Cheap flights from San Diego to Sydney from $565

In general, April is the cheapest month to fly from San Diego to Sydney. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $1,086. If you are unable to visit Sydney during the month of April, then departing from San Diego during the month July is also very affordable. Most momondo users find prices during this month for around $1,145.

You are more likely to see cheaper flights to Sydney from San Diego when booking weeks ahead of your departure date. In general, you can expect to find flights to Sydney for around $1,308 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Sydney from San Diego for as low as $1,126 on momondo.

You could potentially save up to 14% on your flight if you consider stops on a San Diego to Sydney flight.

As of November 2026, prices for San Diego to Sydney flights are approximately 18% cheaper when compared to flights at the same time last year.

Alaska Airlines, American Airlines, and Qantas Airways are the most popular carriers operating from San Diego to Sydney Kingsford Smith

United Airlines, Air Canada and Delta are the top three most popular airlines that fly to Sydney from San Diego according to our data. United Airlines is the first choice among our users, with 48% of people opting to fly with this airline when traveling to Sydney. Keep in mind that there are 4 different airlines that fly to Sydney on a routine basis, so you have a few additional options to choose from.

Los Angeles (LAX) was the most common stop: 71% of momondo users choosing 1-stop flights on this route connected there.

Flights via Vancouver (YVR) offer the lowest average round-trip price of $1,028.

Flights connecting via Los Angeles (LAX) have the shortest average one-way travel time: 17h 54m.

San Francisco (SFO) has the shortest average layover time for this route: 2h 00m.