Cheap flights from Northern Ireland to Australia from £778
This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 13/10. Fares are subject to change and may not be available on all flights or dates of travel.
Cheap flight deals from Northern Ireland to Australia
Keep the following information in mind while searching for Northern Ireland to Australia flight deals. Data was last updated 18 August 2025.
Find flight deals from Northern Ireland to Australia
Cheapest flights from Northern Ireland to AustraliaExplore the most affordable flight options available from Northern Ireland to Australia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 18 August 2025.
Explore the most affordable flight options available from Northern Ireland to Australia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 18 August 2025.
Cheapflights Fare Finder
Use the filters below to find and compare flights from Northern Ireland to Australia that are best for you.
Fly from
Fly to
Route
Depart
Return
Price
BelfastSydney
BHD - SYD
BHDSYD
Belfast City
Mon 13/10
15:25-09:25
2 stops32h 00m
Sydney Kingsford Smith
Mon 10/11
22:00-08:25
2 stops45h 25m
BelfastSydney
BFS - SYD
BFSSYD
Belfast Intl
Mon 13/10
06:10-10:00
2 stops41h 50m
Sydney Kingsford Smith
Mon 10/11
12:00-10:05
2 stops33h 05m
BelfastSydney
BFS - SYD
BFSSYD
Belfast Intl
Sun 21/9
17:30-10:10
3 stops31h 40m
Sydney Kingsford Smith
Tue 14/10
13:50-23:20
3 stops43h 30m
BelfastSydney
BFS - SYD
BFSSYD
Belfast Intl
Wed 3/9
06:15-09:20
3 stops42h 05m
Sydney Kingsford Smith
Tue 30/9
15:40-15:00
2 stops32h 20m
BelfastPerth
BFS - PER
BFSPER
Belfast Intl
Wed 1/10
07:05-19:50
3 stops29h 45m
Perth
Wed 8/10
05:10-22:00
3 stops47h 50m
BelfastSydney
BFS - SYD
BFSSYD
Belfast Intl
Fri 19/9
06:05-06:10
3 stops39h 05m
Sydney Kingsford Smith
Sun 5/10
16:40-10:30
2 stops27h 50m
BelfastSydney
BHD - SYD
BHDSYD
Belfast City
Sun 21/9
07:05-09:00
2 stops40h 55m
Sydney Kingsford Smith
Tue 14/10
12:00-17:10
2 stops39h 10m
BelfastSydney
BHD - SYD
BHDSYD
Belfast City
Fri 19/9
07:00-06:10
3 stops38h 10m
Sydney Kingsford Smith
Sun 5/10
09:40-13:40
3 stops38h 00m
BelfastSydney
BFS - SYD
BFSSYD
Belfast Intl
Sun 7/9
14:55-09:55
2 stops34h 00m
Sydney Kingsford Smith
Tue 30/9
15:40-09:40
2 stops27h 00m
BelfastSydney
BFS - SYD
BFSSYD
Belfast Intl
Wed 1/10
07:05-07:50
3 stops39h 45m
Sydney Kingsford Smith
Wed 8/10
16:40-15:30
2 stops32h 50m
Best time to book a flight from Northern Ireland to Australia
Have a flexible travel schedule? Discover the best time to fly to Australia from Northern Ireland with our price prediction graph.
Cheapflights Insights
Everything you need to know about your flight from Northern Ireland to Australia
What is the cheapest month to book a flight from Northern Ireland to Australia?
Currently, May is the cheapest month in which you can book a flight from Northern Ireland to Australia (average of £985). Flying from Northern Ireland to Australia in July is currently the most expensive (average of £1,723). 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 NIR to AU?
Find hourly flight availability from Northern Ireland 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 18 August 2025.
Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Northern Ireland to Australia as you normally would.
Related info for your journey
Find useful and relevant information for your journey from Northern Ireland to Australia. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Browse thousands of different options on Cheapflights for your next trip
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Alternative routes for Northern Ireland to Australia
See prices for flight routes from nearby airports that may be better suited for you.
Top 2 airlines flying from Northern Ireland to Australia
Discover the top 2 airlines that operate flights from Northern Ireland 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 18 August 2025.
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How does Cheapflights help users find flights from Northern Ireland to Australia?
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Why should you use Cheapflights to find cheap flight tickets from Northern Ireland to Australia?
By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Australia from Northern Ireland.
Can Cheapflights find flights from Northern Ireland to Australia with no change fees?
Cheapflights does show flights with no change fees to all users. To see these options for flights from Northern Ireland to Australia, users can toggle the no change fees filter when performing a flight search.
Can Cheapflights notify me if prices for flights from Northern Ireland to Australia become cheaper?
Not ready to book yet? You can track prices for flights from Northern Ireland to Australia on Cheapflights with our Price Alert feature and get notified when better prices are available.