HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Sydney

$452+ Cheap flights from San Diego (SAN) to Sydney (SYD)

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 11/18. Fares are subject to change and may not be available on all flights or dates of travel.
SAN — SYD
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from San Diego to Sydney with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

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 Sunday and return on a Wednesday

Cheap 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 September 11, 2025.

Round-trip from

$867
(Kiwi.com)

One-way from

$452
(Air Canada)

Popular in

January

Cheapest in

August

Average price

$981
From San Diego to Sydney Kingsford Smith
Search Deals
One-way flight from San Diego to Sydney Kingsford Smith
Search Deals
Highest demand for flights based on searches. 6% potential increase in price ($74 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($30 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in September 2025
Search Deals

Find flight deals from San Diego to Sydney

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 September 11, 2025.

This Kiwi.com deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/165:55 pmSAN - SYD
1 stop27h 45mMultiple Airlines
Wed 10/225:20 pmSYD - SAN
2 stops21h 09mMultiple Airlines
Deal found 9/10$867
This Air Canada deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/46:10 pmSAN - SYD
1 stop20h 25mAir Canada
Mon 11/1011:20 amSYD - SAN
1 stop25h 04mAir Canada
Deal found 9/9$869
This Air Canada deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/92:20 pmSAN - SYD
1 stop24h 00mAir Canada
Tue 9/169:20 amSYD - SAN
1 stop21h 00mAir Canada
Deal found 9/9$870
This Air Canada deal was found by Cheapflights users on 9/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/46:10 pmSAN - SYD
1 stop20h 25mAir Canada
Tue 11/258:30 amSYD - SAN
2 stops22h 33mAir Canada
Deal found 9/8$884
This Air Canada deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/254:40 pmSAN - SYD
2 stops35h 45mAir Canada
Sat 11/110:20 amSYD - SAN
1 stop25h 04mAir Canada
Deal found 9/10$889
This Air Canada deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/92:20 pmSAN - SYD
2 stops28h 40mMultiple Airlines
Tue 9/169:20 amSYD - SAN
1 stop21h 00mMultiple Airlines
Deal found 9/9$927
This Air Canada deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/216:10 pmSAN - SYD
1 stop20h 25mAir Canada
Mon 12/17:15 pmSYD - SAN
2 stops35h 48mAir Canada
Deal found 9/10$928
This Gotogate deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/116:10 pmSAN - SYD
2 stops30h 00mMultiple Airlines
Thu 11/2711:20 amSYD - SAN
1 stop25h 04mMultiple Airlines
Deal found 9/9$929
This Hawaiian Airlines deal was found by Cheapflights users on 9/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/129:00 amSAN - SYD
1 stop17h 45mHawaiian Airlines
Sun 9/149:40 pmSYD - SAN
1 stop26h 20mHawaiian Airlines
Deal found 9/8$930
This Alaska Airlines deal was found by Cheapflights users on 9/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/186:48 pmSAN - SYD
2 stops29h 57mAlaska Airlines
Tue 12/99:40 pmSYD - SAN
2 stops18h 37mAlaska Airlines
Deal found 9/8$935
This Alaska Airlines deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/255:13 pmSAN - SYD
2 stops31h 32mAlaska Airlines
Sun 12/149:40 pmSYD - SAN
1 stop17h 25mAlaska Airlines
Deal found 9/9$936

Cheapflights 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, Cheapflights users made 2,558,603 searches. Data last updated September 11, 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 11/18

6:48 pm-7:45 pm

2 stops29h 57m

Sydney Kingsford Smith

Tue 12/9

9:40 pm-9:17 pm

2 stops18h 37m

$935

San DiegoSydney

SAN - SYD

SANSYD

San Diego

Tue 11/25

5:13 pm-7:45 pm

2 stops31h 32m

Sydney Kingsford Smith

Sun 12/14

9:40 pm-8:05 pm

1 stop17h 25m

$936

San DiegoSydney

SAN - SYD

SANSYD

San Diego

Mon 11/10

4:25 pm-9:00 am

2 stops21h 35m

Sydney Kingsford Smith

Fri 11/21

11:20 am-3:19 pm

2 stops22h 59m

$939

San DiegoSydney

SAN - SYD

SANSYD

San Diego

Wed 11/19

10:09 am-7:25 am

2 stops26h 16m

Sydney Kingsford Smith

Sat 11/29

5:45 pm-9:52 pm

2 stops23h 07m

$941

San DiegoSydney

SAN - SYD

SANSYD

San Diego

Sat 11/29

7:50 pm-9:15 am

1 stop18h 25m

Sydney Kingsford Smith

Wed 12/17

12:10 pm-10:40 am

1 stop17h 30m

$951

San DiegoSydney

SAN - SYD

SANSYD

San Diego

Mon 12/8

4:04 pm-8:30 am

1 stop21h 26m

Sydney Kingsford Smith

Tue 1/13

2:15 pm-3:22 pm

1 stop20h 07m

$951

San DiegoSydney

SAN - SYD

SANSYD

San Diego

Fri 11/28

11:02 am-9:05 am

1 stop27h 03m

Sydney Kingsford Smith

Wed 12/17

12:10 pm-10:40 am

1 stop17h 30m

$951

San DiegoSydney

SAN - SYD

SANSYD

San Diego

Mon 11/24

5:55 pm-9:15 am

1 stop20h 20m

Sydney Kingsford Smith

Wed 12/17

12:10 pm-12:50 pm

1 stop19h 40m

$951

San DiegoSydney

SAN - SYD

SANSYD

San Diego

Thu 11/27

9:54 am-9:15 am

1 stop28h 21m

Sydney Kingsford Smith

Wed 12/17

12:10 pm-12:50 pm

1 stop19h 40m

$951

San DiegoSydney

SAN - SYD

SANSYD

San Diego

Tue 11/11

7:59 pm-8:30 am

1 stop17h 31m

Sydney Kingsford Smith

Wed 11/26

10:40 am-3:24 pm

1 stop23h 44m

$952

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/10

Showing 1-10 of 20 results
1
2

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 round-trip 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 round-trip flight from San Diego to Sydney. Price data was last updated on August 29, 2025.

