Cheap flights from Sydney to San Diego from $637

The month of March is, on average, the cheapest month to fly to San Diego from Sydney, with most prices found around $1,408. If you’re not able to fly to San Diego in March, then November is your next best option. Flight prices from Sydney to San Diego during November average around $1,415.

You are more likely to see cheaper flights to San Diego from Sydney when booking weeks ahead of your departure date. In general, you can expect to find flights to San Diego for around $1,552 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to San Diego from Sydney for as low as $1,328 on momondo.

You could potentially save up to 32% on your flight if you consider stops on a Sydney to San Diego flight.

As of September 2026, prices for Sydney to San Diego flights are approximately 184% more expensive when compared to flights at the same time last year.

Singapore Airlines, United Airlines, and Delta are the most popular carriers operating from Sydney Kingsford Smith to San Diego

United Airlines, Air Canada and Alaska Airlines are the top three most popular airlines that fly to San Diego from Sydney according to our data. United Airlines is the first choice among our users, with 62% of people opting to fly with this airline when travelling to San Diego. Keep in mind that there are 5 different airlines that fly to San Diego on a routine basis, so you have a few additional options to choose from.

Los Angeles (LAX) was the most common stop: 40% of momondo users choosing one-stop flights on this route connected there.

Flights via San Francisco (SFO) offer the lowest average return price of $1,688.

Flights connecting via San Francisco (SFO) have the shortest average one-way travel time: 17h 19m.

Vancouver (YVR) has the shortest average stopover time for this route: 2h 26m.