$450 Find Cheap Flights from Hong Kong to Sydney – Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight to Sydney departing on 24/8. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
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Flight Deals

Cheap Flights from Hong Kong to Sydney

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights from Hong Kong to Sydney that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent return flight deals from Hong Kong to Sydney

Sun, 1 Nov - Sun, 8 Nov
Qantas Airways Logo
19:25 - 07:55
HKG
-
SYD
9h 30mdirect
Qantas Airways Logo
11:15 - 17:50
SYD
-
HKG
9h 35mdirect
$869Qantas Airways
Mon, 26 Oct - Wed, 28 Oct
Cathay Pacific Logo
23:55 - 12:00
HKG
-
SYD
9h 05mdirect
Cathay Pacific Logo
11:05 - 17:30
SYD
-
HKG
9h 25mdirect
$870Cathay Pacific
Thu, 20 Aug - Fri, 4 Sep
Vietnam Airlines Logo
14:30 - 12:15
HKG
-
SYD
19h 45m
1 stop
Vietnam Airlines Logo
10:15 - 17:25
SYD
-
HKG
33h 10m
1 stop
$870Vietnam Airlines
Mon, 26 Oct - Fri, 30 Oct
Qantas Airways Logo
19:25 - 07:55
HKG
-
SYD
9h 30mdirect
Qantas Airways Logo
11:15 - 17:50
SYD
-
HKG
9h 35mdirect
$870Qantas Airways
Mon, 24 Aug - Thu, 17 Sep
Multiple Airlines Logo
20:45 - 11:45
HKG
-
SYD
13h 00m
1 stop
Multiple Airlines Logo
13:00 - 16:00
SYD
-
HKG
29h 00m
2 stops
$870Multiple Airlines
Mon, 19 Oct - Fri, 30 Oct
Qantas Airways Logo
19:30 - 07:45
HKG
-
SYD
9h 15mdirect
Qantas Airways Logo
11:15 - 17:50
SYD
-
HKG
9h 35mdirect
$872Qantas Airways
Sun, 20 Sep - Sun, 27 Sep
Hong Kong Airlines Logo
22:05 - 09:45
HKG
-
SYD
9h 40mdirect
Hong Kong Airlines Logo
11:05 - 19:10
SYD
-
HKG
10h 05mdirect
$882Hong Kong Airlines
Tue, 15 Sep - Mon, 22 Feb
Hong Kong Airlines Logo
22:05 - 09:35
HKG
-
SYD
9h 30mdirect
Hong Kong Airlines Logo
12:35 - 19:30
SYD
-
HKG
9h 55mdirect
$888Hong Kong Airlines
Mon, 31 Aug - Fri, 4 Sep
Cathay Pacific Logo
19:05 - 06:10
HKG
-
SYD
9h 05mdirect
Cathay Pacific Logo
10:10 - 17:45
SYD
-
HKG
9h 35mdirect
$908Cathay Pacific
Wed, 18 Nov - Thu, 10 Dec
Cathay Pacific Logo
08:45 - 20:50
HKG
-
SYD
9h 05mdirect
Cathay Pacific Logo
08:45 - 15:05
SYD
-
HKG
9h 20mdirect
$909Cathay Pacific
Booking Insights

KAYAK's insights & trends for flights to Sydney

Get data-powered insights and trends into flights to Sydney to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest day to fly to Sydney?

The average price of all round-trip flights to Sydney clicked on KAYAK for each day over the last 12 months.

Based on KAYAK data, the cheapest day to fly to Sydney is Thursday where round-trip tickets can be as cheap as $953. On the other hand, the most expensive day to fly is Saturday, where round-trip prices are $1,242 on average.

What is the cheapest month to fly to Sydney?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights to Sydney, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights to Sydney is March, where tickets cost $880 on average for return flights. On the other hand, the most expensive months are January and July, where the average cost of tickets from Hong Kong is $1,372 and $1,342 respectively. For one-way flights, the best month to travel is November with an average price of $509.

What is the cheapest time of day to fly to Sydney?

The average price for all round-trip flights to Sydney depending on the time of departure, clicked by users on KAYAK in the last 2 weeks.

