BFS - SYD

£340 Find Cheap Flights from Belfast Intl Airport to Sydney

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Belfast Intl to Sydney departing on 21/3. 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 in flight searches from Belfast to Sydney, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Belfast to Sydney, as well as popular online travel agencies
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Everything you should know

Cheapest return fare
£839
Overall average: £1,124
Multiple Airlines
Sat 7/3Thu 19/3
BFS - SYD • 2 stops
Cheapest one-way flight
£340
Multiple Airlines
Sat 21/3
BFS - SYD • 3 stops
When to travel
October
Cheapest • 17% price drop
May
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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KAYAK searches hundreds of sites at once to find you the best travel deals.
We hope you love your trip to Sydney!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Belfast Intl to Sydney (BFS-SYD)

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

Sat, 7 Mar - Thu, 19 Mar
Multiple Airlines Logo
22:25 - 17:55
BFS
-
SYD
32h 30m
2 stops
Multiple Airlines Logo
08:55 - 09:45
SYD
-
BFS
35h 50m
2 stops
£839Multiple Airlines
Sat, 7 Mar - Thu, 19 Mar
Multiple Airlines Logo
07:55 - 13:35
BFS
-
SYD
42h 40m
3 stops
Multiple Airlines Logo
08:55 - 09:45
SYD
-
BFS
35h 50m
2 stops
£889Multiple Airlines
Wed, 18 Mar - Fri, 20 Mar
Multiple Airlines Logo
16:35 - 06:35
BFS
-
SYD
27h 00m
2 stops
Multiple Airlines Logo
12:30 - 18:45
SYD
-
BFS
41h 15m
3 stops
£995Multiple Airlines
Tue, 7 Apr - Tue, 14 Apr
Multiple Airlines Logo
05:55 - 09:00
BFS
-
SYD
42h 05m
3 stops
Multiple Airlines Logo
13:00 - 10:40
SYD
-
BFS
30h 40m
3 stops
£1,040Multiple Airlines
Tue, 7 Apr - Tue, 14 Apr
Multiple Airlines Logo
16:00 - 09:00
BFS
-
SYD
32h 00m
2 stops
Multiple Airlines Logo
13:00 - 10:40
SYD
-
BFS
30h 40m
3 stops
£1,119Multiple Airlines
Tue, 7 Apr - Tue, 14 Apr
Multiple Airlines Logo
14:45 - 09:00
BFS
-
SYD
33h 15m
2 stops
Multiple Airlines Logo
11:00 - 10:40
SYD
-
BFS
32h 40m
2 stops
£1,213Multiple Airlines
Wed, 18 Mar - Fri, 20 Mar
Multiple Airlines Logo
06:00 - 22:30
BFS
-
SYD
29h 30m
2 stops
Multiple Airlines Logo
12:00 - 10:20
SYD
-
BFS
33h 20m
2 stops
£1,578Multiple Airlines
Booking Insights

KAYAK's insights & trends for Belfast Intl to Sydney flights

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

What is the cheapest month to fly from Belfast Intl Airport to Sydney?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Belfast Intl Airport 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 Belfast Intl Airport to Sydney is October, where tickets cost £1,005 (return) on average. On the other hand, the most expensive months are July and December, where the average cost of round-trip tickets is £1,495 and £1,463 respectively.

Good to know - Cheap tickets from Belfast Intl Airport to Sydney

Low seasonAugust
Cheapest flight£340
Best time to beat the crowds but there is an average 12% increase in price.
Most popular time to fly and prices are also 8% lower on average.
Flight from Belfast Intl Airport to Sydney

When to book flights from Belfast Intl to Sydney

Are your dates flexible? Find out the best times to travel from Belfast Intl to Sydney based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated return price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or returns 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 Belfast Intl Airport to Sydney flights

  • What is the cheapest flight from Belfast Intl Airport to Sydney?

    In the last 3 days, the lowest price for a flight from Belfast Intl Airport to Sydney was £340 for a one-way ticket and £839 for a return.

  • Which aircraft models fly most regularly from Belfast Intl Airport to Sydney?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Belfast Intl Airport to Sydney?

    oneworld is the only airline alliance operating flights between Belfast Intl Airport and Sydney.

  • Which is the best airline for flights from Belfast to Sydney, Qatar Airways or British Airways?

    The two airlines most popular with KAYAK users for flights from Belfast to Sydney are Qatar Airways and British Airways. With an average price for the route of £1,119 and an overall rating of 7.4, Qatar Airways is the most popular choice. British Airways is also a great choice for the route, with an average price of £1,156 and an overall rating of 6.7.

