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Cheap flights from Belfast Intl Airport to Sydney from £574

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Belfast Intl Airport to Sydney departing on 31/12. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Find the cheapest flights from Belfast Intl Airport to Sydney

Cheap return flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
06:10 - 12:35BFS  Belfast Intl-SYD Sydney Kingsford Smith
45h 25m2 stops London Gatwick Shanghai Pu Dong
Multiple Airlines Logo
11:00 - 07:40SYD  Sydney Kingsford Smith-BFS Belfast Intl
53h 40m2 stops Shanghai Pu Dong London Gatwick
£795Multiple Airlines
Wed, 9 Sep - Tue, 15 Sep
Multiple Airlines Logo
06:10 - 12:35BFS  Belfast Intl-SYD Sydney Kingsford Smith
45h 25m2 stops London Gatwick Shanghai Pu Dong
Multiple Airlines Logo
11:00 - 07:40SYD  Sydney Kingsford Smith-BFS Belfast Intl
53h 40m2 stops Shanghai Pu Dong London Gatwick
£798Multiple Airlines
Wed, 9 Sep - Tue, 15 Sep
Multiple Airlines Logo
13:50 - 06:10BFS  Belfast Intl-SYD Sydney Kingsford Smith
31h 20m2 stops Manchester Abu Dhabi Zayed Intl
Multiple Airlines Logo
15:40 - 15:15SYD  Sydney Kingsford Smith-BFS Belfast Intl
32h 35m2 stops Abu Dhabi Zayed Intl Manchester
£1,096Multiple Airlines
Wed, 9 Sep - Tue, 15 Sep
Multiple Airlines Logo
08:25 - 15:50BFS  Belfast Intl-SYD Sydney Kingsford Smith
44h 25m3 stops Manchester Paris Charles de Gaulle Beijing Capital
Multiple Airlines Logo
10:30 - 20:55SYD  Sydney Kingsford Smith-BFS Belfast Intl
45h 25m3 stops Beijing Capital Barcelona-El Prat Manchester
£1,208Multiple Airlines
Tue, 22 Dec - Tue, 12 Jan
Multiple Airlines Logo
09:25 - 20:20BFS  Belfast Intl-SYD Sydney Kingsford Smith
47h 55m3 stops Manchester Madrid Barajas Guangzhou Baiyun
Multiple Airlines Logo
10:40 - 15:05SYD  Sydney Kingsford Smith-BFS Belfast Intl
39h 25m3 stops Beijing Capital Barcelona-El Prat London Luton
£1,210Multiple Airlines
Thu, 17 Dec - Thu, 14 Jan
Multiple Airlines Logo
09:25 - 20:20BFS  Belfast Intl-SYD Sydney Kingsford Smith
47h 55m3 stops Manchester Madrid Barajas Guangzhou Baiyun
Multiple Airlines Logo
09:20 - 10:10SYD  Sydney Kingsford Smith-BFS Belfast Intl
35h 50m2 stops Shanghai Pu Dong London Gatwick
£1,276Multiple Airlines
Thu, 17 Dec - Thu, 14 Jan

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Customise your flight search to find flights from Belfast Intl Airport to Sydney that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 279,928 searches. Data last updated 14 August 2026.
Use the filters below to find and compare flights from Belfast Intl Airport to Sydney that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

