Favourite airline: KLM
The most popular airline for flights from London Heathrow to Cardiff is KLM.
KLM
29 %
Aer Lingus
26 %
British Airways
21 %
Favourite connection: via Belfast City
When booking flights from London Heathrow to Cardiff 38 % of travellers prefer to fly via Belfast City.
Route
bookings
1 stopover Belfast City
06h 50min, from £217
38 %
1 stopover Amsterdam Schiphol
14h 00min, from £159
29 %
1 stopover Edinburgh
24h 15min, from £164
21 %
Return from £159.00
For the best flight deal, book the outbound flight on 01/04/19 and return flight on 06/04/19.

£159
Cheap
£0
Expensive
£0