Cheap flights from San Francisco to Sydney from $437

In general, March is the cheapest month to fly from San Francisco to Sydney. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $1,073. If you are unable to visit Sydney during the month of March, then departing from San Francisco during the month September is also very affordable. Most momondo users find prices during this month for around $1,080.

The cheapest day to depart from San Francisco to Sydney is on a Sunday when prices can be found for as low as $1,243. The most expensive day to fly to Sydney is Monday, with ticket prices averaging around $1,346.

Fly from San Francisco to Sydney Kingsford Smith for the best San Francisco - Sydney Kingsford Smith flight prices

You are more likely to see cheaper flights to Sydney from San Francisco when booking weeks ahead of your departure date. In general, you can expect to find flights to Sydney for around $1,191 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Sydney from San Francisco for as low as $1,115 on momondo.

As of April 2026, prices for San Francisco to Sydney flights are approximately 11% cheaper when compared to flights at the same time last year.

Alaska Airlines is the most popular carrier operating from San Francisco to Sydney Kingsford Smith

United Airlines, Fiji Airways and Qantas Airways are the top three most popular airlines that fly to Sydney from San Francisco according to our data. United Airlines is the first choice among our users, with 47% of people opting to fly with this airline when traveling to Sydney. Keep in mind that there are 12 different airlines that fly to Sydney on a routine basis, so you have a few additional options to choose from.

Historically, on average around 19% of flights between San Francisco and Sydney have experienced a delay on any given week. The average delay length over the past 12 months has been 189 minutes.

Generally, flights departing in the evening tend to experience fewer delays. Flights at night have, in the past, seen delays more frequently in comparison.

Monday is statistically the day of the week which experiences the fewest number of delays on this flight route. Saturday has historically seen more delays on average compared to the rest of the week.

According to our data, Qantas Airways have had the least number of delays on this route over the last 12 months; with about 11% of their flights experiencing any sort of delay.

Nadi (NAN) was the most common stop: 36% of momondo users choosing 1-stop flights on this route connected there.

Flights via Hong Kong (HKG) offer the lowest average round-trip price of $994.

Flights connecting via Honolulu (HNL) have the shortest average one-way travel time: 17h 39m.

Honolulu (HNL) has the shortest average layover time for this route: 1h 40m.

6 flights are operational daily from San Francisco to Sydney as of April 2026. The most popular departure time for this route is 10:00PM, with 100% of flights per day taking off in the evening.

As of April 2026, 44 flights take off from San Francisco and land in Sydney each week. The most common flight departure day for this route is Tue, with 18% of weekly flights taking off on this day.