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Cheap flights from San Diego to Sydney from $719

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/5. Fares are subject to change and may not be available on all flights or dates of travel.
SAN — SYD
27 Apr — 4 May1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from San Diego to Sydney

Enter your travel dates to find the best prices.

Cheapest flights from San Diego to Sydney
Explore the most affordable flight options available from San Diego to Sydney. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 28 March 2026.

Mon 11/512:30
SAN
-
SYD
1 stop25h 50m
Air Canada
Mon 18/509:20
SYD
-
SAN
1 stop19h 30m
Air Canada
Deal found 27/3$1,450
Sun 26/412:45
SAN
-
SYD
1 stop25h 35m
Air Canada
Tue 12/509:20
SYD
-
SAN
1 stop19h 30m
Air Canada
Deal found 25/3$1,462
Fri 1/516:55
SAN
-
SYD
1 stop21h 25m
Air Canada
Tue 12/509:20
SYD
-
SAN
1 stop23h 55m
Air Canada
Deal found 27/3$1,503
Sun 26/414:18
SAN
-
SYD
1 stop35h 32m
Multiple Airlines
Tue 12/520:45
SYD
-
SAN
1 stop26h 55m
Multiple Airlines
Deal found 27/3$1,514
Mon 1/616:55
SAN
-
SYD
2 stops26h 45m
Air Canada
Tue 9/607:30
SYD
-
SAN
2 stops21h 20m
Air Canada
Deal found 25/3$1,527
Wed 27/516:55
SAN
-
SYD
1 stop21h 25m
Air Canada
Thu 4/607:00
SYD
-
SAN
2 stops21h 50m
Air Canada
Deal found 27/3$1,538
Tue 22/916:55
SAN
-
SYD
1 stop21h 25m
Air Canada
Thu 1/1009:20
SYD
-
SAN
1 stop23h 52m
Air Canada
Deal found 26/3$1,542
Fri 29/512:30
SAN
-
SYD
1 stop25h 50m
Air Canada
Fri 5/609:20
SYD
-
SAN
1 stop23h 55m
Air Canada
Deal found 24/3$1,543

Find flight deals from San Diego to Sydney

Discover tips and strategies to find the most affordable flight options for your journey from San Diego (SAN) to Sydney (SYD). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 28 March 2026.

Round-trip from

$1,450

One-way from

$719

Popular in

January

Cheapest in

August

Average price

$1,893
Air Canada
  • Air Canada
  • 11/5-18/5
  • 2 total stops
  • 45h 20m total
  • San Diego to Sydney
Search Deals
9/5
  • 9/5
  • 2 total stops
  • 36h 25m total
  • San Diego to Sydney
Search Deals
Highest demand for flights based on searches. 9% potential increase in price ($270 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($62 potential savings vs. average return price).
Search Deals
Average for round-trip flights in March 2026
Search Deals

Cheapflights 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, Cheapflights users made 647,157 searches. Data last updated 28 March 2026.
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

