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Cheap flights from Cardiff to Sydney from £503

CWL — SYD
6 Nov — 13 Nov1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Cardiff to Sydney

Enter your travel dates to find the best prices.

Cheapest flights from Cardiff to Sydney

Wed 18/1110:20 -
2 stops34h 15m
Wed 25/1116:30 -
2 stops28h 15m
Deal found 4/10£1,201
Wed 18/1117:30 -
3 stops26h 55m
Wed 25/1121:55 -
2 stops46h 55m
Deal found 4/10£1,214
Mon 9/1110:20 -
3 stops34h 05m
Sun 15/1111:40 -
2 stops33h 10m
Deal found 6/10£1,235
Sun 1/1110:20 -
2 stops33h 15m
Thu 26/1116:30 -
2 stops35h 30m
Deal found 2/10£1,252
Tue 3/1117:30 -
2 stops39h 35m
Tue 10/1122:15 -
2 stops46h 30m
Deal found 6/10£1,288
Tue 3/1110:20 -
2 stops40h 15m
Tue 10/1122:15 -
2 stops46h 30m
Deal found 6/10£1,322

Find flight deals from Cardiff to Sydney

Round-trip from

£1,201

One-way from

£503

Popular in

January

Cheapest in

May

Average price

£1,296
KLM
  • KLM
  • 18/11-25/11
  • 4 total stops
  • 62h 30m total
  • Cardiff to Sydney
Search Deals
31/12-31/12
  • 31/12-31/12
  • 3 total stops
  • 58h 00m total
  • Cardiff to Sydney
Search Deals
Highest demand for flights based on searches. 14% potential increase in price (£189 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (£43 potential savings vs. average return price).
Search Deals
Average for round-trip flights in October 2026
Search Deals

Cheapflights Fare Finder

 
Use the filters below to find and compare flights from Cardiff to Sydney that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

CardiffSydney

CWL Cardiff Wales - SYD Sydney Kingsford Smith

CWLSYD

Cardiff Wales

Thu 31/12

13:25-10:25

3 stops58h 00m

Sydney Kingsford Smith

Wed 31/12

00:00-15:00

Nonstop0h 00m

£503

CardiffSydney

CWL Cardiff Wales - SYD Sydney Kingsford Smith

CWLSYD

Cardiff Wales

Wed 20/1

17:30-06:30

3 stops50h 00m

Sydney Kingsford Smith

Wed 31/12

00:00-15:00

Nonstop0h 00m

£878
Fastest return journey

CardiffSydney

CWL Cardiff Wales - SYD Sydney Kingsford Smith

CWLSYD

Cardiff Wales

Wed 20/1

10:20-07:35

2 stops34h 15m

Sydney Kingsford Smith

Wed 31/12

00:00-15:00

Nonstop0h 00m

£967

CardiffSydney

CWL Cardiff Wales - SYD Sydney Kingsford Smith

CWLSYD

Cardiff Wales

Wed 18/11

17:30-07:25

3 stops26h 55m

Sydney Kingsford Smith

Wed 25/11

21:55-09:50

2 stops46h 55m

£1,214

CardiffSydney

CWL Cardiff Wales - SYD Sydney Kingsford Smith

CWLSYD

Cardiff Wales

Mon 9/11

10:20-07:25

3 stops34h 05m

Sydney Kingsford Smith

Sun 15/11

11:40-09:50

2 stops33h 10m

£1,235

CardiffSydney

CWL Cardiff Wales - SYD Sydney Kingsford Smith

CWLSYD

Cardiff Wales

Sun 1/11

10:20-06:35

2 stops33h 15m

Sydney Kingsford Smith

Thu 26/11

10:35-17:00

3 stops41h 25m

£1,308

CardiffSydney

CWL Cardiff Wales - SYD Sydney Kingsford Smith

CWLSYD

Cardiff Wales

Fri 15/1

10:20-07:20

2 stops34h 00m

Sydney Kingsford Smith

Fri 12/2

11:40-17:00

2 stops40h 20m

£1,456

CardiffSydney

CWL Cardiff Wales - SYD Sydney Kingsford Smith

CWLSYD

Cardiff Wales

Fri 15/1

17:30-07:25

3 stops26h 55m

Sydney Kingsford Smith

Fri 12/2

11:10-09:45

3 stops33h 35m

£1,507

CardiffSydney

CWL Cardiff Wales - SYD Sydney Kingsford Smith

CWLSYD

Cardiff Wales

Fri 15/1

17:30-07:25

3 stops26h 55m

Sydney Kingsford Smith

Thu 11/2

11:40-09:50

2 stops33h 10m

£1,532

CardiffSydney

CWL Cardiff Wales - SYD Sydney Kingsford Smith

CWLSYD

Cardiff Wales

Wed 31/3

17:15-11:00

2 stops31h 45m

Sydney Kingsford Smith

Fri 16/4

07:55-09:15

2 stops34h 20m

£3,214

Flights are sorted by cheapest return flights first.

