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Cheap flights from London Heathrow Airport to Cardiff from £130

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 10/11. 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
0 bags

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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
09:50 - 15:30LHR-CWL
5h 40m1 stop
Multiple Airlines Logo
15:55 - 21:05CWL-LHR
5h 10m1 stop
£171Multiple Airlines
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Wed, 3 Dec - Wed, 10 Dec
Multiple Airlines Logo
07:50 - 15:30LHR-CWL
7h 40m1 stop
Multiple Airlines Logo
15:55 - 21:05CWL-LHR
5h 10m1 stop
£183Multiple Airlines
Find Deal
Wed, 26 Nov - Wed, 3 Dec
Multiple Airlines Logo
07:50 - 19:40LHR-CWL
11h 50m1 stop
Multiple Airlines Logo
21:20 - 10:10CWL-LHR
12h 50m1 stop
£201Multiple Airlines
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Sat, 29 Nov - Sun, 30 Nov
KLM Logo
20:25 - 09:50LHR-CWL
13h 25m1 stop
KLM Logo
10:20 - 17:00CWL-LHR
6h 40m1 stop
£269KLM
Find Deal
Tue, 2 Dec - Tue, 9 Dec
KLM Logo
10:00 - 16:55LHR-CWL
6h 55m1 stop
KLM Logo
10:20 - 20:50CWL-LHR
10h 30m1 stop
£316KLM
Find Deal
Tue, 18 Nov - Sat, 22 Nov
KLM Logo
08:40 - 16:55LHR-CWL
8h 15m1 stop
KLM Logo
10:20 - 20:50CWL-LHR
10h 30m1 stop
£337KLM
Find Deal
Thu, 18 Dec - Thu, 25 Dec
KLM Logo
08:40 - 16:45LHR-CWL
8h 05m1 stop
KLM Logo
10:20 - 14:25CWL-LHR
4h 05m1 stop
£390KLM
Find Deal
Fri, 14 Nov - Sat, 15 Nov
British Airways Logo
06:10 - 11:30LHR-CWL
5h 20m2 stops
British Airways Logo
12:00 - 07:45CWL-LHR
19h 45m2 stops
£654British Airways
Find Deal
Mon, 1 Dec - Mon, 8 Dec
British Airways Logo
15:20 - 11:30LHR-CWL
20h 10m2 stops
British Airways Logo
12:00 - 08:00CWL-LHR
20h 00m2 stops
£680British Airways
Find Deal
Tue, 18 Nov - Sat, 22 Nov
British Airways Logo
15:20 - 11:30LHR-CWL
20h 10m2 stops
British Airways Logo
12:00 - 20:50CWL-LHR
8h 50m2 stops
£684British Airways
Find Deal
Fri, 27 Mar - Sun, 29 Mar

KLM flights from London Heathrow Airport to Cardiff

Our best KLM deals on London Heathrow Airport to Cardiff flight tickets
KLM
2 Dec
LHR20:25London Heathrow
13h 25m
1 stop
CWL09:50Cardiff Wales
9 Dec
CWL10:20Cardiff Wales
6h 40m
1 stop
LHR17:00London Heathrow
£269
Find similar
KLM
18 Nov
LHR10:00London Heathrow
6h 55m
1 stop
CWL16:55Cardiff Wales
22 Nov
CWL10:20Cardiff Wales
10h 30m
1 stop
LHR20:50London Heathrow
£316
Find similar
KLM
18 Dec
LHR08:40London Heathrow
8h 15m
1 stop
CWL16:55Cardiff Wales
25 Dec
CWL10:20Cardiff Wales
10h 30m
1 stop
LHR20:50London Heathrow
£337
Find similar

British Airways flights from London Heathrow Airport to Cardiff

Our best British Airways deals on London Heathrow Airport to Cardiff flight tickets
British Airways
1 Dec
LHR06:10London Heathrow
5h 20m
2 stops
CWL11:30Cardiff Wales
8 Dec
CWL12:00Cardiff Wales
19h 45m
2 stops
LHR07:45London Heathrow
£654
Find similar
British Airways
18 Nov
LHR15:20London Heathrow
20h 10m
2 stops
CWL11:30Cardiff Wales
22 Nov
CWL12:00Cardiff Wales
20h 00m
2 stops
LHR08:00London Heathrow
£680
Find similar
British Airways
27 Mar
LHR15:20London Heathrow
20h 10m
2 stops
CWL11:30Cardiff Wales
29 Mar
CWL12:00Cardiff Wales
8h 50m
2 stops
LHR20:50London Heathrow
£684
Find similar

