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Cheap flights from San Francisco to Sydney

SFO — SYD
11 Oct — 18 Oct1
1 adult
1 adult, Economy

Cheap flight deals from San Francisco to Sydney

Discover tips and strategies to find the most affordable flight options for your journey from San Francisco (SFO) 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 11 September 2025.

Popular in

December

Cheapest in

February

Average price

C$ 1,584

Good one-way deal

C$ 2,286 or less
Highest demand for flights based on searches. 12% potential increase in price (C$ 333 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease (C$ 81 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Price to beat on a one-way flight from San Francisco to Sydney Kingsford Smith.
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Best time to book a flight from San Francisco to Sydney

Have a flexible travel schedule? Discover the best time to fly to Sydney from San Francisco 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 Francisco to Sydney

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

Use this chart to determine the optimal time to book a round-trip flight from San Francisco to Sydney. Price data was last updated on 29 August 2025.

To ensure you get the cheapest price possible for a flight from San Francisco to Sydney, you should look to book at least 43 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

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

Currently, February is the cheapest month in which you can book a flight from San Francisco to Sydney (average of C$ 1,326). Flying from San Francisco to Sydney in December is currently the most expensive (average of C$ 1,881). 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 SFO to SYD?

Find hourly flight availability from San Francisco 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 11 September 2025.

A simple way to save on the total cost of your ticket is to fly from San Francisco to Sydney at noon. If you’re flexible enough to do this you can expect to save up to 28% on your trip compared to booking a flight in the afternoon.

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 11 September 2025.
See what other customers who have flown with United Airlines from San Francisco to Sydney have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
8,937 reviews
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Food

6.6

Boarding

7.7

Overall

7.4

Entertainment

7.1

Crew

8.1

Comfort

7.3

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??
United Airlines
7.4
Good
8,937 reviews
United Airlines
7.4
Good
8,937 reviews
Check prices

Food

6.6

Boarding

7.7

Overall

7.4

Entertainment

7.1

Crew

8.1

Comfort

7.3

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 Francisco to Sydney. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How popular is this San Francisco to Sydney flight route?

    The San Francisco to Sydney Kingsford Smith flight path was viewed by 11 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

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

    Currently priced at C$ 1,188, United Airlines will fly you from San Francisco to Sydney and back. In addition to United Airlines, many other airlines offer competitively priced options for your trip. Users have found that United Airlines is 27% cheaper than the other options available to this destination.

  • What are the most reliable airlines from San Francisco to Sydney?

    No one likes to see their flight delayed. When booking a flight from San Francisco to Sydney consider choosing Alaska Airlines (73%), American Airlines (71%) or Qantas Airways (69%) as they are the most reliable in getting you off to your destination on time.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from San Francisco 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 Francisco to Sydney?

    Currently, February is the cheapest month in which you can book a flight from San Francisco to Sydney (average of C$ 1,326). Flying from San Francisco to Sydney in December is currently the most expensive (average of C$ 1,881). 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
Penrith

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Alternative routes for San Francisco to Sydney

See prices for flight routes from nearby airports that may be better suited for you.
Los Angeles to Sydney flights

Top airline flying from San Francisco to Sydney

Discover the top airline that operate flights from San Francisco 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 629,999 searches. Data last updated 11 September 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapestC$ 1,188AverageC$ 1,725FlexibilityNo cancel feeOn-time69%
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Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

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

Deals for San Francisco to Sydney flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.

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

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Sydney from San Francisco.

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

Certainly. Search results for flights to Sydney from San Francisco 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 Francisco to Sydney become cheaper?

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Sydney from San Francisco today and book when prices fit your budget.

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