HKG - SYD

$320 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 from Hong Kong to Sydney departing on 8/12. 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

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Everything you should know

Cheapest round-trip
$637
Typical prices: $588-$822
Multiple Airlines
Mon 8/24Fri 8/28
HKG - SYD • 2 stops
Cheapest non-stop
$637
Typical prices: $605-$908
Cathay Pacific
Thu 8/27Mon 9/7
HKG - SYD • Non-stop
Advice from real travelers
AI-powered summary based on content written by travel experts. AI can make mistakes.
Cathay Pacific Economy includes two free checked bags on this long-haul route.
Qantas Economy adds free alcohol, while Cathay Pacific offers onboard Wi-Fi.
Expert advice
Expert advice
Expert advice
Expert advice
Top airlines
Cheapest • from $647 (round-trip)
Best reviews • 7.6 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
You can fly direct with Cathay Pacific, Qantas Airways and Hong Kong Airlines. Average duration is 9h 09m
Direct flights
Direct flights
+1
+1
Direct flights
Direct flights
+1
Avoid delays
Most punctual • 80% on-time
Best time • Fewest delays
Insights
Insights
Insights
Insights
Top layover airports
Cheapest • Avg $533 (round-trip)
Shortest trip • 13h 44m (one-way)
Insights
Insights
Insights
Insights
When to book
in advance
Our data shows that travelers who book at least 6 weeks in advance save around 15% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
Cheapest • 19% price drop
Most popular
Good to know
Good to know
+1
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Flight Deals

Cheap Flights from Hong Kong to Sydney (HKG-SYD)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip 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 round-trip flight deals from Hong Kong to Sydney

Mon, Aug 24 - Fri, Aug 28
Multiple Airlines Logo
8:45 pm - 6:10 pm
HKG
-
SYD
19h 25m
2 stops
Multiple Airlines Logo
1:00 pm - 8:20 pm
SYD
-
HKG
33h 20m
2 stops
$637Multiple Airlines
Fri, Aug 28 - Sun, Aug 30
Multiple Airlines Logo
10:40 pm - 11:45 am
HKG
-
SYD
35h 05m
2 stops
Multiple Airlines Logo
8:35 pm - 2:50 pm
SYD
-
HKG
20h 15m
2 stops
$642Multiple Airlines
Fri, Aug 28 - Sun, Aug 30
Multiple Airlines Logo
8:45 pm - 11:45 am
HKG
-
SYD
13h 00m
1 stop
Multiple Airlines Logo
11:05 am - 7:10 pm
SYD
-
HKG
10h 05mnonstop
$644Multiple Airlines
Wed, Aug 19 - Thu, Sep 10
Multiple Airlines Logo
8:25 am - 7:20 pm
HKG
-
SYD
32h 55m
3 stops
Multiple Airlines Logo
8:35 pm - 7:45 pm
SYD
-
HKG
25h 10m
1 stop
$645Multiple Airlines
Mon, Aug 24 - Fri, Aug 28
Multiple Airlines Logo
8:45 pm - 11:45 am
HKG
-
SYD
13h 00m
1 stop
Multiple Airlines Logo
10:15 am - 10:55 am
SYD
-
HKG
26h 40m
1 stop
$646Multiple Airlines
Sun, Dec 27 - Sat, Jan 16
Cathay Pacific Logo
9:20 pm - 9:35 am
HKG
-
SYD
9h 15mnonstop
Cathay Pacific Logo
8:45 am - 3:05 pm
SYD
-
HKG
9h 20mnonstop
$647Cathay Pacific
Sat, Aug 15 - Tue, Sep 15
Multiple Airlines Logo
7:45 am - 7:20 pm
HKG
-
SYD
33h 35m
2 stops
Multiple Airlines Logo
8:50 pm - 5:55 pm
SYD
-
HKG
23h 05m
1 stop
$648Multiple Airlines
Sun, Oct 25 - Wed, Oct 28
VietJet Air Logo
7:50 pm - 10:00 am
HKG
-
SYD
35h 10m
1 stop
VietJet Air Logo
12:05 pm - 6:50 pm
SYD
-
HKG
33h 45m
1 stop
$651VietJet Air
Mon, Aug 17 - Thu, Aug 27
Multiple Airlines Logo
7:40 am - 11:45 am
HKG
-
SYD
26h 05m
2 stops
Multiple Airlines Logo
8:35 pm - 8:20 pm
SYD
-
HKG
25h 45m
2 stops
$652Multiple Airlines
Sun, Aug 9 - Sat, Aug 15
Scoot Logo
8:45 pm - 11:45 am
HKG
-
SYD
13h 00m
1 stop
Scoot Logo
8:35 pm - 7:45 pm
SYD
-
HKG
25h 10m
1 stop
$655Scoot
Booking Insights

KAYAK's insights & trends for Hong Kong to Sydney flights

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

How much is a round-trip flight from Hong Kong to Sydney?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Hong Kong to Sydney departing in August.

