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Cheap flights from Hong Kong to Sydney

HKG — SYD
11 Oct — 18 Oct1
1 adult
1 adult, Economy

Cheapflights Tip: The best prices from Hong Kong Intl to Sydney Kingsford Smith are usually found in August or June, booked 80 days in advance, depart on a Tuesday or Thursday and return on a Monday

Cheap flight deals from Hong Kong to Sydney

Discover tips and strategies to find the most affordable flight options for your journey from Hong Kong (HKG) to Sydney (SYD). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 11 September 2025.

Popular in

January

Cheapest in

August

Average price

C$ 1,038

Good round-trip deal

C$ 999 or less

Good one-way deal

C$ 745 or less
Highest demand for flights based on searches. 19% potential increase in price (C$ 389 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease (C$ 71 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Price to beat on a round-trip flight from Hong Kong Intl to Sydney Kingsford Smith.
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Price to beat on a one-way flight from Hong Kong Intl to Sydney Kingsford Smith.
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Best time to book a flight from Hong Kong to Sydney

Have a flexible travel schedule? Discover the best time to fly to Sydney from Hong Kong with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Hong Kong to Sydney

How far ahead should I book a flight from Hong Kong to Sydney?

Use this chart to determine the optimal time to book a round-trip flight from Hong Kong to Sydney. Price data was last updated on 29 August 2025.

Booking 80 days in advance of your planned departure date is, on average, the best time to get cheap flights from Hong Kong to Sydney. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from Hong Kong to Sydney?

Currently, February is the cheapest month in which you can book a flight from Hong Kong to Sydney (average of C$ 1,326). Flying from Hong Kong to Sydney in December is currently the most expensive (average of C$ 1,881). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from HKG to SYD?

Find hourly flight availability from Hong Kong to Sydney. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 11 September 2025.

When flying from Hong Kong to Sydney, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Reviews of airlines servicing Sydney

Get insights into the airlines that provide service to Sydney. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Sydney. Reviews last updated 11 September 2025.
See what other customers who have flown with Cathay Pacific from Hong Kong to Sydney have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Cathay Pacific
7.6
Good
993 reviews
Check prices

Boarding

7.9

Crew

8.1

Entertainment

7.8

Overall

7.6

Comfort

7.6

Food

7.3

Reviews

1 / 20
10.0
Excellent

anish,Aug 2025

HKG - KTM

Journey was way better than on the airbus from Toronto to Hongkong , as the economy seats were better .
Cathay Pacific
7.6
Good
993 reviews
Cathay Pacific
7.6
Good
993 reviews
Check prices

Boarding

7.9

Crew

8.1

Entertainment

7.8

Overall

7.6

Comfort

7.6

Food

7.3

Reviews

1 / 20
10.0
Excellent

anish,Aug 2025

HKG - KTM

Journey was way better than on the airbus from Toronto to Hongkong , as the economy seats were better .

Related info for your journey

Find useful and relevant information for your journey from Hong Kong to Sydney. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How popular is this Hong Kong to Sydney flight route?

    This flight path from Hong Kong Intl to Sydney Kingsford Smith was viewed by 14 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

  • What are the cheapest airlines flying from Hong Kong to Sydney round-trip?

    Hong Kong Airlines, at C$ 636, was found to be the cheapest airline from Hong Kong to Sydney. An alternate airline flying to your destination would be Cathay Pacific. Hong Kong Airlines is 43% cheaper than the average price of flights available within the next 90 days to this destination.

  • What are the most reliable airlines from Hong Kong to Sydney?

    Before booking your flight to Sydney from Hong Kong, check out the most reliable airlines to get you to your destination on time: MIAT Mongolian (51%), Finnair (48%), British Airways( 48%).

  • Can I find deals for flights from Hong Kong to Sydney that include hotel bookings?

    Yes. In addition to deals on Hong Kong to Sydney flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Hong Kong to Sydney?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Hong Kong to Sydney.

  • Can I find deals for business class flights from Hong Kong to Sydney?

    Yes. Cheapflights offers flight deals from Hong Kong to Sydney by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Hong Kong to Sydney?

    Currently, February is the cheapest month in which you can book a flight from Hong Kong to Sydney (average of C$ 1,326). Flying from Hong Kong to Sydney in December is currently the most expensive (average of C$ 1,881). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Travelling to a place near Sydney?

Book flights to Sydney if you plan to visit one of these locations
Parramatta
Penrith

Browse thousands of different options on Cheapflights for your next trip

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Top 2 airlines flying from Hong Kong to Sydney

Discover the top 2 airlines that operate flights from Hong Kong to Sydney. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 629,999 searches. Data last updated 11 September 2025.
AirlineCheapestAverageFlexibilityOn-time
Hong Kong AirlinesCheapestC$ 636AverageC$ 842FlexibilityNo cancel feeOn-time65%
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Cathay PacificCheapestC$ 857AverageC$ 1,076FlexibilityNo cancel feeOn-time72%
Search Cathay Pacific flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Hong Kong to Sydney?

Deals for Hong Kong to Sydney flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.

Why should you use Cheapflights to find cheap flight tickets from Hong Kong to Sydney?

Cheapflights simply makes it quick and affordable to book flights from Hong Kong to Sydney by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

Can Cheapflights find flights from Hong Kong to Sydney with no change fees?

Need flexible booking options for your flight to Sydney from Hong Kong? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

Can Cheapflights notify me if prices for flights from Hong Kong to Sydney become cheaper?

Of course! You can now track prices for flights from Hong Kong to Sydney and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

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