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Cheap flights from London Heathrow Airport to Cardiff from £119

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/6. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — CWL
22 Jan — 29 Jan1
1 adult

Cheap flight deals from Heathrow to Cardiff

Discover tips and strategies to find the most affordable flight options for your journey from Heathrow (LHR) to Cardiff (CWL). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 17 January 2025.

Round-trip from

£155

One-way from

£119

Popular in

July

Cheapest in

June

Average price

£310
1/2-15/2
  • 1/2-15/2
  • 2 total stops
  • 22h 25m total
  • London to Cardiff
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5/6
  • 5/6
  • 1 total stop
  • 4h 00m total
  • London to Cardiff
Search Deals
High demand for flights, 2% potential price rise
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Best time to find cheap flights, 4% potential price drop
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Average for round-trip flights in January 2025
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Find flight deals from Heathrow to Cardiff

Cheapest flights from Heathrow to Cardiff
Explore the most affordable flight options available from Heathrow to Cardiff. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 17 January 2025.

Sat 1/219:35LHR - CWL
1 stop12h 20mMultiple Airlines
Sat 15/209:45CWL - LHR
1 stop10h 05mMultiple Airlines
Deal found 15/1£155
Thu 6/320:25LHR - CWL
1 stop13h 30mKLM
Wed 12/310:20CWL - LHR
1 stop5h 45mKLM
Deal found 15/1£202
Fri 23/521:10LHR - CWL
1 stop14h 55mAer Lingus
Sun 25/522:10CWL - LHR
1 stop9h 50mAer Lingus
Deal found 15/1£464

Find flights from Heathrow to Cardiff within your budget

Customise your flight search to find flights from Heathrow 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, Cheapflights users made 858,174 searches. Data last updated 17 January 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

LondonCardiff

LHR - CWL

LHRCWL

London Heathrow

Sat 1/2

18:45-07:55

1 stop13h 10m

Cardiff Wales

Sat 15/2

09:45-21:05

1 stop11h 20m

£156

LondonCardiff

LHR - CWL

LHRCWL

London Heathrow

Sat 29/3

08:40-16:55

1 stop8h 15m

Cardiff Wales

Tue 8/4

17:15-20:55

1 stop3h 40m

£206

LondonCardiff

LHR - CWL

LHRCWL

London Heathrow

Sat 15/2

20:45-07:55

1 stop11h 10m

£124

Flights are sorted by cheapest return flights first.

Deals found on 16/1

Best time to book a flight from Heathrow to Cardiff

Have a flexible travel schedule? Discover the best time to fly to Cardiff from Heathrow with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Travel insights for flights from Heathrow to Cardiff

Get recent, data-driven insights about flights from Heathrow to Cardiff including ideal travel times, pricing trends, and more.

What is the cheapest month to book a flight from London Heathrow Airport to Cardiff?

Currently, July is the cheapest month in which you can book a flight from London Heathrow Airport to Cardiff (average of £169). Flying from London Heathrow Airport to Cardiff in December is currently the most expensive (average of £263). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from LHR to CWL?

Find hourly flight availability from Heathrow to Cardiff. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 17 January 2025.

A simple way to save on the total cost of your ticket is to fly from London Heathrow Airport to Cardiff in the afternoon. If you’re flexible enough to do this you can expect to save up to 18% on your trip compared to booking a flight in the morning.

Rainfall in Cardiff by month

Plan your trip to Cardiff by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Cardiff ranges from 50.0 - 90.0 inches per month. January is typically the wettest month, when rainfall can reach 90.0 mm. April is typically the driest time to visit Cardiff when rainfall is around 50.0 mm.

Temperature in Cardiff by month

Plan your trip to Cardiff by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Cardiff, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 18.0 C. Travellers hoping to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 4.0 C).

Reviews of airlines servicing Cardiff

Get insights into the airlines that provide service to Cardiff. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Cardiff. Reviews last updated 17 January 2025.
KLM
7.8
Good
1,339 reviews
Check prices

Comfort

7.7

Entertainment

7.2

Food

7.3

Crew

8.4

Overall

7.8

Boarding

7.8

Reviews

1 / 10

I could not select a seat prior to check in as systems not integrated. Different PNRs should be on reservation which would make process easier.

KLM
7.8
Good
1,339 reviews
KLM
7.8
Good
1,339 reviews
Check prices

Comfort

7.7

Entertainment

7.2

Food

7.3

Crew

8.4

Overall

7.8

Boarding

7.8

Reviews

1 / 10

I could not select a seat prior to check in as systems not integrated. Different PNRs should be on reservation which would make process easier.

Aer Lingus
7.1
Good
1,077 reviews
KLM
7.8
Good
1,339 reviews
Check prices

Comfort

7.7

Entertainment

7.2

Food

7.3

Crew

8.4

Overall

7.8

Boarding

7.8

Reviews

1 / 10

I could not select a seat prior to check in as systems not integrated. Different PNRs should be on reservation which would make process easier.

Related info for your journey

Find useful and relevant information for your journey from Heathrow to Cardiff. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Cardiff from London Heathrow?

    Most people fly into Cardiff Wales (CWL) if they book a flight to Cardiff from London Heathrow. On average, Cardiff Wales has 0 inbound flights from London Heathrow per day from 1 airline. Cardiff Wales is conveniently located just 9.1 mi from Cardiff’s city center.

  • What are the cheapest airlines flying from London Heathrow Airport to Cardiff round-trip?

    Cheapflights users have booked flights from London Heathrow Airport to Cardiff round-trip from £202. Another airline that can offer you cheap pricing is Aer Lingus. Users have found that KLM is 38% cheaper than the other options available to this destination.

  • Can I find deals for flights from Heathrow to Cardiff that include hotel bookings?

    Yes. In addition to deals on Heathrow to Cardiff flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Heathrow to Cardiff?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Heathrow to Cardiff.

  • Can I find deals for business class flights from Heathrow to Cardiff?

    Yes. Cheapflights offers flight deals from Heathrow to Cardiff by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

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

    Currently, July is the cheapest month in which you can book a flight from London Heathrow Airport to Cardiff (average of £169). Flying from London Heathrow Airport to Cardiff in December is currently the most expensive (average of £263). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Travelling to a place near London Heathrow Airport?

Book flights to London Heathrow Airport if you plan to visit one of these locations
Barry
Bridgend

Browse thousands of different options on Cheapflights for your next trip

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Top airline flying from Heathrow to Cardiff

Discover the top airline that operate flights from Heathrow to Cardiff. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 17 January 2025.
AirlineCheapestAverageFlexibilityOn-time
KLMCheapest£215Average£337FlexibilityNo cancel feeOn-time75%
Search KLM flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Heathrow to Cardiff?

Deals for Heathrow to Cardiff flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.

Why should you use Cheapflights to find cheap flight tickets from Heathrow to Cardiff?

Cheapflights simply makes it quick and affordable to book flights from Heathrow to Cardiff by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

Can Cheapflights find flights from Heathrow to Cardiff with no change fees?

Certainly. Search results for flights to Cardiff from Heathrow shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

Can Cheapflights notify me if prices for flights from Heathrow to Cardiff become cheaper?

Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and provide a valid email address to enable Price Alerts. That’s it!

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