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 1/9. Fares are subject to change and may not be available on all flights or dates of travel.
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 2 July 2025.
Round-trip from | £165 |
---|---|
One-way from | £119 |
Popular in | July |
Cheapest in | December |
Average price | £829 |
Find flight deals from Heathrow to Cardiff
Cheapest flights from Heathrow to CardiffExplore 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 2 July 2025.
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 2 July 2025.
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 2 July 2025.
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
LondonCardiff
LHR - CWL
LHRCWL
London Heathrow
Tue 12/8
06:20-15:55
1 stop9h 35m
Cardiff Wales
Tue 19/8
16:20-21:40
1 stop5h 20m
LondonCardiff
LHR - CWL
LHRCWL
London Heathrow
Sat 27/9
08:40-17:05
1 stop8h 25m
Cardiff Wales
Mon 29/9
17:15-20:55
1 stop3h 40m
LondonCardiff
LHR - CWL
LHRCWL
London Heathrow
Mon 1/9
20:50-15:55
2 stops19h 05m
LondonCardiff
LHR - CWL
LHRCWL
London Heathrow
Fri 15/8
20:55-09:15
1 stop12h 20m
LondonCardiff
LHR - CWL
LHRCWL
London Heathrow
Fri 15/8
09:45-19:15
3 stops9h 30m
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.
Cheapflights Insights
Everything you need to know about your flight from London Heathrow Airport to Cardiff
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 2 July 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 19% on your trip compared to booking a flight in the morning.
How much does it cost for a return flight from London Heathrow Airport to Cardiff?
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 2 July 2025.
Read through reviews of airlines operating flights from London Heathrow Airport to Cardiff, such as KLM and British Airways. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Entertainment
Boarding
Crew
Comfort
Food
Overall
Reviews
Anonymous,Jun 2025
AMS - BOS
Entertainment
Boarding
Crew
Comfort
Food
Overall
Reviews
Anonymous,Jun 2025
AMS - BOS
Entertainment
Boarding
Crew
Comfort
Food
Overall
Reviews
Anonymous,Jun 2025
AMS - BOS
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.
Travelling to a place near London Heathrow Airport?
Book flights to London Heathrow Airport if you plan to visit one of these locationsBrowse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
Alternative routes for Heathrow to Cardiff
See prices for flight routes from nearby airports that may be better suited for you.
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 2 July 2025.
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!