BelfastSydney

BFS Belfast Intl - SYD Sydney Kingsford Smith

BFSSYD

Belfast Intl

Wed 9/9

06:10-12:35

2 stops45h 25m

Sydney Kingsford Smith

Tue 15/9

11:00-07:40

2 stops53h 40m

£795

BelfastSydney

BFS Belfast Intl - SYD Sydney Kingsford Smith

BFSSYD

Belfast Intl

Wed 9/9

06:10-12:35

2 stops45h 25m

Sydney Kingsford Smith

Tue 15/9

11:00-07:40

2 stops53h 40m

£798
Fastest return journey

BelfastSydney

BFS Belfast Intl - SYD Sydney Kingsford Smith

BFSSYD

Belfast Intl

Wed 9/9

13:50-06:10

2 stops31h 20m

Sydney Kingsford Smith

Tue 15/9

15:40-15:15

2 stops32h 35m

£1,096

BelfastSydney

BFS Belfast Intl - SYD Sydney Kingsford Smith

BFSSYD

Belfast Intl

Tue 22/12

08:25-15:50

3 stops44h 25m

Sydney Kingsford Smith

Tue 12/1

10:30-20:55

3 stops45h 25m

£1,208

BelfastSydney

BFS Belfast Intl - SYD Sydney Kingsford Smith

BFSSYD

Belfast Intl

Thu 17/12

09:25-20:20

3 stops47h 55m

Sydney Kingsford Smith

Thu 14/1

10:40-15:05

3 stops39h 25m

£1,210

BelfastSydney

BFS Belfast Intl - SYD Sydney Kingsford Smith

BFSSYD

Belfast Intl

Thu 17/12

09:25-20:20

3 stops47h 55m

Sydney Kingsford Smith

Thu 14/1

09:20-10:10

2 stops35h 50m

£1,276
Cheapest one-way

BelfastSydney

BFS Belfast Intl - SYD Sydney Kingsford Smith

BFSSYD

Belfast Intl

Thu 31/12

21:05-18:50

3 stops58h 45m

£574
Fastest single journey

BelfastSydney

BFS Belfast Intl - SYD Sydney Kingsford Smith

BFSSYD

Belfast Intl

Thu 31/12

14:30-08:35

2 stops31h 05m

£657

Flights are sorted by cheapest return flights first.

Sorted by cheapest first

When to book flights from Belfast Intl Airport to Sydney

Are you open to changing your travel dates? Check out the ideal times to fly from Belfast Intl Airport to Sydney according to our flight data. Find out which month and days have the cheapest flights.
Estimated return price

Cheap Belfast Intl Airport to Sydney (BFS to SYD) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Belfast Intl Airport to Sydney

Fastest flight time

29h 10m

Direct flights

None
The fastest flight from Belfast Intl Airport to Sydney takes 29h 10m
There are no direct flights from Belfast Intl Airport to Sydney. There are no popular flight routes from Belfast Intl Airport to Sydney.
Search flight deals

Frequently asked questions about flying from Belfast Intl Airport to Sydney

  • How far is Belfast Intl to Sydney Kingsford Smith by plane?

    The distance between Belfast Intl and Sydney Kingsford Smith is about 10627.1 mi. Flights usually cover this in 29h 10m, depending on flying conditions and air traffic around both airports.

  • When did momondo last update prices for flights from Belfast Intl Airport to Sydney Kingsford Smith Airport?

    Prices for flights from Belfast Intl Airport to Sydney Kingsford Smith Airport are refreshed on a daily basis.

  • How many operators does momondo search for flights from Belfast Intl Airport to Sydney Kingsford Smith Airport?

  • How old do you have to be to fly from Belfast Intl Airport to Sydney Kingsford Smith Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Belfast Intl Airport to Sydney Kingsford Smith Airport.

  • What documentation or ID do you need to fly to Sydney Kingsford Smith Airport?

    The necessary travel and health documents for your Sydney Kingsford Smith Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

  • What is the most popular airline from Belfast Intl Airport to Sydney?

Best airlines flying from Belfast Intl Airport to Sydney

Compare and see reviews for airlines that fly from Belfast Intl Airport to Sydney with momondo
Airline
Rating
Free Cancellation
Price
Qatar AirwaysPriceFrom £497Free CancellationRating
7.4
3,739 reviews
Search Qatar Airways flights
British AirwaysPriceFrom £992Free CancellationRating
6.7
8,157 reviews
Search British Airways flights

Frequently asked questions about flying from Belfast Intl Airport to Sydney

  • How do I get Price Alerts for flights from Belfast Intl Airport to Sydney?

    Confirm your travel details to search for the latest offers for flights from Belfast Intl Airport to Sydney. While browsing offers there will be the option to toggle “Price Alerts”. You’ll then receive updates when prices for the flight route increase or decrease.

  • How can I save money on flights from Belfast Intl Airport to Sydney with momondo?

    Plan your trips smart with the “Price Forecast” feature, which uses flight data to help you pick the best days to fly for the lowest fares. Our “Price Calendar” helps you get the most for your money by showing you when it’s most advantageous to fly. Curate your own travel experiences for less with “Explore”. Expert travel hacks to fuel your next adventure are a click away with “Discover” by momondo. Set up our “Price Alerts” to track fare changes and book when prices are at their lowest point.

  • How does momondo find its flight prices?

    momondo shows deals across 700+ competitors all at once. momondo is active in 30 international markets, so you can have access to a wide range of options from airlines and OTAs alike.

Travelling to a place near Sydney?

Book flights to Sydney if you plan to visit one of these locations
Bondi Beach
Randwick
Cronulla
Leura
Coogee
Manly
Katoomba
Wollongong
Penrith
Swansea

Why use momondo?

Why should I use momondo to find a flight deal from Belfast to Sydney?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Belfast to Sydney . Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from Belfast to Sydney with flexible booking policies on momondo?

All flight searches from Belfast to Sydney on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from Belfast to Sydney?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Belfast to Sydney.

I’m not ready to book a flight from Belfast to Sydney right now. Can momondo alert me if prices change?

If you are simply researching potential flights to Sydney, momondo offers a useful price alert feature which will track prices for flights to Sydney from Belfast and alert you when they change.

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