What is the best way to travel from Cardiff to London Heathrow Airport?
Looking for a trip? Check and compare all the available Carpool and Buses to London Heathrow Airport from Cardiff. Look at different modes of transportation, search for the cheapest tickets, fastest rides and most popular stations, and see all 2 available companies to find your perfect trip!
What is the cheapest way to reach London Heathrow Airport from Cardiff?
You can reach London Heathrow Airport with just £7 by taking a Bus from National Express, but there are many more cheap offers: we have selected the best ones for you for the next few days here.
-
FlixBus3h 20m022:35CardiffKingsway Coach Stop01:55London Heathrow AirportHeathrow Coach Station0EconomyA Bus from FlixBus goes from Kingsway Coach Stop, Cardiff (United Kingdom) at 21/03/2026 22:35:00 to Heathrow Coach Station, London Heathrow Airport (United Kingdom) arriving at 22/03/2026 01:55:00. 50 Economy ticket for £17 per person are available. Travel duration is 3h 20m
-
National Express4h 57m019:53CardiffUniversity00:50London Heathrow AirportHeathrow Terminal 5 Coach Station0EconomyA Bus from National Express goes from University, Cardiff (United Kingdom) at 21/03/2026 19:53:00 to Heathrow Terminal 5 Coach Station, London Heathrow Airport (United Kingdom) arriving at 22/03/2026 00:50:00. 50 Economy ticket for £18 per person are available. Travel duration is 4h 57m
-
FlixBus4h 0m006:45CardiffKingsway Coach Stop10:45London Heathrow AirportHeathrow Terminal 5 Coach Station0EconomyA Bus from FlixBus goes from Kingsway Coach Stop, Cardiff (United Kingdom) at 21/03/2026 06:45:00 to Heathrow Terminal 5 Coach Station, London Heathrow Airport (United Kingdom) arriving at 21/03/2026 10:45:00. 50 Economy ticket for £18 per person are available. Travel duration is 4h 0m
-
FlixBus3h 40m006:45CardiffKingsway Coach Stop10:25London Heathrow AirportHeathrow Coach Station0EconomyA Bus from FlixBus goes from Kingsway Coach Stop, Cardiff (United Kingdom) at 21/03/2026 06:45:00 to Heathrow Coach Station, London Heathrow Airport (United Kingdom) arriving at 21/03/2026 10:25:00. 50 Economy ticket for £18 per person are available. Travel duration is 3h 40m
-
National Express5h 10m018:45CardiffCoach Station23:55London Heathrow AirportHeathrow Terminal 5 Coach Station0EconomyA Bus from National Express goes from Coach Station, Cardiff (United Kingdom) at 21/03/2026 18:45:00 to Heathrow Terminal 5 Coach Station, London Heathrow Airport (United Kingdom) arriving at 21/03/2026 23:55:00. 50 Economy ticket for £20 per person are available. Travel duration is 5h 10m
Cheapest Buses Saturday
-
National Express3h 15m002:45CardiffCoach Station06:00London Heathrow AirportHeathrow Coach Station0EconomyA Bus from National Express goes from Coach Station, Cardiff (United Kingdom) at 22/03/2026 02:45:00 to Heathrow Coach Station, London Heathrow Airport (United Kingdom) arriving at 22/03/2026 06:00:00. 50 Economy ticket for £13 per person are available. Travel duration is 3h 15m
-
National Express3h 30m002:45CardiffCoach Station06:15London Heathrow AirportHeathrow Terminal 5 Coach Station0EconomyA Bus from National Express goes from Coach Station, Cardiff (United Kingdom) at 22/03/2026 02:45:00 to Heathrow Terminal 5 Coach Station, London Heathrow Airport (United Kingdom) arriving at 22/03/2026 06:15:00. 50 Economy ticket for £16 per person are available. Travel duration is 3h 30m
-
FlixBus3h 45m002:10CardiffKingsway Coach Stop05:55London Heathrow AirportHeathrow Terminal 5 Coach Station0EconomyA Bus from FlixBus goes from Kingsway Coach Stop, Cardiff (United Kingdom) at 22/03/2026 02:10:00 to Heathrow Terminal 5 Coach Station, London Heathrow Airport (United Kingdom) arriving at 22/03/2026 05:55:00. 50 Economy ticket for £18 per person are available. Travel duration is 3h 45m
-
FlixBus3h 45m003:10CardiffKingsway Coach Stop06:55London Heathrow AirportHeathrow Terminal 5 Coach Station0EconomyA Bus from FlixBus goes from Kingsway Coach Stop, Cardiff (United Kingdom) at 22/03/2026 03:10:00 to Heathrow Terminal 5 Coach Station, London Heathrow Airport (United Kingdom) arriving at 22/03/2026 06:55:00. 50 Economy ticket for £18 per person are available. Travel duration is 3h 45m
-
