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Cheap flights from Belfast Intl Airport to Sydney from $905

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 31/10. Fares are subject to change and may not be available on all flights or dates of travel.
BFS — SYD
4 Sep — 11 Sep1
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 5 August 2026.

Mon 14/908:15 -
2 stops43h 20m
Mon 21/911:00 -
2 stops42h 25m
Deal found 31/7$1,624
Tue 1/906:15 -
2 stops41h 45m
Tue 15/911:00 -
2 stops43h 05m
Deal found 2/8$1,643
Wed 16/915:40 -
2 stops29h 30m
Wed 23/915:40 -
2 stops32h 40m
Deal found 2/8$1,866
Sun 30/809:55 -
2 stops38h 05m
Sun 6/911:00 -
2 stops42h 15m
Deal found 2/8$1,873
Mon 7/906:10 -
2 stops28h 15m
Sun 13/915:40 -
2 stops27h 00m
Deal found 3/8$1,967
Sat 14/1108:50 -
3 stops34h 40m
Sat 28/1113:25 -
3 stops41h 45m
Deal found 4/8$2,134
Fri 30/1013:35 -
2 stops33h 25m
Fri 4/1221:35 -
2 stops35h 25m
Deal found 1/8$2,289
Sat 12/1214:05 -
2 stops29h 25m
Fri 1/110:30 -
2 stops35h 45m
Deal found 1/8$2,801
Fri 6/1106:30 -
2 stops25h 05m
Sat 7/1121:30 -
2 stops33h 55m
Deal found 3/8$3,183

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 5 August 2026.

Round-trip from

$1,624

One-way from

$905
14/9-21/9
  • 14/9-21/9
  • 4 total stops
  • 85h 45m total
  • Belfast to Sydney
Search Deals
31/10
  • 31/10
  • 2 total stops
  • 51h 20m total
  • Belfast to Sydney
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 5 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 - SYD

BFSSYD

Belfast Intl

Tue 1/9

06:15-09:00

2 stops41h 45m

Sydney Kingsford Smith

Tue 15/9

11:00-21:05

2 stops43h 05m

$1,643

BelfastSydney

BFS - SYD

BFSSYD

Belfast Intl

Wed 16/9

15:40-06:10

2 stops29h 30m

Sydney Kingsford Smith

Wed 23/9

15:40-15:20

2 stops32h 40m

$1,866

BelfastSydney

BFS - SYD

BFSSYD

Belfast Intl

Sun 30/8

09:55-09:00

2 stops38h 05m

Sydney Kingsford Smith

Sun 6/9

11:00-20:15

2 stops42h 15m

$1,873

BelfastSydney

BFS - SYD

BFSSYD

Belfast Intl

Sun 10/1

20:55-07:20

2 stops47h 25m

Sydney Kingsford Smith

Wed 20/1

12:00-19:35

2 stops42h 35m

$2,055

BelfastSydney

BFS - SYD

BFSSYD

Belfast Intl

Sat 14/11

08:50-06:30

3 stops34h 40m

Sydney Kingsford Smith

Sat 28/11

13:25-20:10

3 stops41h 45m

$2,134

BelfastSydney

BFS - SYD

BFSSYD

Belfast Intl

Fri 30/10

13:35-10:00

2 stops33h 25m

Sydney Kingsford Smith

Fri 4/12

21:35-22:00

2 stops35h 25m

$2,289

BelfastSydney

BFS - SYD

BFSSYD

Belfast Intl

Sat 12/12

14:05-06:30

2 stops29h 25m

Sydney Kingsford Smith

Fri 1/1

10:30-11:15

2 stops35h 45m

$2,801

BelfastSydney

BFS - SYD

BFSSYD

Belfast Intl

Mon 7/9

15:35-16:00

2 stops39h 25m

Sydney Kingsford Smith

Sun 13/9

21:05-07:40

3 stops43h 35m

$3,171
Fastest return journey

BelfastSydney

BFS - SYD

BFSSYD

Belfast Intl

Fri 6/11

06:30-18:35

2 stops25h 05m

Sydney Kingsford Smith

Sat 7/11

21:30-20:25

2 stops33h 55m

$3,183

BelfastSydney

BFS - SYD

BFSSYD

Belfast Intl

Mon 14/9

20:15-19:10

3 stops37h 55m

Sydney Kingsford Smith

Mon 21/9

13:35-19:05

2 stops38h 30m

$3,472

Flights are sorted by cheapest return flights first.

Deals found on 3/8

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.

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.

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
Lithgow
Cronulla
Randwick
Terrigal
Leura
Bondi Beach
Coogee

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

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

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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