Cheap flights from the United States to Sydney from $640

The month of February is, on average, the cheapest month to fly to Sydney from United States, with most prices found around $1,634. If you aren’t able to travel to Sydney during the month of February, then flying in March is also cheap. Prices for this month can be found on momondo for an average of $1,656.

Our data shows that Wednesday is the least expensive day to fly to Sydney. Tickets to fly out on this day can be as low as $1,387. The most expensive day to fly to Sydney is Thursday, with ticket prices averaging around $1,599.

Fly from Los Angeles to Sydney Kingsford Smith for the best United States - Sydney Kingsford Smith flight prices

You are more likely to see cheaper flights to Sydney from United States when booking weeks ahead of your departure date. In general, you can expect to find flights to Sydney for around $1,372 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 United States for as low as $1,288 on momondo.

There are 4 cabin classes available to choose from on United States to Sydney flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

You could potentially save up to 13% on your flight if you consider stops on a United States to Sydney flight.

United Airlines, Alaska Airlines, and Delta are the most popular carriers operating from United States to Sydney Kingsford Smith

Qantas Airways, Fiji Airways and United Airlines are the top three most popular airlines that fly to Sydney from United States according to our data. Qantas Airways is the first choice among our users, with 60% of people opting to fly with this airline when travelling to Sydney. Keep in mind that there are 9 different airlines that fly to Sydney on a routine basis, so you have a few additional options to choose from.

Historically, on average around 26% of flights between United States and Sydney have experienced a delay on any given week. The average delay length over the past 12 months has been 136 minutes.

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

Tuesday is statistically the day of the week that experiences the fewest delays on this flight route. Sunday has historically seen more delays on average compared to the rest of the week.

According to our data, American Airlines have had the fewest delays on this route over the last 12 months, with about 15% of their flights experiencing any sort of delay.

The number of flights available between United States and Sydney is 21 per day as of September 2026. The most frequent departure time is 22:00, with 100% of daily flights leaving in the evening.

As of September 2026, there are 149 flights per week flying from United States to Sydney. The most common day of the week flights depart is Mon, with 18% of flights taking off on this day.