Transport for Wales3h 23m010:45CardiffCentral Station14:08London Heathrow AirportHeathrow Terminal 5 Coach Station0EconomyA Bus from Transport for Wales goes from Central Station, Cardiff (United Kingdom) at 22/03/2026 10:45:00 to Heathrow Terminal 5 Coach Station, London Heathrow Airport (United Kingdom) arriving at 22/03/2026 14:08:00. 50 Economy ticket for £69 per person are available. Travel duration is 3h 23m
Cheapest Buses Sunday
-
National Express5h 10m018:45CardiffCoach Station23:55London Heathrow AirportHeathrow Terminal 5 Coach Station0EconomyA Bus from National Express goes from Coach Station, Cardiff (United Kingdom) at 23/03/2026 18:45:00 to Heathrow Terminal 5 Coach Station, London Heathrow Airport (United Kingdom) arriving at 23/03/2026 23:55:00. 50 Economy ticket for £11 per person are available. Travel duration is 5h 10m
-
National Express5h 50m006:50CardiffUniversity12:40London Heathrow AirportHeathrow Terminal 5 Coach Station0EconomyA Bus from National Express goes from University, Cardiff (United Kingdom) at 23/03/2026 06:50:00 to Heathrow Terminal 5 Coach Station, London Heathrow Airport (United Kingdom) arriving at 23/03/2026 12:40:00. 50 Economy ticket for £11 per person are available. Travel duration is 5h 50m
-
National Express5h 2m018:53CardiffUniversity23:55London Heathrow AirportHeathrow Terminal 5 Coach Station0EconomyA Bus from National Express goes from University, Cardiff (United Kingdom) at 23/03/2026 18:53:00 to Heathrow Terminal 5 Coach Station, London Heathrow Airport (United Kingdom) arriving at 23/03/2026 23:55:00. 50 Economy ticket for £11 per person are available. Travel duration is 5h 2m
-
FlixBus3h 40m000:45CardiffKingsway Coach Stop04:25London Heathrow AirportHeathrow Terminal 5 Coach Station0EconomyA Bus from FlixBus goes from Kingsway Coach Stop, Cardiff (United Kingdom) at 23/03/2026 00:45:00 to Heathrow Terminal 5 Coach Station, London Heathrow Airport (United Kingdom) arriving at 23/03/2026 04:25:00. 50 Economy ticket for £14 per person are available. Travel duration is 3h 40m
-
FlixBus3h 45m002:10CardiffKingsway Coach Stop05:55London Heathrow AirportHeathrow Terminal 5 Coach Station0EconomyA Bus from FlixBus goes from Kingsway Coach Stop, Cardiff (United Kingdom) at 23/03/2026 02:10:00 to Heathrow Terminal 5 Coach Station, London Heathrow Airport (United Kingdom) arriving at 23/03/2026 05:55:00. 50 Economy ticket for £14 per person are available. Travel duration is 3h 45m
Cheapest Buses Monday
-
National Express3h 55m004:30CardiffCoach Station08:25London Heathrow AirportHeathrow Terminal 5 Coach Station0EconomyA Bus from National Express goes from Coach Station, Cardiff (United Kingdom) at 24/03/2026 04:30:00 to Heathrow Terminal 5 Coach Station, London Heathrow Airport (United Kingdom) arriving at 24/03/2026 08:25:00. 50 Economy ticket for £7 per person are available. Travel duration is 3h 55m
-
National Express3h 30m004:30CardiffCoach Station08:00London Heathrow AirportHeathrow Coach Station0EconomyA Bus from National Express goes from Coach Station, Cardiff (United Kingdom) at 24/03/2026 04:30:00 to Heathrow Coach Station, London Heathrow Airport (United Kingdom) arriving at 24/03/2026 08:00:00. 50 Economy ticket for £7 per person are available. Travel duration is 3h 30m
-
National Express3h 25m005:25CardiffCoach Station08:50London Heathrow AirportHeathrow Terminal 5 Coach Station0EconomyA Bus from National Express goes from Coach Station, Cardiff (United Kingdom) at 24/03/2026 05:25:00 to Heathrow Terminal 5 Coach Station, London Heathrow Airport (United Kingdom) arriving at 24/03/2026 08:50:00. 50 Economy ticket for £9 per person are available. Travel duration is 3h 25m
-
FlixBus3h 40m000:45CardiffKingsway Coach Stop04:25London Heathrow AirportHeathrow Terminal 5 Coach Station0EconomyA Bus from FlixBus goes from Kingsway Coach Stop, Cardiff (United Kingdom) at 24/03/2026 00:45:00 to Heathrow Terminal 5 Coach Station, London Heathrow Airport (United Kingdom) arriving at 24/03/2026 04:25:00. 50 Economy ticket for £12 per person are available. Travel duration is 3h 40m
-
FlixBus3h 45m002:10CardiffKingsway Coach Stop05:55London Heathrow AirportHeathrow Terminal 5 Coach Station0EconomyA Bus from FlixBus goes from Kingsway Coach Stop, Cardiff (United Kingdom) at 24/03/2026 02:10:00 to Heathrow Terminal 5 Coach Station, London Heathrow Airport (United Kingdom) arriving at 24/03/2026 05:55:00. 50 Economy ticket for £12 per person are available. Travel duration is 3h 45m
