Cheap flights from Hong Kong to Sydney from $318

In general, March is the cheapest month to fly from Hong Kong to Sydney. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $616. If you are unable to visit Sydney during the month of March, then departing from Hong Kong during the month May is also very affordable. Most momondo users find prices during this month for around $630.

The cheapest day to depart from Hong Kong to Sydney is on a Wednesday when prices can be found for as low as $655. The most expensive day to fly to Sydney is Monday, with ticket prices averaging around $898.

According to our data, the cheapest time of day to fly to Sydney is in the evening. momondo users have found flights departing from Hong Kong to Sydney in the evening for as low as $726. 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 morning, with an average ticket price of $974. Departure times in the morning fall within the peak daily travel times, which is why tickets can be more expensive.

Fly from Hong Kong Intl to Sydney Kingsford Smith for the best Hong Kong Intl - Sydney Kingsford Smith flight prices

You are more likely to see cheaper flights to Sydney from Hong Kong when booking weeks ahead of your departure date. In general, you can expect to find flights to Sydney for around $759 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Sydney from Hong Kong for as low as $667 on momondo.

There are 3 cabin classes available to choose from on Hong Kong 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 55% on your flight if you consider stops on a Hong Kong to Sydney flight.

As of August 2026, prices for Hong Kong to Sydney flights are approximately 12% more expensive when compared to flights at the same time last year.

Cebu Pacific and Hainan Airlines are the most popular carriers operating from Hong Kong Intl to Sydney Kingsford Smith

Qantas Airways, Cathay Pacific and Hong Kong Airlines are the top three most popular airlines that fly to Sydney from Hong Kong according to our data. Qantas Airways is the first choice among our users, with 51% of people opting to fly with this airline when traveling to Sydney. Keep in mind that there are 3 different airlines that fly to Sydney on a routine basis, so you have a few additional options to choose from.

Historically, on average around 32% of flights between Hong Kong and Sydney have experienced a delay on any given week. The average delay length over the past 12 months has been 127 minutes.

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

Monday 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, Cathay Pacific have had the least number of delays on this route over the last 12 months; with about 20% of their flights experiencing any sort of delay.

25 flights are operational daily from Hong Kong to Sydney as of August 2026. The most popular departure time for this route is 7:00PM, with 69% of flights per day taking off in the evening.

As of August 2026, there are 178 flights per week flying from Hong Kong to Sydney. The most common day of the week flights depart is Thu, with 16% of flights taking off on this day.