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Cheap flights from San Diego to Sydney from $604

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 21/2. 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 return flights

Enter your travel dates to find the best prices.
Air Canada Logo
18:05 - 09:35SAN-SYD
20h 30m1 stop
Air Canada Logo
11:20 - 12:03SYD-SAN
19h 43m1 stop
$1,407Air Canada
Find Deal
Tue, 10 Feb - Tue, 24 Feb
Air Canada Logo
12:45 - 07:20SAN-SYD
25h 35m1 stop
Air Canada Logo
07:00 - 17:24SYD-SAN
27h 24m2 stops
$1,429Air Canada
Find Deal
Mon, 13 Apr - Mon, 20 Apr
Multiple Airlines Logo
12:45 - 07:20SAN-SYD
25h 35m1 stop
Multiple Airlines Logo
20:10 - 12:02SYD-SAN
32h 52m2 stops
$1,437Multiple Airlines
Find Deal
Sun, 10 May - Sat, 23 May
Multiple Airlines Logo
18:10 - 11:25SAN-SYD
24h 15m2 stops
Multiple Airlines Logo
07:00 - 12:04SYD-SAN
22h 04m2 stops
$1,449Multiple Airlines
Find Deal
Mon, 13 Apr - Mon, 20 Apr
Air Canada Logo
18:05 - 14:40SAN-SYD
25h 35m2 stops
Air Canada Logo
09:00 - 16:24SYD-SAN
26h 24m2 stops
$1,458Air Canada
Find Deal
Sun, 1 Mar - Sun, 8 Mar
Air Canada Logo
18:05 - 09:35SAN-SYD
20h 30m1 stop
Air Canada Logo
11:20 - 12:03SYD-SAN
19h 43m1 stop
$1,472Air Canada
Find Deal
Tue, 24 Feb - Fri, 27 Feb
Air Canada Logo
12:45 - 09:35SAN-SYD
25h 50m1 stop
Air Canada Logo
07:00 - 12:04SYD-SAN
22h 04m2 stops
$1,494Air Canada
Find Deal
Wed, 4 Mar - Thu, 16 Apr
Air Canada Logo
18:05 - 16:40SAN-SYD
27h 35m2 stops
Air Canada Logo
10:25 - 17:24SYD-SAN
24h 59m1 stop
$1,502Air Canada
Find Deal
Sun, 1 Mar - Thu, 12 Mar
Air Canada Logo
12:45 - 18:05SAN-SYD
34h 20m2 stops
Air Canada Logo
11:20 - 12:03SYD-SAN
19h 43m1 stop
$1,522Air Canada
Find Deal
Fri, 16 Jan - Sun, 25 Jan
Air Canada Logo
18:05 - 16:40SAN-SYD
27h 35m2 stops
Air Canada Logo
08:00 - 17:24SYD-SAN
27h 24m2 stops
$1,523Air Canada
Find Deal
Sun, 1 Mar - Thu, 12 Mar

Alaska Airlines flights from San Diego to Sydney

Our best Alaska Airlines deals on San Diego to Sydney flight tickets
Alaska Airlines
12 Feb
SAN19:22San Diego
29h 23m
2 stops
SYD19:45Sydney Kingsford Smith
1 Mar
SYD21:40Sydney Kingsford Smith
17h 39m
1 stop
SAN20:19San Diego
$1,794
Find similar
Alaska Airlines
15 Jan
SAN14:29San Diego
34h 16m
1 stop
SYD19:45Sydney Kingsford Smith
15 Feb
SYD21:40Sydney Kingsford Smith
17h 39m
1 stop
SAN20:19San Diego
$1,821
Find similar
Alaska Airlines
3 Dec
SAN17:00San Diego
31h 45m
1 stop
SYD19:45Sydney Kingsford Smith
9 Dec
SYD21:40Sydney Kingsford Smith
28h 20m
1 stop
SAN07:00San Diego
$1,845
Find similar

United Airlines flights from San Diego to Sydney

Our best United Airlines deals on San Diego to Sydney flight tickets
United Airlines
18 Jan
SAN19:52San Diego
18h 23m
1 stop
SYD09:15Sydney Kingsford Smith
1 Feb
SYD14:00Sydney Kingsford Smith
17h 49m
1 stop
SAN12:49San Diego
$1,703
Find similar
United Airlines
13 Apr
SAN13:48San Diego
24h 07m
1 stop
SYD06:55Sydney Kingsford Smith
20 Apr
SYD10:20Sydney Kingsford Smith
18h 27m
1 stop
SAN11:47San Diego
$1,719
Find similar
United Airlines
12 Feb
SAN18:10San Diego
19h 55m
1 stop
SYD09:05Sydney Kingsford Smith
1 Mar
SYD14:00Sydney Kingsford Smith
17h 39m
1 stop
SAN12:39San Diego
$1,796
Find similar

momondo Fare Finder

 
Customise 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 78,305 searches. Data last updated 25 November 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

