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Cheap flights from London Heathrow Airport to Cardiff from £83

LHR — CWL
1 Oct — 8 Oct1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Heathrow to Cardiff

Enter your travel dates to find the best prices.

Cheapest flights from Heathrow to Cardiff

Mon 28/915:50 -
1 stop5h 55m
Mon 12/1022:10 -
1 stop9h 55m
Deal found 31/8£142
Mon 12/1015:50 -
1 stop5h 55m
Mon 19/1022:10 -
1 stop13h 00m
Deal found 28/8£147
Tue 13/1012:00 -
1 stop10h 50m
Tue 20/1023:15 -
1 stop8h 50m
Deal found 29/8£151
Wed 21/1019:35 -
1 stop3h 50m
Tue 27/1022:15 -
1 stop9h 50m
Deal found 30/8£153
Mon 28/915:50 -
1 stop5h 55m
Mon 5/1022:10 -
1 stop9h 55m
Deal found 31/8£155
Tue 13/1012:00 -
1 stop10h 50m
Fri 16/1022:45 -
1 stop10h 20m
Deal found 29/8£159
Thu 8/1021:10 -
1 stop10h 10m
Wed 14/1023:50 -
1 stop9h 15m
Deal found 28/8£160
Thu 15/1016:50 -
1 stop5h 35m
Thu 22/1022:50 -
1 stop9h 15m
Deal found 31/8£162

Find flight deals from Heathrow to Cardiff

Round-trip from

£142

One-way from

£83

Popular in

March

Cheapest in

May

Average price

£259
28/9-12/10
  • 28/9-12/10
  • 2 total stops
  • 15h 50m total
  • London to Cardiff
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16/9
  • 16/9
  • 1 total stop
  • 7h 35m total
  • London to Cardiff
Search Deals
Highest demand for flights based on searches. 37% potential increase in price (£94 potential increase over avg. return price).
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Cheapest flight prices on average. 11% potential price decrease (£16 potential savings vs. average return price).
Search Deals
Average for round-trip flights in September 2026
Search Deals

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

LondonCardiff

LHR London Heathrow - CWL Cardiff Wales

LHRCWL

London Heathrow

Tue 13/10

12:00-22:50

1 stop10h 50m

Cardiff Wales

Tue 20/10

23:15-08:05

1 stop8h 50m

£159

LondonCardiff

LHR London Heathrow - CWL Cardiff Wales

LHRCWL

London Heathrow

Mon 12/10

08:50-21:45

1 stop12h 55m

Cardiff Wales

Mon 19/10

22:10-10:20

1 stop12h 10m

£160

LondonCardiff

LHR London Heathrow - CWL Cardiff Wales

LHRCWL

London Heathrow

Thu 15/10

16:50-22:25

1 stop5h 35m

Cardiff Wales

Thu 22/10

22:50-08:05

1 stop9h 15m

£162

LondonCardiff

LHR London Heathrow - CWL Cardiff Wales

LHRCWL

London Heathrow

Wed 14/10

19:35-23:25

1 stop3h 50m

Cardiff Wales

Wed 21/10

23:50-13:55

1 stop14h 05m

£164

LondonCardiff

LHR London Heathrow - CWL Cardiff Wales

LHRCWL

London Heathrow

Thu 8/10

21:10-07:20

1 stop10h 10m

Cardiff Wales

Wed 14/10

23:50-08:05

1 stop8h 15m

£230

LondonCardiff

LHR London Heathrow - CWL Cardiff Wales

LHRCWL

London Heathrow

Sat 26/9

16:50-09:10

2 stops16h 20m

Cardiff Wales

Sat 10/10

07:30-17:20

1 stop9h 50m

£235
Fastest return journey

LondonCardiff

LHR London Heathrow - CWL Cardiff Wales

LHRCWL

London Heathrow

Thu 5/11

10:00-17:00

1 stop7h 00m

Cardiff Wales

Sat 7/11

10:20-17:00

1 stop6h 40m

£244

LondonCardiff

LHR London Heathrow - CWL Cardiff Wales

LHRCWL

London Heathrow

Thu 8/10

20:55-09:15

1 stop12h 20m

Cardiff Wales

Wed 14/10

17:15-20:55

1 stop3h 40m

£248
Cheapest one-way

LondonCardiff

LHR London Heathrow - CWL Cardiff Wales

LHRCWL

London Heathrow

Wed 23/9

15:10-23:25

1 stop8h 15m

£83

LondonCardiff

LHR London Heathrow - CWL Cardiff Wales

LHRCWL

London Heathrow

Wed 14/10

18:10-23:25

1 stop5h 15m

£86

Flights are sorted by cheapest return flights first.

Deals found on 29/8

Showing 1-10 of 17 resultsSorted by cheapest first
1
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Best time to book a flight from Heathrow to Cardiff

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

Cheapflights Insights

Everything you need to know about your flight from London Heathrow Airport to Cardiff

What is the cheapest time of day to fly from LHR to CWL?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from London Heathrow Airport to Cardiff as you normally would.

Related info for your journey

  • What airport do you fly into for flights to Cardiff from London Heathrow?

    Most people fly into Cardiff Wales (CWL) if they book a flight to Cardiff from London Heathrow. On average, Cardiff Wales has 0 inbound flights from London Heathrow per day from 0 airlines. Cardiff Wales is conveniently located just 9.1 mi from Cardiff’s city center.

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

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

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

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

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

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

Book flights to Cardiff if you plan to visit one of these locations
Bridgend
Barry

Browse thousands of different options on Cheapflights for your next trip

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

Deals for Heathrow to Cardiff flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.

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

Cheapflights simply makes it quick and affordable to book flights from Heathrow to Cardiff by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

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

Certainly. Search results for flights to Cardiff from Heathrow shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

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

Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and provide a valid email address to enable Price Alerts. That’s it!

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