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Cheap flights from Belfast Intl Airport to Australia from £646

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 5/1. Fares are subject to change and may not be available on all flights or dates of travel.
BFS — SYD
8 Jan — 15 Jan1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Belfast Intl to Australia

Enter your travel dates to find the best prices.

Cheapest flights from Belfast Intl to Australia
Explore the most affordable flight options available from Belfast Intl to Australia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 9 December 2025.

Fri 12/1207:00BFS - PER
3 stops34h 15mMultiple Airlines
Fri 19/1210:30PER - BFS
3 stops33h 40mMultiple Airlines
Deal found 7/12£1,907

Find flight deals from Belfast Intl to Australia

Keep the following information in mind while searching for Belfast Intl to Australia flight deals. Data was last updated 9 December 2025.

Round-trip from

£790

One-way from

£646

Popular in

July

Cheapest in

October

Average price

£1,473
1/3-6/4
  • 1/3-6/4
  • 4 total stops
  • 80h 00m total
  • Belfast to Australia
Search Deals
5/1
  • 5/1
  • 3 total stops
  • 52h 05m total
  • Belfast to Australia
Search Deals
Highest demand for flights based on searches. 8% potential increase in price (£89 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 Intl to Australia 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 9 December 2025.
Use the filters below to find and compare flights from Belfast Intl Airport to Australia that are best for you.

Fly from

Belfast Intl

Fly to

Australia

Route

Depart

Return

Price

BelfastBrisbane

BFS - BNE

BFSBNE

Belfast Intl

Sun 1/3

09:25-09:00

2 stops37h 35m

Brisbane

Mon 6/4

11:00-20:25

2 stops42h 25m

£790

BelfastPerth

BFS - PER

BFSPER

Belfast Intl

Tue 10/3

06:30-04:15

3 stops37h 45m

Perth

Sat 2/5

01:20-22:40

3 stops28h 20m

£861

BelfastSydney

BFS - SYD

BFSSYD

Belfast Intl

Wed 21/1

06:30-06:30

2 stops37h 00m

Sydney Kingsford Smith

Wed 28/1

21:30-22:20

2 stops35h 50m

£885

BelfastSydney

BFS - SYD

BFSSYD

Belfast Intl

Thu 22/1

06:30-10:00

2 stops40h 30m

Sydney Kingsford Smith

Thu 29/1

10:30-22:20

2 stops46h 50m

£983

BelfastPerth

BFS - PER

BFSPER

Belfast Intl

Wed 21/1

20:50-15:55

3 stops35h 05m

Perth

Wed 28/1

17:15-19:35

3 stops34h 20m

£985

BelfastBrisbane

BFS - BNE

BFSBNE

Belfast Intl

Tue 20/1

08:35-09:00

2 stops38h 25m

Brisbane

Tue 27/1

21:00-17:55

2 stops30h 55m

£1,109

BelfastMelbourne

BFS - MEL

BFSMEL

Belfast Intl

Wed 21/1

07:15-05:40

3 stops35h 25m

Melbourne

Wed 28/1

18:20-16:10

2 stops32h 50m

£1,174

BelfastSydney

BFS - SYD

BFSSYD

Belfast Intl

Mon 5/1

20:55-19:20

3 stops35h 25m

Sydney Kingsford Smith

Sat 7/2

21:15-20:15

3 stops34h 00m

£1,606

BelfastMelbourne

BFS - MEL

BFSMEL

Belfast Intl

Mon 5/1

05:45-20:50

3 stops52h 05m

£646

BelfastMelbourne

BFS - MEL

BFSMEL

Belfast Intl

Sun 4/1

05:45-23:45

3 stops55h 00m

£671

Flights are sorted by cheapest return flights first.

Deals found on 7/12

Showing 1-10 of 11 results
1
2

Best time to book a flight from Belfast Intl to Australia

Have a flexible travel schedule? Discover the best time to fly to Australia 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 Australia

What is the cheapest month to book a flight from Belfast Intl Airport to Australia?

Currently, November is the cheapest month in which you can book a flight from Belfast Intl Airport to Australia (average of £278). Flying from Belfast Intl Airport to Australia in August is currently the most expensive (average of £1,143). 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 AU?

Find hourly flight availability from Belfast Intl to Australia. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 9 December 2025.

When flying from Belfast Intl Airport to Australia, the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 17% versus a flight at midday.

Reviews of airlines servicing Australia

Get insights into the airlines that provide service to Australia. 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 Australia. Reviews last updated 9 December 2025.
Get a feel of what it's like to fly with British Airways from Belfast Intl Airport to Australia by reading reviews from past customers. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
British Airways
6.7
Okay
7,571 reviews
Check prices

Comfort

6.7

Boarding

6.9

Crew

7.6

Entertainment

6.4

Food

6.4

Overall

6.7

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
7,571 reviews
British Airways
6.7
Okay
7,571 reviews
Check prices

Comfort

6.7

Boarding

6.9

Crew

7.6

Entertainment

6.4

Food

6.4

Overall

6.7

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 Intl to Australia. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What are the most popular routes from Belfast Intl Airport to Australia?

    While some choose either Belfast Intl - Perth or Belfast Intl - Sydney Kingsford Smith, Belfast Intl - Melbourne is the most popular route from Belfast Intl Airport to Australia.

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

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

  • How can I find direct flights from Belfast Intl to Australia?

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

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

    Yes. Cheapflights offers flight deals from Belfast Intl to Australia 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 Australia?

    Currently, November is the cheapest month in which you can book a flight from Belfast Intl Airport to Australia (average of £278). Flying from Belfast Intl Airport to Australia in August is currently the most expensive (average of £1,143). 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

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Top airline flying from Belfast Intl to Australia

Discover the top airline that operate flights from Belfast Intl to Australia. 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 9 December 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest£985Average£1,176FlexibilityNo cancel feeOn-time70%
Search British Airways flights

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