sydney flight tickets
American Airlines
Oct 2
SAN4:42 pmSan Diego
21h 13m
1 stop
SYD6:55 amSydney Kingsford Smith
Oct 9
SYD10:10 amSydney Kingsford Smith
23h 20m
2 stops
SAN3:30 pmSan Diego
$925
Find similar
American Airlines
Oct 2
SAN2:34 pmSan Diego
23h 21m
1 stop
SYD6:55 amSydney Kingsford Smith
Oct 9
SYD1:10 pmSydney Kingsford Smith
22h 48m
1 stop
SAN5:58 pmSan Diego
$926
Find similar
American Airlines
Aug 28
SAN3:30 pmSan Diego
22h 25m
1 stop
SYD6:55 amSydney Kingsford Smith
Sep 10
SYD9:10 amSydney Kingsford Smith
22h 20m
2 stops
SAN2:30 pmSan Diego
$929
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from San Diego 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 18, 2025.
Use the filters below to find and compare flights from San Diego to Sydney that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

San DiegoSydney

SAN - SYD

SANSYD

San Diego

Sa 9/6

2:20 pm-7:20 am

1 stop24h 00m

Sydney Kingsford Smith

Fr 9/19

9:20 am-1:20 pm

1 stop21h 00m

$868

San DiegoSydney

SAN - SYD

SANSYD

San Diego

Sa 9/6

2:20 pm-7:20 am

1 stop24h 00m

Sydney Kingsford Smith

Fr 9/19

9:20 am-1:20 pm

1 stop21h 00m

$869

San DiegoSydney

SAN - SYD

SANSYD

San Diego

Do 10/2

4:42 pm-6:55 am

1 stop21h 13m

Sydney Kingsford Smith

Do 10/9

10:10 am-3:30 pm

2 stops23h 20m

$925

San DiegoSydney

SAN - SYD

SANSYD

San Diego

Do 10/2

2:34 pm-6:55 am

1 stop23h 21m

Sydney Kingsford Smith

Do 10/9

1:10 pm-5:58 pm

1 stop22h 48m

$926

San DiegoSydney

SAN - SYD

SANSYD

San Diego

Fr 8/29

12:40 pm-10:40 am

2 stops29h 00m

Sydney Kingsford Smith

Di 9/9

6:00 am-1:20 pm

2 stops24h 20m

$927

San DiegoSydney

SAN - SYD

SANSYD

San Diego

Sa 8/30

2:21 pm-6:55 am

2 stops23h 34m

Sydney Kingsford Smith

Fr 9/12

10:20 am-1:40 pm

2 stops20h 20m

$930

San DiegoSydney

SAN - SYD

SANSYD

San Diego

Do 9/11

2:20 pm-7:20 am

1 stop24h 00m

Sydney Kingsford Smith

Fr 9/26

6:30 am-1:20 pm

2 stops23h 50m

$931

San DiegoSydney

SAN - SYD

SANSYD

San Diego

Do 8/28

2:21 pm-6:55 am

2 stops23h 34m

Sydney Kingsford Smith

Mi 9/10

10:20 am-3:01 pm

2 stops21h 41m

$945

San DiegoSydney

SAN - SYD

SANSYD

San Diego

Di 12/2

10:00 am-8:30 am

1 stop27h 30m

Sydney Kingsford Smith

Sa 12/20

2:15 pm-3:25 pm

1 stop20h 10m

$951

San DiegoSydney

SAN - SYD

SANSYD

San Diego

Di 12/2

10:00 am-8:30 am

1 stop27h 30m

Sydney Kingsford Smith

Sa 12/20

10:40 am-4:07 pm

2 stops24h 27m

$955

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 San Diego 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 San Diego and Sydney?

What is the cheapest month to fly to Sydney?

In general, August is the cheapest month to fly from San Diego to Sydney. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $952. If you are unable to visit Sydney during the month of August, then departing from San Diego during the month September is also very affordable. Most momondo users find prices during this month for around $979.

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

The cheapest day to depart from San Diego to Sydney is on a Monday when prices can be found for as low as $1,157. The most expensive day to fly to Sydney is Saturday, with ticket prices averaging around $1,453.

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 at noon. momondo users have found flights departing from San Diego to Sydney at noon for as low as $1,128. 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 in the afternoon, with an average ticket price of $1,286. Departure times in the afternoon 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 San Diego when booking weeks ahead of your departure date. In general, you can expect to find flights to Sydney for around $1,109 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Sydney from San Diego for as low as $953 on momondo.

Can stopping save me money on San Diego to Sydney flights?

You could potentially save up to 15% on your flight if you consider stops on a San Diego to Sydney flight.

How have San Diego to Sydney flight prices changed over time?

As of August 2025, prices for San Diego to Sydney flights are approximately 26% cheaper when compared to flights at the same time last year.

When to book flights from San Diego to Sydney

Are you open to changing your travel dates? Check out the ideal times to fly from San Diego to Sydney according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap San Diego to Sydney (SAN to SYD) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from San Diego to Sydney

Best Price Found

$431

Fastest flight time

17h 25m

Direct flights

None

Airports in Sydney

1 airport
The best one-way flight to Sydney from San Diego in the past 72 hours is $431. The best round-trip flight deal from San Diego to Sydney found on momondo in the last 72 hours is $868.
The fastest flight from San Diego to Sydney takes 17h 25m
There are no direct flights from San Diego to Sydney. Popular non-direct route for this connection is San Diego Airport - Sydney Kingsford Smith Airport.
There is 1 airport near Sydney: Sydney Kingsford Smith (SYD)
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  • How far is San Diego to Sydney Kingsford Smith by plane?

    Sydney Kingsford Smith is 7507.7 mi away from San Diego. In terms of flight time, this usually takes a little over 20h 06m.

  • When did momondo last update prices for flights from San Diego Airport to Sydney Kingsford Smith Airport?

    Prices for flights from San Diego Airport to Sydney Kingsford Smith Airport refresh daily.

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

  • How old do you have to be to fly from San Diego Airport to Sydney Kingsford Smith Airport?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from San Diego 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 San Diego to Sydney?

Best airlines flying from San Diego to Sydney

Compare and see reviews for airlines that fly from San Diego to Sydney with momondo
Airline
Rating
Free Cancellation
Price
Alaska AirlinesPriceFrom $748Free CancellationRating
8.0
10,000 reviews
Search Alaska Airlines flights
Air CanadaPriceFrom $779Free CancellationRating
7.1
9,992 reviews
Search Air Canada flights
American AirlinesPriceFrom $845Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
United AirlinesPriceFrom $899Free CancellationRating
7.4
8,925 reviews
Search United Airlines flights
DeltaPriceFrom $950Free CancellationRating
8.0
7,981 reviews
Search Delta flights
Hawaiian AirlinesPriceFrom $1,138Free CancellationRating
7.8
2,664 reviews
Search Hawaiian Airlines 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
Coogee
Lithgow
Penrith
Manly
Charlestown
Swansea
Leura
Terrigal

Why use momondo?

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

It is quick and easy to find San Diego 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 San Diego to Sydney with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to Sydney from San Diego with this policy.

How can momondo help me find flights from San Diego to Sydney?

Once you have performed a search for San Diego 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 San Diego to Sydney right now. Can momondo alert me if prices change?

Yes. momondo can track prices for San Diego to Sydney flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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