Cheapest Buses Tuesday
-
National Express3h 15m001:40CardiffCoach Station04:55London Heathrow AirportHeathrow Terminal 5 Coach Station0EconomyA Bus from National Express goes from Coach Station, Cardiff (United Kingdom) at 25/03/2026 01:40:00 to Heathrow Terminal 5 Coach Station, London Heathrow Airport (United Kingdom) arriving at 25/03/2026 04:55:00. 50 Economy ticket for £13 per person are available. Travel duration is 3h 15m
-
National Express3h 55m016:30CardiffCoach Station20:25London Heathrow AirportHeathrow Terminal 5 Coach Station0EconomyA Bus from National Express goes from Coach Station, Cardiff (United Kingdom) at 25/03/2026 16:30:00 to Heathrow Terminal 5 Coach Station, London Heathrow Airport (United Kingdom) arriving at 25/03/2026 20:25:00. 50 Economy ticket for £13 per person are available. Travel duration is 3h 55m
-
National Express3h 40m023:40CardiffCoach Station03:20London Heathrow AirportHeathrow Terminal 5 Coach Station0EconomyA Bus from National Express goes from Coach Station, Cardiff (United Kingdom) at 25/03/2026 23:40:00 to Heathrow Terminal 5 Coach Station, London Heathrow Airport (United Kingdom) arriving at 26/03/2026 03:20:00. 50 Economy ticket for £13 per person are available. Travel duration is 3h 40m
-
FlixBus3h 40m000:45CardiffKingsway Coach Stop04:25London Heathrow AirportHeathrow Terminal 5 Coach Station0EconomyA Bus from FlixBus goes from Kingsway Coach Stop, Cardiff (United Kingdom) at 25/03/2026 00:45:00 to Heathrow Terminal 5 Coach Station, London Heathrow Airport (United Kingdom) arriving at 25/03/2026 04:25:00. 50 Economy ticket for £13 per person are available. Travel duration is 3h 40m
-
FlixBus3h 45m002:10CardiffKingsway Coach Stop05:55London Heathrow AirportHeathrow Terminal 5 Coach Station0EconomyA Bus from FlixBus goes from Kingsway Coach Stop, Cardiff (United Kingdom) at 25/03/2026 02:10:00 to Heathrow Terminal 5 Coach Station, London Heathrow Airport (United Kingdom) arriving at 25/03/2026 05:55:00. 50 Economy ticket for £13 per person are available. Travel duration is 3h 45m
Cheapest Buses Wednesday
-
National Express3h 15m003:25CardiffCoach Station06:40London Heathrow AirportHeathrow Terminal 5 Coach Station0EconomyA Bus from National Express goes from Coach Station, Cardiff (United Kingdom) at 26/03/2026 03:25:00 to Heathrow Terminal 5 Coach Station, London Heathrow Airport (United Kingdom) arriving at 26/03/2026 06:40:00. 50 Economy ticket for £13 per person are available. Travel duration is 3h 15m
-
National Express5h 50m005:20CardiffUniversity11:10London Heathrow AirportHeathrow Terminal 5 Coach Station0EconomyA Bus from National Express goes from University, Cardiff (United Kingdom) at 26/03/2026 05:20:00 to Heathrow Terminal 5 Coach Station, London Heathrow Airport (United Kingdom) arriving at 26/03/2026 11:10:00. 50 Economy ticket for £13 per person are available. Travel duration is 5h 50m
-
National Express5h 32m010:38CardiffUniversity16:10London Heathrow AirportHeathrow Terminal 5 Coach Station0EconomyA Bus from National Express goes from University, Cardiff (United Kingdom) at 26/03/2026 10:38:00 to Heathrow Terminal 5 Coach Station, London Heathrow Airport (United Kingdom) arriving at 26/03/2026 16:10:00. 50 Economy ticket for £13 per person are available. Travel duration is 5h 32m
-
FlixBus3h 40m000:45CardiffKingsway Coach Stop04:25London Heathrow AirportHeathrow Terminal 5 Coach Station0EconomyA Bus from FlixBus goes from Kingsway Coach Stop, Cardiff (United Kingdom) at 26/03/2026 00:45:00 to Heathrow Terminal 5 Coach Station, London Heathrow Airport (United Kingdom) arriving at 26/03/2026 04:25:00. 50 Economy ticket for £14 per person are available. Travel duration is 3h 40m
-
FlixBus3h 45m002:10CardiffKingsway Coach Stop05:55London Heathrow AirportHeathrow Terminal 5 Coach Station0EconomyA Bus from FlixBus goes from Kingsway Coach Stop, Cardiff (United Kingdom) at 26/03/2026 02:10:00 to Heathrow Terminal 5 Coach Station, London Heathrow Airport (United Kingdom) arriving at 26/03/2026 05:55:00. 50 Economy ticket for £14 per person are available. Travel duration is 3h 45m
Cheapest Buses Thursday
-
National Express3h 15m001:40CardiffCoach Station04:55London Heathrow AirportHeathrow Terminal 5 Coach Station0EconomyA Bus from National Express goes from Coach Station, Cardiff (United Kingdom) at 27/03/2026 01:40:00 to Heathrow Terminal 5 Coach Station, London Heathrow Airport (United Kingdom) arriving at 27/03/2026 04:55:00. 50 Economy ticket for £11 per person are available. Travel duration is 3h 15m
