Find flights
When to book
Airlines
FAQs
English
Round-trip from | £168 |
---|---|
One-way from | £157 |
Popular in | July |
Cheapest in | December |
Average price | £361 |
Fly from
Fly to
Route
Depart
Return
Price
LondonCardiff
LHR - CWL
LHRCWL
London Heathrow
Fri 7/11
16:20-22:00
1 stop5h 40m
Cardiff Wales
Fri 14/11
22:25-08:05
1 stop9h 40m
LondonCardiff
LHR - CWL
LHRCWL
London Heathrow
Fri 7/11
16:20-22:00
1 stop5h 40m
Cardiff Wales
Fri 21/11
22:25-08:05
1 stop9h 40m
LondonCardiff
LHR - CWL
LHRCWL
London Heathrow
Thu 6/11
18:50-15:40
2 stops20h 50m
Cardiff Wales
Thu 20/11
10:30-17:50
1 stop7h 20m
LondonCardiff
LHR - CWL
LHRCWL
London Heathrow
Fri 13/2
16:20-22:00
1 stop5h 40m
Cardiff Wales
Mon 16/2
23:30-10:10
1 stop10h 40m
LondonCardiff
LHR - CWL
LHRCWL
London Heathrow
Thu 6/11
18:50-22:00
3 stops27h 10m
Cardiff Wales
Thu 13/11
10:30-16:50
1 stop6h 20m
LondonCardiff
LHR - CWL
LHRCWL
London Heathrow
Sun 9/11
07:50-20:55
1 stop13h 05m
Cardiff Wales
Sun 16/11
21:20-11:25
1 stop14h 05m
LondonCardiff
LHR - CWL
LHRCWL
London Heathrow
Mon 24/11
06:00-23:05
2 stops17h 05m
Cardiff Wales
Mon 1/12
23:30-17:05
2 stops17h 35m
LondonCardiff
LHR - CWL
LHRCWL
London Heathrow
Fri 12/12
20:25-09:50
1 stop13h 25m
Cardiff Wales
Mon 15/12
17:15-20:50
1 stop3h 35m
LondonCardiff
LHR - CWL
LHRCWL
London Heathrow
Thu 6/11
10:00-16:55
1 stop6h 55m
Cardiff Wales
Sat 8/11
10:20-20:50
1 stop10h 30m
LondonCardiff
LHR - CWL
LHRCWL
London Heathrow
Sun 26/10
08:50-20:55
1 stop12h 05m
Cardiff Wales
Thu 30/10
21:40-08:05
1 stop10h 25m
Currently, September is the cheapest month in which you can book a flight from London Heathrow Airport to Cardiff (average of £191). Flying from London Heathrow Airport to Cardiff in July is currently the most expensive (average of £442). 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 at midday. If you’re flexible enough to do this you can expect to save up to 46% on your trip compared to booking a flight in the morning.
Amsterdam (AMS) – chosen by Cheapflights users on 86% 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.
Crew
Entertainment
Comfort
Food
Overall
Boarding
Reviews
Abisola,Oct 2025
LOS - CDG
Crew
Entertainment
Comfort
Food
Overall
Boarding
Reviews
Abisola,Oct 2025
LOS - CDG
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!