Cheap flights from San Francisco to Sydney from $647

The month of March is, on average, the cheapest month to fly to Sydney from San Francisco, with most prices found around $1,503. If you aren’t able to travel to Sydney during the month of March, then flying in February is also cheap. Prices for this month can be found on momondo for an average of $1,513.

Our data shows that Tuesday is the least expensive day to fly to Sydney. Tickets to fly out on this day can be as low as $1,565. The most expensive day to fly to Sydney is Friday, with ticket prices averaging around $2,657.

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 $1,674 when searching weeks before you fly. 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 $1,547 on momondo.

There are 3 cabin classes available to choose from on San Francisco to Sydney flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

No. A direct flight is the cheapest option for a flight between San Francisco to Sydney.

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 34% of people opting to fly with this airline when travelling to Sydney. Keep in mind that there are 5 different airlines that fly to Sydney on a routine basis, so you have a few additional options to choose from.

Historically, on average around 21% 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 152 minutes.

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

Monday is statistically the day of the week that experiences the fewest 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 fewest 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: 64% of momondo users choosing one-stop flights on this route connected there.

Flights via Nadi (NAN) offer the lowest average return price of $1,302.

Flights connecting via Honolulu (HNL) have the shortest average one-way travel time: 17h 16m.

Honolulu (HNL) has the shortest average stopover time for this route: 2h 27m.

The number of flights available between San Francisco and Sydney is 5 per day as of May 2026. The most frequent departure time is 23:00, with 100% of daily flights leaving in the evening.

As of May 2026, 35 flights take off from San Francisco and land in Sydney each week. The most common flight departure day for this route is Mon, with 14% of weekly flights taking off on this day.