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Cheap flights from London Heathrow Airport to Cardiff from £88

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from London Heathrow Airport to Cardiff departing on 25/8. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Find the cheapest flights from London Heathrow Airport to Cardiff

Cheap return flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
21:10 - 06:55
LHR
-
CWL
9h 45m
1 stop
Multiple Airlines Logo
23:15 - 09:05
CWL
-
LHR
9h 50m
1 stop
£158Multiple Airlines
Fri, 11 Sep - Tue, 15 Sep
Multiple Airlines Logo
20:10 - 06:55
LHR
-
CWL
10h 45m
1 stop
Multiple Airlines Logo
22:10 - 10:20
CWL
-
LHR
12h 10m
1 stop
£158Multiple Airlines
Fri, 4 Sep - Mon, 7 Sep
Multiple Airlines Logo
20:10 - 06:55
LHR
-
CWL
10h 45m
1 stop
Multiple Airlines Logo
22:45 - 08:05
CWL
-
LHR
9h 20m
1 stop
£158Multiple Airlines
Fri, 11 Sep - Fri, 18 Sep
Multiple Airlines Logo
14:20 - 22:50
LHR
-
CWL
8h 30m
1 stop
Multiple Airlines Logo
23:15 - 11:10
CWL
-
LHR
11h 55m
1 stop
£158Multiple Airlines
Tue, 15 Sep - Tue, 22 Sep
Multiple Airlines Logo
21:10 - 06:55
LHR
-
CWL
9h 45m
1 stop
Multiple Airlines Logo
22:10 - 11:10
CWL
-
LHR
13h 00m
1 stop
£158Multiple Airlines
Fri, 11 Sep - Mon, 21 Sep
Multiple Airlines Logo
14:20 - 22:50
LHR
-
CWL
8h 30m
1 stop
Multiple Airlines Logo
23:15 - 11:10
CWL
-
LHR
11h 55m
1 stop
£161Multiple Airlines
Tue, 15 Sep - Tue, 22 Sep
Multiple Airlines Logo
20:10 - 06:55
LHR
-
CWL
10h 45m
1 stop
Multiple Airlines Logo
22:45 - 08:05
CWL
-
LHR
9h 20m
1 stop
£161Multiple Airlines
Fri, 11 Sep - Fri, 18 Sep
Multiple Airlines Logo
21:10 - 06:55
LHR
-
CWL
9h 45m
1 stop
Multiple Airlines Logo
23:15 - 09:05
CWL
-
LHR
9h 50m
1 stop
£161Multiple Airlines
Fri, 11 Sep - Tue, 15 Sep
Multiple Airlines Logo
15:50 - 22:20
LHR
-
CWL
6h 30m
1 stop
Multiple Airlines Logo
22:10 - 08:05
CWL
-
LHR
9h 55m
1 stop
£161Multiple Airlines
Fri, 18 Sep - Mon, 21 Sep
KLM Logo
06:30 - 17:05
LHR
-
CWL
10h 35m
1 stop
KLM Logo
17:15 - 20:55
CWL
-
LHR
3h 40m
1 stop
£228KLM
Sat, 12 Sep - Sun, 20 Sep

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KLM flights from London Heathrow Airport to Cardiff

Our best KLM deals on London Heathrow Airport to Cardiff flight tickets
KLM
12 Sept
LHR06:30London Heathrow
10h 35m
1 stop
CWL17:05Cardiff Wales
20 Sept
CWL17:15Cardiff Wales
3h 40m
1 stop
LHR20:55London Heathrow
£228
KLM
8 Jan
LHR08:40London Heathrow
8h 20m
1 stop
CWL17:00Cardiff Wales
11 Jan
CWL10:20Cardiff Wales
6h 40m
1 stop
LHR17:00London Heathrow
£243
KLM
12 Sept
LHR06:30London Heathrow
10h 35m
1 stop
CWL17:05Cardiff Wales
20 Sept
CWL17:15Cardiff Wales
3h 40m
1 stop
LHR20:55London Heathrow
£245

momondo Fare Finder

 
Customise your flight search to find flights from London Heathrow Airport to Cardiff 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, momondo users made 279,928 searches. Data last updated 4 August 2026.
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 - CWL

