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Cheap flights from Belfast Intl Airport to Sydney from £483

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 21/9. Fares are subject to change and may not be available on all flights or dates of travel.
BFS — SYD
8 Jul — 15 Jul1
1 adult
1 adult, Economy, 0 bags

Cheap 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 8 June 2026.

Mon 6/708:15
BFS
-
SYD
2 stops39h 45m
Multiple Airlines
Mon 20/720:30
SYD
-
BFS
2 stops35h 05m
Multiple Airlines
Deal found 8/6£1,065
Wed 1/708:10
BFS
-
SYD
2 stops42h 35m
Multiple Airlines
Fri 31/714:05
SYD
-
BFS
2 stops39h 55m
Multiple Airlines
Deal found 6/6£1,404
Wed 16/1207:55
BFS
-
SYD
2 stops35h 40m
Multiple Airlines
Fri 8/110:20
SYD
-
BFS
2 stops46h 40m
Multiple Airlines
Deal found 5/6£2,280

Find 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 8 June 2026.

Round-trip from

£1,065

One-way from

£483

Popular in

July

Cheapest in

November

Average price

£1,124
6/7-20/7
  • 6/7-20/7
  • 4 total stops
  • 74h 50m total
  • Belfast to Sydney
Search Deals
21/9
  • 21/9
  • 3 total stops
  • 51h 30m total
  • Belfast to Sydney
Search Deals
Highest demand for flights based on searches. 12% potential increase in price (£145 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease (£48 potential savings vs. average return price).
Search Deals
Average for round-trip flights in June 2026
Search Deals

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 8 June 2026.
Use the filters below to find and compare flights from Belfast Intl Airport to Sydney that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight
Fastest return journey

BelfastSydney

BFS - SYD

BFSSYD

Belfast Intl

Mon 6/7

08:15-09:00

2 stops39h 45m

Sydney Kingsford Smith

Mon 20/7

20:30-22:35

2 stops35h 05m

£1,065

BelfastSydney

BFS - SYD

BFSSYD

Belfast Intl

Wed 1/7

08:10-11:45

2 stops42h 35m

Sydney Kingsford Smith

Fri 31/7

14:05-21:00

2 stops39h 55m

£1,404
Cheapest one-way
Fastest single journey

BelfastSydney

BFS - SYD

BFSSYD

Belfast Intl

Mon 21/9

18:50-07:20

3 stops51h 30m

£483

Flights are sorted by cheapest return flights first.

Deals found on 6/6

Sorted by cheapest first

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

How much does it cost for a return flight from Belfast Intl Airport 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 8 June 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
3,727 reviews
Check prices

Overall

7.4

Comfort

7.3

Food

7.3

Entertainment

7.3

Boarding

7.5

Crew

7.9

Reviews

1 / 20
2.0
Mediocre

Tariq,Jun 2026

DOH - SEA

My experience was not satisfactory. The check-in and boarding counter process was extremely slow, which caused significant delays and frustration. In addition, I had pre-booked seats for myself and my wife through the app. However, when the boarding passes were issued, we were assigned different seats. My wife was assigned Seat 16, while I was assigned Seat 40. This was very disappointing, as we had specifically selected seats together when making our booking. Overall, the experience was frustrating, and I would appreciate an explanation as to why our pre-selected seats were not honored.
Qatar Airways
7.4
Good
3,727 reviews
Qatar Airways
7.4
Good
3,727 reviews
Check prices

Overall

7.4

Comfort

7.3

Food

7.3

Entertainment

7.3

Boarding

7.5

Crew

7.9

Reviews

1 / 20
2.0
Mediocre

Tariq,Jun 2026

DOH - SEA

My experience was not satisfactory. The check-in and boarding counter process was extremely slow, which caused significant delays and frustration. In addition, I had pre-booked seats for myself and my wife through the app. However, when the boarding passes were issued, we were assigned different seats. My wife was assigned Seat 16, while I was assigned Seat 40. This was very disappointing, as we had specifically selected seats together when making our booking. Overall, the experience was frustrating, and I would appreciate an explanation as to why our pre-selected seats were not honored.
British Airways
6.7
Okay
8,028 reviews
Qatar Airways
7.4
Good
3,727 reviews
Check prices

Overall

7.4

Comfort

7.3

Food

7.3

Entertainment

7.3

Boarding

7.5

Crew

7.9

Reviews

1 / 20
2.0
Mediocre

Tariq,Jun 2026

DOH - SEA

My experience was not satisfactory. The check-in and boarding counter process was extremely slow, which caused significant delays and frustration. In addition, I had pre-booked seats for myself and my wife through the app. However, when the boarding passes were issued, we were assigned different seats. My wife was assigned Seat 16, while I was assigned Seat 40. This was very disappointing, as we had specifically selected seats together when making our booking. Overall, the experience was frustrating, and I would appreciate an explanation as to why our pre-selected seats were not honored.

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?

    Qatar Airways, at £503, was found to be the cheapest airline from Belfast Intl Airport to Sydney. An alternate airline flying to your destination would be British Airways. Qatar Airways is currently priced 61% 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.

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
Parramatta
Coogee
Manly

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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 8 June 2026.
AirlineCheapestAverageFlexibilityOn-time
Qatar AirwaysCheapest£503Average£1,276FlexibilityNo cancel feeOn-time68%
Search Qatar Airways flights
British AirwaysCheapest£933Average£1,243FlexibilityNo cancel feeOn-time70%
Search British Airways flights

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

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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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