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Cheap flights from Sydney to Belfast Intl Airport from $929

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 31/5. Fares are subject to change and may not be available on all flights or dates of travel.
SYD — BFS
24 Apr — 1 May1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Sydney to Belfast Intl

Enter your travel dates to find the best prices.

Cheapest flights from Sydney to Belfast Intl
Explore the most affordable flight options available from Sydney to Belfast Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 25 March 2026.

Fri 8/515:40
SYD
-
BFS
2 stops29h 15m
Multiple Airlines
Fri 15/517:05
BFS
-
SYD
2 stops28h 05m
Multiple Airlines
Deal found 24/3$1,842
Sun 12/415:40
SYD
-
BFS
2 stops39h 10m
Multiple Airlines
Fri 17/407:05
BFS
-
SYD
2 stops38h 05m
Multiple Airlines
Deal found 20/3$2,000
Sat 23/520:50
SYD
-
BFS
2 stops35h 35m
Multiple Airlines
Fri 12/606:05
BFS
-
SYD
2 stops28h 20m
Multiple Airlines
Deal found 22/3$2,049
Tue 5/520:45
SYD
-
BFS
2 stops33h 10m
Multiple Airlines
Tue 12/506:15
BFS
-
SYD
2 stops25h 55m
Multiple Airlines
Deal found 21/3$2,334
Mon 4/515:40
SYD
-
BFS
2 stops27h 00m
Multiple Airlines
Mon 11/515:35
BFS
-
SYD
2 stops39h 50m
Multiple Airlines
Deal found 20/3$3,784

Find flight deals from Sydney to Belfast Intl

Discover tips and strategies to find the most affordable flight options for your journey from Sydney (SYD) to Belfast Intl (BFS). 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 25 March 2026.

Round-trip from

$1,842

One-way from

$929

Popular in

July

Cheapest in

October

Average price

$3,077
8/5-15/5
  • 8/5-15/5
  • 4 total stops
  • 57h 20m total
  • Sydney to Belfast
Search Deals
31/5
  • 31/5
  • 3 total stops
  • 41h 30m total
  • Sydney to Belfast
Search Deals
Highest demand for flights based on searches. 14% potential increase in price ($575 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($165 potential savings vs. average return price).
Search Deals
Average for round-trip flights in March 2026
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Sydney to Belfast Intl 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 25 March 2026.
Use the filters below to find and compare flights from Sydney to Belfast Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight
Fastest return journey

SydneyBelfast

SYD - BFS

SYDBFS

Sydney Kingsford Smith

Fri 8/5

15:40-11:55

2 stops29h 15m

Belfast Intl

Fri 15/5

17:05-06:10

2 stops28h 05m

$1,842

SydneyBelfast

SYD - BFS

SYDBFS

Sydney Kingsford Smith

Sun 12/4

15:40-21:50

2 stops39h 10m

Belfast Intl

Fri 17/4

07:05-06:10

2 stops38h 05m

$2,000

SydneyBelfast

SYD - BFS

SYDBFS

Sydney Kingsford Smith

Sat 23/5

20:50-23:25

2 stops35h 35m

Belfast Intl

Fri 12/6

06:05-19:25

2 stops28h 20m

$2,049

SydneyBelfast

SYD - BFS

SYDBFS

Sydney Kingsford Smith

Tue 5/5

20:45-20:55

2 stops33h 10m

Belfast Intl

Tue 12/5

06:15-17:10

2 stops25h 55m

$2,334

SydneyBelfast

SYD - BFS

SYDBFS

Sydney Kingsford Smith

Mon 4/5

15:40-09:40

2 stops27h 00m

Belfast Intl

Mon 11/5

15:35-16:25

2 stops39h 50m

$3,784
Cheapest one-way
Fastest single journey

SydneyBelfast

SYD - BFS

SYDBFS

Sydney Kingsford Smith

Sun 31/5

15:40-18:25

2 stops35h 45m

$933

SydneyBelfast

SYD - BFS

SYDBFS

Sydney Kingsford Smith

Mon 13/7

20:35-23:20

3 stops35h 45m

$946

Flights are sorted by cheapest return flights first.

Deals found on 24/3

Sorted by cheapest first

Best time to book a flight from Sydney to Belfast Intl

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

Reviews of airlines servicing Belfast Intl

Get insights into the airlines that provide service to Belfast Intl. 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 Belfast Intl. Reviews last updated 25 March 2026.
Check out reviews from past customers who have flown with British Airways from Sydney to Belfast Intl Airport 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.
British Airways
6.7
Okay
7,819 reviews
Check prices

Crew

7.6

Boarding

6.9

Food

6.4

Entertainment

6.4

Overall

6.7

Comfort

6.8

Reviews

1 / 20
10.0
Excellent

Viorica,Mar 2026

PHX - LHR

The food lately is just from poor to very poor. I bealeave that you can serve less quantities for more quality food. Exemple : at breakfast : omlete and vegetarian omlete ....I beleave with less work less personel could be provide some hummus and carrots and some boiled egss plus whatever snacks or drinks you wish....... Thank you in advance
British Airways
6.7
Okay
7,819 reviews
British Airways
6.7
Okay
7,819 reviews
Check prices

Crew

7.6

Boarding

6.9

Food

6.4

Entertainment

6.4

Overall

6.7

Comfort

6.8

Reviews

1 / 20
10.0
Excellent

Viorica,Mar 2026

PHX - LHR

The food lately is just from poor to very poor. I bealeave that you can serve less quantities for more quality food. Exemple : at breakfast : omlete and vegetarian omlete ....I beleave with less work less personel could be provide some hummus and carrots and some boiled egss plus whatever snacks or drinks you wish....... Thank you in advance

Related info for your journey

Find useful and relevant information for your journey from Sydney to Belfast Intl. 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 from for flights from Sydney to Belfast Intl?

    Sydney Kingsford Smith (SYD), located 7.5 km from the city centre, is the airport you fly out of when you book flights from Sydney to Belfast Intl. 1 airline have flights from Kingsford Smith to Belfast Intl on a regular basis. Booking flights from Sydney Kingsford Smith to Belfast Intl should not be difficult; the airport handles an average of 0 outbound flights to Belfast Intl per day.

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

    According to our current data, British Airways ($1,828), offers the cheapest pricing from Sydney to Belfast Intl Airport. Users have found that British Airways is 20% cheaper than the other options available to this destination.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Sydney to Belfast Intl 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

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Alternative routes for Sydney to Belfast Intl

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

Top airline flying from Sydney to Belfast Intl

Discover the top airline that operate flights from Sydney to Belfast Intl. 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 647,157 searches. Data last updated 25 March 2026.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$1,828Average$2,136FlexibilityNo cancel feeOn-time70%
Search British Airways flights

Fly with Cheapflights

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

Cheapflights helps you search for flights from Sydney to Belfast Intl via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

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

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

Yes! Cheapflights helps users easily find flights from Sydney to Belfast Intl with no change fees.

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

Yes, Cheapflights offers price alerts on Sydney to Belfast Intl flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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