The cheapest time of day to fly to Sydney is generally at night, when round-trip flights cost $982 on average. The most expensive time of day to fly to Sydney is generally in the morning, which is peak travel time and where the average cost of a ticket is $1,472.

What is a good deal for flights to Sydney?

If you’re looking for cheap airfare to Sydney, 25% of our users found tickets to Sydney for the following prices or less: From Hong Kong $1,014 return.

How far in advance should I book a flight to Sydney?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights to Sydney, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price, you should book around 6 weeks before departure, which saves you about 13% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 8 weeks before departure.

Good to know

Low season

January

Cheapest flight

$450
Best time to beat the crowds but there is an average 26% increase in price.
Most popular time to fly (16% more expensive on average)
Flight from Hong Kong to Sydney

FAQs - booking Sydney flights

  • How far is Sydney Kingsford Smith Airport from central Sydney?

    Central Sydney is 7 km away from Sydney Kingsford Smith Airport.

  • What is the name of Sydney’s airport?

    Sydney is served by Sydney Kingsford Smith Airport, also commonly referred to as Kingsford Smith or Sydney. The airport code is SYD.

  • How much is a flight to Sydney?

    On average, a flight to Sydney costs $1,069. The cheapest price found on KAYAK in the last 2 weeks cost $517 and departed from Hong Kong Intl Airport.

  • How does KAYAK find such low prices on flights to Sydney?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights to Sydney.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket to Sydney?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Sydney is likely to change within 7 days, so travellers know whether to wait or book now.

  • What is the Hacker Fare option on flights to Sydney?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Sydney with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight to Sydney?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Sydney up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Top tips for finding cheap flights to Sydney

  • Looking for cheap airfare to Sydney? 25% of our users found return tickets to Sydney for the following prices or less: From Hong Kong $1,700
  • Enter your preferred departure airport and travel dates into the search form above to unlock the latest Sydney flight deals.

Reviews of the top 3 airlines flying from Hong Kong to Sydney

 
See real verified KAYAK customer reviews for airlines flying to Sydney. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline from Hong Kong to Sydney. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with to Sydney? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.6
Cathay PacificOverall score based on 1431 reviews
7.7Entertainment
7.3Food
7.5Comfort
7.9Boarding
8.1Crew
Airline reviews

It was a good experience except that the flight has been rescheduled, bit disappointed but it happens.

6.0 GoodMerylle, July 2026
HKG - YYZ
Read more Cathay Pacific reviews

It was a good experience except that the flight has been rescheduled, bit disappointed but it happens.

Everything was good; they still provided a sandwich snack. Good crew

My flight was delayed by 8 hours I arrived at airport 4hrs earlier but to see if they can reroute me to get my connecting flt to Hong Kong. They auto rebooked my flt. With no chance. Which I missed this entire reservation through kayak. My next flt they got me on was at 6 am. Misses an entire day of my trip abroad all my accommodations seat assignments were missed and missed adding my TSA precheck to my ticket as well as my vegan meal request so I didnt have meals on any of the flight....so not a comfortable experience. Please help me with accommodations upon my return.

The crew could have awaken me to eat dinner!! I was so waiting to order the braised duck breast and fell asleep b4 crew got to me to take order. When I awoke, lights were out and food had been served without me eating. I did love the apple juice!

Boarding was good and efficient, however since this was a late flight I spent most of the time sleeping so can't express any further opinions

Previous flight with Cathay from LAX was delayed thus missing this flight to KL by 12 hours. This in turn missed other travel arrangements from KL. They did provide overnight accommodation in Hong Kong.

The flight was delayed for over an hour, which made me worry about pets in cargo.

It was good, on time boarding. Have a good service. .

There is very little in the title" Premium" in the Economy experience with Cathay, Melbourne to Hong Kong. The seats are uncomfortable and the cabin with outdated 1990's decor and trim. The food service was sloppy and the leg room providing little to no advantage over regular economy seating. Infact, the Sunday flight was not fill occupancy and I would have done better saving the significant additional costs for the PREMIUM ticket and taken advantage of the seating. If you are a regular premium economy traveler of EMIRATES expecting the same experience on CATHAY, you will be disappointed. Emirates far superior.

