Cheap flights from Belfast Intl Airport to Sydney from $918
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 8/9. Fares are subject to change and may not be available on all flights or dates of travel.
Cheap 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 4 September 2025.
Round-trip from | $2,248 |
---|---|
One-way from | $918 |
Popular in | December |
Cheapest in | November |
Average price | $2,394 |
Find flight deals from Belfast Intl to Sydney
Cheapest flights from Belfast Intl to SydneyExplore 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 4 September 2025.
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 4 September 2025.
Cheapflights Fare Finder
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
BelfastSydney
BFS - SYD
BFSSYD
Belfast Intl
Thu 16/10
06:10-20:25
2 stops28h 15m
Sydney Kingsford Smith
Thu 23/10
11:15-15:35
2 stops38h 20m
BelfastSydney
BFS - SYD
BFSSYD
Belfast Intl
Tue 30/9
08:15-09:00
2 stops39h 45m
Sydney Kingsford Smith
Mon 10/11
12:00-20:10
2 stops43h 10m
BelfastSydney
BFS - SYD
BFSSYD
Belfast Intl
Fri 17/10
07:35-08:50
3 stops39h 15m
Sydney Kingsford Smith
Fri 24/10
13:50-22:35
3 stops42h 45m
BelfastSydney
BFS - SYD
BFSSYD
Belfast Intl
Sat 18/10
08:20-07:25
3 stops37h 05m
Sydney Kingsford Smith
Sat 25/10
16:00-11:55
2 stops29h 55m
BelfastSydney
BFS - SYD
BFSSYD
Belfast Intl
Mon 8/9
12:35-06:10
3 stops56h 35m
BelfastSydney
BFS - SYD
BFSSYD
Belfast Intl
Wed 15/10
06:10-08:50
3 stops40h 40m
BelfastSydney
BFS - SYD
BFSSYD
Belfast Intl
Sun 12/10
17:30-21:00
3 stops41h 30m
BelfastSydney
BFS - SYD
BFSSYD
Belfast Intl
Fri 17/10
18:40-08:20
3 stops51h 40m
BelfastSydney
BFS - SYD
BFSSYD
Belfast Intl
Mon 13/10
13:55-10:45
3 stops58h 50m
BelfastSydney
BFS - SYD
BFSSYD
Belfast Intl
Sun 5/10
17:30-21:00
3 stops41h 30m
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.
Cheapflights Insights
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Related info for your journey
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Alternative routes for Belfast Intl to Sydney
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Can Cheapflights find flights from Belfast Intl to Sydney with no change fees?
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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.