What is the best way to travel from Southampton to Cardiff?
Looking for a trip? Check and compare all the available Buses and Trains to Cardiff from Southampton. Look at different modes of transportation, search for the cheapest tickets, fastest rides and most popular stations, and see all 5 available companies to find your perfect trip!
What is the cheapest way to reach Cardiff from Southampton?
You can reach Cardiff with just £20 by taking a Bus from FlixBus, but there are many more cheap offers: we have selected the best ones for you for the next few days here.
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FlixBus7h 20m017:00SouthamptonCoach Station00:20CardiffKingsway Coach Stop0EconomyA Bus from FlixBus goes from Coach Station, Southampton (United Kingdom) at 19/12/2025 17:00:00 to Kingsway Coach Stop, Cardiff (United Kingdom) arriving at 20/12/2025 00:20:00. 50 Economy ticket for £28 per person are available. Travel duration is 7h 20m
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FlixBus7h 5m017:15SouthamptonUniversity00:20CardiffKingsway Coach Stop0EconomyA Bus from FlixBus goes from University, Southampton (United Kingdom) at 19/12/2025 17:15:00 to Kingsway Coach Stop, Cardiff (United Kingdom) arriving at 20/12/2025 00:20:00. 50 Economy ticket for £28 per person are available. Travel duration is 7h 5m
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FlixBus7h 25m011:10SouthamptonUniversity18:35CardiffKingsway Coach Stop0EconomyA Bus from FlixBus goes from University, Southampton (United Kingdom) at 19/12/2025 11:10:00 to Kingsway Coach Stop, Cardiff (United Kingdom) arriving at 19/12/2025 18:35:00. 50 Economy ticket for £31 per person are available. Travel duration is 7h 25m
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National Express6h 15m010:45SouthamptonCoach Station17:00CardiffCoach Station0EconomyA Bus from National Express goes from Coach Station, Southampton (United Kingdom) at 19/12/2025 10:45:00 to Coach Station, Cardiff (United Kingdom) arriving at 19/12/2025 17:00:00. 50 Economy ticket for £62 per person are available. Travel duration is 6h 15m
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National Express5h 40m015:20SouthamptonCoach Station21:00CardiffCoach Station0EconomyA Bus from National Express goes from Coach Station, Southampton (United Kingdom) at 19/12/2025 15:20:00 to Coach Station, Cardiff (United Kingdom) arriving at 19/12/2025 21:00:00. 50 Economy ticket for £62 per person are available. Travel duration is 5h 40m
Cheapest Buses Friday
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FlixBus7h 20m017:00SouthamptonCoach Station00:20CardiffKingsway Coach Stop0EconomyA Bus from FlixBus goes from Coach Station, Southampton (United Kingdom) at 20/12/2025 17:00:00 to Kingsway Coach Stop, Cardiff (United Kingdom) arriving at 21/12/2025 00:20:00. 50 Economy ticket for £23 per person are available. Travel duration is 7h 20m
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FlixBus7h 5m017:15SouthamptonUniversity00:20CardiffKingsway Coach Stop0EconomyA Bus from FlixBus goes from University, Southampton (United Kingdom) at 20/12/2025 17:15:00 to Kingsway Coach Stop, Cardiff (United Kingdom) arriving at 21/12/2025 00:20:00. 50 Economy ticket for £23 per person are available. Travel duration is 7h 5m
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FlixBus7h 45m010:50SouthamptonCoach Station18:35CardiffKingsway Coach Stop0EconomyA Bus from FlixBus goes from Coach Station, Southampton (United Kingdom) at 20/12/2025 10:50:00 to Kingsway Coach Stop, Cardiff (United Kingdom) arriving at 20/12/2025 18:35:00. 50 Economy ticket for £26 per person are available. Travel duration is 7h 45m
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National Express6h 45m004:15SouthamptonCoach Station11:00CardiffCoach Station0EconomyA Bus from National Express goes from Coach Station, Southampton (United Kingdom) at 20/12/2025 04:15:00 to Coach Station, Cardiff (United Kingdom) arriving at 20/12/2025 11:00:00. 50 Economy ticket for £52 per person are available. Travel duration is 6h 45m