-
National Express3h 15m003:25CardiffCoach Station06:40London Heathrow AirportHeathrow Terminal 5 Coach Station0EconomyA Bus from National Express goes from Coach Station, Cardiff (United Kingdom) at 27/03/2026 03:25:00 to Heathrow Terminal 5 Coach Station, London Heathrow Airport (United Kingdom) arriving at 27/03/2026 06:40:00. 50 Economy ticket for £11 per person are available. Travel duration is 3h 15m
-
National Express3h 25m002:35CardiffCoach Station06:00London Heathrow AirportHeathrow Coach Station0EconomyA Bus from National Express goes from Coach Station, Cardiff (United Kingdom) at 27/03/2026 02:35:00 to Heathrow Coach Station, London Heathrow Airport (United Kingdom) arriving at 27/03/2026 06:00:00. 50 Economy ticket for £13 per person are available. Travel duration is 3h 25m
-
FlixBus3h 45m002:10CardiffKingsway Coach Stop05:55London Heathrow AirportHeathrow Terminal 5 Coach Station0EconomyA Bus from FlixBus goes from Kingsway Coach Stop, Cardiff (United Kingdom) at 27/03/2026 02:10:00 to Heathrow Terminal 5 Coach Station, London Heathrow Airport (United Kingdom) arriving at 27/03/2026 05:55:00. 50 Economy ticket for £14 per person are available. Travel duration is 3h 45m
-
FlixBus3h 45m003:10CardiffKingsway Coach Stop06:55London Heathrow AirportHeathrow Terminal 5 Coach Station0EconomyA Bus from FlixBus goes from Kingsway Coach Stop, Cardiff (United Kingdom) at 27/03/2026 03:10:00 to Heathrow Terminal 5 Coach Station, London Heathrow Airport (United Kingdom) arriving at 27/03/2026 06:55:00. 50 Economy ticket for £14 per person are available. Travel duration is 3h 45m
Cheapest Buses Friday
What are the fastest trips from Cardiff to London Heathrow Airport?
You can get to London Heathrow Airport from Cardiff in just 3h 15m with a Bus from National Express. But this is just one option, click on any of the offers below to compare it with the other available modes of transportations.
-
FlixBus3h 20m022:35CardiffKingsway Coach Stop01:55London Heathrow AirportHeathrow Coach Station0EconomyA Bus from FlixBus goes from Kingsway Coach Stop, Cardiff (United Kingdom) at 21/03/2026 22:35:00 to Heathrow Coach Station, London Heathrow Airport (United Kingdom) arriving at 22/03/2026 01:55:00. 50 Economy ticket for £17 per person are available. Travel duration is 3h 20m
-
FlixBus3h 40m006:45CardiffKingsway Coach Stop10:25London Heathrow AirportHeathrow Coach Station0EconomyA Bus from FlixBus goes from Kingsway Coach Stop, Cardiff (United Kingdom) at 21/03/2026 06:45:00 to Heathrow Coach Station, London Heathrow Airport (United Kingdom) arriving at 21/03/2026 10:25:00. 50 Economy ticket for £18 per person are available. Travel duration is 3h 40m
-
FlixBus4h 0m006:45CardiffKingsway Coach Stop10:45London Heathrow AirportHeathrow Terminal 5 Coach Station0EconomyA Bus from FlixBus goes from Kingsway Coach Stop, Cardiff (United Kingdom) at 21/03/2026 06:45:00 to Heathrow Terminal 5 Coach Station, London Heathrow Airport (United Kingdom) arriving at 21/03/2026 10:45:00. 50 Economy ticket for £18 per person are available. Travel duration is 4h 0m
-
National Express4h 57m019:53CardiffUniversity00:50London Heathrow AirportHeathrow Terminal 5 Coach Station0EconomyA Bus from National Express goes from University, Cardiff (United Kingdom) at 21/03/2026 19:53:00 to Heathrow Terminal 5 Coach Station, London Heathrow Airport (United Kingdom) arriving at 22/03/2026 00:50:00. 50 Economy ticket for £18 per person are available. Travel duration is 4h 57m
-
National Express5h 10m018:45CardiffCoach Station23:55London Heathrow AirportHeathrow Terminal 5 Coach Station0EconomyA Bus from National Express goes from Coach Station, Cardiff (United Kingdom) at 21/03/2026 18:45:00 to Heathrow Terminal 5 Coach Station, London Heathrow Airport (United Kingdom) arriving at 21/03/2026 23:55:00. 50 Economy ticket for £20 per person are available. Travel duration is 5h 10m
Fastest Buses Saturday
-
National Express3h 15m002:45CardiffCoach Station06:00London Heathrow AirportHeathrow Coach Station0EconomyA Bus from National Express goes from Coach Station, Cardiff (United Kingdom) at 22/03/2026 02:45:00 to Heathrow Coach Station, London Heathrow Airport (United Kingdom) arriving at 22/03/2026 06:00:00. 50 Economy ticket for £13 per person are available. Travel duration is 3h 15m
