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Cheap flights from Belfast to Sydney from £542

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 3/2. Fares are subject to change and may not be available on all flights or dates of travel.
BHD — SYD
4 Jan — 11 Jan1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Belfast to Sydney

Enter your travel dates to find the best prices.

Cheapest flights from Belfast to Sydney
Explore the most affordable flight options available from Belfast to Sydney. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 5 December 2025.

Sat 27/1206:30BHD - SYD
2 stops38h 05mMultiple Airlines
Fri 16/115:55SYD - BHD
2 stops35h 55mMultiple Airlines
Deal found 3/12£2,113
Sat 27/1208:50BFS - SYD
3 stops34h 45mMultiple Airlines
Mon 5/112:00SYD - BFS
3 stops44h 05mMultiple Airlines
Deal found 3/12£2,389
Sat 27/1206:35BHD - SYD
2 stops38h 20mMultiple Airlines
Mon 5/110:25SYD - BHD
2 stops33h 40mMultiple Airlines
Deal found 3/12£2,448
Sat 27/1206:35BHD - SYD
3 stops38h 40mAmerican Airlines
Fri 16/117:45SYD - BHD
2 stops36h 30mAmerican Airlines
Deal found 3/12£2,497
Sat 27/1218:00BHD - SYD
2 stops49h 50mQatar Airways
Mon 5/115:50SYD - BHD
2 stops29h 00mQatar Airways
Deal found 4/12£2,760
Thu 4/1217:45BHD - SYD
2 stops49h 50mChina Southern
Thu 11/1211:25SYD - BHD
2 stops42h 25mChina Southern
Deal found 3/12£4,697
Thu 4/1211:05BHD - SYD
2 stops47h 45mMultiple Airlines
Thu 11/1215:25SYD - BHD
2 stops40h 05mMultiple Airlines
Deal found 3/12£5,407

Find flight deals from Belfast to Sydney

Discover tips and strategies to find the most affordable flight options for your journey from Belfast (BF1) 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 December 2025.

Round-trip from

£872

One-way from

£542

Popular in

December

Cheapest in

October

Average price

£1,536
25/2-14/3
  • 25/2-14/3
  • 4 total stops
  • 68h 40m total
  • Belfast to Sydney
Search Deals
3/2
  • 3/2
  • 3 total stops
  • 56h 00m total
  • Belfast to Sydney
Search Deals
Highest demand for flights based on searches. 4% potential increase in price (£43 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£22 potential savings vs. average return price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Belfast 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 5 December 2025.
Use the filters below to find and compare flights from Belfast to Sydney that are best for you.

