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Cheap flights from Belfast Intl Airport to Sydney from £413

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 27/3. Fares are subject to change and may not be available on all flights or dates of travel.
BFS — SYD
12 Feb — 19 Feb1
1 adult
1 adult, Economy, 0 bags

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 13 January 2026.

Round-trip from

£705

One-way from

£413

Popular in

July

Cheapest in

October

Average price

£1,188
2/2-9/3
  • 2/2-9/3
  • 4 total stops
  • 77h 10m total
  • Belfast to Sydney
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27/3
  • 27/3
  • 2 total stops
  • 53h 50m total
  • Belfast to Sydney
Search Deals
Highest demand for flights based on searches. 8% potential increase in price (£83 potential increase over avg. return price).
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Cheapest flight prices on average. 2% potential price decrease (£21 potential savings vs. average return price).
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Average for round-trip flights in January 2026
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Find 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 13 January 2026.

Mon 2/206:30
BFS
-
SYD
2 stops44h 05m
Multiple Airlines
Mon 9/312:00
SYD
-
BFS
2 stops33h 05m
Multiple Airlines
Deal found 12/1£705
Mon 18/506:10
BFS
-
SYD
2 stops28h 30m
Multiple Airlines
Wed 27/510:05
SYD
-
BFS
2 stops42h 35m
Multiple Airlines
Deal found 12/1£728
Thu 26/206:30
BFS
-
SYD
2 stops37h 00m
Multiple Airlines
Thu 5/312:00
SYD
-
BFS
2 stops45h 20m
Multiple Airlines
Deal found 11/1£739
Wed 25/214:50
BFS
-
SYD
3 stops41h 00m
Multiple Airlines
Wed 4/313:35
SYD
-
BFS
3 stops44h 15m
Multiple Airlines
Deal found 11/1£807
Mon 19/115:10
BFS
-
SYD
2 stops35h 25m
Multiple Airlines
Sun 1/210:30
SYD
-
BFS
3 stops46h 25m
Multiple Airlines
Deal found 12/1£812
Wed 23/908:55
BFS
-
SYD
2 stops36h 15m
Multiple Airlines
Mon 19/1022:20
SYD
-
BFS
2 stops33h 40m
Multiple Airlines
Deal found 11/1£954
Thu 15/106:30
BFS
-
SYD
2 stops44h 05m
Multiple Airlines
Wed 21/121:30
SYD
-
BFS
2 stops33h 05m
Multiple Airlines
Deal found 11/1£956

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 858,174 searches. Data last updated 13 January 2026.
Use the filters below to find and compare flights from Belfast Intl Airport to Sydney that are best for you.

Fly from

Belfast Intl

Fly to

Sydney

Route

Depart

Return

Price

BelfastSydney

BFS - SYD

BFSSYD

Belfast Intl

Mon 2/2

06:30-13:35

2 stops44h 05m

Sydney Kingsford Smith

Mon 9/3

12:00-10:05

2 stops33h 05m

£705

BelfastSydney

BFS - SYD

BFSSYD

Belfast Intl

Mon 18/5

06:10-19:40

2 stops28h 30m

Sydney Kingsford Smith

Wed 27/5

10:05-19:40

2 stops42h 35m

£728

BelfastSydney

BFS - SYD

BFSSYD

Belfast Intl

Thu 26/2

06:30-06:30

2 stops37h 00m

Sydney Kingsford Smith

Thu 5/3

12:00-22:20

2 stops45h 20m

£739

BelfastSydney

BFS - SYD

BFSSYD

Belfast Intl

Wed 25/2

14:50-18:50

3 stops41h 00m

Sydney Kingsford Smith

Wed 4/3

13:35-22:50

3 stops44h 15m

£807

BelfastSydney

BFS - SYD

BFSSYD

Belfast Intl

Fri 27/2

06:30-13:35

2 stops44h 05m

Sydney Kingsford Smith

Fri 6/3

15:30-13:50

2 stops33h 20m

£1,261

BelfastSydney

BFS - SYD

BFSSYD

Belfast Intl

Fri 27/3

17:30-10:20

2 stops53h 50m

£413

Flights are sorted by cheapest return flights first.

Deals found on 12/1

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 £498). Flying from Belfast Intl Airport to Sydney in August is currently the most expensive (average of £1,390). 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.

Reviews of airlines servicing Sydney

Get insights into the airlines that provide service to Sydney. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Sydney. Reviews last updated 13 January 2026.
Check out reviews from past customers who have flown with Qatar Airways and British Airways from Belfast Intl Airport to Sydney to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Qatar Airways
7.4
Good
3,714 reviews
Check prices

Crew

7.9

Entertainment

7.4

Food

7.3

Boarding

7.5

Comfort

7.4

Overall

7.4

Reviews

1 / 20
10.0
Excellent

Christian,Feb 2025

YUL - DOH

Excellent, except this time is was a long time to check in our luguage but I think this is not the usual.
Qatar Airways
7.4
Good
3,714 reviews
Qatar Airways
7.4
Good
3,714 reviews
Check prices

Crew

7.9

Entertainment

7.4

Food

7.3

Boarding

7.5

Comfort

7.4

Overall

7.4

Reviews

1 / 20
10.0
Excellent

Christian,Feb 2025

YUL - DOH

Excellent, except this time is was a long time to check in our luguage but I think this is not the usual.
British Airways
6.7
Okay
7,665 reviews
Qatar Airways
7.4
Good
3,714 reviews
Check prices

Crew

7.9

Entertainment

7.4

Food

7.3

Boarding

7.5

Comfort

7.4

Overall

7.4

Reviews

1 / 20
10.0
Excellent

Christian,Feb 2025

YUL - DOH

Excellent, except this time is was a long time to check in our luguage but I think this is not the usual.

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?

    Sydney Kingsford Smith (SYD), located 4.6 mi from the city center, is the airport you fly into when you book flights from Belfast Intl to Sydney. 2 airlines have flights to Kingsford Smith from Belfast Intl on a regular basis. Booking flights from Belfast Intl to Sydney Kingsford Smith should not be difficult; the airport handles an average of 0 inbound flights from Belfast Intl per day.

  • What are the cheapest airlines flying from Belfast Intl Airport to Sydney round-trip?

    British Airways, at £994, was found to be the cheapest airline from Belfast Intl Airport to Sydney. An alternate airline flying to your destination would be Qatar Airways. British Airways is currently priced 19% below the average price you’ll pay for this route.

  • 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 £498). Flying from Belfast Intl Airport to Sydney in August is currently the most expensive (average of £1,390). 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
Bondi Beach
Wollongong
Coogee
Manly

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
Belfast City to Coolangatta flights

Top 2 airlines flying from Belfast Intl to Sydney

Discover the top 2 airlines that operate flights from Belfast Intl to Sydney. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 13 January 2026.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest£994Average£1,184FlexibilityNo cancel feeOn-time70%
Search British Airways flights
Qatar AirwaysCheapest£1,057Average£1,188FlexibilityNo cancel feeOn-time68%
Search Qatar Airways flights

Fly with Cheapflights

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

When you search for this flight from Belfast Intl to Sydney, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

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

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Belfast Intl to Sydney.

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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