-
Transport for Wales3h 23m010:45CardiffCentral Station14:08London Heathrow AirportHeathrow Terminal 5 Coach Station0EconomyA Bus from Transport for Wales goes from Central Station, Cardiff (United Kingdom) at 22/03/2026 10:45:00 to Heathrow Terminal 5 Coach Station, London Heathrow Airport (United Kingdom) arriving at 22/03/2026 14:08:00. 50 Economy ticket for £69 per person are available. Travel duration is 3h 23m
-
National Express3h 30m002:45CardiffCoach Station06:15London Heathrow AirportHeathrow Terminal 5 Coach Station0EconomyA Bus from National Express goes from Coach Station, Cardiff (United Kingdom) at 22/03/2026 02:45:00 to Heathrow Terminal 5 Coach Station, London Heathrow Airport (United Kingdom) arriving at 22/03/2026 06:15:00. 50 Economy ticket for £16 per person are available. Travel duration is 3h 30m
-
FlixBus3h 45m002:10CardiffKingsway Coach Stop05:55London Heathrow AirportHeathrow Terminal 5 Coach Station0EconomyA Bus from FlixBus goes from Kingsway Coach Stop, Cardiff (United Kingdom) at 22/03/2026 02:10:00 to Heathrow Terminal 5 Coach Station, London Heathrow Airport (United Kingdom) arriving at 22/03/2026 05:55:00. 50 Economy ticket for £18 per person are available. Travel duration is 3h 45m
-
FlixBus3h 45m003:10CardiffKingsway Coach Stop06:55London Heathrow AirportHeathrow Terminal 5 Coach Station0EconomyA Bus from FlixBus goes from Kingsway Coach Stop, Cardiff (United Kingdom) at 22/03/2026 03:10:00 to Heathrow Terminal 5 Coach Station, London Heathrow Airport (United Kingdom) arriving at 22/03/2026 06:55:00. 50 Economy ticket for £18 per person are available. Travel duration is 3h 45m
Fastest Buses Sunday
-
FlixBus3h 40m000:45CardiffKingsway Coach Stop04:25London Heathrow AirportHeathrow Terminal 5 Coach Station0EconomyA Bus from FlixBus goes from Kingsway Coach Stop, Cardiff (United Kingdom) at 23/03/2026 00:45:00 to Heathrow Terminal 5 Coach Station, London Heathrow Airport (United Kingdom) arriving at 23/03/2026 04:25:00. 50 Economy ticket for £14 per person are available. Travel duration is 3h 40m
-
FlixBus3h 45m002:10CardiffKingsway Coach Stop05:55London Heathrow AirportHeathrow Terminal 5 Coach Station0EconomyA Bus from FlixBus goes from Kingsway Coach Stop, Cardiff (United Kingdom) at 23/03/2026 02:10:00 to Heathrow Terminal 5 Coach Station, London Heathrow Airport (United Kingdom) arriving at 23/03/2026 05:55:00. 50 Economy ticket for £14 per person are available. Travel duration is 3h 45m
-
National Express5h 2m018:53CardiffUniversity23:55London Heathrow AirportHeathrow Terminal 5 Coach Station0EconomyA Bus from National Express goes from University, Cardiff (United Kingdom) at 23/03/2026 18:53:00 to Heathrow Terminal 5 Coach Station, London Heathrow Airport (United Kingdom) arriving at 23/03/2026 23:55:00. 50 Economy ticket for £11 per person are available. Travel duration is 5h 2m
-
National Express5h 10m018:45CardiffCoach Station23:55London Heathrow AirportHeathrow Terminal 5 Coach Station0EconomyA Bus from National Express goes from Coach Station, Cardiff (United Kingdom) at 23/03/2026 18:45:00 to Heathrow Terminal 5 Coach Station, London Heathrow Airport (United Kingdom) arriving at 23/03/2026 23:55:00. 50 Economy ticket for £11 per person are available. Travel duration is 5h 10m
-
National Express5h 50m006:50CardiffUniversity12:40London Heathrow AirportHeathrow Terminal 5 Coach Station0EconomyA Bus from National Express goes from University, Cardiff (United Kingdom) at 23/03/2026 06:50:00 to Heathrow Terminal 5 Coach Station, London Heathrow Airport (United Kingdom) arriving at 23/03/2026 12:40:00. 50 Economy ticket for £11 per person are available. Travel duration is 5h 50m
Fastest Buses Monday
-
National Express3h 25m005:25CardiffCoach Station08:50London Heathrow AirportHeathrow Terminal 5 Coach Station0EconomyA Bus from National Express goes from Coach Station, Cardiff (United Kingdom) at 24/03/2026 05:25:00 to Heathrow Terminal 5 Coach Station, London Heathrow Airport (United Kingdom) arriving at 24/03/2026 08:50:00. 50 Economy ticket for £9 per person are available. Travel duration is 3h 25m
-
