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Cheap flights from Sydney to Belfast from $1,386

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Sydney to Belfast departing on 5/1. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Cheap return flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
10:05 - 20:40
SYD
-
BFS
43h 35m2 stops
Multiple Airlines Logo
06:10 - 08:25
BFS
-
SYD
41h 15m2 stops
$1,969Multiple Airlines
Wed, 27 May - Thu, 25 Jun

momondo Fare Finder

 
Customise your flight search to find flights from Sydney to Belfast Intl Airport 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, momondo users made 78,305 searches. Data last updated 10 December 2025.
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

SydneyBelfast

SYD - BFS

SYDBFS

Sydney Kingsford Smith

Wed 27/5

10:05-20:40

2 stops43h 35m

Belfast Intl

Thu 25/6

06:10-08:25

2 stops41h 15m

$1,969

SydneyBelfast

SYD - BFS

SYDBFS

Sydney Kingsford Smith

Mon 5/1

10:45-10:20

3 stops58h 35m

$1,386

SydneyBelfast

SYD - BFS

SYDBFS

Sydney Kingsford Smith

Mon 5/1

21:50-16:00

3 stops53h 10m

$1,452

SydneyBelfast

SYD - BFS

SYDBFS

Sydney Kingsford Smith

Mon 5/1

21:50-21:40

2 stops58h 50m

$1,896

SydneyBelfast

SYD - BFS

SYDBFS

Sydney Kingsford Smith

Mon 5/1

21:50-21:40

2 stops58h 50m

$1,967

Flights are sorted by cheapest return flights first.

Sorted by cheapest first

See travel insights to Belfast from

How to get the cheapest flight ticket from Sydney to Belfast Intl Airport

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest day to depart on your flight to Belfast Intl Airport?

Our data shows that Wednesday is the least expensive day to fly to Belfast Intl Airport. Tickets to fly out on this day can be as low as $2,036. When flying out on a Sunday, the most expensive travel day of the week, you can expect to see flight prices from Sydney to Belfast Intl Airport for around $2,405.

What is the cheapest time of day to depart on your flight to Belfast Intl Airport?

According to our data, the cheapest time of day to fly to Belfast Intl Airport is in the afternoon. momondo users have found flights departing from Sydney to Belfast Intl Airport in the afternoon for as low as $2,166. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights in the evening are often more expensive, with an average ticket price of $3,447.

When to book flights from Sydney to Belfast Intl Airport

Are you open to changing your travel dates? Check out the ideal times to fly from Sydney to Belfast Intl Airport according to our flight data. Find out which month and days have the cheapest flights.
Estimated return price

Cheap Sydney to Belfast Intl Airport (SYD to BFS) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Sydney to Belfast Intl Airport

Fastest flight time

31h 10m

Direct flights

None
The fastest flight from Sydney to Belfast Intl Airport takes 31h 10m
There are no direct flights from Sydney to Belfast Intl Airport. There are no popular flight routes from Sydney to Belfast Intl Airport.
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  • How far is Sydney Kingsford Smith to Belfast Intl by plane?

    There are 17102.7 km between Sydney Kingsford Smith and Belfast Intl. 43h 35m is a normal flight duration for this route.

  • When did momondo last update prices for flights from Sydney Kingsford Smith Airport to Belfast Intl Airport?

    Prices for flights from Sydney Kingsford Smith Airport to Belfast Intl Airport were last updated today.

  • How many operators does momondo search for flights from Sydney Kingsford Smith Airport to Belfast Intl Airport?

  • How old do you have to be to fly from Sydney Kingsford Smith Airport to Belfast Intl Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Sydney Kingsford Smith Airport to Belfast Intl Airport.

  • What documentation or ID do you need to fly to Belfast Intl Airport?

    The required travel and health documents for your Belfast Intl Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's licence and a passport valid for six months after your intended arrival at Belfast Intl Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • What is the most popular airline from Sydney to Belfast Intl Airport?

Best airlines flying from Sydney to Belfast Intl Airport

Compare and see reviews for airlines that fly from Sydney to Belfast Intl Airport with momondo
Airline
Rating
Free cancellation
Price
British AirwaysPriceFrom $1,887Free cancellationRating
6.7
7,573 reviews
Search British Airways flights

Why use momondo?

Why should I use momondo to find a flight deal from Sydney to Belfast?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Sydney to Belfast . Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from Sydney to Belfast with flexible booking policies on momondo?

Flights from Sydney to Belfast with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from Sydney to Belfast?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Belfast from Sydney.

I’m not ready to book a flight from Sydney to Belfast right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of Sydney to Belfast flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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