$1,277 Find Cheap Flights from Belfast to Sydney

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Belfast to Sydney departing on 27/7. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy

KAYAK searches hundreds of travel sites at once for deals on flights to Sydney

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Belfast to Sydney, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Belfast to Sydney, as well as popular online travel agencies
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Cheap Flights from Belfast to Sydney

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights from Belfast to Sydney that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent return flight deals from Belfast to Sydney

Mon, 10 Nov - Sun, 23 Nov
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10:20 - 19:05BFS-SYD
45h 45m3 stops
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14:00 - 21:55SYD-BFS
42h 55m3 stops
$1,690
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Mon, 10 Nov - Sun, 23 Nov
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15:10 - 10:00BFS-SYD
31h 50m2 stops
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14:00 - 21:55SYD-BFS
42h 55m3 stops
$1,780
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Mon, 10 Nov - Sun, 23 Nov
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09:40 - 10:00BFS-SYD
37h 20m2 stops
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21:30 - 21:30SYD-BFS
35h 00m2 stops
$1,843
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Mon, 10 Nov - Sun, 23 Nov
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19:30 - 18:50BHD-SYD
36h 20m2 stops
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20:20 - 16:50SYD-BHD
31h 30m2 stops
$1,992
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Tue, 9 Sep - Tue, 30 Sep
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20:55 - 09:00BFS-SYD
51h 05m2 stops
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11:00 - 19:25SYD-BFS
41h 25m2 stops
$2,081
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Tue, 9 Sep - Tue, 30 Sep
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18:15 - 18:00BHD-SYD
38h 45m2 stops
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19:30 - 07:35SYD-BHD
45h 05m2 stops
$2,115
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Sat, 16 Aug - Sat, 23 Aug
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16:50 - 19:25BFS-SYD
41h 35m3 stops
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12:50 - 22:30SYD-BFS
42h 40m3 stops
$2,322
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Tue, 28 Oct - Tue, 2 Dec
British Airways Logo
08:40 - 18:50BHD-SYD
47h 10m2 stops
British Airways Logo
16:20 - 08:25SYD-BHD
27h 05m2 stops
$2,386British Airways
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Tue, 28 Oct - Tue, 2 Dec
British Airways Logo
19:25 - 18:50BHD-SYD
36h 25m2 stops
British Airways Logo
21:40 - 20:15SYD-BHD
33h 35m2 stops
$2,396British Airways
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Mon, 8 Dec - Sun, 21 Dec
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10:20 - 19:50BFS-SYD
46h 30m3 stops
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21:45 - 20:10SYD-BFS
33h 25m3 stops
$2,418
Find Deal
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KAYAK's insights & trends for Belfast to Sydney flights

Get data-powered insights and trends into flights from Belfast to Sydney to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest month to fly from Belfast to Sydney?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Belfast to Sydney, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Belfast to Sydney is November, where tickets cost $2,252 (return) on average. On the other hand, the most expensive months are July and December, where the average cost of round-trip tickets is $3,270 and $3,118 respectively.

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Good to know

Cheapest flight$1,277
Flight from Belfast Intl Airport to Sydney

When to book flights from Belfast to Sydney

Are your dates flexible? Find out the best times to travel from Belfast to Sydney based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated return price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or returns with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Belfast to Sydney

  • What is the cheapest flight from Belfast to Sydney?

    In the last 3 days, the lowest price for a flight from Belfast to Sydney was $839 for a one-way ticket and $1,111 for a return.

  • Which airports will I be using when flying from Belfast to Sydney?

    Belfast is served by 2 major airports and there is only 1 main airport in Sydney. You will leave Belfast from one of these airports: Belfast Intl or Belfast City. You will be arriving at Sydney Kingsford Smith.

  • Which aircraft models fly most regularly from Belfast to Sydney?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Belfast to Sydney?

    SkyTeam, and oneworld are the airline alliances operating flights between Belfast and Sydney, with SkyTeam being the most commonly used for this route.

  • How does KAYAK find such low prices on flights from Belfast to Sydney?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Belfast to Sydney.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Belfast to Sydney?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Sydney from Belfast is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Belfast to Sydney?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly to Sydney with an airline and back to Belfast with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Belfast to Sydney?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Sydney from Belfast up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airline flying from Belfast to Sydney

 
See real verified KAYAK customer reviews for airlines flying from Belfast to Sydney. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Belfast to Sydney? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
6.6
British AirwaysOverall score based on 7093 reviews
7.6Crew
6.4Entertainment
6.8Boarding
6.3Food
6.7Comfort
Airline reviews

After boarding we were waiting in the plane for more than one hour to take off without AC with very high temperature inside

4.0 OkayAnonymous, July 2025LHR - EWR
Read more British Airways reviews

After boarding we were waiting in the plane for more than one hour to take off without AC with very high temperature inside

The flight was an hour late leaving Heathrow. The food was mediocre. When we got to Austin, my husband’s luggage was missing. He filled out information at baggage claim. We are waiting to hear something. His name is Henry Jacob Braunig.

Only for BA because we had to get to Edinburgh at a certain time. Baggage lost, late boarding with only one person checking, again, our passports and boarding passes until the despatch controller had to step in to get us away. Will never fly BA again.

The food was very good and it came multiple times

Flight from LGW to JFK delayed by 4 hrs No explanation given until the pilot said the delay due to planned maintenance on the aircraft

We arrived late to London, and consequently were 5 min. late to be allowed through security for our next flight. Even though dozens of people missed the same flight, BA did not radio ahead to hold open security for an extra 5-10 min. to allow people to get on the flight. This caused an additional 6 hour delay in London after waiting over an hour in Customer Service to get rebooked. They did not have enough staff on hand to help people in a timely manner. Not at all happy with the BA's customer care or customer service.

All service prior to the flight was terrible: online check-in not working, no customer service tel,, multiple airport scanners not working, A huge mess.

CONSTANT ERROR MESSAGE THAT THE WIFI COULD NOT BE PURCHASED DUE TO INABILITY TO CONNECT PAYMENT SYSTEM VIA SATELLITE. THIS HAPPENED IN BOTH DIRECTIONS. THE MAIN REASON I TRAVEL IN PRIORITY IS TO BE ABLE TO WORK FOR WHICH I NEED ACCESS TO INTERNET. .

They lost my luggage. Lady who was helping with it in Austin was rude. Not very helpful!

Waited 3.25 hours in plane only to have the flight cancelled.

Everything you need to know for your flight from Belfast to Sydney

Information on your arrival and departure airports

Sydney (SYD)

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