National Express3h 30m004:30CardiffCoach Station08:00London Heathrow AirportHeathrow Coach Station0EconomyA Bus from National Express goes from Coach Station, Cardiff (United Kingdom) at 24/03/2026 04:30:00 to Heathrow Coach Station, London Heathrow Airport (United Kingdom) arriving at 24/03/2026 08:00:00. 50 Economy ticket for £7 per person are available. Travel duration is 3h 30m
-
FlixBus3h 40m000:45CardiffKingsway Coach Stop04:25London Heathrow AirportHeathrow Terminal 5 Coach Station0EconomyA Bus from FlixBus goes from Kingsway Coach Stop, Cardiff (United Kingdom) at 24/03/2026 00:45:00 to Heathrow Terminal 5 Coach Station, London Heathrow Airport (United Kingdom) arriving at 24/03/2026 04:25:00. 50 Economy ticket for £12 per person are available. Travel duration is 3h 40m
-
FlixBus3h 45m002:10CardiffKingsway Coach Stop05:55London Heathrow AirportHeathrow Terminal 5 Coach Station0EconomyA Bus from FlixBus goes from Kingsway Coach Stop, Cardiff (United Kingdom) at 24/03/2026 02:10:00 to Heathrow Terminal 5 Coach Station, London Heathrow Airport (United Kingdom) arriving at 24/03/2026 05:55:00. 50 Economy ticket for £12 per person are available. Travel duration is 3h 45m
-
National Express3h 55m004:30CardiffCoach Station08:25London Heathrow AirportHeathrow Terminal 5 Coach Station0EconomyA Bus from National Express goes from Coach Station, Cardiff (United Kingdom) at 24/03/2026 04:30:00 to Heathrow Terminal 5 Coach Station, London Heathrow Airport (United Kingdom) arriving at 24/03/2026 08:25:00. 50 Economy ticket for £7 per person are available. Travel duration is 3h 55m
Fastest Buses Tuesday
-
National Express3h 15m001:40CardiffCoach Station04:55London Heathrow AirportHeathrow Terminal 5 Coach Station0EconomyA Bus from National Express goes from Coach Station, Cardiff (United Kingdom) at 25/03/2026 01:40:00 to Heathrow Terminal 5 Coach Station, London Heathrow Airport (United Kingdom) arriving at 25/03/2026 04:55:00. 50 Economy ticket for £13 per person are available. Travel duration is 3h 15m
-
National Express3h 40m023:40CardiffCoach Station03:20London Heathrow AirportHeathrow Terminal 5 Coach Station0EconomyA Bus from National Express goes from Coach Station, Cardiff (United Kingdom) at 25/03/2026 23:40:00 to Heathrow Terminal 5 Coach Station, London Heathrow Airport (United Kingdom) arriving at 26/03/2026 03:20:00. 50 Economy ticket for £13 per person are available. Travel duration is 3h 40m
-
FlixBus3h 40m000:45CardiffKingsway Coach Stop04:25London Heathrow AirportHeathrow Terminal 5 Coach Station0EconomyA Bus from FlixBus goes from Kingsway Coach Stop, Cardiff (United Kingdom) at 25/03/2026 00:45:00 to Heathrow Terminal 5 Coach Station, London Heathrow Airport (United Kingdom) arriving at 25/03/2026 04:25:00. 50 Economy ticket for £13 per person are available. Travel duration is 3h 40m
-
FlixBus3h 45m002:10CardiffKingsway Coach Stop05:55London Heathrow AirportHeathrow Terminal 5 Coach Station0EconomyA Bus from FlixBus goes from Kingsway Coach Stop, Cardiff (United Kingdom) at 25/03/2026 02:10:00 to Heathrow Terminal 5 Coach Station, London Heathrow Airport (United Kingdom) arriving at 25/03/2026 05:55:00. 50 Economy ticket for £13 per person are available. Travel duration is 3h 45m
-
National Express3h 55m016:30CardiffCoach Station20:25London Heathrow AirportHeathrow Terminal 5 Coach Station0EconomyA Bus from National Express goes from Coach Station, Cardiff (United Kingdom) at 25/03/2026 16:30:00 to Heathrow Terminal 5 Coach Station, London Heathrow Airport (United Kingdom) arriving at 25/03/2026 20:25:00. 50 Economy ticket for £13 per person are available. Travel duration is 3h 55m
Fastest Buses Wednesday
-
National Express3h 15m003:25CardiffCoach Station06:40London Heathrow AirportHeathrow Terminal 5 Coach Station0EconomyA Bus from National Express goes from Coach Station, Cardiff (United Kingdom) at 26/03/2026 03:25:00 to Heathrow Terminal 5 Coach Station, London Heathrow Airport (United Kingdom) arriving at 26/03/2026 06:40:00. 50 Economy ticket for £13 per person are available. Travel duration is 3h 15m
-
FlixBus3h 40m000:45CardiffKingsway Coach Stop04:25London Heathrow AirportHeathrow Terminal 5 Coach Station0EconomyA Bus from FlixBus goes from Kingsway Coach Stop, Cardiff (United Kingdom) at 26/03/2026 00:45:00 to Heathrow Terminal 5 Coach Station, London Heathrow Airport (United Kingdom) arriving at 26/03/2026 04:25:00. 50 Economy ticket for £14 per person are available. Travel duration is 3h 40m
-
