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Cheap flights from London Heathrow Airport to Cardiff from £122

LHR — CWL
18 Nov — 25 Nov1
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

Fri 13/1119:45 -
1 stop12h 05m
Mon 16/1108:35 -
1 stop12h 30m
Deal found 19/10£143
Thu 12/1108:50 -
1 stop4h 10m
Thu 26/1113:25 -
1 stop7h 40m
Deal found 15/10£159
Thu 5/1108:50 -
1 stop4h 10m
Sat 7/1108:15 -
1 stop9h 35m
Deal found 17/10£170
Thu 5/1108:50 -
1 stop4h 10m
Fri 6/1116:05 -
1 stop5h 00m
Deal found 17/10£176
Fri 13/1119:45 -
1 stop12h 05m
Fri 20/1116:05 -
1 stop5h 00m
Deal found 16/10£185
Fri 13/1118:45 -
1 stop13h 05m
Fri 27/1116:05 -
1 stop5h 00m
Deal found 16/10£186
Wed 4/1120:50 -
2 stops16h 10m
Sat 14/1108:15 -
1 stop9h 35m
Deal found 18/10£187
Sun 1/1107:50 -
1 stop6h 05m
Thu 5/1113:25 -
1 stop7h 40m
Deal found 17/10£189
Tue 20/1015:50 -
1 stop7h 00m
Fri 30/1023:10 -
1 stop8h 55m
Deal found 15/10£190
Sat 14/1109:55 -
2 stops22h 45m
Sat 28/1107:55 -
2 stops25h 15m
Deal found 17/10£201

Find flight deals from Heathrow to Cardiff

Round-trip from

£143

One-way from

£122

Popular in

March

Cheapest in

January

Average price

£89
13/11-16/11
  • 13/11-16/11
  • 2 total stops
  • 24h 35m total
  • London to Cardiff
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3/12-31/12
  • 3/12-31/12
  • 1 total stop
  • 4h 10m 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. 16% potential price decrease (£19 potential savings vs. average return price).
Search Deals
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

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Route

Depart

Return

Price

Cheapest return flight
Fastest return journey

LondonCardiff

LHR London Heathrow - CWL Cardiff Wales

LHRCWL

London Heathrow

Thu 3/12

08:50-13:00

1 stop4h 10m

Cardiff Wales

Wed 31/12

00:00-00:00

Nonstop0h 00m

£122

LondonCardiff

LHR London Heathrow - CWL Cardiff Wales

LHRCWL

London Heathrow

Thu 19/11

15:25-08:30

1 stop17h 05m

Cardiff Wales

Wed 31/12

00:00-00:00

Nonstop0h 00m

£139

LondonCardiff

LHR London Heathrow - CWL Cardiff Wales

LHRCWL

London Heathrow

Wed 18/11

06:20-08:30

1 stop26h 10m

Cardiff Wales

Wed 31/12

00:00-00:00

Nonstop0h 00m

£140

LondonCardiff

LHR London Heathrow - CWL Cardiff Wales

LHRCWL

London Heathrow

Fri 23/10

21:10-06:55

1 stop9h 45m

Cardiff Wales

Wed 31/12

00:00-00:00

Nonstop0h 00m

£176

LondonCardiff

LHR London Heathrow - CWL Cardiff Wales

LHRCWL

London Heathrow

Mon 7/12

17:25-11:45

1 stop18h 20m

Cardiff Wales

Wed 31/12

00:00-00:00

Nonstop0h 00m

£179

LondonCardiff

LHR London Heathrow - CWL Cardiff Wales

LHRCWL

London Heathrow

Thu 10/12

11:50-08:30

1 stop20h 40m

Cardiff Wales

Wed 31/12

00:00-00:00

Nonstop0h 00m

£196

LondonCardiff

LHR London Heathrow - CWL Cardiff Wales

LHRCWL

London Heathrow

Fri 30/10

07:50-15:40

1 stop7h 50m

Cardiff Wales

Fri 30/10

23:10-09:05

1 stop9h 55m

£221

LondonCardiff

LHR London Heathrow - CWL Cardiff Wales

LHRCWL

London Heathrow

Sat 21/11

06:30-17:00

1 stop10h 30m

Cardiff Wales

Fri 27/11

17:30-20:50

1 stop3h 20m

£242

LondonCardiff

LHR London Heathrow - CWL Cardiff Wales

LHRCWL

London Heathrow

Sat 28/11

06:30-17:00

1 stop10h 30m

Cardiff Wales

Sat 5/12

10:20-20:50

1 stop10h 30m

£243

LondonCardiff

LHR London Heathrow - CWL Cardiff Wales

LHRCWL

London Heathrow

Sat 24/10

07:30-09:30

1 stop26h 00m

Cardiff Wales

Wed 31/12

00:00-00:00

Nonstop0h 00m

£245

Flights are sorted by cheapest return flights first.

Deals found on 15/10

Showing 1-10 of 16 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 10h 30m. 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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