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Cheap flights from Belfast to Sydney from $757

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 17/11. Fares are subject to change and may not be available on all flights or dates of travel.
BHD — SYD
17 Oct — 24 Oct1
1 adult
1 adult, Economy

Cheap 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 17 September 2025.

Round-trip from

$1,570

One-way from

$757

Popular in

December

Cheapest in

November

Average price

$2,322
29/10-5/11
  • 29/10-5/11
  • 5 total stops
  • 75h 55m total
  • Belfast to Sydney
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17/11
  • 17/11
  • 3 total stops
  • 59h 05m total
  • Belfast to Sydney
Search Deals
Highest demand for flights based on searches. 6% potential increase in price ($259 potential increase over avg. return price).
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Cheapest flight prices on average. 2% potential price decrease ($87 potential savings vs. average return price).
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Average for round-trip flights in September 2025
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Find flight deals from Belfast to Sydney

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 17 September 2025.

Sat 1/1108:50BFS - SYD
2 stops38h 10mMultiple Airlines
Tue 11/1112:00SYD - BFS
2 stops43h 15mMultiple Airlines
Deal found 15/9$1,653
Sat 1/1107:25BHD - SYD
2 stops39h 35mMultiple Airlines
Tue 11/1112:00SYD - BHD
2 stops39h 15mMultiple Airlines
Deal found 15/9$1,675
Wed 5/1115:40BHD - SYD
2 stops39h 15mMultiple Airlines
Mon 24/1116:35SYD - BHD
2 stops29h 05mMultiple Airlines
Deal found 15/9$1,933
Fri 31/1014:20BFS - SYD
3 stops31h 55mMultiple Airlines
Fri 7/1120:05SYD - BFS
3 stops36h 55mMultiple Airlines
Deal found 16/9$1,942
Thu 6/1106:30BFS - SYD
2 stops29h 00mMultiple Airlines
Fri 21/1106:00SYD - BFS
2 stops36h 40mMultiple Airlines
Deal found 14/9$1,987
Wed 29/1012:25BHD - SYD
2 stops33h 35mAmerican Airlines
Fri 14/1111:20SYD - BHD
2 stops42h 55mAmerican Airlines
Deal found 15/9$1,994
Tue 4/1111:25BHD - SYD
2 stops34h 35mAmerican Airlines
Sun 9/1114:05SYD - BHD
2 stops34h 50mAmerican Airlines
Deal found 15/9$2,005
Thu 6/1110:40BHD - SYD
2 stops35h 20mAmerican Airlines
Fri 21/1117:45SYD - BHD
2 stops34h 30mAmerican Airlines
Deal found 14/9$2,014
Wed 5/1106:30BFS - SYD
3 stops40h 35mMultiple Airlines
Mon 24/1122:00SYD - BFS
3 stops34h 10mMultiple Airlines
Deal found 15/9$2,057
Fri 31/1006:00BFS - SYD
2 stops40h 05mMultiple Airlines
Tue 11/1111:50SYD - BFS
2 stops44h 40mMultiple Airlines
Deal found 15/9$2,117
Thu 6/1117:45BHD - SYD
3 stops38h 35mMultiple Airlines
Fri 21/1121:15SYD - BHD
3 stops33h 00mMultiple Airlines
Deal found 14/9$2,150
Tue 28/1010:40BHD - SYD
2 stops33h 15mBritish Airways
Sat 8/1116:20SYD - BHD
2 stops35h 00mBritish Airways
Deal found 15/9$2,182

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 647,157 searches. Data last updated 17 September 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 29/10

14:35-10:00

2 stops32h 25m

Sydney Kingsford Smith

Wed 5/11

14:20-22:50

3 stops43h 30m

$1,570

BelfastSydney

BFS - SYD

BFSSYD

Belfast Intl

Sat 1/11

08:50-10:00

2 stops38h 10m

Sydney Kingsford Smith

Tue 11/11

12:00-20:15

2 stops43h 15m

$1,653

BelfastSydney

BFS - SYD

BFSSYD

Belfast Intl

Thu 6/11

06:30-22:30

2 stops29h 00m

Sydney Kingsford Smith

Fri 21/11

06:00-07:40

2 stops36h 40m

$1,987

BelfastSydney

BHD - SYD

BHDSYD

Belfast City

Tue 4/11

11:25-09:00

2 stops34h 35m

Sydney Kingsford Smith

Fri 14/11

11:20-19:15

2 stops42h 55m

$1,994

BelfastSydney

BHD - SYD

BHDSYD

Belfast City

Wed 5/11

07:25-13:05

3 stops42h 40m

Sydney Kingsford Smith

Mon 24/11

22:00-20:30

3 stops33h 30m

$2,029

BelfastSydney

BFS - SYD

BFSSYD

Belfast Intl

Wed 5/11

06:30-10:05

3 stops40h 35m

Sydney Kingsford Smith

Mon 24/11

22:00-21:10

3 stops34h 10m

$2,057

BelfastSydney

BFS - SYD

BFSSYD

Belfast Intl

Fri 31/10

06:00-09:05

2 stops40h 05m

Sydney Kingsford Smith

Tue 11/11

11:50-21:30

2 stops44h 40m

$2,117

BelfastSydney

BHD - SYD

BHDSYD

Belfast City

Tue 28/10

10:40-06:55

2 stops33h 15m

Sydney Kingsford Smith

Sat 8/11

16:20-16:20

2 stops35h 00m

$2,182

BelfastSydney

BHD - SYD

BHDSYD

Belfast City

Tue 28/10

10:40-06:55

2 stops33h 15m

Sydney Kingsford Smith

Wed 12/11

16:20-13:30

2 stops32h 10m

$2,182

BelfastSydney

BHD - SYD

BHDSYD

Belfast City

Tue 28/10

10:40-06:55

2 stops33h 15m

Sydney Kingsford Smith

Thu 13/11

16:20-13:30

2 stops32h 10m

$2,182

Flights are sorted by cheapest return flights first.

Deals found on 14/9

Showing 1-10 of 27 results
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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, May is the cheapest month in which you can book a flight from Belfast to Sydney (average of $129). Flying from Belfast to Sydney in October is currently the most expensive (average of $171). 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 17 September 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Belfast to Sydney as you normally would.

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?

    Most people fly into Sydney Kingsford Smith (SYD) if they book a flight to Sydney from Belfast. On average, Kingsford Smith has 0 inbound flights from Belfast per day from 0 airlines. Sydney Kingsford Smith is conveniently located just 7.5 km from Sydney’s city centre.

  • How long is the flight from Belfast to Sydney?

    Airlines like American Airlines and British Airways fly from Belfast to Sydney in about 33h 15m. The time it takes to get you to your destination can typically vary by up to 1h 20m. The distance from Belfast to Sydney is about 17094 km. This flight may include one or multiple stops.

  • 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, May is the cheapest month in which you can book a flight from Belfast to Sydney (average of $129). Flying from Belfast to Sydney in October is currently the most expensive (average of $171). 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
Parramatta
Wollongong
Katoomba
Penrith
Manly
Terrigal
Lithgow
Randwick
Bondi Beach
Coogee
Cronulla
Leura

Browse thousands of different options on Cheapflights for your next trip

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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

Fly with Cheapflights

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

900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to Sydney from Belfast today with Cheapflights!

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

Cheapflights simply makes it quick and affordable to book flights from Belfast to Sydney by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

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?

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Sydney from Belfast today and book when prices fit your budget.

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