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Cheap flights from Cardiff to Sydney from $3,186

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/12. Fares are subject to change and may not be available on all flights or dates of travel.
CWL — SYD
30 Nov — 7 Dec1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Cardiff to Sydney

Discover tips and strategies to find the most affordable flight options for your journey from Cardiff (CWL) to Sydney (SYD). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 31 October 2025.

Round-trip from

$3,186

Popular in

July

Cheapest in

April

Average price

$2,418
9/12-16/12
  • 9/12-16/12
  • 6 total stops
  • 71h 15m total
  • Cardiff to Sydney
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Highest demand for flights based on searches. 5% potential increase in price ($255 potential increase over avg. return price).
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Cheapest flight prices on average. 2% potential price decrease ($115 potential savings vs. average return price).
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Average for round-trip flights in October 2025
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Find flight deals from Cardiff to Sydney

Enter your travel dates to find the best prices.

Cheapest flights from Cardiff to Sydney
Explore the most affordable flight options available from Cardiff to Sydney. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 31 October 2025.

Tue 9/1217:25CWL - SYD
3 stops35h 05mMultiple Airlines
Tue 16/1214:20SYD - CWL
3 stops36h 10mMultiple Airlines
Deal found 29/10$3,186
Tue 18/1110:20CWL - SYD
2 stops45h 30mMultiple Airlines
Wed 17/1221:40SYD - CWL
2 stops30h 15mMultiple Airlines
Deal found 29/10$3,642
Sun 14/1217:30CWL - SYD
3 stops38h 50mMultiple Airlines
Sun 21/1221:15SYD - CWL
3 stops30h 30mMultiple Airlines
Deal found 30/10$3,744
Mon 17/1110:20CWL - SYD
2 stops33h 15mMultiple Airlines
Wed 17/1214:30SYD - CWL
2 stops30h 20mMultiple Airlines
Deal found 29/10$4,267
Tue 18/1117:25CWL - SYD
2 stops27h 00mKLM
Tue 16/1211:30SYD - CWL
2 stops33h 20mKLM
Deal found 29/10$20,181
Mon 17/1110:20CWL - SYD
2 stops33h 15mMultiple Airlines
Tue 16/1211:30SYD - CWL
2 stops33h 20mMultiple Airlines
Deal found 29/10$24,029
Mon 17/1110:20CWL - SYD
2 stops33h 15mMultiple Airlines
Thu 18/1215:55SYD - CWL
2 stops35h 50mMultiple Airlines
Deal found 29/10$27,874

Cheapflights Fare Finder

 
Customise your flight search to find flights from Cardiff 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, Cheapflights users made 647,157 searches. Data last updated 31 October 2025.
Use the filters below to find and compare flights from Cardiff to Sydney that are best for you.

Fly from

Cardiff

Fly to

Sydney

Route

Depart

Return

Price

CardiffSydney

CWL - SYD

CWLSYD

Cardiff Wales

Tue 9/12

17:25-15:30

3 stops35h 05m

Sydney Kingsford Smith

Tue 16/12

14:20-15:30

3 stops36h 10m

$3,186

CardiffSydney

CWL - SYD

CWLSYD

Cardiff Wales

Tue 18/11

10:20-18:50

2 stops45h 30m

Sydney Kingsford Smith

Wed 17/12

21:40-16:55

2 stops30h 15m

$3,642

CardiffSydney

CWL - SYD

CWLSYD

Cardiff Wales

Sun 14/12

17:30-19:20

3 stops38h 50m

Sydney Kingsford Smith

Sun 21/12

21:15-16:45

3 stops30h 30m

$3,744

CardiffSydney

CWL - SYD

CWLSYD

Cardiff Wales

Wed 19/11

10:20-06:35

2 stops33h 15m

Sydney Kingsford Smith

Wed 17/12

14:30-09:50

2 stops30h 20m

$4,267

CardiffSydney

CWL - SYD

CWLSYD

Cardiff Wales

Mon 17/11

10:20-06:35

2 stops33h 15m

Sydney Kingsford Smith

Wed 17/12

14:30-09:50

2 stops30h 20m

$4,267

CardiffSydney

CWL - SYD

CWLSYD

Cardiff Wales

Thu 26/2

17:25-08:25

2 stops28h 00m

Sydney Kingsford Smith

Wed 11/3

15:55-09:50

2 stops28h 55m

$16,028

CardiffSydney

CWL - SYD

CWLSYD

Cardiff Wales

Tue 18/11

17:25-07:25

2 stops27h 00m

Sydney Kingsford Smith

Tue 16/12

11:30-09:50

2 stops33h 20m

$20,181

Flights are sorted by cheapest return flights first.

Deals found on 29/10

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
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

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

What is the cheapest month to book a flight from Cardiff to Sydney?

Currently, June is the cheapest month in which you can book a flight from Cardiff to Sydney (average of $1,584). Flying from Cardiff to Sydney in January is currently the most expensive (average of $2,476). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Related info for your journey

Find useful and relevant information for your journey from Cardiff to Sydney. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • 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.

  • What is the cheapest month to book a flight from Cardiff to Sydney?

    Currently, June is the cheapest month in which you can book a flight from Cardiff to Sydney (average of $1,584). Flying from Cardiff to Sydney in January is currently the most expensive (average of $2,476). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Travelling to a place near Sydney?

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

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Alternative routes for Cardiff to Sydney

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How does Cheapflights help users find flights from Cardiff to Sydney?

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?

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Sydney from Cardiff.

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

Yes! Cheapflights helps users easily find flights from Cardiff to Sydney with no change fees.

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

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