FlixBus3h 45m002:10CardiffKingsway Coach Stop05:55London Heathrow AirportHeathrow Terminal 5 Coach Station0EconomyA Bus from FlixBus goes from Kingsway Coach Stop, Cardiff (United Kingdom) at 26/03/2026 02:10:00 to Heathrow Terminal 5 Coach Station, London Heathrow Airport (United Kingdom) arriving at 26/03/2026 05:55:00. 50 Economy ticket for £14 per person are available. Travel duration is 3h 45m
-
National Express5h 32m010:38CardiffUniversity16:10London Heathrow AirportHeathrow Terminal 5 Coach Station0EconomyA Bus from National Express goes from University, Cardiff (United Kingdom) at 26/03/2026 10:38:00 to Heathrow Terminal 5 Coach Station, London Heathrow Airport (United Kingdom) arriving at 26/03/2026 16:10:00. 50 Economy ticket for £13 per person are available. Travel duration is 5h 32m
-
National Express5h 50m005:20CardiffUniversity11:10London Heathrow AirportHeathrow Terminal 5 Coach Station0EconomyA Bus from National Express goes from University, Cardiff (United Kingdom) at 26/03/2026 05:20:00 to Heathrow Terminal 5 Coach Station, London Heathrow Airport (United Kingdom) arriving at 26/03/2026 11:10:00. 50 Economy ticket for £13 per person are available. Travel duration is 5h 50m
Fastest Buses Thursday
-
National Express3h 15m001:40CardiffCoach Station04:55London Heathrow AirportHeathrow Terminal 5 Coach Station0EconomyA Bus from National Express goes from Coach Station, Cardiff (United Kingdom) at 27/03/2026 01:40:00 to Heathrow Terminal 5 Coach Station, London Heathrow Airport (United Kingdom) arriving at 27/03/2026 04:55:00. 50 Economy ticket for £11 per person are available. Travel duration is 3h 15m
-
National Express3h 15m003:25CardiffCoach Station06:40London Heathrow AirportHeathrow Terminal 5 Coach Station0EconomyA Bus from National Express goes from Coach Station, Cardiff (United Kingdom) at 27/03/2026 03:25:00 to Heathrow Terminal 5 Coach Station, London Heathrow Airport (United Kingdom) arriving at 27/03/2026 06:40:00. 50 Economy ticket for £11 per person are available. Travel duration is 3h 15m
-
National Express3h 25m002:35CardiffCoach Station06:00London Heathrow AirportHeathrow Coach Station0EconomyA Bus from National Express goes from Coach Station, Cardiff (United Kingdom) at 27/03/2026 02:35:00 to Heathrow Coach Station, London Heathrow Airport (United Kingdom) arriving at 27/03/2026 06:00:00. 50 Economy ticket for £13 per person are available. Travel duration is 3h 25m
-
FlixBus3h 45m002:10CardiffKingsway Coach Stop05:55London Heathrow AirportHeathrow Terminal 5 Coach Station0EconomyA Bus from FlixBus goes from Kingsway Coach Stop, Cardiff (United Kingdom) at 27/03/2026 02:10:00 to Heathrow Terminal 5 Coach Station, London Heathrow Airport (United Kingdom) arriving at 27/03/2026 05:55:00. 50 Economy ticket for £14 per person are available. Travel duration is 3h 45m
-
FlixBus3h 45m003:10CardiffKingsway Coach Stop06:55London Heathrow AirportHeathrow Terminal 5 Coach Station0EconomyA Bus from FlixBus goes from Kingsway Coach Stop, Cardiff (United Kingdom) at 27/03/2026 03:10:00 to Heathrow Terminal 5 Coach Station, London Heathrow Airport (United Kingdom) arriving at 27/03/2026 06:55:00. 50 Economy ticket for £14 per person are available. Travel duration is 3h 45m
Fastest Buses Friday
Here you will find all operators and timetables for a
Bus from Cardiff to London Heathrow Airport
What are the most popular stations in Cardiff and London Heathrow Airport?
In Cardiff, you will usually depart from Central Station, Penarth Train Station or Dingle Road Train Station, while in London Heathrow Airport you will be arriving at Heathrow Coach Station, Heathrow Terminal 5 Coach Station or London Heathrow Airport - Terminal 2 & 3, but there are many more stops to explore in both locations.
How do I decide? Some tips and tricks from our experience
Are you having trouble deciding on how to get to London Heathrow Airport from Cardiff? With 5 connections between 2 Carpool and Bus operators, it can be difficult to find the one ride that will make you happy. But we have some tips that can help you make the best informed decision. First of all, the best trip is always the one that meets all your needs, so make a list of all the things that you want from this journey and look for something that will satisfy all of them. Here we will go through some of the factors mostly commonly taken into consideration.