  • How does KAYAK find such low prices on flights from Belfast Intl Airport 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 Belfast Intl Airport to Sydney.

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

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

  • What is the Hacker Fare option on flights from Belfast Intl Airport to Sydney?

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

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

Reviews of the top airlines flying from Belfast Intl to Sydney

 
See real verified KAYAK customer reviews for airlines flying from Belfast 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 Belfast Intl 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.
7.4
Qatar AirwaysOverall score based on 3727 reviews
7.5Boarding
7.4Entertainment
7.4Comfort
7.3Food
7.9Crew
Airline reviews

The seat cushions are absolutely lacking, not sure if they know the passengers are traveling for 14 hours straight, but the padding made our back and butt ache like crazy. The entertainment console had its own problems, either the headphone jack wasn't working or the power outlet via usb or ac outlet was not working. Not to mention the seat handles were not adjustable in some planes in the middle or on the aisle. Qatar may be operating a very old fleet of planes to make as much profit as possible, but passengers may not be following them for long, should this treatment of its customers continue. Qatar, wake up and do it right by your customers, or they may not be your customers anymore.

4.0 OkayAnonymous, Jan 2026
HYD - DOH
Read more Qatar Airways reviews

The seat cushions are absolutely lacking, not sure if they know the passengers are traveling for 14 hours straight, but the padding made our back and butt ache like crazy. The entertainment console had its own problems, either the headphone jack wasn't working or the power outlet via usb or ac outlet was not working. Not to mention the seat handles were not adjustable in some planes in the middle or on the aisle. Qatar may be operating a very old fleet of planes to make as much profit as possible, but passengers may not be following them for long, should this treatment of its customers continue. Qatar, wake up and do it right by your customers, or they may not be your customers anymore.

It would help id flight crew were not rude and showed some courtesy. They were shouting at passengers and yelling instructions as if we were school children at lunch cafeteria!!

Excellent service. The personal adaptation of menus and the individual timing of service of them is fantastic.

Crew and food was good, ok leg room if you don’t have a big box under the seat. And the seats are so narrow (I’m only 70kg), will consider an alternate airline next time

Boarding from DOH to SYD the Business Class were pointed in a separate gate but no one there to receive us. Otherwise it was ok.

The flight was delayed and one member of the crew was a bit rude. But apart from that all good.

I wish the leg room was better for Economy especially for the outbound flights to India . The outbound flight to US and Qatar was good

Terrible experience resolving missed connection after flight was delayed. 3 hour queue at transit desk, not enough staff, no organisation, worst ever flying experience.

Our male flight attendant was top notch - wish I could remember his name. Boarding is never fun when I have to ride the shuttle to the middle of the tarmac and pull my carry on bags up the stairs to my seat. My knees are banged up and my shoulders give me pain, so the flight started off poorly. The seat leg rests don’t recline completely so that makes is difficult if not dangerous to get in and out of the middle seats. The entertainment system touch screens prevented one from seeing the options. They are old and the software needs to be updated. I was on six planes in the last two weeks and able to see the flight progress without any stress. Couldn’t watch anything else. I do like Qatar Airways, just not a fan of a few things.

There was not enough food for everybody. Some dishes were missing.

It’s the old style plane with the old Ying Yang seats doesn’t compare to other airlines with newer planes.

I was unable to board this flight because of visa changes that I was not alerted about and I’ve been unable to contact Kayak to obtain a refund / credit anything.

Entertainment system didn't work well. Also no new movies and limited choice of other programmes. . And only one USB A charger option. Most modern electronic items needs USB C. Planes should offer both

My touch screen at my seat wasn't working, the films BA advertised on the website for this flight were not available, and the plane was a little dated, food was good and the staff were good, just let down by the aircraft facilities.

The space in the seat was okay, the staff were friendly, the entertainment system, my touch screen was not working and some of the films listed on the website for the flight were not available.

Did not like the seating configuration at all with 2+3+2 in business class. Lacking total privacy and comfort

Check-in experience, for business call please provide a premium experience

Lost my luggage, ran out of food choices in business class, ground crew was completely unapologetic.

Excellent. The crew and flight were great. Checking in was easy and everyone was very helpful.

Late. And service was very slow - passengers sat for well over an hour with dirty trays etc surrounding them

Everything you need to know for your flight from Belfast Intl to Sydney

Information on your arrival and departure airports