BFS - SYD

£490 Find Cheap Flights from Belfast Intl Airport 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 Intl to Sydney departing on 12/9. 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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Flights Deals

Cheap Flights from Belfast Intl to Sydney (BFS-SYD)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights from Belfast Intl 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 Intl to Sydney

Mon, 22 Sep - Sat, 4 Oct
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06:45 - 09:00BFS-SYD
41h 15m2 stops
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11:00 - 10:05SYD-BFS
56h 05m2 stops
Mon, 22 Sep - Sat, 4 Oct
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06:10 - 09:00BFS-SYD
41h 50m2 stops
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11:00 - 22:25SYD-BFS
44h 25m2 stops
Tue, 30 Dec - Sun, 18 Jan
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06:00 - 10:00BFS-SYD
41h 00m2 stops
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12:00 - 18:15SYD-BFS
41h 15m2 stops
Mon, 29 Dec - Sun, 18 Jan
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06:30 - 10:00BFS-SYD
40h 30m2 stops
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21:30 - 20:10SYD-BFS
33h 40m2 stops
Mon, 22 Sep - Sat, 4 Oct
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06:10 - 19:25BFS-SYD
28h 15m2 stops
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21:15 - 23:05SYD-BFS
34h 50m3 stops
Mon, 22 Sep - Sat, 4 Oct
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08:15 - 07:20BFS-SYD
38h 05m3 stops
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21:15 - 23:05SYD-BFS
34h 50m3 stops
£1,042
Find Deal
Fri, 12 Sep - Fri, 19 Sep
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06:05 - 06:10BFS-SYD
39h 05m3 stops
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09:15 - 22:35SYD-BFS
46h 20m3 stops
£1,127
Find Deal
Fri, 12 Sep - Fri, 19 Sep
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06:05 - 06:10BFS-SYD
39h 05m3 stops
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15:40 - 10:55SYD-BFS
28h 15m2 stops
£1,134
Find Deal
Tue, 30 Dec - Sun, 18 Jan
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06:25 - 09:15BFS-SYD
39h 50m3 stops
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14:20 - 18:55SYD-BFS
39h 35m3 stops
£1,135
Find Deal
Tue, 30 Dec - Sun, 18 Jan
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06:25 - 09:15BFS-SYD
39h 50m3 stops
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12:00 - 12:50SYD-BFS
35h 50m2 stops
£1,147
Find Deal
Booking Insights

KAYAK's insights & trends for Belfast Intl to Sydney flights

Get data-powered insights and trends into flights from Belfast Intl 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 Intl Airport to Sydney?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Belfast Intl Airport 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 Intl Airport to Sydney is April, where tickets cost £1,105 (return) on average. On the other hand, the most expensive months are December and July, where the average cost of round-trip tickets is £1,541 and £1,527 respectively.


Good to know - Cheap tickets from Belfast Intl Airport to Sydney

Low seasonJuly
Cheapest flight£490
Best time to beat the crowds but there is an average 21% increase in price.
Most popular time to fly and prices are also 5% lower on average.
Flight from Belfast Intl Airport to Sydney

When to book flights from Belfast Intl to Sydney

Are your dates flexible? Find out the best times to travel from Belfast Intl 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 Belfast Intl Airport to Sydney flights

  • What is the cheapest flight from Belfast Intl Airport to Sydney?

    In the last 3 days, the lowest price for a flight from Belfast Intl Airport to Sydney was £653 for a one-way ticket and £1,125 for a return.

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

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

  • How does KAYAK find such low prices on flights from Belfast Intl Airport 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 Intl Airport to Sydney.

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

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

  • What is the Hacker Fare option on flights from Belfast Intl Airport 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 Intl Airport with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Belfast Intl Airport 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 Intl Airport 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 Intl 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 Intl 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 7217 reviews
6.3Food
6.7Comfort
6.4Entertainment
6.9Boarding
7.6Crew
Airline reviews

Check in was not the greatest as had to talk to an agent to clarify things and then he transferred us to another agent who had difficulty processing my credit card as there was a system glitch and not a card error.

4.0 OkayAnonymous, Jul 2025LHR - IAD
Read more British Airways reviews

Check in was not the greatest as had to talk to an agent to clarify things and then he transferred us to another agent who had difficulty processing my credit card as there was a system glitch and not a card error.

All good. Loo’s weren’t great and as clean as i would like.

A great flight. The crew was excellent too. Of particular note of excellence was the gluten-free meal which was one of the best offerings I’ve ever had on a plane. Outstanding work, BA chefs.

I was put into business class. Wow! My flight attendant was great! The food amazing’

The gate at London Gatwick had confusing signs for the different zones and the staff seemed harried because people didn't know when it was their turn to come to the desk. Plus, with there were too many carry-on bag travelers, myself included. The charge scheme for checking bags is frustrating. If you travel light, you want the freedom to leave as soon as you deplane. When you are forced to gate-check your bag simply because the flight is fully booked, you lose whatever time you'd hoped to save because you're still stuck waiting for your bag to come off the conveyor belt.

I got stuffed on both flights into terrible seats. Second flight the seat didn’t even recline and fit s tall person, that’s very uncomfortable.

I arrived at Bridgetown only to fins that a suitcase was missing. It was left at Manchester. I had to wait wait 2 days before deciding on going to collect from the airport personally. I am not happy about paying for baggage at the airport. This I thought was included in the price of the ticket. Who goes away for 2 weeks and does not bring luggage. This was a total rip off and I am not happy. I need someone to contact me before returning so that I don't have to pay all over again to return homde.

Boarding market okay just because of the delay we had, but not related to the crew in any way…

Both the flight from/to San Diego and London went very well. There were lots of movies from which to choose for entertainment, the food was nice, and the flight departure and landing times were good to minimize jet lag.

Not so good with their baggage handling as they damaged one of my check in luggage

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

Information on your arrival and departure airports

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