LHRCWL

London Heathrow

Fri 11/9

21:10-06:55

1 stop9h 45m

Cardiff Wales

Tue 15/9

23:15-09:05

1 stop9h 50m

£158

LondonCardiff

LHR - CWL

LHRCWL

London Heathrow

Fri 4/9

20:10-06:55

1 stop10h 45m

Cardiff Wales

Mon 7/9

22:10-10:20

1 stop12h 10m

£158

LondonCardiff

LHR - CWL

LHRCWL

London Heathrow

Fri 11/9

20:10-06:55

1 stop10h 45m

Cardiff Wales

Fri 18/9

22:45-08:05

1 stop9h 20m

£158

LondonCardiff

LHR - CWL

LHRCWL

London Heathrow

Tue 15/9

14:20-22:50

1 stop8h 30m

Cardiff Wales

Tue 22/9

23:15-11:10

1 stop11h 55m

£158

LondonCardiff

LHR - CWL

LHRCWL

London Heathrow

Fri 11/9

21:10-06:55

1 stop9h 45m

Cardiff Wales

Mon 21/9

22:10-11:10

1 stop13h 00m

£158

LondonCardiff

LHR - CWL

LHRCWL

London Heathrow

Tue 15/9

14:20-22:50

1 stop8h 30m

Cardiff Wales

Tue 22/9

23:15-11:10

1 stop11h 55m

£161

LondonCardiff

LHR - CWL

LHRCWL

London Heathrow

Fri 11/9

20:10-06:55

1 stop10h 45m

Cardiff Wales

Fri 18/9

22:45-08:05

1 stop9h 20m

£161

LondonCardiff

LHR - CWL

LHRCWL

London Heathrow

Fri 11/9

21:10-06:55

1 stop9h 45m

Cardiff Wales

Tue 15/9

23:15-09:05

1 stop9h 50m

£161

LondonCardiff

LHR - CWL

LHRCWL

London Heathrow

Fri 18/9

15:50-22:20

1 stop6h 30m

Cardiff Wales

Mon 21/9

22:10-08:05

1 stop9h 55m

£161
Fastest return journey

LondonCardiff

LHR - CWL

LHRCWL

London Heathrow

Sat 12/9

06:30-17:05

1 stop10h 35m

Cardiff Wales

Sun 20/9

17:15-20:55

1 stop3h 40m

£228

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

See travel insights to Cardiff from

How to get the cheapest flight ticket from London Heathrow Airport to Cardiff

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest airline that flies from London Heathrow to Cardiff Wales?

Vueling is the most popular carrier operating from London Heathrow to Cardiff Wales

When to book flights from London Heathrow Airport to Cardiff

Are you open to changing your travel dates? Check out the ideal times to fly from London Heathrow Airport to Cardiff according to our flight data. Find out which month and days have the cheapest flights.
Estimated return price

Cheap London Heathrow Airport to Cardiff (LHR to CWL) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from London Heathrow Airport to Cardiff

Fastest flight time

6h 30m

Direct flights

None
The fastest flight from London Heathrow Airport to Cardiff takes 6h 30m
There are no direct flights from London Heathrow Airport to Cardiff. There are no popular flight routes from London Heathrow Airport to Cardiff.
Search flight deals

Frequently asked questions about flying from London Heathrow Airport to Cardiff

  • How far is London Heathrow to Cardiff Wales by plane?

    London Heathrow and Cardiff Wales are 117.1 mi apart from one another. Typically, this will take 6h 30m by plane in normal conditions.

  • When did momondo last update prices for flights from London Heathrow Airport to Cardiff Wales Airport?

    Prices for flights from London Heathrow Airport to Cardiff Wales Airport refresh daily.

  • How old do you have to be to fly from London Heathrow Airport to Cardiff Wales Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from London Heathrow Airport to Cardiff Wales Airport.

  • What documentation or ID do you need to fly to Cardiff Wales Airport?

    The necessary travel and health documents for your Cardiff Wales Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Travelling to a place near Cardiff?

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

Why use momondo?

Why should I use momondo to find a flight deal from London to Cardiff?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from London to Cardiff . Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from London to Cardiff with flexible booking policies on momondo?

momondo does allow users to show only those flights to Cardiff from London which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from London to Cardiff?

Once all potential London to Cardiff flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from London to Cardiff right now. Can momondo alert me if prices change?

Yes. momondo can track prices for London to Cardiff flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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Find better results for your trip to the United Kingdom

Airports servicing Wales

Holyhead Anglesey Airport