What’s the cheapest day of the week to fly from Hong Kong to Sydney?

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

When flying from Hong Kong to Sydney, you should consider leaving on a Wednesday and avoid Mondays if you are looking for the best rates. For your return to Hong Kong, you’ll find the best rates on Tuesdays and the most expensive ones on Thursdays.

What is the cheapest month to fly from Hong Kong to Sydney?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Hong Kong 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 from Hong Kong to Sydney is March, where tickets cost $615 (return) on average. On the other hand, the most expensive months are January and July, where the average cost of round-trip tickets is $950 and $917 respectively.

Can I save money by flying with a layover from Hong Kong to Sydney?

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.

No, with an average price for the route of $702, prices are generally cheapest when you fly direct.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Hong Kong 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 on the flight from Hong Kong to Sydney, 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.

Expert advice

Expert advice for your flight from Hong Kong to Sydney

 
AI-powered summary based on content written by travel experts. AI can make mistakes.
KAYAK teamed up with top travel experts to share the best tips for your journey.
Our travel experts
Bill Fink

Bill Fink

Expert on Qantas Airways

Bill is an award-winning travel writer with extensive credits covering airlines and the aviation industry for publications including AARP, AFAR, The Points Guy and Yahoo. Based in Portland, Oregon, Bill has traveled to more than 75 countries - and been late for his flight in most of them. He once achieved top-level frequent flier status for all of American, Delta and United Airlines during a single year.

Chris Dong

Chris Dong

Expert on Cathay Pacific

Chris is a consumer travel reporter covering aviation, trending travel news, hotels, and loyalty programs—all for leading global publications like Travel + Leisure, The Washington Post, AFAR, and more. In addition to writing, Chris is a video host for Travel + Leisure, giving consumers an inside look at the latest in air travel.

Robert Schrader

Robert Schrader

Expert on HKG and SYD

One of the web's original travel bloggers, Robert launched his first site Leave Your Daily Hell in 2009. Since then, he's expanded into destination niche sites (one each for Japan, Thailand and Taiwan), in addition to having written for the inflight magazines of Singapore Airlines and Korean Air. Overall, he's visited nearly 100 countries, and flies business as often as possible.

Good to know

Low seasonJanuary
Cheapest flight$320
Best time to beat the crowds but there is an average 25% increase in price.
Most popular time to fly with an average 17% increase in price.
Flight from Hong Kong to Sydney

When to book flights from Hong Kong to Sydney

Are your dates flexible? Find out the best times to travel from Hong Kong to Sydney based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Hong Kong to Sydney

  • Are there direct flights between Hong Kong and Sydney Airports?

    Yes, Cathay Pacific operates frequent direct flights between Hong Kong and Sydney. China Airlines and Philippines Airlines both offer indirect routes transiting between locations such as Manila Ninoy Aquino International Airport (MNL) and Taipei International Airport (TPE). Singapore Airlines also offers an indirect route through Singapore Changi Airport (SIN). Transfer times can vary.

  • Is it easy to connect with central Sydney from the airport by public transport?

    Yes, Sydney is the busiest airport in Australia and consequently there are a range of public transport options between it and the city. The Airport Link train runs every 10min and the journey to Sydney usually takes 13min. A one-way fare is around A$ 15 but you will also have to pay an airport access fee of around A$ 9 on top of the train fare. Sydney Buses operate a regular service on Route 400 and 420; a single fare is also around A$ 15. Travelling by bus, you don’t have to pay the airport access fee. The trip by taxi will cost around A$ 55 and take roughly 20min.

  • Are there hotels at Sydney Airport?

    Yes, there are a number of hotels on the Sydney Airport campus, including ibis budget Sydney Airport, Mantra Sydney and Rydges Hotel. They are each within walking distance of the arrivals area.

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

    In the last 5 days, the lowest price for a flight from Hong Kong to Sydney was $320 for a one-way ticket and $637 for a round-trip.

  • Do I need a passport to fly between Hong Kong and Sydney?

    A passport is required to fly from Hong Kong to Sydney.

  • Which airports will I be using when flying from Hong Kong to Sydney?

    Hong Kong and Sydney are both served by 1 main airport. You will leave Hong Kong from Hong Kong Intl and will be arriving at Sydney Kingsford Smith.

  • Which airlines offer Wi-Fi service onboard planes from Hong Kong to Sydney?

    Only Cathay Pacific offers inflight Wi-Fi service on the Hong Kong to Sydney flight route.

  • Which aircraft models fly most regularly from Hong Kong to Sydney?

    The Airbus A330-300 is the aircraft model that flies most regularly on the Hong Kong to Sydney flight route.

  • Which airline alliances offer flights from Hong Kong to Sydney?

    oneworld is the only airline alliance operating flights between Hong Kong and Sydney.