The best time to book flights from San Diego to Sydney is 56 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

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

Currently, February is the cheapest month in which you can book a flight from San Diego to Sydney (average of $1,035). Flying from San Diego to Sydney in December is currently the most expensive (average of $1,626). 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.

What is the cheapest time of day to fly from SAN to SYD?

Find hourly flight availability from San Diego to Sydney. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 11, 2025.

When flying from San Diego to Sydney, the time of day you fly usually plays a role in the price. Save by searching for a flight at noon, which can drop the price by up to 13% versus a flight in the afternoon.

What is the cheapest day to fly from San Diego to Sydney?

Use this chart to determine the cheapest time to fly round-trip from San Diego to Sydney. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their San Diego to Sydney flight should consider departing on Friday mornings when fares are most often at their lowest. Thursday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

How much does it cost to fly round-trip from San Diego to Sydney?

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 September 11, 2025.
Read reviews from past customers who have flown Alaska Airlines, Delta, and Hawaiian Airlines from San Diego to Sydney. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.0

Food

7.1

Crew

8.5

Comfort

7.8

Overall

8.0

Boarding

8.1

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.0

Food

7.1

Crew

8.5

Comfort

7.8

Overall

8.0

Boarding

8.1

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
Delta
8.0
Very good
7,960 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.0

Food

7.1

Crew

8.5

Comfort

7.8

Overall

8.0

Boarding

8.1

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
Hawaiian Airlines
7.8
Good
2,723 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.0

Food

7.1

Crew

8.5

Comfort

7.8

Overall

8.0

Boarding

8.1

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
United Airlines
7.4
Good
8,937 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.0

Food

7.1

Crew

8.5

Comfort

7.8

Overall

8.0

Boarding

8.1

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
Air Canada
7.1
Good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.0

Food

7.1

Crew

8.5

Comfort

7.8

Overall

8.0

Boarding

8.1

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.

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?

    Airlines like Alaska Airlines, American Airlines, and United Airlines fly from San Diego to Sydney in about 18h 25m. The time it takes to get you to your destination can typically vary by up to 11h 32m. The distance from San Diego to Sydney is about 7510 mi. This flight may include one or multiple stops.

  • What are the cheapest airlines flying from San Diego to Sydney round-trip?

    Currently priced at $748, Alaska Airlines will fly you from San Diego to Sydney and back. In addition to Alaska Airlines, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Air Canada and American Airlines - these airlines can fly you to your destination from $779 and $845, respectively. These flights start at 32% lower than the current average price 3 months from now.

  • 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 vacation 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, February is the cheapest month in which you can book a flight from San Diego to Sydney (average of $1,035). Flying from San Diego to Sydney in December is currently the most expensive (average of $1,626). 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

Traveling to a place near Sydney?

Book flights to Sydney if you plan to visit one of these locations
Parramatta
Wollongong
Manly
Coogee

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for San Diego to Sydney

See prices for flight routes from nearby airports that may be better suited for you.
Los Angeles to Sydney flights
San Francisco to Sydney flights
Ontario to Sydney flights
Santa Ana to Sydney flights
San Jose to Sydney flights
Oakland to Sydney flights
Sacramento to Sydney flights
Long Beach to Sydney flights
Las Vegas to Sydney flights
Burbank to Sydney flights
Santa Rosa to Sydney flights
San Francisco to Coolangatta flights
Los Angeles to Coolangatta flights
Medford to Sydney flights
Fresno to Sydney flights
Reno to Sydney flights
San Luis Obispo to Sydney flights
San Jose to Coolangatta flights
Ontario to Coolangatta flights
Monterey to Sydney flights
San Francisco to Wagga Wagga flights
Palm Springs to Sydney flights
San Francisco to Armidale flights
San Diego to Coolangatta flights
Arcata to Sydney flights
San Francisco to Ballina flights
San Francisco to Albury flights
San Francisco to Tamworth flights
San Francisco to Port Macquarie flights
San Francisco to Lord Howe Island flights
San Francisco to Coffs Harbour flights

Top 6 airlines flying from San Diego to Sydney

Discover the top 6 airlines 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 2,558,603 searches. Data last updated September 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
Alaska AirlinesCheapest$748Average$1,304FlexibilityNo cancel feeOn-time75%
Air CanadaCheapest$779Average$996FlexibilityNo cancel feeOn-time67%
American AirlinesCheapest$845Average$939FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$900Average$1,038FlexibilityNo cancel feeOn-time69%
DeltaCheapest$949Average$1,111FlexibilityNo cancel feeOn-timeN/A
Hawaiian AirlinesCheapest$1,138Average$1,393FlexibilityNo cancel feeOn-time85%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.