$677 Find Cheap Flights from Belgium 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 23/9. 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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Cheap Flights from Belgium to Sydney

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights from Belgium 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 Belgium to Sydney

Thu, 27 Aug - Thu, 3 Sep
Multiple Airlines Logo
13:25 - 06:15
BRU
-
SYD
32h 50m
2 stops
Multiple Airlines Logo
19:40 - 06:45
SYD
-
BRU
43h 05m
1 stop
$1,598Multiple Airlines
Mon, 21 Sep - Tue, 6 Oct
Etihad Airways Logo
10:55 - 16:50
BRU
-
SYD
21h 55m
1 stop
Etihad Airways Logo
21:35 - 07:05
SYD
-
BRU
42h 30m
1 stop
$1,731Etihad Airways
Mon, 21 Sep - Tue, 6 Oct
Etihad Airways Logo
10:55 - 16:50
BRU
-
SYD
21h 55m
1 stop
Etihad Airways Logo
21:35 - 07:05
SYD
-
BRU
42h 30m
1 stop
$1,734Etihad Airways
Mon, 21 Sep - Tue, 6 Oct
Etihad Airways Logo
10:55 - 16:50
BRU
-
SYD
21h 55m
1 stop
Etihad Airways Logo
21:35 - 07:05
SYD
-
BRU
42h 30m
1 stop
$1,745Etihad Airways
Mon, 21 Sep - Tue, 6 Oct
Multiple Airlines Logo
12:10 - 08:00
BRU
-
SYD
35h 50m
3 stops
Multiple Airlines Logo
21:35 - 07:05
SYD
-
BRU
42h 30m
1 stop
$1,765Multiple Airlines
Mon, 21 Sep - Tue, 6 Oct
Multiple Airlines Logo
12:10 - 08:00
BRU
-
SYD
35h 50m
3 stops
Multiple Airlines Logo
21:35 - 07:05
SYD
-
BRU
42h 30m
1 stop
$1,767Multiple Airlines
Sun, 25 Oct - Sun, 1 Nov
Multiple Airlines Logo
20:50 - 17:45
BRU
-
SYD
34h 55m
2 stops
Multiple Airlines Logo
10:30 - 06:45
SYD
-
BRU
54h 15m
2 stops
$1,777Multiple Airlines
Sat, 29 Aug - Sat, 12 Sep
Thai Airways Logo
13:30 - 20:30
BRU
-
SYD
23h 00m
1 stop
Thai Airways Logo
10:00 - 07:15
SYD
-
BRU
29h 15m
1 stop
$2,282Thai Airways
Sat, 29 Aug - Fri, 18 Sep
Thai Airways Logo
13:30 - 20:30
BRU
-
SYD
23h 00m
1 stop
Thai Airways Logo
14:35 - 07:15
SYD
-
BRU
24h 40m
1 stop
$2,360Thai Airways
Sat, 29 Aug - Fri, 18 Sep
Thai Airways Logo
13:30 - 20:30
BRU
-
SYD
23h 00m
1 stop
Thai Airways Logo
14:35 - 07:15
SYD
-
BRU
24h 40m
1 stop
$2,488Thai Airways
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 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 May, where tickets cost $1,851 on average for return flights. On the other hand, the most expensive months are December and June, where the average cost of tickets from Belgium is $2,659 and $2,639 respectively. For one-way flights, the best month to travel is June with an average price of $857.

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 4 weeks before departure, which saves you about 15% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 18 weeks before departure.

Good to know

Low season

April

Cheapest flight

$677
Best time to beat the crowds (15% less expensive on average)
Most popular time to fly and prices are also 11% lower on average.
Flight from Brussels Airport 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 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.

  • How many direct flights to Sydney are there each week?

    Each week there are around 8,235 direct flights from within Belgium to Sydney. The most common day for departures is Friday, with 17% of flights taking off on this day.

Top tips for finding cheap flights to Sydney

  • Enter your preferred departure airport and travel dates into the search form above to unlock the latest Sydney flight deals.

Reviews of the top airlines flying from Belgium 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 Belgium 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.
7.9
Thai AirwaysOverall score based on 412 reviews
7.5Food
8.4Crew
8.0Boarding
7.7Comfort
6.9Entertainment
Airline reviews

We still get drinks and a snack. Love the gift bags too.

10.0 ExcellentTsaav Stuvy, Mar 2026
BKK - UTH
Read more Thai Airways reviews

We still get drinks and a snack. Love the gift bags too.

Seats were uncomfortable and the vegetarian meal was awful. Some of the entertainment didn't work.

Terrible. It’s like they are stuck in the dark ages. I brought a standard carry on suitcase and a back pack - I was told I could only carry on 7kg per bag - in business class, I was forced to remove articles from the suitcase and put them into my backpack! That’s the most ridiculous thing I’ve ever encountered in all my years of flying. The two bags weighed the same amount but one could not be more than 7kg. Holy cow.