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 3 November 2025.
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

LondonCardiff

LHR - CWL

LHRCWL

London Heathrow

Wed 3/12

09:50-15:30

1 stop5h 40m

Cardiff Wales

Wed 10/12

15:55-21:05

1 stop5h 10m

£171

LondonCardiff

LHR - CWL

LHRCWL

London Heathrow

Wed 26/11

07:50-15:30

1 stop7h 40m

Cardiff Wales

Wed 3/12

15:55-21:05

1 stop5h 10m

£183

LondonCardiff

LHR - CWL

LHRCWL

London Heathrow

Sat 29/11

07:50-19:40

1 stop11h 50m

Cardiff Wales

Sun 30/11

21:20-10:10

1 stop12h 50m

£201

LondonCardiff

LHR - CWL

LHRCWL

London Heathrow

Tue 2/12

20:25-09:50

1 stop13h 25m

Cardiff Wales

Tue 9/12

10:20-17:00

1 stop6h 40m

£269

LondonCardiff

LHR - CWL

LHRCWL

London Heathrow

Tue 18/11

10:00-16:55

1 stop6h 55m

Cardiff Wales

Sat 22/11

10:20-20:50

1 stop10h 30m

£316

LondonCardiff

LHR - CWL

LHRCWL

London Heathrow

Thu 18/12

08:40-16:55

1 stop8h 15m

Cardiff Wales

Thu 25/12

10:20-20:50

1 stop10h 30m

£337

LondonCardiff

LHR - CWL

LHRCWL

London Heathrow

Fri 14/11

08:40-16:45

1 stop8h 05m

Cardiff Wales

Sat 15/11

10:20-14:25

1 stop4h 05m

£390

LondonCardiff

LHR - CWL

LHRCWL

London Heathrow

Mon 1/12

06:10-11:30

2 stops5h 20m

Cardiff Wales

Mon 8/12

12:00-07:45

2 stops19h 45m

£654

LondonCardiff

LHR - CWL

LHRCWL

London Heathrow

Tue 18/11

15:20-11:30

2 stops20h 10m

Cardiff Wales

Sat 22/11

12:00-08:00

2 stops20h 00m

£680

LondonCardiff

LHR - CWL

LHRCWL

London Heathrow

Fri 27/3

15:20-11:30

2 stops20h 10m

Cardiff Wales

Sun 29/3

12:00-20:50

2 stops8h 50m

£684

Flights are sorted by cheapest return flights first.

Showing 1-10 of 19 resultsSorted by cheapest first
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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 month to fly to Cardiff?

The month of December is, on average, the cheapest month to fly to Cardiff from London Heathrow Airport, with most prices found around £202. If you are unable to visit Cardiff during the month of December, then departing from London Heathrow Airport during the month September is also very affordable. Most momondo users find prices during this month for around £214.

What is the cheapest day to depart on your flight to Cardiff?

The cheapest day to depart from London Heathrow Airport to Cardiff is on a Tuesday. Travellers who choose to depart for Cardiff on a Tuesday will often find tickets for as low as £263. When flying out on a Thursday, the most expensive travel day of the week, you can expect to see flight prices from London Heathrow Airport to Cardiff for around £337.

What is the cheapest time of day to depart on your flight to Cardiff?

The cheapest time of day to fly to Cardiff is at midday when flights can be purchased for as low as £139. In the afternoon is when there is more demand to fly to Cardiff, so prices are often more expensive at around £317 per ticket.

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

Direct flights

None
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

  • 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 4h 25m 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 many operators does momondo search for flights from London Heathrow Airport to Cardiff Wales Airport?

  • 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.

  • What is the most popular airline from London Heathrow Airport to Cardiff?

Best airlines flying from London Heathrow Airport to Cardiff

Compare and see reviews for airlines that fly from London Heathrow Airport to Cardiff with momondo
Airline
Rating
Free Cancellation
Price
KLMPriceFrom £214Free CancellationRating
7.7
1,405 reviews
Search KLM flights

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