Cheapest return flight

San DiegoSydney

SAN - SYD

SANSYD

San Diego

Fri 8/5

14:18-18:50

1 stop35h 32m

Sydney Kingsford Smith

Tue 12/5

20:45-06:40

1 stop26h 55m

$1,629
Fastest return journey

San DiegoSydney

SAN - SYD

SANSYD

San Diego

Mon 1/6

19:41-06:55

1 stop18h 14m

Sydney Kingsford Smith

Mon 29/6

10:20-14:08

1 stop20h 48m

$1,915

San DiegoSydney

SAN - SYD

SANSYD

San Diego

Mon 1/6

19:41-06:55

1 stop18h 14m

Sydney Kingsford Smith

Sat 15/8

09:30-17:26

1 stop24h 56m

$1,988

San DiegoSydney

SAN - SYD

SANSYD

San Diego

Thu 30/7

19:58-19:15

2 stops30h 17m

Sydney Kingsford Smith

Mon 31/8

15:00-19:00

3 stops45h 00m

$3,770

San DiegoSydney

SAN - SYD

SANSYD

San Diego

Tue 7/4

22:40-06:20

2 stops38h 40m

Sydney Kingsford Smith

Sat 2/5

08:55-16:28

2 stops48h 33m

$4,036

San DiegoSydney

SAN - SYD

SANSYD

San Diego

Tue 7/4

13:03-06:05

3 stops48h 02m

Sydney Kingsford Smith

Thu 7/5

14:35-14:55

2 stops41h 20m

$5,794

San DiegoSydney

SAN - SYD

SANSYD

San Diego

Mon 1/6

20:30-19:15

3 stops53h 45m

Sydney Kingsford Smith

Mon 29/6

11:00-10:08

2 stops40h 08m

$5,851

San DiegoSydney

SAN - SYD

SANSYD

San Diego

Sun 26/4

13:03-06:05

3 stops48h 02m

Sydney Kingsford Smith

Tue 12/5

14:35-20:43

3 stops47h 08m

$5,880

San DiegoSydney

SAN - SYD

SANSYD

San Diego

Wed 27/5

13:19-06:05

3 stops47h 46m

Sydney Kingsford Smith

Thu 4/6

14:35-17:50

2 stops44h 15m

$6,019
Cheapest one-way

San DiegoSydney

SAN - SYD

SANSYD

San Diego

Sat 9/5

06:25-11:50

2 stops36h 25m

$719

Flights are sorted by cheapest return flights first.

Deals found on 24/3

Showing 1-10 of 19 resultsSorted by cheapest first
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Best time to book a flight from San Diego to Sydney

Have a flexible travel schedule? Discover the best time to fly to Sydney from San Diego with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from San Diego to Sydney

How far ahead should I book a flight from San Diego to Sydney?

Use this chart to determine the optimal time to book a return flight from San Diego to Sydney. Price data was last updated on 13 March 2026.

Booking 39 days in advance of your planned departure date is, on average, the best time to get cheap flights from San Diego to Sydney. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from San Diego to Sydney?

Currently, April is the cheapest month in which you can book a flight from San Diego to Sydney (average of $347). Flying from San Diego to Sydney in January is currently the most expensive (average of $1,747). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

How much does it cost for a return flight from San Diego to Sydney?

Related info for your journey

Find useful and relevant information for your journey from San Diego to Sydney. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from San Diego to Sydney?

    A quick flight from San Diego to Sydney can take about 17h 28m. United Airlines provides one of the quickest options available for as low as $1,915. San Diego and Sydney are separated by a distance of 12086 km.

  • Can I find deals for flights from San Diego to Sydney that include hotel bookings?

    Yes. In addition to deals on San Diego to Sydney flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from San Diego to Sydney?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from San Diego to Sydney.

  • Can I find deals for business class flights from San Diego to Sydney?

    Yes. Cheapflights offers flight deals from San Diego to Sydney by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from San Diego to Sydney?

    Currently, April is the cheapest month in which you can book a flight from San Diego to Sydney (average of $347). Flying from San Diego to Sydney in January is currently the most expensive (average of $1,747). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Travelling to a place near Sydney?

Book flights to Sydney if you plan to visit one of these locations
Parramatta
Wollongong
Penrith
Terrigal
Lithgow
Katoomba
Manly
Bondi Beach
Coogee
Cronulla
Leura
Randwick

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How does Cheapflights help users find flights from San Diego to Sydney?

Cheapflights makes it easy to find San Diego to Sydney flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

Why should you use Cheapflights to find cheap flight tickets from San Diego to Sydney?

Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from San Diego to Sydney for you. Better yet — we are completely free to use.

Can Cheapflights find flights from San Diego to Sydney with no change fees?

Certainly. Search results for flights to Sydney from San Diego shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

Can Cheapflights notify me if prices for flights from San Diego to Sydney become cheaper?

Of course! You can now track prices for flights from San Diego to Sydney and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

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