I give EVA 5 stars in every category. I enjoy this airline and it's great team of employees. I always highly recommend EVA to friends and family and everyone.

USB charging port was not working at my seat 48K.

The flight attendants ignored us several times which was annoying. The sandwich thing wasn't very good but it's only an hour flight, it would have been better to have entertainment over bad food.

The transfer from Domestic and International was a bit confusing but I am easily confused. I did not eat any food, but the food on the other leg was decent. It was nice they turned the lights off on the night flight. The plane was in good shape, but was a little cramped in economy and I am small. They gave me a customs form to fill out and nobody looked at it as I went through customs. Not a bad flight.

Thai Airways is one of the best airlines in the business. Looking forward to fly again with them.

food poor i said chiken i got pack a pow breakfast lousey .job to explain wot it was ...

After going back and forth with the airline, they never reimbursed the airline tickets. Went around asking multiple people how to get reimbursed and kept getting put back, not satisfied with their customer service.

Good service. But on flight to Kochi no entertainment except in app. And no working outlets to charge phone.

Very delayed and uncomfortable seats. Nothing written in Urdu for Pakistanis. Tons of Pakistanis use the airline they should ensure the airline is accommodating them properly.

I had a terrible experience checking in at the airport for my flight. I booked my ticket initially through Kayak while it was promoted as a ticket that offers a carry on and 2 suit cases. (I have a screen shot as a proof of it) I selected it to buy three tickets and paid online. Couple of minutes later airfare assist which is the OTA offering the ticket called me saying My card declined. So I used a different card that went through. I was surprised that they increased the price ticket by a $167. They said the ticket no longer exists and because my card declined I had to buy a new one. So I did. The day my family and I were traveling I could not check in and when I went to the airport I was shocked to be told my ticket had no bags allowed and must pay $200 per bag for three people 6 bags mean I have to pay $1200. I called the travel agency as I feel I was scammed the confirmation didn’t say anything about the bags and they never told me the new ticket doesn’t not include any bag so they changed it after I selected it on your app without informing me. Very sneaky. The travel agency said they will reimburse me only for one bag person. Which means I still paid $600 I still feel very disappointed to pay such an expense. I have always used Kayak to buy my flight tickets and telling everyone how good your rates and app are however after this I feel I was mislead and paid more for something I should not have to. You allowing such an agency on your platform will surely hurt your reputation and level of integrity. I have all the proofs from the screen shot to the confirmation email from them, the or email offering to reimburse o e bag per person and the $1200 bag fees receipts that I paid on the desk. I must be refund the full amount and I look forward to your response.

Bad. Flight was very uncomfortable with narrow and shallow seats, very little food and water. I will not fly etihad again.

Lovely crew - comfortable journey despite it being an older plane.

Ripped off and broken seats in Business class. Seats stink and need to request the staff for additional bedsheets. Crew if very friendly though

Boarding was quick and efficient. Ground staff were pleasant and courteous. Food was tasty, portions were good for me. Food containers kept slipping on the tray. Tray would look better with an anti-skid tray mat. I had the bulkhead seat which was very uncomfortable for couple of reasons. Aircraft is designed with no throughput to move across aisle to aisle. Passengers kept jumping over my legs to get from one side to the other to use the toilet. Secondly I had a mother and 9 month baby next to me. Mom had to hold baby for 12 hours in her lap as he did not fit into the bassinet. Half the baby was on my lap during the flight. Aircraft temperature was very cold - light attendant said it was the central cooling and nothing could be done about it. Movie selection was very poor old and outdated.

It feels like the seat did not have any cushion just plywood. The seats are so compact that I could not even move at all and I am slim. Just imagine someone else. Singapore Air and Emirates are far far better than this. Do not even travel for free. For a 12 hour flight sitting on a plywood is horrible experience and on top of that the person at checking counter at NY was worst and rude. Plus they charge arms and leg for everything. I think they would also start charging for belts and oxygen also soon. First and last time flying with Ethiad.

I travelled from Adu Dhabi to Melb; service was minimal at best, when I asked for a bottle of water but no meal I was told it was not available- it seemed a cup would do. The staff were un helpful & dismissive. We had a family near us who I never saw obtain any assistance from crew- they were simply avoided! Meal was simple and adequate no hot drinks were on offer until close to arriving, with a pseudo breakfast. Seats were tight despite obtaining extra leg room. I will not be flying with Etihad again and will not recommend them to family & friends.

Nothing was good everthing was hopeless especially your staff at indira gandhi international airport india.Everthing has deteoriated

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Everything you need to know for your flight to Sydney

Information on the airport you'll fly into in Sydney