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Round-trip from | £170 |
---|---|
One-way from | £99 |
Popular in | July |
Cheapest in | December |
Average price | £337 |
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Fly to
Route
Depart
Return
Price
LondonCardiff
LHR - CWL
LHRCWL
London Heathrow
Sat 11/10
21:10-10:35
1 stop13h 25m
Cardiff Wales
Sat 18/10
09:00-20:20
1 stop11h 20m
LondonCardiff
LHR - CWL
LHRCWL
London Heathrow
Sat 25/10
21:10-10:50
1 stop13h 40m
Cardiff Wales
Wed 29/10
15:55-21:05
1 stop5h 10m
LondonCardiff
LHR - CWL
LHRCWL
London Heathrow
Mon 13/10
20:50-15:55
2 stops19h 05m
Cardiff Wales
Thu 16/10
07:55-13:25
1 stop5h 30m
LondonCardiff
LHR - CWL
LHRCWL
London Heathrow
Wed 29/10
19:45-10:05
1 stop14h 20m
Cardiff Wales
Thu 30/10
14:30-21:05
1 stop6h 35m
LondonCardiff
LHR - CWL
LHRCWL
London Heathrow
Fri 3/10
21:10-07:30
1 stop10h 20m
Cardiff Wales
Tue 7/10
20:20-14:45
2 stops18h 25m
LondonCardiff
LHR - CWL
LHRCWL
London Heathrow
Fri 26/9
20:10-07:30
1 stop11h 20m
Cardiff Wales
Fri 3/10
12:25-20:20
1 stop7h 55m
LondonCardiff
LHR - CWL
LHRCWL
London Heathrow
Thu 25/9
15:50-12:00
1 stop20h 10m
Cardiff Wales
Thu 9/10
07:55-12:40
1 stop4h 45m
LondonCardiff
LHR - CWL
LHRCWL
London Heathrow
Fri 10/10
08:40-16:45
1 stop8h 05m
Cardiff Wales
Sun 12/10
09:50-17:50
1 stop8h 00m
LondonCardiff
LHR - CWL
LHRCWL
London Heathrow
Sat 27/9
21:10-10:35
1 stop13h 25m
LondonCardiff
LHR - CWL
LHRCWL
London Heathrow
Sun 14/9
09:50-12:45
1 stop26h 55m
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.
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.
Amsterdam (AMS) – chosen by Cheapflights users on 83% of one-stop itineraries from London Heathrow Airport to Cardiff on Cheapflights.
Flights via Belfast (BHD) have the shortest average one-way travel time for one-stop routes: 3h 49m.
Flights via Belfast (BHD) have the shortest average one-way travel time for one-stop routes: 3h 49m.
Flights via Belfast (BHD) offer the fastest connection on this route, with an average stopover time of 2h 17m.
Food
Overall
Boarding
Crew
Entertainment
Comfort
Reviews
Anonymous,Jun 2025
AMS - BOS
Food
Overall
Boarding
Crew
Entertainment
Comfort
Reviews
Anonymous,Jun 2025
AMS - BOS
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.
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.
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.
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!