LHR - CWL

£103 Find Cheap Flights from London Heathrow Airport to Cardiff

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Heathrow to Cardiff departing on 15/4. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Cardiff

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from London to Cardiff, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from London to Cardiff, as well as popular online travel agencies
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Everything you should know

Cheapest return fare
£154
Multiple Airlines
Wed 25/2Wed 11/3
LHR - CWL • 1 stop
Cheapest one-way flight
£103
Multiple Airlines
Wed 15/4
LHR - CWL • 1 stop
Start a new search
KAYAK searches hundreds of sites at once to find you the best travel deals.
We hope you love your trip to Cardiff!
Flight Deals
Useful Info
Flight Deals

Cheap Flights from Heathrow to Cardiff (LHR-CWL)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights from Heathrow to Cardiff that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent return flight deals from Heathrow to Cardiff

Wed, 25 Feb - Wed, 11 Mar
Multiple Airlines Logo
07:50 - 15:30
LHR
-
CWL
7h 40m
1 stop
Multiple Airlines Logo
15:55 - 21:05
CWL
-
LHR
5h 10m
1 stop
£154Multiple Airlines
Fri, 27 Feb - Fri, 6 Mar
Multiple Airlines Logo
15:10 - 22:00
LHR
-
CWL
6h 50m
1 stop
Multiple Airlines Logo
22:25 - 08:05
CWL
-
LHR
9h 40m
1 stop
£173Multiple Airlines
Wed, 25 Feb - Wed, 11 Mar
Multiple Airlines Logo
07:50 - 15:30
LHR
-
CWL
7h 40m
1 stop
Multiple Airlines Logo
19:35 - 14:45
CWL
-
LHR
19h 10m
2 stops
£178Multiple Airlines
Thu, 5 Mar - Sun, 8 Mar
Multiple Airlines Logo
07:50 - 15:35
LHR
-
CWL
7h 45m
1 stop
Multiple Airlines Logo
21:20 - 08:05
CWL
-
LHR
10h 45m
1 stop
£188Multiple Airlines
Wed, 11 Mar - Fri, 13 Mar
Multiple Airlines Logo
08:50 - 15:30
LHR
-
CWL
6h 40m
1 stop
Multiple Airlines Logo
22:25 - 08:05
CWL
-
LHR
9h 40m
1 stop
£197Multiple Airlines
Fri, 17 Apr - Sun, 19 Apr
Multiple Airlines Logo
15:50 - 22:20
LHR
-
CWL
6h 30m
1 stop
Multiple Airlines Logo
21:45 - 08:05
CWL
-
LHR
10h 20m
1 stop
£202Multiple Airlines
Fri, 20 Feb - Sun, 22 Feb
Multiple Airlines Logo
17:45 - 22:00
LHR
-
CWL
4h 15m
1 stop
Multiple Airlines Logo
21:20 - 10:10
CWL
-
LHR
12h 50m
1 stop
£205Multiple Airlines
Fri, 20 Feb - Sun, 22 Feb
Multiple Airlines Logo
17:45 - 22:00
LHR
-
CWL
4h 15m
1 stop
Multiple Airlines Logo
21:20 - 10:10
CWL
-
LHR
12h 50m
1 stop
£206Multiple Airlines
Sat, 14 Mar - Sat, 21 Mar
Multiple Airlines Logo
07:50 - 19:40
LHR
-
CWL
11h 50m
1 stop
Multiple Airlines Logo
20:05 - 09:05
CWL
-
LHR
13h 00m
1 stop
£207Multiple Airlines
Sat, 14 Mar - Sat, 21 Mar
Multiple Airlines Logo
07:50 - 19:40
LHR
-
CWL
11h 50m
1 stop
Multiple Airlines Logo
20:05 - 08:05
CWL
-
LHR
12h 00m
1 stop
£208Multiple Airlines
Useful Info

Good to know - Cheap tickets from London Heathrow Airport to Cardiff

Low seasonDecember
Cheapest flight£103
Best time to beat the crowds (49% less expensive on average)
Most popular time to fly and prices are also 12% lower on average.
Flight from London Heathrow Airport to Cardiff

When to book flights from Heathrow to Cardiff

Are your dates flexible? Find out the best times to travel from Heathrow to Cardiff based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated return price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or returns with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking London Heathrow Airport to Cardiff flights

  • What is the cheapest flight from London Heathrow Airport to Cardiff?

    In the last 3 days, the lowest price for a flight from London Heathrow Airport to Cardiff was £103 for a one-way ticket and £154 for a return.

  • Which aircraft models fly most regularly from London Heathrow Airport to Cardiff?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from London Heathrow Airport to Cardiff?

    SkyTeam is the only airline alliance operating flights between London Heathrow Airport and Cardiff.

  • How does KAYAK find such low prices on flights from London Heathrow Airport to Cardiff?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from London Heathrow Airport to Cardiff.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from London Heathrow Airport to Cardiff?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Cardiff from London Heathrow Airport is likely to change within 7 days, so travellers know whether to wait or book now.

  • What is the Hacker Fare option on flights from London Heathrow Airport to Cardiff?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly to Cardiff with an airline and back to London Heathrow Airport with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from London Heathrow Airport to Cardiff?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Cardiff from London Heathrow Airport up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airline flying from Heathrow to Cardiff

 
See real verified KAYAK customer reviews for airlines flying from London to Cardiff. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Heathrow to Cardiff? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.7
KLMOverall score based on 1443 reviews
7.8Boarding
7.6Comfort
8.4Crew
7.1Entertainment
7.3Food
Airline reviews

Flight was on time, staff are friendly and helpful onboard.

8.0 ExcellentShereen, Dec 2025
AMS - YUL
Read more KLM reviews

Flight was on time, staff are friendly and helpful onboard.

Delay on my previous leg, had to run to catch my flight. But that happens. Overall ok.

At the airport, terrible, I do not want to even remember it. It was too humiliating for a business class passenger.

They forgot to serve food and the crew was very unfriendly. Never experienced such a bad KLM flight. Usually fly from Toronto. New York was different.

The immigration hall in Amsterdam was understaffed, so passport checking was slower than it should be for a major airport. They need to get the automatic readers up and running for non EU passport holders. Waiting in line after a long flight feels a bit abusive.

Short flight so it was okay. Nice crew, all very pleasant and professional. We were near the back in row 27 so just as we got our drinks, we started our descent so had to drink very quickly!

KLM remains a quality flag carrier airline which maintains its standards whilst all their competitors are lowering theirs.

The baggage drop-off in Stuttgart is bad: after online check-in you cannot use the automated baggage drop off as indicated on the website. You can use the terminals but have to cue to 1 of three open and slowly working counters to drop the bags. took about 45 minutes wait time.

Our first flight was delayed so we missed our connecting flight. However it was easy to book a later flight on their app.

Klm start boarding while somw air issue in the plan

Everything you need to know for your flight from Heathrow to Cardiff

Information on your arrival and departure airports

London Heathrow Airport (LHR)
Cardiff (CWL)