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Cheap flights from Belfast Intl Airport to Sydney from $1,509

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 18/7. Fares are subject to change and may not be available on all flights or dates of travel.
BFS — SYD
20 Jul — 27 Jul1
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 20 June 2026.

Wed 8/706:10
BFS
-
SYD
2 stops45h 25m
Multiple Airlines
Wed 22/711:00
SYD
-
BFS
2 stops41h 40m
Multiple Airlines
Deal found 19/6$1,965
Mon 22/610:00
BFS
-
SYD
2 stops35h 10m
Multiple Airlines
Mon 6/720:50
SYD
-
BFS
2 stops35h 20m
Multiple Airlines
Deal found 19/6$2,362
Mon 12/1015:35
BFS
-
SYD
2 stops29h 00m
Multiple Airlines
Sat 31/1021:30
SYD
-
BFS
3 stops33h 40m
Multiple Airlines
Deal found 19/6$2,832
Sun 19/721:05
BFS
-
SYD
2 stops54h 30m
Multiple Airlines
Sun 26/711:00
SYD
-
BFS
2 stops42h 15m
Multiple Airlines
Deal found 19/6$2,849
Tue 15/1217:15
BFS
-
SYD
2 stops26h 45m
Multiple Airlines
Fri 15/112:00
SYD
-
BFS
2 stops34h 15m
Multiple Airlines
Deal found 16/6$3,534

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 20 June 2026.

Round-trip from

$1,965

One-way from

$1,509

Popular in

July

Cheapest in

November

Average price

$2,166
8/7-22/7
  • 8/7-22/7
  • 4 total stops
  • 87h 05m total
  • Belfast to Sydney
Search Deals
18/7
  • 18/7
  • 3 total stops
  • 51h 50m total
  • Belfast to Sydney
Search Deals
Highest demand for flights based on searches. 12% potential increase in price ($501 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($170 potential savings vs. average return price).
Search Deals
Average for round-trip flights in June 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 20 June 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

Wed 8/7

06:10-12:35

2 stops45h 25m

Sydney Kingsford Smith

Wed 22/7

11:00-19:40

2 stops41h 40m

$1,965

BelfastSydney

BFS - SYD

BFSSYD

Belfast Intl

Mon 12/10

15:35-06:35

2 stops29h 00m

Sydney Kingsford Smith

Sat 31/10

21:30-20:10

3 stops33h 40m

$2,832

BelfastSydney

BFS - SYD

BFSSYD

Belfast Intl

Sun 19/7

21:05-12:35

2 stops54h 30m

Sydney Kingsford Smith

Sun 26/7

11:00-20:15

2 stops42h 15m

$2,849
Fastest return journey

BelfastSydney

BFS - SYD

BFSSYD

Belfast Intl

Tue 15/12

17:15-07:00

2 stops26h 45m

Sydney Kingsford Smith

Fri 15/1

12:00-11:15

2 stops34h 15m

$3,534
Cheapest one-way
Fastest single journey

BelfastSydney

BFS - SYD

BFSSYD

Belfast Intl

Sat 18/7

07:40-20:30

3 stops51h 50m

$1,509

Flights are sorted by cheapest return flights first.

Deals found on 18/6

Sorted by cheapest first

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
Cronulla
Manly
Terrigal
Lithgow
Randwick
Bondi Beach
Leura
Coogee

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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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