Cheap flights from Belfast Intl Airport to Sydney from $1,838

This is the cheapest return flight price found by a momondo user in the last 72 hours by searching for a flight from Belfast Intl Airport to Sydney departing on 6/10. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult

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Find the cheapest flights from Belfast Intl Airport to Sydney (BFS-SYD)

Cheap return flights

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15:30 - 10:45BFS-SYD
33h 15m3 stops
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13:50 - 23:00SYD-BFS
43h 10m3 stops
$1,838
Find Deal
Mon, 6 Oct - Mon, 13 Oct
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15:30 - 10:45BFS-SYD
33h 15m3 stops
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16:40 - 11:20SYD-BFS
28h 40m2 stops
$2,021
Find Deal
Mon, 6 Oct - Mon, 13 Oct
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06:45 - 11:00BFS-SYD
42h 15m2 stops
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14:05 - 23:00SYD-BFS
42h 55m2 stops
$2,732
Find Deal
Mon, 6 Oct - Mon, 13 Oct

momondo Fare Finder

 
Customise your flight search to find flights from Belfast Intl Airport to Sydney 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 25 August 2025.
Use the filters below to find and compare flights from Belfast Intl Airport to Sydney that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

BelfastSydney

BFS - SYD

BFSSYD

Belfast Intl

Mon 6/10

15:30-10:45

3 stops33h 15m

Sydney Kingsford Smith

Mon 13/10

13:50-23:00

3 stops43h 10m

$1,838

BelfastSydney

BFS - SYD

BFSSYD

Belfast Intl

Mon 6/10

15:30-10:45

3 stops33h 15m

Sydney Kingsford Smith

Mon 13/10

16:40-11:20

2 stops28h 40m

$2,021

BelfastSydney

BFS - SYD

BFSSYD

Belfast Intl

Mon 6/10

06:45-11:00

2 stops42h 15m

Sydney Kingsford Smith

Mon 13/10

14:05-23:00

2 stops42h 55m

$2,732

Flights are sorted by cheapest return flights first.

Sorted by cheapest first

See travel insights to Sydney from

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

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 month to fly to Sydney?

The month of November is, on average, the cheapest month to fly to Sydney from Belfast Intl Airport, with most prices found around $2,255. If you aren’t able to travel to Sydney during the month of November, then flying in April is also cheap. Prices for this month can be found on momondo for an average of $2,266.

When to book flights from Belfast Intl Airport to Sydney

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

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

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

Direct flights

None
There are no direct flights from Belfast Intl Airport to Sydney. There are no popular flight routes from Belfast Intl Airport to Sydney.
  • How far is Belfast Intl to Sydney Kingsford Smith by plane?

    A flight from Belfast Intl to Sydney Kingsford Smith will travel around 17102.7 km. 33h 15m is a normal flight duration for this route.

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

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

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

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and stopovers. It is recommended that you verify with the airline you are booking with for travel from Belfast Intl Airport to Sydney Kingsford Smith Airport.

  • What documentation or ID do you need to fly to Sydney Kingsford Smith Airport?

    The required travel and health documents for your Sydney Kingsford Smith 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 Sydney Kingsford Smith Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Travelling to a place near Sydney?

Book flights to Sydney if you plan to visit one of these locations
Parramatta
Wollongong
Terrigal
Katoomba
Penrith
Lithgow
Manly
Bondi Beach
Leura
Coogee
Randwick
Cronulla
Charlestown
Newport
Swansea

Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Belfast to Sydney. momondo saves you time and could save you money on your trip.

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

All flight searches from Belfast to Sydney on momondo can be filtered to show those which offer flexible booking policies.

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

Once you have performed a search for Belfast to Sydney flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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

Yes momondo offers price alerts on flights to Sydney from Belfast. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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1 adult
Sat 30/8
Sat 6/9

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