Cheap flights from Hong Kong to Sydney from $451

The month of August is, on average, the cheapest month to fly to Sydney from Hong Kong, with most prices found around $867. If you aren’t able to travel to Sydney during the month of August, then flying in October is also cheap. Prices for this month can be found on momondo for an average of $888.

Our data shows that Sunday is the least expensive day to fly to Sydney. Tickets to fly out on this day can be as low as $961. The most expensive day to fly to Sydney is Friday, with ticket prices averaging around $1,106.

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 $1,009. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. If you have a flexible travel schedule, then try to avoid flying in the morning when prices are $1,325 on average. Flights to Sydney from Hong Kong in the morning are generally more expensive because this time of day is more convenient for travellers’ schedules.

Fly from Hong Kong Intl to Sydney Kingsford Smith for the best Hong Kong - 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 $1,048 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 Hong Kong for as low as $853 on momondo.

There are 3 cabin classes available to choose from on Hong Kong to Sydney Kingsford Smith flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

China Eastern is the most popular carrier operating from Hong Kong to Sydney Kingsford Smith

Cathay Pacific, Qantas Airways and Hong Kong Airlines are the top three most popular airlines that fly to Sydney from Hong Kong according to our data. Cathay Pacific is the first choice among our users, with 46% of people opting to fly with this airline when travelling 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 33% 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 124 minutes.

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

Monday is statistically the day of the week that experiences the fewest 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 fewest delays on this route over the last 12 months, with about 19% of their flights experiencing any sort of delay.

23 flights are operational daily from Hong Kong to Sydney as of March 2026. The most popular departure time for this route is 19:00, with 85% of flights per day taking off in the evening.

As of March 2026, 163 flights take off from Hong Kong and land in Sydney each week. The most common flight departure day for this route is Fri, with 17% of weekly flights taking off on this day.