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Cheap flights from Cardiff to Sydney from $1,398

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 29/1. Fares are subject to change and may not be available on all flights or dates of travel.
CWL — SYD
17 Jan — 24 Jan1
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
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 18 December 2025.

Mon 22/1217:15CWL - SYD
3 stops35h 15mMultiple Airlines
Mon 29/1221:50SYD - CWL
3 stops34h 45mMultiple Airlines
Deal found 16/12$3,591
Mon 22/1217:15CWL - SYD
2 stops27h 10mKLM
Mon 29/1215:55SYD - CWL
2 stops28h 55mKLM
Deal found 16/12$3,695

Find 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 18 December 2025.

Round-trip from

$2,393

One-way from

$1,398

Popular in

July

Cheapest in

April

Average price

$3,472
1/3-31/3
  • 1/3-31/3
  • 4 total stops
  • 65h 25m total
  • Cardiff to Sydney
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29/1
  • 29/1
  • 3 total stops
  • 57h 05m total
  • Cardiff to Sydney
Search Deals
Highest demand for flights based on searches. 6% potential increase in price ($266 potential increase over avg. return price).
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Cheapest flight prices on average. 3% potential price decrease ($145 potential savings vs. average return price).
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Average for round-trip flights in December 2025
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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 18 December 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

Sun 1/3

10:20-06:35

2 stops33h 15m

Sydney Kingsford Smith

Tue 31/3

11:05-09:15

2 stops32h 10m

$2,393

CardiffSydney

CWL - SYD

CWLSYD

Cardiff Wales

Sat 31/1

20:05-18:35

2 stops35h 30m

Sydney Kingsford Smith

Sat 7/2

21:45-20:55

2 stops34h 10m

$2,400

CardiffSydney

CWL - SYD

CWLSYD

Cardiff Wales

Sat 31/1

10:20-07:25

3 stops34h 05m

Sydney Kingsford Smith

Sat 7/2

14:30-09:45

2 stops30h 15m

$2,539

CardiffSydney

CWL - SYD

CWLSYD

Cardiff Wales

Sun 11/1

10:15-10:45

3 stops37h 30m

Sydney Kingsford Smith

Sun 8/2

12:45-16:45

2 stops39h 00m

$2,548

CardiffSydney

CWL - SYD

CWLSYD

Cardiff Wales

Sun 1/3

17:30-07:30

3 stops27h 00m

Sydney Kingsford Smith

Tue 31/3

11:10-16:45

3 stops39h 35m

$2,652

CardiffSydney

CWL - SYD

CWLSYD

Cardiff Wales

Tue 13/1

10:20-09:15

3 stops35h 55m

Sydney Kingsford Smith

Tue 20/1

16:35-15:30

2 stops33h 55m

$2,707

CardiffSydney

CWL - SYD

CWLSYD

Cardiff Wales

Thu 1/1

10:20-07:35

2 stops34h 15m

Sydney Kingsford Smith

Wed 14/1

22:10-09:50

2 stops46h 40m

$3,342

CardiffSydney

CWL - SYD

CWLSYD

Cardiff Wales

Thu 29/1

10:30-06:35

3 stops57h 05m

$1,398

CardiffSydney

CWL - SYD

CWLSYD

Cardiff Wales

Fri 30/1

17:15-10:45

3 stops30h 30m

$1,980

Flights are sorted by cheapest return flights first.

Deals found on 17/12

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, March is the cheapest month in which you can book a flight from Cardiff to Sydney (average of $1,505). Flying from Cardiff to Sydney in January is currently the most expensive (average of $2,583). 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.

  • How long is the flight from Cardiff to Sydney?

    Departing from Cardiff to Sydney will take you 34h 05m. The distance between Cardiff and Sydney is about 17183 km.

  • 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, March is the cheapest month in which you can book a flight from Cardiff to Sydney (average of $1,505). Flying from Cardiff to Sydney in January is currently the most expensive (average of $2,583). 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
Terrigal
Manly
Randwick
Lithgow
Coogee
Leura
Cronulla
Bondi Beach

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Cardiff to Sydney

See prices for flight routes from nearby airports that may be better suited for you.
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Fly with Cheapflights

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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?

Yes! Start tracking prices for Cardiff to Sydney flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

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