Deals found on 4/10

Sorted by cheapest first

Best time to book a flight from Cardiff to Sydney

Have a flexible travel schedule? Discover the best time to fly to Sydney from Cardiff with our price prediction graph.
Estimated return price

Cheapflights Insights

Everything you need to know about your flight from Cardiff to Sydney

How much does it cost for a return flight from Cardiff to Sydney?

Airfare is below average for this route at the moment.

Cardiff to Sydney flights typically cost between £1,257 and £1,330 in November.
The cheapest return price found within the last 5 days was £1,201 on Multiple Airlines (18 Nov–25 Nov).

Reviews of airlines servicing Sydney

Get a feel of what it's like to fly with KLM and Etihad Airways from Cardiff to Sydney by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
KLM
7.8
Good
1,580 reviews
Check prices

Overall

7.8

Boarding

7.8

Food

7.3

Entertainment

7.2

Crew

8.4

Comfort

7.7

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2026

OKC - ATL

Flight was ok - difficult as I had seat next to bathroom.. Food awful
KLM
7.8
Good
1,580 reviews
KLM
7.8
Good
1,580 reviews
Check prices

Overall

7.8

Boarding

7.8

Food

7.3

Entertainment

7.2

Crew

8.4

Comfort

7.7

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2026

OKC - ATL

Flight was ok - difficult as I had seat next to bathroom.. Food awful
Etihad Airways
7.3
Good
1,539 reviews
KLM
7.8
Good
1,580 reviews
Check prices

Overall

7.8

Boarding

7.8

Food

7.3

Entertainment

7.2

Crew

8.4

Comfort

7.7

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2026

OKC - ATL

Flight was ok - difficult as I had seat next to bathroom.. Food awful

Related info for your journey

  • How long is the flight from Cardiff to Sydney?

    There are many flights that can get you from Cardiff to Sydney in 26h 55m. Fly via KLM to get the fastest option. Airlines will cover a distance of 10677 mi.

  • What are the cheapest airlines flying from Cardiff to Sydney round-trip?

    Cheapflights users have booked flights from Cardiff to Sydney round-trip from £752. Another airline that can offer you cheap pricing is KLM. Users have found that Etihad Airways is 46% cheaper than the other options available to this destination.

  • Can I find deals for flights from Cardiff to Sydney that include hotel bookings?

    Yes. In addition to deals on Cardiff to Sydney flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Cardiff to Sydney?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Cardiff to Sydney.

  • Can I find deals for business class flights from Cardiff to Sydney?

    Yes. Cheapflights offers flight deals from Cardiff to Sydney 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 Sydney?

Book flights to Sydney if you plan to visit one of these locations
Parramatta
Wollongong
Bondi Beach
Coogee

Browse thousands of different options on Cheapflights for your next trip

Alternative routes for Cardiff to Sydney

Manchester to Sydney flights
Manchester to Coolangatta flights
Bristol to Sydney flights

Top 2 airlines flying from Cardiff to Sydney

AirlineCheapestAverageFlexibilityOn-time
Etihad AirwaysCheapest£752Average£1,042FlexibilityNo cancel feeOn-time75%
Search Etihad Airways flights
KLMCheapest£1,170Average£1,420FlexibilityNo cancel feeOn-time75%
Search KLM flights

Fly with Cheapflights

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When you search for this flight from Cardiff to Sydney, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

Why should you use Cheapflights to find cheap flight tickets from Cardiff to Sydney?

Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from Cardiff to Sydney for you. Better yet — we are completely free to use.

Can Cheapflights find flights from Cardiff to Sydney with no change fees?

Users can book flights with no change fees policies with our dedicated filters. Book flights from Cardiff to Sydney flexibly with Cheapflights today.

Can Cheapflights notify me if prices for flights from Cardiff to Sydney become cheaper?

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Sydney from Cardiff today and book when prices fit your budget.

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