Cheap flights from the United States to Sydney from $371

In general, March is the cheapest month to fly from United States to Sydney. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $1,096. If you are unable to visit Sydney during the month of March, then departing from United States during the month April is also very affordable. Most momondo users find prices during this month for around $1,103.

The cheapest day to depart from United States to Sydney is on a Sunday when prices can be found for as low as $1,345. The most expensive day to fly to Sydney is Saturday, with ticket prices averaging around $1,823.

According to our data, the cheapest time of day to fly to Sydney is in the evening. momondo users have found flights departing from United States to Sydney in the evening for as low as $1,446. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights to Sydney are more costly in the afternoon, with an average ticket price of $1,777. Departure times in the afternoon fall within the peak daily travel times, which is why tickets can be more expensive.

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 $1,378 when searching weeks out. 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 $1,191 on momondo.

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

Qantas Airways, United Airlines and Fiji Airways 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 44% of people opting to fly with this airline when traveling to Sydney. Keep in mind that there are 19 different airlines that fly to Sydney on a routine basis, so you have a few additional options to choose from.

Historically, on average around 24% 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 143 minutes.

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

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

According to our data, American Airlines have had the least number of delays on this route over the last 12 months; with about 16% of their flights experiencing any sort of delay.

As of May 2026, there are 27 flights per day flying from United States to Sydney. The most common time of day flights depart is 10:00PM, with 100% of flights taking off in the evening.

194 flights are operational weekly from United States to Sydney as of May 2026. The most popular departure day for this route is Fri, with 15% of flights per week taking off on this day.