The aircraft was slightly newer but the food was very bad. Bland and uninteresting. Nothing special at all.

From start to finish, every part of the experience was outstanding. The care and kindness shown to my 95-year-old mother was exceptional—truly 10 out of 10. From the assistance she received at Sydney Airport while boarding the plane to the help she was given when arriving at Wagga Wagga Airport, every staff member was friendly, professional, and genuinely caring. They made her feel comfortable, safe, and well looked after throughout her journey. A heartfelt thank you to everyone who helped make my mother's trip such a wonderful experience. Your compassion and dedication are greatly appreciated.

I think it is much better than the flight I flew from Sydney to Tokyo.

I missed my flight due to unforeseen circumstances It was, however , an excellent price !

We had a medical emergency, needing to get to an emergency room upon landing at LAX. I let the back flight attendants know the situation. One, David, contacted the pilot, who made arrangements for EMT's to be there when we got off the plane. They went above and beyond for us. We didn't have to go through customs, as a customs person came to us and checked us right at the exit of the jet way. Another wonderful woman, a United employee at LAX, perhaps a customer service liaison, took care of our luggage situation, as we weren't going to make our connection to Bozeman. When we came back to LAX to see when we could get a flight to Bozeman, the personnel are very accommodating and booked us on the next flight out, and assigned good seats. It was a horrible flight, physically, from Sydney to LAX, , but the professionalism of all involved was excellent! We are very grateful fir the way they all stepped in and helped during a very unpleasant medical situation. Thank you!!

PREMIUM ECONOMY - excellent !Brilliant new plane. Excellent tv catalogue. Good food. Good communication and service from all friend Australian crew. Good communication from captain. Best travel experience in years.

I couldn't hear all of the announcements. It was nice when they put them on the screen.

an hour late, then had to disembark on back stairs and take 4 flights up to get to main airport. No warning, and difficulty for those with canes and poor knees.

Well my expórtenle with Qantas it wasn’t that good KLM from Bs Aires was delay Santiago Chile Qantas QF 028 was still in the airport but the crew didn’t opened the door for me soo I lost my fly And I stuck in the airport 13 hrs waiting for next fly by Latam Arline My question is can I have my money back for business class

It was ok, the additional baggage charges were a bit excessive given winter is a time for skiing. To have to pay $600 extra for skis was tantamount to robbery. Airlines should consider sporting goods as baggage. Likewise, they should consider increasing the number of bags allowed on international flights to known ski destinations.

Couldn't access entertainment on app as said in an email

Our luggage broke and what we get back was only 26$ plus the transit in hongkong was terrible and the airline itself the screen wasn’t working but there was a proper seat space and the crew was nice and professional

speedy loading helpful staff. and clean. food is not that great

Departure date of the ticket was ONE WEEK LATER than I purchased it for. Total failure on trying to get it reissued for the date I was to fly on. Will NOT use Kayak next time due to this screw up on Kayak's part..

On-time takeoff and arrival Cabin crew very helpful, especially the crew manager (I think) (young gentleman with glass)

I cannot check in online , and not able to select my seat

Watch for "bait and switch" - cheap prices, but not obvious at all at point of purchase that there will be an undisclosed charge for baggage - and less obvious that you will have to purchase baggage at an eye-watering level. Better still, if you go this airline, leave your gear behind and buy a complete wardrobe when you arrive in country and still be ahead. The staff were very pleasant, both at counter staff level - they were clearly unnerved by having to charge - and on board.

No entertainment service which equates them with budget airlines. But their fare are regular airline fares. Aircraft are old and seats are worn.

The crews at check in counter are not professional, they are talking and playing around. Also no entertainment on the plane

2 failed landing attemps before going to Nagoya airport for refueling. After 3 hours of taxiing, we still needed 3 attemps before a succeeded landing (after the 5th attempt finally!). In total, 11 hours inside the plane instead of 4h30, and with only a crappy piece of bread to feed us. A shame.

Travelling to a place near Sydney?

Book flights to Sydney if you plan to visit one of these locations
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Everything you need to know for your flight to Sydney

Information on the airport you'll fly into in Sydney