Fly from

Belfast

Fly to

Sydney

Route

Depart

Return

Price

BelfastSydney

BFS - SYD

BFSSYD

Belfast Intl

Wed 25/2

08:35-06:30

2 stops34h 55m

Sydney Kingsford Smith

Sat 14/3

21:30-20:15

2 stops33h 45m

£872

BelfastSydney

BHD - SYD

BHDSYD

Belfast City

Wed 25/2

07:25-06:30

2 stops36h 05m

Sydney Kingsford Smith

Sat 14/3

21:30-20:50

2 stops34h 20m

£878

BelfastSydney

BFS - SYD

BFSSYD

Belfast Intl

Sat 17/1

10:35-13:35

2 stops40h 00m

Sydney Kingsford Smith

Sat 24/1

21:30-17:40

2 stops31h 10m

£995

BelfastSydney

BHD - SYD

BHDSYD

Belfast City

Wed 4/3

11:25-07:55

2 stops33h 30m

Sydney Kingsford Smith

Sun 8/3

08:45-08:25

2 stops34h 40m

£1,141

BelfastSydney

BHD - SYD

BHDSYD

Belfast City

Thu 5/3

10:40-07:55

2 stops34h 15m

Sydney Kingsford Smith

Mon 9/3

11:15-09:05

2 stops32h 50m

£1,147

BelfastSydney

BHD - SYD

BHDSYD

Belfast City

Sun 8/3

09:10-18:50

2 stops46h 40m

Sydney Kingsford Smith

Thu 12/3

21:40-08:25

2 stops45h 45m

£1,266

BelfastSydney

BHD - SYD

BHDSYD

Belfast City

Sun 8/3

07:00-06:50

2 stops36h 50m

Sydney Kingsford Smith

Wed 11/3

15:50-09:45

2 stops28h 55m

£1,488

BelfastSydney

BHD - SYD

BHDSYD

Belfast City

Sun 4/1

09:10-07:55

2 stops35h 45m

Sydney Kingsford Smith

Wed 4/3

21:40-07:30

2 stops44h 50m

£1,690

BelfastSydney

BHD - SYD

BHDSYD

Belfast City

Sun 4/1

06:30-07:35

2 stops38h 05m

Sydney Kingsford Smith

Wed 4/3

15:55-16:50

2 stops35h 55m

£1,771

BelfastSydney

BFS - SYD

BFSSYD

Belfast Intl

Sat 27/12

08:50-06:35

3 stops34h 45m

Sydney Kingsford Smith

Mon 5/1

12:00-21:05

3 stops44h 05m

£2,389

Flights are sorted by cheapest return flights first.

Deals found on 3/12

Showing 1-10 of 14 results
1
2

Best time to book a flight from Belfast to Sydney

Have a flexible travel schedule? Discover the best time to fly to Sydney from Belfast 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 to Sydney

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

Currently, November is the cheapest month in which you can book a flight from Belfast to Sydney (average of £915). Flying from Belfast to Sydney in August is currently the most expensive (average of £1,195). 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.

What is the cheapest time of day to fly from BFS to SYD?

Find hourly flight availability from Belfast to Sydney. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 5 December 2025.

One of the essential ways to save on airfare from Belfast to Sydney is to remain as flexible as possible. Flights that are at midday tend to be the most expensive. A flight in the afternoon could potentially save you up to 24% on airfare.

How much does it cost for a return flight from Belfast to Sydney?

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 5 December 2025.
Get a feel of what it's like to fly with British Airways from Belfast to Sydney by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
British Airways
6.7
Okay
7,562 reviews
Check prices

Comfort

6.7

Overall

6.7

Crew

7.6

Boarding

6.9

Food

6.4

Entertainment

6.4

Reviews

1 / 20
10.0
Excellent

María Victoria,Nov 2025

LHR - GRU

Seats were comfortable for economy. Blanket and pillow provided, same as headphones. For some reason the uk plug wouldn’t charge and had to use the US charger. Also couldn’t use WiFi as keep saying BA club pw was wrong although it wasn’t: but minor things. Overall good flight and attentive crew.
British Airways
6.7
Okay
7,562 reviews
British Airways
6.7
Okay
7,562 reviews
Check prices

Comfort

6.7

Overall

6.7

Crew

7.6

Boarding

6.9

Food

6.4

Entertainment

6.4

Reviews

1 / 20
10.0
Excellent

María Victoria,Nov 2025

LHR - GRU

Seats were comfortable for economy. Blanket and pillow provided, same as headphones. For some reason the uk plug wouldn’t charge and had to use the US charger. Also couldn’t use WiFi as keep saying BA club pw was wrong although it wasn’t: but minor things. Overall good flight and attentive crew.

Related info for your journey

Find useful and relevant information for your journey from Belfast 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?

    Sydney Kingsford Smith (SYD), located 4.6 mi from the city center, is the airport you fly into when you book flights from Belfast to Sydney. 1 airline have flights to Kingsford Smith from Belfast on a regular basis. Booking flights from Belfast to Sydney Kingsford Smith should not be difficult; the airport handles an average of 0 inbound flights from Belfast per day.

  • How long is the flight from Belfast to Sydney?

    British Airways can get you from Belfast to Sydney in just under 33h 30m. Your travel time can differ by up to . Belfast and Sydney are separated by a distance of 10622 mi.

  • What is the cheapest airline to fly from Belfast to Sydney round-trip?

    According to our current data, British Airways (£986), offers the cheapest pricing from Belfast to Sydney. British Airways is priced at 19% lower than the current average price of a flight leaving 3 months from now.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Belfast 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 to Sydney?

    Currently, November is the cheapest month in which you can book a flight from Belfast to Sydney (average of £915). Flying from Belfast to Sydney in August is currently the most expensive (average of £1,195). 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

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Alternative routes for Belfast to Sydney

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

Top airline flying from Belfast to Sydney

Discover the top airline that operate flights from Belfast 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 5 December 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest£986Average£1,203FlexibilityNo cancel feeOn-time70%
Search British Airways 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 to Sydney?

Deals for Belfast to Sydney flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.

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

Millions of users choose and trust Cheapflights to book the best flight deals from Belfast 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 to Sydney with no change fees?

Yes, we can. To see specific flights from Belfast to Sydney with no change fees, users can toggle flexible booking options after using the search form above to find flights.

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

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

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