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Cheap flights from London Heathrow Airport to Cardiff from £79

LHR — CWL
29 Nov — 6 Dec1
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

Thu 26/1107:50 -
1 stop5h 10m
Thu 10/1213:25 -
1 stop7h 40m
Deal found 29/10£163
Fri 27/1118:45 -
1 stop13h 05m
Fri 4/1216:05 -
1 stop5h 00m
Deal found 28/10£186
Thu 26/1108:50 -
1 stop4h 10m
Thu 3/1213:25 -
1 stop4h 25m
Deal found 29/10£189
Fri 27/1120:45 -
1 stop11h 05m
Mon 30/1108:35 -
1 stop8h 15m
Deal found 29/10£191
Thu 12/1107:50 -
1 stop5h 10m
Mon 16/1108:35 -
1 stop7h 00m
Deal found 28/10£195
Thu 3/1206:30 -
1 stop6h 30m
Wed 9/1212:15 -
1 stop4h 50m
Deal found 28/10£208
Sat 28/1114:10 -
2 stops18h 30m
Sat 5/1208:15 -
1 stop11h 35m
Deal found 28/10£212
Fri 6/1120:45 -
1 stop11h 05m
Sat 21/1108:15 -
1 stop11h 35m
Deal found 27/10£222
Sat 5/1209:55 -
2 stops22h 45m
Fri 11/1216:05 -
1 stop5h 00m
Deal found 28/10£228
Sat 28/1109:55 -
3 stops22h 45m
Fri 4/1216:05 -
1 stop5h 00m
Deal found 26/10£231

Find flight deals from Heathrow to Cardiff

Round-trip from

£163

One-way from

£79

Popular in

March

Cheapest in

January

Average price

£88
26/11-10/12
  • 26/11-10/12
  • 2 total stops
  • 12h 50m total
  • London to Cardiff
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27/11-31/12
  • 27/11-31/12
  • 1 total stop
  • 12h 05m total
  • London to Cardiff
Search Deals
Highest demand for flights based on searches. 47% potential increase in price (£116 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 17% potential price decrease (£20 potential savings vs. average return price).
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Average for round-trip flights in October 2026
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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

Wed 25/11

20:45-13:00

1 stop16h 15m

Cardiff Wales

Wed 31/12

00:00-00:00

Nonstop0h 00m

£82

LondonCardiff

LHR London Heathrow - CWL Cardiff Wales

LHRCWL

London Heathrow

Sat 28/11

13:40-08:40

2 stops19h 00m

Cardiff Wales

Wed 31/12

00:00-00:00

Nonstop0h 00m

£148

LondonCardiff

LHR London Heathrow - CWL Cardiff Wales

LHRCWL

London Heathrow

Fri 27/11

10:35-07:50

3 stops21h 15m

Cardiff Wales

Wed 31/12

00:00-00:00

Nonstop0h 00m

£149

LondonCardiff

LHR London Heathrow - CWL Cardiff Wales

LHRCWL

London Heathrow

Sun 8/11

19:45-08:10

1 stop12h 25m

Cardiff Wales

Wed 31/12

00:00-00:00

Nonstop0h 00m

£154

LondonCardiff

LHR London Heathrow - CWL Cardiff Wales

LHRCWL

London Heathrow

Sat 19/12

09:55-08:40

2 stops22h 45m

Cardiff Wales

Wed 31/12

00:00-00:00

Nonstop0h 00m

£164

LondonCardiff

LHR London Heathrow - CWL Cardiff Wales

LHRCWL

London Heathrow

Thu 26/11

07:50-13:00

1 stop5h 10m

Cardiff Wales

Thu 3/12

13:25-07:55

2 stops18h 30m

£210

LondonCardiff

LHR London Heathrow - CWL Cardiff Wales

LHRCWL

London Heathrow

Mon 30/11

15:20-11:45

1 stop20h 25m

Cardiff Wales

Wed 31/12

00:00-00:00

Nonstop0h 00m

£213

LondonCardiff

LHR London Heathrow - CWL Cardiff Wales

LHRCWL

London Heathrow

Fri 8/1

10:00-17:00

1 stop7h 00m

Cardiff Wales

Sat 9/1

17:30-10:45

1 stop17h 15m

£244

LondonCardiff

LHR London Heathrow - CWL Cardiff Wales

LHRCWL

London Heathrow

Sat 28/11

06:30-17:00

1 stop10h 30m

Cardiff Wales

Fri 4/12

17:30-20:50

1 stop3h 20m

£244

LondonCardiff

LHR London Heathrow - CWL Cardiff Wales

LHRCWL

London Heathrow

Fri 25/12

10:00-17:00

1 stop7h 00m

Cardiff Wales

Sat 2/1

17:30-07:40

1 stop14h 10m

£256

Flights are sorted by cheapest return flights first.

Deals found on 30/10

Showing 1-10 of 14 resultsSorted by cheapest first
1
2

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.

  • How long is the flight from London Heathrow Airport to Cardiff?

    Departing from London Heathrow Airport to Cardiff will take you 7h. There are 124 mi between London Heathrow Airport and Cardiff.

  • 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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