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Cheap flights from Cardiff to Sydney from £1,306

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/6. Fares are subject to change and may not be available on all flights or dates of travel.
CWL — SYD
9 Jul — 16 Jul1
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 9 June 2026.

Wed 10/609:45
CWL
-
SYD
2 stops35h 40m
KLM
Wed 17/607:55
SYD
-
CWL
2 stops34h 20m
KLM
Deal found 5/6£1,306
Tue 29/909:45
CWL
-
SYD
2 stops35h 40m
KLM
Mon 28/1212:00
SYD
-
CWL
2 stops40h 00m
KLM
Deal found 9/6£1,438
Sat 4/709:50
CWL
-
SYD
2 stops41h 45m
Air France
Sat 11/720:30
SYD
-
CWL
2 stops53h 15m
Air France
Deal found 6/6£1,439
Wed 1/717:15
CWL
-
SYD
2 stops58h 20m
Air France
Fri 17/711:00
SYD
-
CWL
2 stops62h 45m
Air France
Deal found 7/6£1,448
Fri 12/617:15
CWL
-
SYD
2 stops26h 55m
Multiple Airlines
Fri 19/609:50
SYD
-
CWL
2 stops56h 25m
Multiple Airlines
Deal found 7/6£1,477
Thu 11/609:45
CWL
-
SYD
2 stops35h 40m
KLM
Thu 18/607:55
SYD
-
CWL
2 stops34h 20m
KLM
Deal found 6/6£1,508
Mon 30/1110:20
CWL
-
SYD
2 stops33h 15m
KLM
Sat 12/1206:35
SYD
-
CWL
3 stops45h 25m
KLM
Deal found 7/6£1,510
Sat 4/717:35
CWL
-
SYD
2 stops27h 35m
Multiple Airlines
Fri 17/720:45
SYD
-
CWL
2 stops29h 20m
Multiple Airlines
Deal found 8/6£1,538
Sat 5/1210:20
CWL
-
SYD
3 stops37h 25m
Multiple Airlines
Sun 20/1222:10
SYD
-
CWL
2 stops46h 40m
Multiple Airlines
Deal found 7/6£1,562
Sat 13/617:35
CWL
-
SYD
3 stops59h 30m
Multiple Airlines
Sat 20/621:00
SYD
-
CWL
3 stops52h 45m
Multiple Airlines
Deal found 8/6£1,605

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 9 June 2026.

Round-trip from

£1,438

Popular in

December

Cheapest in

May

Average price

£1,239
KLM
  • KLM
  • 29/9-28/12
  • 4 total stops
  • 75h 40m total
  • Cardiff to Sydney
Search Deals
Highest demand for flights based on searches. 7% potential increase in price (£81 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£27 potential savings vs. average return price).
Search Deals
Average for round-trip flights in June 2026
Search Deals

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 858,174 searches. Data last updated 9 June 2026.
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 - SYD

CWLSYD

Cardiff Wales

Tue 29/9

09:45-06:25

2 stops35h 40m

Sydney Kingsford Smith

Mon 28/12

12:00-17:00

2 stops40h 00m

£1,438

CardiffSydney

CWL - SYD

CWLSYD

Cardiff Wales

Sat 4/7

09:50-12:35

2 stops41h 45m

Sydney Kingsford Smith

Sat 11/7

20:30-16:45

2 stops53h 15m

£1,439

CardiffSydney

CWL - SYD

CWLSYD

Cardiff Wales

Mon 30/11

10:20-07:25

3 stops34h 05m

Sydney Kingsford Smith

Sat 12/12

06:35-17:00

3 stops45h 25m

£1,510
Fastest return journey

CardiffSydney

CWL - SYD

CWLSYD

Cardiff Wales

Mon 30/11

17:30-06:50

2 stops26h 20m

Sydney Kingsford Smith

Sat 12/12

21:40-17:00

2 stops30h 20m

£1,644

CardiffSydney

CWL - SYD

CWLSYD

Cardiff Wales

Sun 26/7

09:50-12:35

2 stops41h 45m

Sydney Kingsford Smith

Thu 30/7

20:30-17:05

2 stops53h 35m

£1,872

CardiffSydney

CWL - SYD

CWLSYD

Cardiff Wales

Sat 4/7

17:35-07:10

3 stops28h 35m

Sydney Kingsford Smith

Sat 11/7

10:20-16:45

2 stops39h 25m

£1,946

CardiffSydney

CWL - SYD

CWLSYD

Cardiff Wales

Wed 1/7

17:15-12:35

2 stops58h 20m

Sydney Kingsford Smith

Fri 17/7

16:25-16:45

3 stops57h 20m

£1,949

CardiffSydney

CWL - SYD

CWLSYD

Cardiff Wales

Wed 1/7

17:15-07:10

3 stops28h 55m

Sydney Kingsford Smith

Fri 17/7

22:10-09:15

2 stops44h 05m

£1,984
Cheapest one-way
Fastest single journey

CardiffSydney

CWL - SYD

CWLSYD

Cardiff Wales

Sat 20/6

11:35-06:35

2 stops34h 00m

£4,215

Flights are sorted by cheapest return flights first.

Deals found on 8/6

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
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, May is the cheapest month in which you can book a flight from Cardiff to Sydney (average of £929). Flying from Cardiff to Sydney in July is currently the most expensive (average of £1,703). 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.

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

Reviews of airlines servicing Sydney

Get insights into the airlines that provide service to Sydney. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Sydney. Reviews last updated 9 June 2026.
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
1,527 reviews
Check prices

Food

7.3

Boarding

7.8

Comfort

7.7

Overall

7.8

Crew

8.4

Entertainment

7.2

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
1,527 reviews
KLM
7.8
Good
1,527 reviews
Check prices

Food

7.3

Boarding

7.8

Comfort

7.7

Overall

7.8

Crew

8.4

Entertainment

7.2

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
1,452 reviews
KLM
7.8
Good
1,527 reviews
Check prices

Food

7.3

Boarding

7.8

Comfort

7.7

Overall

7.8

Crew

8.4

Entertainment

7.2

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

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?

    There are many flights that can get you from Cardiff to Sydney in 35h 40m. Fly via KLM or Air France to get the fastest option. Airlines will cover a distance of 10677 mi. Both multi-stop and direct flights can be found to your destination and back.

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

    Cheapflights users have booked flights from Cardiff to Sydney round-trip from £747. Another airline that can offer you cheap pricing is KLM. Users have found that Etihad Airways is 44% 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.

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

    Currently, May is the cheapest month in which you can book a flight from Cardiff to Sydney (average of £929). Flying from Cardiff to Sydney in July is currently the most expensive (average of £1,703). 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
Bondi Beach
Wollongong
Parramatta
Coogee
Manly

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

Top 2 airlines flying from Cardiff to Sydney

Discover the top 2 airlines that operate flights from Cardiff to Sydney. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 9 June 2026.
AirlineCheapestAverageFlexibilityOn-time
Etihad AirwaysCheapest£747Average£1,268FlexibilityNo cancel feeOn-time75%
Search Etihad Airways flights
KLMCheapest£1,191Average£1,534FlexibilityNo cancel feeOn-time75%
Search KLM flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

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?

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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