CWL - LHR

£191 Find Cheap Flights from Cardiff to London Heathrow Airport

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Cardiff to Heathrow departing on 6/11. 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 London Heathrow Airport

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

Cheap Flights from Cardiff to Heathrow (CWL-LHR)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights from Cardiff to Heathrow 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 Cardiff to Heathrow

Thu, 13 Nov - Mon, 17 Nov
Multiple Airlines Logo
10:30 - 16:50CWL-LHR
6h 20m1 stop
Multiple Airlines Logo
17:45 - 23:05LHR-CWL
5h 20m1 stop
£212Multiple Airlines
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Wed, 12 Nov - Sun, 16 Nov
Multiple Airlines Logo
15:55 - 21:05CWL-LHR
5h 10m1 stop
Multiple Airlines Logo
17:35 - 23:05LHR-CWL
29h 30m3 stops
£275Multiple Airlines
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Wed, 12 Nov - Sun, 16 Nov
Multiple Airlines Logo
15:55 - 21:05CWL-LHR
5h 10m1 stop
Multiple Airlines Logo
10:00 - 23:50LHR-CWL
13h 50m2 stops
£294Multiple Airlines
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Wed, 12 Nov - Sun, 16 Nov
Multiple Airlines Logo
14:00 - 08:05CWL-LHR
18h 05m2 stops
Multiple Airlines Logo
17:35 - 23:05LHR-CWL
29h 30m3 stops
£344Multiple Airlines
Find Deal
Wed, 12 Nov - Sun, 16 Nov
Multiple Airlines Logo
15:55 - 21:05CWL-LHR
5h 10m1 stop
Multiple Airlines Logo
08:50 - 20:55LHR-CWL
12h 05m1 stop
£350Multiple Airlines
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Sat, 15 Nov - Sun, 16 Nov
KLM Logo
10:20 - 17:00CWL-LHR
6h 40m1 stop
KLM Logo
08:40 - 16:50LHR-CWL
8h 10m1 stop
£374KLM
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Mon, 30 Mar - Tue, 31 Mar
British Airways Logo
12:00 - 19:50CWL-LHR
7h 50m1 stop
British Airways Logo
07:30 - 11:30LHR-CWL
4h 00m1 stop
£392British Airways
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Mon, 30 Mar - Tue, 31 Mar
British Airways Logo
12:00 - 16:45CWL-LHR
4h 45m1 stop
British Airways Logo
07:30 - 11:30LHR-CWL
4h 00m1 stop
£395British Airways
Find Deal
Mon, 30 Mar - Tue, 31 Mar
British Airways Logo
12:00 - 16:45CWL-LHR
4h 45m1 stop
British Airways Logo
07:30 - 11:30LHR-CWL
4h 00m1 stop
£396British Airways
Find Deal

Everything you should know

Top airlines
KLM
Cheapest • from £374 (return)
KLM
Best reviews • 7.7 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Cheapest return fare
£212
Multiple Airlines
Thu 13/11Mon 17/11
CWL - LHR • 1 stop
Cheapest one-way flight
£198
British Airways
Thu 6/11
CWL - LHR • 1 stop
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KAYAK searches hundreds of sites at once to find you the best travel deals.
We hope you love your trip to Heathrow!
Booking Insights

KAYAK's insights & trends for Cardiff to Heathrow flights

Get data-powered insights and trends into flights from Cardiff to Heathrow to help you find the cheapest flights, the best time to fly and much more.

What’s the cheapest day of the week to fly from Cardiff to London Heathrow Airport?

The average price of all round-trip flights from Cardiff to London Heathrow Airport clicked on KAYAK for each day over the last 12 months.

If your flying dates are flexible, you should consider flying to London Heathrow Airport on a Saturday, as we generally find the cheapest rates on that day for this route. On the other hand, Friday is the most expensive day to fly from Cardiff to London Heathrow Airport. For your return ticket, we recommend flying on a Wednesday and avoiding Fridays for the best deals.

Find deals

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

Cheapest flight£198
Flight from Cardiff to London Heathrow Airport

When to book flights from Cardiff to Heathrow

Are your dates flexible? Find out the best times to travel from Cardiff to Heathrow 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 Cardiff to London Heathrow Airport flights

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

    In the last 3 days, the lowest price for a flight from Cardiff to London Heathrow Airport was £198 for a one-way ticket and £212 for a return.

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

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

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

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

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

    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 Cardiff to London Heathrow Airport.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to London Heathrow Airport from Cardiff 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 Cardiff to London Heathrow Airport?

    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 London Heathrow Airport with an airline and back to Cardiff with another airline.

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

    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 London Heathrow Airport from Cardiff 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 Cardiff to Heathrow

 
See real verified KAYAK customer reviews for airlines flying from Cardiff to London. 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 Cardiff to Heathrow? 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 1406 reviews
7.7Comfort
7.1Entertainment
7.8Boarding
7.3Food
8.4Crew
Airline reviews

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

2.0 MediocreElizabeth, Oct 2025CDG - AMS
Read more KLM reviews

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

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.

Over 1 Hr delay. No APU so no AC on ground. Plane was hot during boarding and then they closed the doors over 20 minutes before engine start so interior of plane was steamy hot and stuffy. Could have been helped by opening doors until ready to depart.

Ad experience - been flying many years with them but they are losing out to other carriers with their service and bagage / seating policy. My 2 12-yo kids were not placed with the parent. Absurdity.

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.

My flight was delayed by 6 hours then I missed BOTH of my connecting flights, I then had to stay in the AIRPORT at JFK because soooooo many people also suffered from missing flights and there was no hotels available. I would like to be compensated for this experience! I had to stay in the airport for over 16 hours!

Klm start boarding while somw air issue in the plan

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

Information on your arrival and departure airports

Cardiff (CWL)
Heathrow (LHR)

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