$439 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 8/8. 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.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Sydney

 
These are the airlines KAYAK users have selected most often from within our search results for flights to Sydney, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results for flights to Sydney, as well as popular online travel agencies
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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

Tue, 7 Jul - Wed, 15 Jul
Multiple Airlines Logo
07:25 - 07:20
HKG
-
SYD
21h 55m
2 stops
Multiple Airlines Logo
13:00 - 19:45
SYD
-
HKG
32h 45m
1 stop
$917Multiple Airlines
Mon, 22 Jun - Wed, 8 Jul
Multiple Airlines Logo
07:40 - 19:20
HKG
-
SYD
33h 40m
2 stops
Multiple Airlines Logo
11:25 - 17:10
SYD
-
HKG
31h 45m
2 stops
$919Multiple Airlines
Tue, 25 Aug - Thu, 10 Sep
Multiple Airlines Logo
17:50 - 07:20
HKG
-
SYD
35h 30m
2 stops
Multiple Airlines Logo
20:35 - 19:45
SYD
-
HKG
25h 10m
1 stop
$920Multiple Airlines
Fri, 10 Jul - Thu, 30 Jul
Multiple Airlines Logo
16:05 - 14:05
HKG
-
SYD
20h 00m
1 stop
Multiple Airlines Logo
13:00 - 12:30
SYD
-
HKG
25h 30m
2 stops
$921Multiple Airlines
Wed, 8 Jul - Fri, 31 Jul
Multiple Airlines Logo
16:05 - 14:05
HKG
-
SYD
20h 00m
1 stop
Multiple Airlines Logo
13:00 - 12:55
SYD
-
HKG
25h 55m
2 stops
$923Multiple Airlines
Wed, 19 Aug - Wed, 26 Aug
Multiple Airlines Logo
07:40 - 19:20
HKG
-
SYD
33h 40m
2 stops
Multiple Airlines Logo
13:00 - 19:45
SYD
-
HKG
32h 45m
1 stop
$924Multiple Airlines
Tue, 1 Sep - Mon, 14 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
$926Vietnam Airlines
Tue, 23 Jun - Tue, 14 Jul
Multiple Airlines Logo
20:45 - 06:15
HKG
-
SYD
31h 30m
1 stop
Multiple Airlines Logo
21:00 - 15:00
SYD
-
HKG
20h 00m
1 stop
$927Multiple Airlines
Mon, 22 Jun - Wed, 8 Jul
Qantas Airways Logo
19:30 - 06:45
HKG
-
SYD
9h 15mdirect
Qantas Airways Logo
10:10 - 17:55
SYD
-
HKG
9h 45mdirect
$929Qantas Airways
Sat, 27 Jun - Sun, 12 Jul
Multiple Airlines Logo
16:40 - 10:10
HKG
-
SYD
39h 30m
2 stops
Multiple Airlines Logo
11:05 - 19:10
SYD
-
HKG
10h 05mdirect
$930Multiple Airlines
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 $947. On the other hand, the most expensive day to fly is Friday, where round-trip prices are $1,289 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 June, where tickets cost $332 on average for return flights. On the other hand, the most expensive months are February and December, where the average cost of tickets from Hong Kong is $688 and $635 respectively. For one-way flights, the best month to travel is May with an average price of $238.

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 $981 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 $1,382.

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 $947 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 15% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 8 weeks before departure.

Good to know

Low seasonJanuary
Cheapest flight$439
Best time to beat the crowds but there is an average 25% increase in price.
Most popular time to fly (18% 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 $904. The cheapest price found on KAYAK in the last 2 weeks cost $683 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 $863
  • 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 1371 reviews
7.9Boarding
8.1Crew
7.8Entertainment
7.6Comfort
7.3Food
Airline reviews

The service was better on this flight from the long haul one, but still very poor from The Cathay Pacific of the past.

4.0 OkayFadi, June 2026
HKG - BKK
Read more Cathay Pacific reviews

The service was better on this flight from the long haul one, but still very poor from The Cathay Pacific of the past.

Seat is too small. Food selection is limited and often ran out of selectable item.

The go to HK trip will easily giving jetlag, but coming back to Chicago has no jetlag because of the time taking off matter.

For an international flight, the service was average at best. It could have been significantly better, particularly with regard to the food quality and options. Additionally, having only two restrooms available for the entire Economy Class made the experience less comfortable and resulted in long wait times.

The staff from beginning to end we're friendly and helpful. The food and beverages were quite good (but see the comment below). I also liked their entertainment options, as we'll as their frequent attention to the airplane restrooms. Here are the reasons this is not a 5-star review: - You have to pay for WiFi on the plane unless you have some level of seat upgrade. - CP sent me a warning that the name I entered to book didn't match my passport. True, but the form for entering my name didn't allow for anything but a middle initial. This lead to a lot of chats, phone calls and stress before finding out at the ticket counter that it didn't matter. CP has modified their notice to now tell you this key bit of info. - After consuming a chicken dinner they offered (Kathmandu to Hong Kong), I developed symptoms entirely consistent with salmonella, beginning about 6 hours later. There were some odd things about the serving of this meal, too. Our row was the last one served, and we were given a tray without the entree on it. About 10 minutes later the stewardess came by and said they only had one chicken meal left. My seat mate and I decided he would have the lamb and I would take the chicken. I think I lost. I suspect that this entree was left over from an earlier flight and they were scrambling to get the last row fed. My seat mate and I were the last two to receive our entrees. I am not accusing CP of giving me a contaminated meal - just that the onset and progress of symptoms closely match those of salmonella poisoning. I opted out of the first meal on the next flight 13 hours later, but was fine after that.

Good good, good seat, good entertainment system. Customer service is good but can be more polished if CX charges a premium price.

Frequent Flyer number should.have been put in at time of booking.

I do not think there was much that could have been done to make it better. The delayed flight was due to bad weather. The turbulent patches were very unavoidable. Am simply thankful that there were no sudden and / or sharp drops during the flight. I do extend my compliments to captain Marcus I believe was his name and the rest of the crew. They all did an excellent job. My only question is whether I get a refund since the seats I had chosen and paid for were reassigned.

I spent 45 minutes with supervisor trying to get 2 bags checked for this international flight . He wouldn’t give it to me because West Jet was involved in this booking.

Everything and everyone were excellent except for the charge for using WiFi; there was no escape from this fee except to not use it.

Boarding was effortless, the food was outstanding, the seats in Premium Economy were extremely comfortable, and the staff and crew were excellent.

I never flew with alliance. Kayak is a joke and none of the flights or times were correct. Won’t ever use kayak again

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.

Very good overall. However, your choices of free movies was limited and there was no music Channel???

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

This was the worst flight I’ve been on. Getting on the plane where is was 30 degrees outside was hotter on board cabin must’ve been 33 degrees. This is a health hazard. They cannot be doing this to save on fuel. People could die from this!!. Fans and a/c was, off entertainment was off. Poor excuse given. Crew made the excuse that the system didn’t have enough power. They basically were operating on one engine to save on jet fuel till 3 hours later on cruising altitude and they then started the second engine. And finally the cabin was cooled. On a 7hour red eye flight this made it so uncomfortable and impossible to sleep.

My experience was great overall. Tanya was particularly friendly and helpful the entire trip. I was very pleased with her customer service skills. The plane was an older aircraft but the entire way was comfortable with barely any turbulence at all. Qantas should speed up its fleet renovation. Totally recommend using this airline.

Qantas is always subpar beyond comfy chairs for a domestic flight

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