Cheap flights from San Diego to Sydney from $841

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 19/3. Fares are subject to change and may not be available on all flights or dates of travel.
SAN — SYD
6 Jan — 13 Jan1
1 adult
1 adult, Economy, 0 bags

Cheapflights Tip: The best prices from San Diego to Sydney Kingsford Smith are usually found in August or September, booked 56 days in advance, depart on a Monday or Tuesday and return on a Monday

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 7 December 2025.

Tue 30/1206:15SAN - SYD
2 stops29h 05mUnited Airlines
Sun 11/111:20SYD - SAN
2 stops25h 08mUnited Airlines
Deal found 6/12$2,206
Tue 23/1219:55SAN - SYD
1 stop39h 25mUnited Airlines
Sat 27/1212:10SYD - SAN
1 stop18h 05mUnited Airlines
Deal found 7/12$2,277
Sat 27/1206:15SAN - SYD
1 stop32h 00mUnited Airlines
Wed 31/1212:10SYD - SAN
1 stop17h 33mUnited Airlines
Deal found 5/12$2,302
Fri 12/1212:45SAN - SYD
2 stops31h 30mMultiple Airlines
Sat 24/106:20SYD - SAN
2 stops24h 43mMultiple Airlines
Deal found 5/12$2,361
Wed 10/1212:43SAN - SYD
2 stops23h 42mMultiple Airlines
Fri 12/1221:40SYD - SAN
1 stop17h 30mMultiple Airlines
Deal found 7/12$2,372
Wed 10/1211:02SAN - SYD
2 stops24h 18mUnited Airlines
Fri 12/1213:00SYD - SAN
2 stops40h 40mUnited Airlines
Deal found 6/12$2,402
Fri 12/1220:40SAN - SYD
1 stop17h 25mUnited Airlines
Sat 24/114:00SYD - SAN
2 stops24h 54mUnited Airlines
Deal found 5/12$2,493
Wed 24/1216:00SAN - SYD
1 stop22h 15mUnited Airlines
Wed 31/1211:20SYD - SAN
1 stop18h 10mUnited Airlines
Deal found 5/12$2,548
Wed 24/1216:00SAN - SYD
1 stop19h 20mUnited Airlines
Tue 6/112:10SYD - SAN
1 stop21h 42mUnited Airlines
Deal found 7/12$2,549

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 7 December 2025.

Round-trip from

$1,369

One-way from

$841

Popular in

January

Cheapest in

August

Average price

$1,774
Air Canada
  • Air Canada
  • 10/2-24/2
  • 2 total stops
  • 40h 13m total
  • San Diego to Sydney
Air Canada
  • Air Canada
  • 19/3
  • 1 total stop
  • 25h 50m total
  • San Diego to Sydney
Highest demand for flights based on searches. 9% potential increase in price ($268 potential increase over avg. return price).
Cheapest flight prices on average. 2% potential price decrease ($65 potential savings vs. average return price).
Average for round-trip flights in December 2025

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 7 December 2025.
Use the filters below to find and compare flights from San Diego to Sydney that are best for you.

Fly from

San Diego

Fly to

Sydney

Route

Depart

Return

Price

San DiegoSydney

SAN - SYD

SANSYD

San Diego

Tue 24/2

12:45-09:35

1 stop25h 50m

Sydney Kingsford Smith

Sun 8/3

08:00-11:03

2 stops22h 03m

$1,393

San DiegoSydney

SAN - SYD

SANSYD

San Diego

Tue 24/2

18:05-14:25

2 stops25h 20m

Sydney Kingsford Smith

Sun 8/3

08:00-11:03

2 stops22h 03m

$1,436

San DiegoSydney

SAN - SYD

SANSYD

San Diego

Tue 27/1

18:05-20:45

2 stops31h 40m

Sydney Kingsford Smith

Wed 11/2

11:20-12:03

1 stop19h 43m

$1,488

San DiegoSydney

SAN - SYD

SANSYD

San Diego

Thu 30/4

18:10-07:20

1 stop20h 10m

Sydney Kingsford Smith

Thu 14/5

06:30-12:02

2 stops22h 32m

$1,521

San DiegoSydney

SAN - SYD

SANSYD

San Diego

Sat 7/2

18:05-16:40

2 stops27h 35m

Sydney Kingsford Smith

Wed 11/2

11:20-12:03

1 stop19h 43m

$1,607

San DiegoSydney

SAN - SYD

SANSYD

San Diego

Fri 6/2

18:05-18:05

2 stops29h 00m

Sydney Kingsford Smith

Sun 15/2

19:15-12:03

2 stops35h 48m

$1,664

San DiegoSydney

SAN - SYD

SANSYD

San Diego

Sun 1/3

15:15-06:50

1 stop20h 35m

Sydney Kingsford Smith

Wed 18/3

09:40-09:17

1 stop17h 37m

$1,675

San DiegoSydney

SAN - SYD

SANSYD

San Diego

Wed 29/4

10:00-06:35

1 stop27h 35m

Sydney Kingsford Smith

Mon 11/5

09:25-09:17

1 stop16h 52m

$1,675

San DiegoSydney

SAN - SYD

SANSYD

San Diego

Sun 1/3

18:05-09:35

1 stop20h 30m

Sydney Kingsford Smith

Thu 12/3

10:25-12:03

1 stop19h 38m

$1,690

San DiegoSydney

SAN - SYD

SANSYD

San Diego

Thu 19/3

12:45-08:35

1 stop25h 50m

$841

Flights are sorted by cheapest return flights first.

Deals found on 6/12

Showing 1-10 of 19 results
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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 5 December 2025.

Booking 56 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, September is the cheapest month in which you can book a flight from San Diego to Sydney (average of $798). Flying from San Diego to Sydney in January is currently the most expensive (average of $1,589). 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.

Reviews of airlines servicing Sydney

Get insights into the airlines that provide service to Sydney. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Sydney. Reviews last updated 7 December 2025.
Get a feel of what it's like to fly with United Airlines from San Diego to Sydney by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Boarding

7.7

Overall

7.4

Comfort

7.3

Food

6.6

Entertainment

7.1

Crew

8.1

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??

Boarding

7.7

Overall

7.4

Comfort

7.3

Food

6.6

Entertainment

7.1

Crew

8.1

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??

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 25h 50m. Air Canada provides one of the quickest options available for as low as $1,393. San Diego and Sydney are separated by a distance of 12086 km.

  • What is the cheapest airline to fly from San Diego to Sydney round-trip?

    Cheapflights users have booked flights from San Diego to Sydney round-trip from $1,096. You may be able to fly from San Diego to Sydney for 33% less than the average price by searching for this airline.

  • 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, September is the cheapest month in which you can book a flight from San Diego to Sydney (average of $798). Flying from San Diego to Sydney in January is currently the most expensive (average of $1,589). 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
Katoomba
Penrith
Terrigal
Manly
Randwick
Lithgow
Coogee
Leura
Bondi Beach
Cronulla

Browse thousands of different options on Cheapflights for your next trip

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Top airline flying from San Diego to Sydney

Discover the top airline that operate flights from San Diego to Sydney. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 647,157 searches. Data last updated 7 December 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$1,096Average$1,457FlexibilityNo cancel feeOn-time69%
Search United Airlines flights

Fly with Cheapflights

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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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