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Cheap flights from Belfast Intl Airport to Sydney from $802

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 16/6. Fares are subject to change and may not be available on all flights or dates of travel.
BFS — SYD
15 Apr — 22 Apr1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Belfast Intl to Sydney

Enter your travel dates to find the best prices.

Cheapest flights from Belfast Intl to Sydney
Explore the most affordable flight options available from Belfast Intl to Sydney. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 16 March 2026.

Fri 8/512:15
BFS
-
SYD
2 stops32h 55m
Multiple Airlines
Fri 22/511:25
SYD
-
BFS
2 stops36h 00m
Multiple Airlines
Deal found 14/3$1,807
Wed 29/408:55
BFS
-
SYD
2 stops36h 15m
Multiple Airlines
Sat 16/520:50
SYD
-
BFS
2 stops34h 50m
Multiple Airlines
Deal found 13/3$1,969
Tue 13/1008:00
BFS
-
SYD
2 stops39h 15m
Multiple Airlines
Wed 4/1111:50
SYD
-
BFS
2 stops39h 05m
Multiple Airlines
Deal found 12/3$2,032
Mon 27/416:30
BFS
-
SYD
2 stops28h 40m
Multiple Airlines
Mon 4/520:50
SYD
-
BFS
2 stops33h 05m
Multiple Airlines
Deal found 13/3$2,059
Tue 24/310:20
BFS
-
SYD
2 stops44h 35m
Multiple Airlines
Sat 11/420:50
SYD
-
BFS
2 stops35h 35m
Multiple Airlines
Deal found 11/3$2,095
Mon 13/409:15
BFS
-
SYD
2 stops27h 50m
Multiple Airlines
Mon 20/420:10
SYD
-
BFS
2 stops36h 00m
Multiple Airlines
Deal found 14/3$2,126
Thu 9/406:35
BFS
-
SYD
2 stops30h 30m
Multiple Airlines
Thu 23/420:10
SYD
-
BFS
2 stops33h 05m
Multiple Airlines
Deal found 14/3$2,377
Thu 19/307:00
BFS
-
SYD
2 stops37h 00m
Multiple Airlines
Wed 29/421:10
SYD
-
BFS
2 stops28h 20m
Multiple Airlines
Deal found 11/3$2,624
Wed 18/313:55
BFS
-
SYD
2 stops30h 05m
Multiple Airlines
Sat 18/406:00
SYD
-
BFS
2 stops36h 25m
Multiple Airlines
Deal found 11/3$2,639
Thu 12/318:35
BFS
-
SYD
2 stops36h 20m
Multiple Airlines
Thu 19/315:50
SYD
-
BFS
2 stops40h 45m
Multiple Airlines
Deal found 11/3$2,713

Find flight deals from Belfast Intl to Sydney

Discover tips and strategies to find the most affordable flight options for your journey from Belfast Intl (BFS) to Sydney (SYD). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 16 March 2026.

Round-trip from

$1,807

One-way from

$802

Popular in

July

Cheapest in

November

Average price

$2,122
8/5-22/5
  • 8/5-22/5
  • 4 total stops
  • 68h 55m total
  • Belfast to Sydney
Search Deals
16/6
  • 16/6
  • 3 total stops
  • 54h 40m total
  • Belfast to Sydney
Search Deals
Highest demand for flights based on searches. 9% potential increase in price ($351 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($81 potential savings vs. average return price).
Search Deals
Average for round-trip flights in March 2026
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Belfast Intl 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, Cheapflights users made 647,157 searches. Data last updated 16 March 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 - SYD