  • On which days can I fly direct from Hong Kong to Sydney?

    There are nonstop flights from Hong Kong to Sydney on a daily basis.

  • Which is the best airline for flights from Hong Kong to Sydney, Cathay Pacific or Qantas Airways?

    The two airlines most popular with KAYAK users for flights from Hong Kong to Sydney are Cathay Pacific and Qantas Airways. With an average price for the route of $837 and an overall rating of 7.6, Cathay Pacific is the most popular choice. Qantas Airways is also a great choice for the route, with an average price of $768 and an overall rating of 7.5.

  • How does KAYAK find such low prices on flights from Hong Kong 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 from Hong Kong to Sydney.

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

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

  • What is the Hacker Fare option on flights from Hong Kong 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 to Hong Kong with another airline. Booking your flights between Hong Kong and SYD can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Hong Kong 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 from Hong Kong up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

KAYAK’s top tips for finding a cheap flight from Hong Kong to Sydney

  • Looking for a cheap flight? 25% of our users found flights on this route for $592 or less one-way and $590 or less round-trip.
  • Families with young children, people with additional needs, pregnant women and older people departing for Sydney can make use of the Caring Corner at Hong Kong Airport (HKG). This is a specially designated quiet area with televisions, seating and airport telephone helplines.
  • There are currency exchange desks and a range of international ATMs at the arrivals hall in Sydney Kingsford Smith Airport (SYD).
  • There are a number of lounges at Hong Kong Airport available to departing passengers, including Cathay Pacific Lounge, the Emirates Lounge and the United Club.

Prefer to fly direct from Hong Kong to Sydney?

 
Direct data is based off flight results for the next 60 days. Find direct flights from all airlines flying direct from Hong Kong Intl to Sydney Kingsford Smith.
Find which airlines fly direct from Hong Kong Intl Airport to Sydney Kingsford Smith Airport, which days they fly and book direct flights.

Direct departures

Hong Kong Intl to Sydney Kingsford Smith

Monday

Cathay Pacific,Qantas Airways

Cathay Pacific,Qantas Airways

Tuesday

Cathay Pacific,Hong Kong Airlines,Qantas Airways

Cathay Pacific,Hong Kong Airlines, +1 more

Wednesday

Cathay Pacific,Qantas Airways,Hong Kong Airlines

Cathay Pacific,Qantas Airways, +1 more

Thursday

Cathay Pacific,Hong Kong Airlines,Qantas Airways

Cathay Pacific,Hong Kong Airlines, +1 more

Friday

Cathay Pacific,Qantas Airways,Hong Kong Airlines

Cathay Pacific,Qantas Airways, +1 more

Saturday

Cathay Pacific,Hong Kong Airlines,Qantas Airways

Cathay Pacific,Hong Kong Airlines, +1 more

Sunday

Cathay Pacific,Hong Kong Airlines,Qantas Airways

Cathay Pacific,Hong Kong Airlines, +1 more

See more direct flights

Direct returns

Sydney Kingsford Smith to Hong Kong Intl

Monday

Cathay Pacific,Hong Kong Airlines,Qantas Airways

Cathay Pacific,Hong Kong Airlines, +1 more

Tuesday

Cathay Pacific,Qantas Airways

Cathay Pacific,Qantas Airways

Wednesday

Cathay Pacific,Hong Kong Airlines,Qantas Airways

Cathay Pacific,Hong Kong Airlines, +1 more

Thursday

Cathay Pacific,Qantas Airways

Cathay Pacific,Qantas Airways

Friday

Cathay Pacific,Hong Kong Airlines,Qantas Airways

Cathay Pacific,Hong Kong Airlines, +1 more

Saturday

Cathay Pacific,Qantas Airways

Cathay Pacific,Qantas Airways

Sunday

Cathay Pacific,Hong Kong Airlines,Qantas Airways

Cathay Pacific,Hong Kong Airlines, +1 more

See more direct flights

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

 
See real verified KAYAK customer reviews for airlines flying from Hong Kong to Sydney. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Hong Kong 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 1403 reviews
7.3Food
7.6Comfort
7.9Boarding
7.8Entertainment
8.1Crew
Airline reviews

Better food quality and suggest using the 777 for the HKG-BOS leg instead of the A330 since the seat pitch seems better on the Boeing.

4.0 OkayAnonymous, Jun 2026
HKG - BOS
Read more Cathay Pacific reviews

Better food quality and suggest using the 777 for the HKG-BOS leg instead of the A330 since the seat pitch seems better on the Boeing.

The legroom in economy on an A321 is wholly inadequate for a 6’3” man. Deeply dissatisfied.

Food isn’t hot, seat is too tight even for a person weight 120 lbs.

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.

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.

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

A few more inches of legroom is all i ask

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.

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

Information on your arrival and departure airports