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LHR - CWL

£119 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 15/6. 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

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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Cheap Flight Deals 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.

Recent return flight deals from Heathrow to Cardiff

KAYAK's recommended return flight deals from the most popular airlines that fly from Heathrow to Cardiff.
Discover the best prices for you by selecting your travel dates on KAYAK.
Choose your dates
Logo
21:10 - 07:25LHR-CWL
10h 15m1 stop
Logo
20:05 - 18:00CWL-LHR
21h 55m2 stops
£220
Find Deal
Wed, 21 May - Wed, 28 May
Logo
07:40 - 12:00LHR-CWL
4h 20m1 stop
Logo
11:00 - 20:20CWL-LHR
9h 20m1 stop
£221
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Fri, 6 Jun - Sun, 8 Jun
KLM Logo
20:55 - 09:15LHR-CWL
12h 20m1 stop
KLM Logo
17:15 - 20:55CWL-LHR
3h 40m1 stop
£239KLM
Find Deal
Tue, 20 May - Tue, 3 Jun
KLM Logo
20:55 - 09:15LHR-CWL
12h 20m1 stop
KLM Logo
17:15 - 20:55CWL-LHR
3h 40m1 stop
£251KLM
Find Deal
Tue, 20 May - Tue, 27 May
KLM Logo
20:55 - 09:15LHR-CWL
12h 20m1 stop
KLM Logo
17:15 - 20:55CWL-LHR
3h 40m1 stop
£266KLM
Find Deal
Mon, 7 Jul - Fri, 11 Jul
Logo
07:40 - 11:30LHR-CWL
3h 50m1 stop
Logo
12:00 - 17:25CWL-LHR
5h 25m1 stop
£278
Find Deal
Wed, 21 May - Wed, 28 May
KLM Logo
20:55 - 09:15LHR-CWL
12h 20m1 stop
KLM Logo
09:50 - 19:30CWL-LHR
9h 40m1 stop
£295KLM
Find Deal
Sun, 8 Jun - Sun, 15 Jun
British Airways Logo
18:00 - 11:30LHR-CWL
17h 30m1 stop
British Airways Logo
12:00 - 20:50CWL-LHR
8h 50m1 stop
£412British Airways
Find Deal
Fri, 3 Oct - Mon, 6 Oct
British Airways Logo
18:15 - 11:30LHR-CWL
17h 15m2 stops
British Airways Logo
09:00 - 20:50CWL-LHR
11h 50m2 stops
£645British Airways
Find Deal
Mon, 7 Jul - Fri, 11 Jul
British Airways Logo
21:45 - 11:30LHR-CWL
13h 45m2 stops
British Airways Logo
12:00 - 20:50CWL-LHR
8h 50m2 stops
£658British Airways
Find Deal
Sun, 8 Jun - Sun, 15 Jun

KAYAK's insights & trends for Heathrow to Cardiff flights

Get data-powered insights and trends into flights from Heathrow to Cardiff 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 London Heathrow Airport to Cardiff?

The average price of all round-trip flights from London Heathrow Airport to Cardiff clicked on KAYAK for each day over the last 12 months.
When flying from London Heathrow Airport to Cardiff, you should consider leaving on a Wednesday and avoid Fridays if you are looking for the best rates. For your return to London Heathrow Airport, you’ll find the best rates on Wednesdays and the most expensive ones on Saturdays.

What is the cheapest month to fly from London Heathrow Airport to Cardiff?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from London Heathrow Airport to Cardiff, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.
The cheapest month for flights from London Heathrow Airport to Cardiff is December, where tickets cost £229 (return) on average. On the other hand, the most expensive months are April and July, where the average cost of round-trip tickets is £714 and £445 respectively.
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Good to know - Cheap tickets from London Heathrow Airport to Cardiff

Low season

January

High season

July

Cheapest flight

£119
Best time to beat the crowds (13% less expensive on average)
Most popular time to fly (24% more expensive 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 £158 for a one-way ticket and £292 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?

    oneworld, and SkyTeam are the airline alliances operating flights between London Heathrow Airport and Cardiff, with SkyTeam being the most commonly used for this route.

  • 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.

See more FAQs

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.
7.8
KLMOverall score based on 1333 reviews
7.7Comfort
7.1Entertainment
7.8Boarding
8.4Crew
7.2Food
Airline reviews

I appreciate that KLM was proactive in informing me of the 2 hour delay which enabled me to replan my travel. It was a bit stressful not knowing whether my connection from Montreal to Ottawa was happening. But the ground and air crew did a good job at comforting and assuring me.

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

I appreciate that KLM was proactive in informing me of the 2 hour delay which enabled me to replan my travel. It was a bit stressful not knowing whether my connection from Montreal to Ottawa was happening. But the ground and air crew did a good job at comforting and assuring me.

Cabin crew professional, polite and friendly, boarding was seemless, but come on KLM surely you can do better than a pack of cheesy biscuits as an inflight snack

Cabin crew were excellent, very proffesional, polite and friendly, in flight snack was underwhelming, a packet of cheese biscuits, im sure KLM could run to a sandwich!

Legroom not all it could be, especially when the seat in front is reclined. Otherwise it was good, food and beverage were nice.

This portion of the flight was through Indigo. A local carrier. So all economy seating. No real service some refreshments for purchase standard economy stuff.

Transfer at Amsterdam airport is very convenient and the airport is easy to navigate. Boarding was also quick and easy. Cabin crew were excellent and the meals were good, although lacking in options.

I flew premium economy and this was a good option. Although the seats didn’t recline much, I was able to get some sleep with my head propped against the window. The food was good and the entertainment was wonderful The staff were very attentive and professional

Overall very poor. Flight was disorganised, staff were rude and this is my second experience with KLM that I've had baggage go missing. It feels like, if you are an economy customer, KLM staff do not show you any care. I shall never fly with KLM again. Worst airline in Europe

Great boarding, great short flight but no entertainment whatsoever and no wifi. Prepare to disembark by a staircase.

Transfer at CDG to connecting KLM flight to Amsterdam was a NIGHTMARE. LONG WALKWAYS, NO MOVING WALKWAYS, POOR signage, Have to take a train & No staff visible to help navigate the maze. AVOID TRANSFER AT CDG AT ALL COST.

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

Information on your arrival and departure airports

Cardiff (CWL)
London Heathrow Airport (LHR)

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