BFSSYD

Belfast Intl

Fri 8/5

12:15-06:10

2 stops32h 55m

Sydney Kingsford Smith

Fri 22/5

11:25-14:25

2 stops36h 00m

$1,807

BelfastSydney

BFS - SYD

BFSSYD

Belfast Intl

Wed 29/4

08:55-06:10

2 stops36h 15m

Sydney Kingsford Smith

Sat 16/5

20:50-22:40

2 stops34h 50m

$1,969

BelfastSydney

BFS - SYD

BFSSYD

Belfast Intl

Mon 27/4

16:30-06:10

2 stops28h 40m

Sydney Kingsford Smith

Mon 4/5

20:50-20:55

2 stops33h 05m

$2,059

BelfastSydney

BFS - SYD

BFSSYD

Belfast Intl

Mon 13/4

09:15-22:05

2 stops27h 50m

Sydney Kingsford Smith

Mon 20/4

20:10-23:10

2 stops36h 00m

$2,126

BelfastSydney

BFS - SYD

BFSSYD

Belfast Intl

Sat 25/4

09:30-06:10

2 stops35h 40m

Sydney Kingsford Smith

Sat 2/5

20:50-21:25

2 stops33h 35m

$2,275

BelfastSydney

BFS - SYD

BFSSYD

Belfast Intl

Thu 9/4

06:35-22:05

2 stops30h 30m

Sydney Kingsford Smith

Thu 23/4

20:10-20:15

2 stops33h 05m

$2,377
Fastest return journey

BelfastSydney

BFS - SYD

BFSSYD

Belfast Intl

Tue 31/3

14:45-07:05

2 stops30h 20m

Sydney Kingsford Smith

Tue 28/4

15:40-13:30

2 stops30h 50m

$2,729

BelfastSydney

BFS - SYD

BFSSYD

Belfast Intl

Mon 30/3

15:35-17:25

2 stops39h 50m

Sydney Kingsford Smith

Thu 30/4

22:10-14:25

2 stops49h 15m

$4,789
Cheapest one-way

BelfastSydney

BFS - SYD

BFSSYD

Belfast Intl

Sun 14/6

18:00-09:20

2 stops54h 20m

$898

BelfastSydney

BFS - SYD

BFSSYD

Belfast Intl

Mon 15/6

06:10-09:00

2 stops41h 50m

$946

Flights are sorted by cheapest return flights first.

Deals found on 12/3

Showing 1-10 of 14 resultsSorted by cheapest first
1
2

Best time to book a flight from Belfast Intl to Sydney

Have a flexible travel schedule? Discover the best time to fly to Sydney from Belfast Intl with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Belfast Intl Airport to Sydney

What is the cheapest month to book a flight from Belfast Intl Airport to Sydney?

Currently, May is the cheapest month in which you can book a flight from Belfast Intl Airport to Sydney (average of $959). Flying from Belfast Intl Airport to Sydney in August is currently the most expensive (average of $2,905). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Related info for your journey

Find useful and relevant information for your journey from Belfast Intl to Sydney. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Sydney from Belfast Intl?

    Most people fly into Sydney Kingsford Smith (SYD) if they book a flight to Sydney from Belfast Intl. On average, Kingsford Smith has 0 inbound flights from Belfast Intl per day from 0 airlines. Sydney Kingsford Smith is conveniently located just 7.5 km from Sydney’s city centre.

  • Can I find deals for flights from Belfast Intl to Sydney that include hotel bookings?

    Yes. In addition to deals on Belfast Intl to Sydney flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Belfast Intl to Sydney?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Belfast Intl to Sydney.

  • Can I find deals for business class flights from Belfast Intl to Sydney?

    Yes. Cheapflights offers flight deals from Belfast Intl to Sydney by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

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

    Currently, May is the cheapest month in which you can book a flight from Belfast Intl Airport to Sydney (average of $959). Flying from Belfast Intl Airport to Sydney in August is currently the most expensive (average of $2,905). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Travelling to a place near Sydney?

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

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Belfast Intl to Sydney

See prices for flight routes from nearby airports that may be better suited for you.
Belfast City to Sydney flights

Fly with Cheapflights

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How does Cheapflights help users find flights from Belfast Intl to Sydney?

Cheapflights makes it easy to find Belfast Intl to Sydney flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

Why should you use Cheapflights to find cheap flight tickets from Belfast Intl to Sydney?

Millions of users choose and trust Cheapflights to book the best flight deals from Belfast Intl to Sydney for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

Can Cheapflights find flights from Belfast Intl to Sydney with no change fees?

Need flexible booking options for your flight to Sydney from Belfast Intl? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

Can Cheapflights notify me if prices for flights from Belfast Intl to Sydney become cheaper?

Not ready to book yet? You can track prices for flights from Belfast Intl to Sydney on Cheapflights with our Price Alert feature and get notified when better prices are available.

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