Tue 10/2

18:05-09:35

1 stop20h 30m

Sydney Kingsford Smith

Tue 24/2

11:20-12:03

1 stop19h 43m

$1,407

San DiegoSydney

SAN - SYD

SANSYD

San Diego

Mon 13/4

12:45-07:20

1 stop25h 35m

Sydney Kingsford Smith

Mon 20/4

07:00-17:24

2 stops27h 24m

$1,429

San DiegoSydney

SAN - SYD

SANSYD

San Diego

Sun 10/5

12:45-07:20

1 stop25h 35m

Sydney Kingsford Smith

Sat 23/5

20:10-12:02

2 stops32h 52m

$1,437

San DiegoSydney

SAN - SYD

SANSYD

San Diego

Mon 13/4

18:10-11:25

2 stops24h 15m

Sydney Kingsford Smith

Mon 20/4

07:00-12:04

2 stops22h 04m

$1,449

San DiegoSydney

SAN - SYD

SANSYD

San Diego

Sun 1/3

18:05-14:40

2 stops25h 35m

Sydney Kingsford Smith

Sun 8/3

09:00-16:24

2 stops26h 24m

$1,458

San DiegoSydney

SAN - SYD

SANSYD

San Diego

Tue 24/2

18:05-09:35

1 stop20h 30m

Sydney Kingsford Smith

Fri 27/2

11:20-12:03

1 stop19h 43m

$1,472

San DiegoSydney

SAN - SYD

SANSYD

San Diego

Wed 4/3

12:45-09:35

1 stop25h 50m

Sydney Kingsford Smith

Thu 16/4

07:00-12:04

2 stops22h 04m

$1,494

San DiegoSydney

SAN - SYD

SANSYD

San Diego

Sun 1/3

18:05-16:40

2 stops27h 35m

Sydney Kingsford Smith

Thu 12/3

10:25-17:24

1 stop24h 59m

$1,502

San DiegoSydney

SAN - SYD

SANSYD

San Diego

Fri 16/1

12:45-18:05

2 stops34h 20m

Sydney Kingsford Smith

Sun 25/1

11:20-12:03

1 stop19h 43m

$1,522

San DiegoSydney

SAN - SYD

SANSYD

San Diego

Sun 1/3

18:05-16:40

2 stops27h 35m

Sydney Kingsford Smith

Thu 12/3

08:00-17:24

2 stops27h 24m

$1,523

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 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 cheapest month to fly to Sydney?

The month of August is, on average, the cheapest month to fly to Sydney from San Diego, with most prices found around $1,469. If you aren’t able to travel to Sydney during the month of August, then flying in September is also cheap. Prices for this month can be found on momondo for an average of $1,494.

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

Our data shows that Monday is the least expensive day to fly to Sydney. Tickets to fly out on this day can be as low as $1,726. The most expensive day to fly to Sydney is Saturday, with ticket prices averaging around $1,961.

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 morning. momondo users have found flights departing from San Diego to Sydney in the morning for as low as $1,693. 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 evening when prices are $1,853 on average. Flights to Sydney from San Diego in the evening 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 San Diego when booking weeks ahead of your departure date. In general, you can expect to find flights to Sydney for around $1,694 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 San Diego for as low as $1,446 on momondo.

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

You could potentially save up to 14% 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 November 2025, prices for San Diego to Sydney flights are approximately 31% 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 return 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

Direct flights

None
There are no direct flights from San Diego to Sydney. There are no popular flight routes from San Diego to Sydney.
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  • How far is San Diego to Sydney Kingsford Smith by plane?

    A flight from San Diego to Sydney Kingsford Smith will travel around 12082.4 km. Flights usually cover this in 17h 40m, depending on flying conditions and air traffic around both airports.

  • 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 are refreshed on a daily basis.

  • 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 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 San Diego Airport to Sydney Kingsford Smith Airport.

  • What documentation or ID do you need to fly to Sydney Kingsford Smith Airport?

    The necessary travel and health documents for your Sydney Kingsford Smith Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's licence and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted 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
United AirlinesPriceFrom $1,127Free cancellationRating
7.4
9,044 reviews
Search United Airlines flights

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
Cronulla
Randwick
Charlestown
Newport
Swansea

Why use momondo?

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

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Sydney from San Diego.

Can I find flights from San Diego to Sydney with flexible booking policies on momondo?

momondo does allow users to show only those flights to Sydney from San Diego which offer a flexible booking policy as well as other useful filters and features.

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?

Price alerts on flights to Sydney from San Diego are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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