Look for the lowest price
Ticket price is usually the main concern: even if you can afford to pay more, why do it if there are cheaper options? Saving on the trip means that you can spend more on the vacation itself! Between Cardiff and London Heathrow Airport, you can pay as low as £7 with a Bus from National Express.Travel duration
Time is also an important factor. An earlier departure may allow you to see a beautiful sunset or relax before an important event. And remember, time is money, so paying more for a shorter trip may be well worth it. For longer distances, flights are without doubt the best options, but be mindful of airport times and possible delays: a high-speed train may end up cheaper and faster! Here the quicker option is definitely the Bus from National Express: you will get to London Heathrow Airport in just 3h 15m.Comfort makes all the difference
You should always take into account what your personal travelling preferences are. Is one hand luggage enough, or are you trasporting more? Would you like to have a snack during the journey? Can you relax in a busy compartment, or do you need space for yourself? Even among the same mode of transportation, different companies will offer you varying levels of comfort and amenities. The main operators connecting Cardiff and London Heathrow Airport are National Express, FlixBus and Transport for Wales, but be sure to check what they have to offer!Save money with deals, and always compare
One last tip? Even if you live in Cardiff and London Heathrow Airport is your only destination, it may be wise to check the offers from and to nearby cities or, if you are flyng, nearby airports. Check the trips from Newlyn or to Harmondsworth, and look at flights from Cardiff Airport, and landing at Farnborough Airport. Comparing different routes may allow you to find deals or promotions you were not aware of. Consider also signing up to CheckMyBus to see even more exclusive promotions!Which companies offer a trip from Cardiff to London Heathrow Airport?
The most popular companies between Cardiff and London Heathrow Airport, are National Express, FlixBus and Transport for Wales. Be sure to check their seat class offers and the amenities that they provide.
Bus companies: National Express, FlixBus and Transport for Wales
All you need to know when you travel from Cardiff to London Heathrow Airport
Check all information on comfort and services on all modes of transports from Cardiff to London Heathrow Airport. See which seat classes are available, and what amenities are other advantages offered by the operators on your journey.
FAQs about the trip from Cardiff to London Heathrow Airport
How can I reach London Heathrow Airport from Cardiff?
Every day, there are on average 5 connections between Carpool and Bus, with which you can get to London Heathrow Airport from Cardiff.
How far is London Heathrow Airport from Cardiff?
The distance between Cardiff and London Heathrow Airport is 188.7 km.
What is the most ecofriendly mode of transport between Cardiff and London Heathrow Airport?
Trains and buses are by far the greenest options, with trains surpassing buses on longer routes. Planes will always be the worst polluters, especially in shorter flights, were the emissions from the takeoff and landing are less offset by the distance.
On this particular route, a bus will emit, per person, a total of 5 kgs of CO2, a train 7 kgs, a car 32 kgs, and a flight 46 kgs.
What is the cheapest mode of transport from Cardiff to London Heathrow Airport?
You can get to London Heathrow Airport with just £7 by taking a Bus from National Express.
What is the fastest way to get from Cardiff to London Heathrow Airport?
While a plane is travelling fastest boarding and transfer to airport consumes a lot of time. Usually, high speed trains are better than flights if pure train travel time is below 4 hours. For this particular route, you can get to London Heathrow Airport in just 3h 15m with a Bus from National Express.
More routes to Cardiff and to London Heathrow Airport
Looking for more options? Here you can see the most popular routes to Cardiff and to London Heathrow Airport. Simply click on a connection, and you’ll find all the details about the route!
- Trips to Cardiff
- Aberdeen to Cardiff
- Aberystwyth to Cardiff
- Amsterdam to Cardiff
- Bath to Cardiff
- Birmingham to Cardiff
- Bridgwater to Cardiff
- Bristol Airport to Cardiff
- Bristol to Cardiff
- Coventry to Cardiff
- Edinburgh to Cardiff
- Exeter to Cardiff
- Glasgow to Cardiff
- Liverpool to Cardiff
- London Heathrow Airport to Cardiff
- London to Cardiff
- Manchester to Cardiff
- Newcastle upon Tyne to Cardiff
- Nottingham to Cardiff
- Paris to Cardiff
- Portsmouth to Cardiff
- Reading to Cardiff
- Sheffield to Cardiff
- Swansea to Cardiff
- Trips to London Heathrow Airport
- Bath to London Heathrow Airport
- Birmingham Airport to London Heathrow Airport
- Birmingham to London Heathrow Airport
- Bristol Airport to London Heathrow Airport
- Bristol to London Heathrow Airport
- Cambridge to London Heathrow Airport
- Cirencester to London Heathrow Airport
- Coventry to London Heathrow Airport
- Derby to London Heathrow Airport
- Dudley to London Heathrow Airport
- Exeter to London Heathrow Airport
- Glasgow to London Heathrow Airport
- High Wycombe to London Heathrow Airport
- Leicester to London Heathrow Airport
- London Gatwick Airport to London Heathrow Airport
- London Stansted Airport to London Heathrow Airport
- Manchester to London Heathrow Airport
- Milton Keynes to London Heathrow Airport
- Northampton to London Heathrow Airport
- Nottingham to London Heathrow Airport
- Sheffield to London Heathrow Airport
- Swindon to London Heathrow Airport
- Taunton to London Heathrow Airport
- Wolverhampton to London Heathrow Airport
