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Cheap flights from London Heathrow Airport to Cardiff from £87

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 22/9. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — CWL
10 Sep — 17 Sep1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Heathrow to Cardiff

Enter your travel dates to find the best prices.

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 11 August 2026.

Thu 17/915:10 -
1 stop7h 15m
Mon 21/922:10 -
1 stop10h 55m
Deal found 10/8£153
Fri 4/921:10 -
1 stop9h 45m
Fri 18/922:45 -
1 stop9h 20m
Deal found 7/8£154
Tue 8/915:50 -
1 stop7h 00m
Tue 15/923:15 -
1 stop9h 50m
Deal found 9/8£157
Fri 4/921:10 -
1 stop9h 45m
Fri 11/922:45 -
1 stop9h 20m
Deal found 7/8£162
Wed 23/916:50 -
1 stop6h 35m
Sat 26/907:30 -
1 stop9h 50m
Deal found 7/8£163
Fri 4/921:10 -
1 stop9h 45m
Sun 6/921:45 -
1 stop10h 20m
Deal found 6/8£164
Thu 24/915:10 -
1 stop7h 15m
Thu 1/1022:50 -
1 stop10h 15m
Deal found 9/8£167
Mon 28/915:50 -
1 stop5h 55m
Tue 29/923:15 -
1 stop8h 50m
Deal found 9/8£169
Fri 11/921:10 -
1 stop9h 45m
Tue 15/923:15 -
1 stop9h 50m
Deal found 9/8£174

Find 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 11 August 2026.

Round-trip from

£153

One-way from

£87

Popular in

March

Cheapest in

May

Average price

£166
17/9-21/9
  • 17/9-21/9
  • 2 total stops
  • 18h 10m total
  • London to Cardiff
Search Deals
22/9
  • 22/9
  • 1 total stop
  • 6h 00m total
  • London to Cardiff
Search Deals
Highest demand for flights based on searches. 35% potential increase in price (£89 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 10% potential price decrease (£15 potential savings vs. average return price).
Search Deals
Average for round-trip flights in August 2026
Search Deals

Cheapflights Fare Finder

 
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 11 August 2026.
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

Cheapest return flight

LondonCardiff

LHR London Heathrow - CWL Cardiff Wales

LHRCWL

London Heathrow

Wed 23/9

16:50-23:25

1 stop6h 35m

Cardiff Wales

Sat 26/9

07:30-17:20

1 stop9h 50m

£163

LondonCardiff

LHR London Heathrow - CWL Cardiff Wales

LHRCWL

London Heathrow

Tue 8/9

15:10-22:50

1 stop7h 40m

Cardiff Wales

Tue 15/9

23:15-09:05

1 stop9h 50m

£164

LondonCardiff

LHR London Heathrow - CWL Cardiff Wales

LHRCWL

London Heathrow

Fri 4/9

21:10-06:55

1 stop9h 45m

Cardiff Wales

Fri 11/9

22:45-08:05

1 stop9h 20m

£166

LondonCardiff

LHR London Heathrow - CWL Cardiff Wales

LHRCWL

London Heathrow

Fri 28/8

21:10-06:55

1 stop9h 45m

Cardiff Wales

Tue 1/9

23:15-13:30

1 stop14h 15m

£182
Fastest return journey

LondonCardiff

LHR London Heathrow - CWL Cardiff Wales

LHRCWL

London Heathrow

Mon 7/9

16:50-21:45

1 stop4h 55m

Cardiff Wales

Mon 14/9

22:10-08:05

1 stop9h 55m

£184

LondonCardiff

LHR London Heathrow - CWL Cardiff Wales

LHRCWL

London Heathrow

Sun 6/9

15:10-21:20

1 stop6h 10m

Cardiff Wales

Sun 13/9

21:45-11:10

1 stop13h 25m

£186

LondonCardiff

LHR London Heathrow - CWL Cardiff Wales

LHRCWL

London Heathrow

Thu 26/11

06:30-13:00

1 stop6h 30m

Cardiff Wales

Sun 29/11

14:25-16:35

1 stop26h 10m

£190

LondonCardiff

LHR London Heathrow - CWL Cardiff Wales

LHRCWL

London Heathrow

Thu 10/9

16:50-22:25

1 stop5h 35m

Cardiff Wales

Mon 14/9

22:10-08:05

1 stop9h 55m

£195

LondonCardiff

LHR London Heathrow - CWL Cardiff Wales

LHRCWL

London Heathrow

Sat 5/9

20:10-21:20

1 stop25h 10m

Cardiff Wales

Sat 19/9

07:30-11:15

1 stop3h 45m

£195

LondonCardiff

LHR London Heathrow - CWL Cardiff Wales

LHRCWL

London Heathrow

Fri 9/10

15:50-22:20

1 stop6h 30m

Cardiff Wales

Sun 11/10

21:45-11:10

1 stop13h 25m

£198

Flights are sorted by cheapest return flights first.

Deals found on 9/8

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

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.

Cheapflights Insights

Everything you need to know about your flight from London Heathrow Airport to Cardiff

What’s the top stopover airport for flights from London Heathrow Airport to Cardiff?

Share of one-stop return flights from London Heathrow Airport to Cardiff chosen by Cheapflights users in the past 12 months, using the same stopover each way.

Amsterdam (AMS) – chosen by Cheapflights users on 80% of one-stop itineraries from London Heathrow Airport to Cardiff on Cheapflights.

What’s the cheapest stopover airport for flights from London Heathrow Airport to Cardiff?

Average return fare for one-stop flights from London Heathrow Airport to Cardiff, chosen by Cheapflights users in the past 12 months, with the same stopover each way.

Amsterdam (AMS) is the most affordable one-stop option, with an average return flight price of £430.

What’s the fastest stopover option from London Heathrow Airport to Cardiff?

Shortest average travel time for one-stop one-way flights from London Heathrow Airport to Cardiff, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by stopover airport.

Flights via Belfast (BHD) have the shortest average one-way travel time for one-stop routes: 3h 45m.

Which airport typically offers the quickest stopover for flights from London Heathrow Airport to Cardiff?

Average stopover duration for one-stop one-way flights from London Heathrow Airport to Cardiff, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.

Flights via Belfast (BHD) offer the fastest connection on this route, with an average stopover time of 1h 53m.

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 0 airlines. Cardiff Wales is conveniently located just 9.1 mi from Cardiff’s city center.

  • 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.

See more FAQs

Travelling to a place near Cardiff?

Book flights to Cardiff if you plan to visit one of these locations
Bridgend
Barry

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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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