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Cheap flights from Sydney to Belfast Intl Airport from $872

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 1/11. Fares are subject to change and may not be available on all flights or dates of travel.
SYD — BFS
23 Nov — 30 Nov1
1 adult
1 adult, Economy, 0 bags

Cheap 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 24 October 2025.

Round-trip from

$2,038

One-way from

$872

Popular in

July

Cheapest in

June

Average price

$2,078
7/12-14/12
  • 7/12-14/12
  • 5 total stops
  • 68h 30m total
  • Sydney to Belfast
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1/11
  • 1/11
  • 2 total stops
  • 49h 20m total
  • Sydney to Belfast
Search Deals
Highest demand for flights based on searches. 7% potential increase in price ($289 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease ($230 potential savings vs. average return price).
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Average for round-trip flights in October 2025
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Find 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 24 October 2025.

Sun 7/1207:15SYD - BFS
3 stops46h 40mMultiple Airlines
Sun 14/1214:45BFS - SYD
2 stops31h 40mMultiple Airlines
Deal found 22/10$2,108
Fri 5/1220:05SYD - BFS
3 stops36h 55mMultiple Airlines
Fri 12/1214:20BFS - SYD
2 stops32h 55mMultiple Airlines
Deal found 21/10$2,469
Sat 6/1206:35SYD - BFS
3 stops46h 55mMultiple Airlines
Sat 13/1222:25BFS - SYD
3 stops35h 25mMultiple Airlines
Deal found 22/10$2,727
Thu 18/1206:35SYD - BFS
3 stops43h 00mMultiple Airlines
Sun 21/1214:45BFS - SYD
3 stops31h 40mMultiple Airlines
Deal found 22/10$3,788

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 24 October 2025.
Use the filters below to find and compare flights from Sydney to Belfast Intl Airport that are best for you.

Fly from

Sydney

Fly to

Belfast Intl

Route

Depart

Return

Price

SydneyBelfast

SYD - BFS

SYDBFS

Sydney Kingsford Smith

Sun 7/12

20:05-21:55

3 stops36h 50m

Belfast Intl

Sun 14/12

14:45-09:25

3 stops31h 40m

$2,057

SydneyBelfast

SYD - BFS

SYDBFS

Sydney Kingsford Smith

Fri 5/12

20:05-22:00

3 stops36h 55m

Belfast Intl

Fri 12/12

14:20-10:15

2 stops32h 55m

$2,469

SydneyBelfast

SYD - BFS

SYDBFS

Sydney Kingsford Smith

Sat 6/12

06:35-18:30

3 stops46h 55m

Belfast Intl

Sat 13/12

22:25-20:50

3 stops35h 25m

$2,727

SydneyBelfast

SYD - BFS

SYDBFS

Sydney Kingsford Smith

Thu 18/12

06:35-14:35

3 stops43h 00m

Belfast Intl

Sun 21/12

14:45-09:25

3 stops31h 40m

$3,788

SydneyBelfast

SYD - BFS

SYDBFS

Sydney Kingsford Smith

Sat 1/11

21:30-11:50

2 stops49h 20m

$872

SydneyBelfast

SYD - BFS

SYDBFS

Sydney Kingsford Smith

Mon 15/12

17:45-10:05

3 stops51h 20m

$1,298

Flights are sorted by cheapest return flights first.

Deals found on 21/10

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.

Cheapflights Insights

Everything you need to know about your flight from Sydney to Belfast Intl Airport

What is the cheapest time of day to fly from SYD to BFS?

Find hourly flight availability from Sydney to Belfast Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 24 October 2025.

Unlike in the evening, when flights are generally more expensive, you can save up to 42% on flights from Sydney to Belfast Intl Airport by exploring options for tickets at midday.

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 24 October 2025.
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
7,468 reviews
Check prices

Entertainment

6.4

Boarding

6.9

Overall

6.7

Comfort

6.7

Food

6.3

Crew

7.6

Reviews

1 / 20
2.0
Mediocre

Anonymous,Aug 2025

ALG - LGW

Didn't like anything from this flight starting with the lady at the counter. Nasty attitude.
British Airways
6.7
Okay
7,468 reviews
British Airways
6.7
Okay
7,468 reviews
Check prices

Entertainment

6.4

Boarding

6.9

Overall

6.7

Comfort

6.7

Food

6.3

Crew

7.6

Reviews

1 / 20
2.0
Mediocre

Anonymous,Aug 2025

ALG - LGW

Didn't like anything from this flight starting with the lady at the counter. Nasty attitude.

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 ($1,621), offers the cheapest pricing from Sydney to Belfast Intl Airport. Users have found that British Airways is 28% 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

Travelling to a place near Belfast Intl Airport?

Book flights to Belfast Intl Airport if you plan to visit one of these locations
Ballymena

Browse thousands of different options on Cheapflights for your next trip

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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 24 October 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$1,621Average$2,217FlexibilityNo cancel feeOn-time70%
Search British Airways flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

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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