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National Express5h 50m014:45SouthamptonCoach Station20:35CardiffCoach Station0EconomyA Bus from National Express goes from Coach Station, Southampton (United Kingdom) at 20/12/2025 14:45:00 to Coach Station, Cardiff (United Kingdom) arriving at 20/12/2025 20:35:00. 50 Economy ticket for £52 per person are available. Travel duration is 5h 50m
Cheapest Buses Saturday
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FlixBus7h 5m017:15Southampton00:20CardiffKingsway Coach Stop0EconomyA Bus from FlixBus goes from , Southampton (United Kingdom) at 21/12/2025 17:15:00 to Kingsway Coach Stop, Cardiff (United Kingdom) arriving at 22/12/2025 00:20:00. 50 Economy ticket for £20 per person are available. Travel duration is 7h 5m
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FlixBus7h 25m011:10Southampton18:35CardiffKingsway Coach Stop0EconomyA Bus from FlixBus goes from , Southampton (United Kingdom) at 21/12/2025 11:10:00 to Kingsway Coach Stop, Cardiff (United Kingdom) arriving at 21/12/2025 18:35:00. 50 Economy ticket for £23 per person are available. Travel duration is 7h 25m
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FlixBus7h 5m009:30Southampton16:35CardiffKingsway Coach Stop0EconomyA Bus from FlixBus goes from , Southampton (United Kingdom) at 21/12/2025 09:30:00 to Kingsway Coach Stop, Cardiff (United Kingdom) arriving at 21/12/2025 16:35:00. 50 Economy ticket for £29 per person are available. Travel duration is 7h 5m
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National Express6h 10m012:15SouthamptonCoach Station18:25CardiffCoach Station0EconomyA Bus from National Express goes from Coach Station, Southampton (United Kingdom) at 21/12/2025 12:15:00 to Coach Station, Cardiff (United Kingdom) arriving at 21/12/2025 18:25:00. 50 Economy ticket for £52 per person are available. Travel duration is 6h 10m
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National Express5h 50m014:45SouthamptonCoach Station20:35CardiffCoach Station0EconomyA Bus from National Express goes from Coach Station, Southampton (United Kingdom) at 21/12/2025 14:45:00 to Coach Station, Cardiff (United Kingdom) arriving at 21/12/2025 20:35:00. 50 Economy ticket for £52 per person are available. Travel duration is 5h 50m
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Great Western Railway (GWR)2h 45m009:57SouthamptonCentral Station12:42CardiffCentral Station0EconomyA Train from Great Western Railway (GWR) goes from Central Station, Southampton (United Kingdom) at 21/12/2025 09:57:00 to Central Station, Cardiff (United Kingdom) arriving at 21/12/2025 12:42:00. 50 Economy ticket for £61 per person are available. Travel duration is 2h 45m
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South Western Railway3h 34m006:55SouthamptonCentral Station10:29CardiffCentral Station0EconomyA Train from South Western Railway goes from Central Station, Southampton (United Kingdom) at 21/12/2025 06:55:00 to Central Station, Cardiff (United Kingdom) arriving at 21/12/2025 10:29:00. 50 Economy ticket for £110 per person are available. Travel duration is 3h 34m
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South Western Railway3h 2m008:26SouthamptonCentral Station11:28CardiffCentral Station0EconomyA Train from South Western Railway goes from Central Station, Southampton (United Kingdom) at 21/12/2025 08:26:00 to Central Station, Cardiff (United Kingdom) arriving at 21/12/2025 11:28:00. 50 Economy ticket for £110 per person are available. Travel duration is 3h 2m
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CrossCountry3h 18m009:15SouthamptonCentral Station12:33CardiffCentral Station0EconomyA Train from CrossCountry goes from Central Station, Southampton (United Kingdom) at 21/12/2025 09:15:00 to Central Station, Cardiff (United Kingdom) arriving at 21/12/2025 12:33:00. 50 Economy ticket for £110 per person are available. Travel duration is 3h 18m
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CrossCountry3h 19m010:15SouthamptonCentral Station13:34CardiffCentral Station0EconomyA Train from CrossCountry goes from Central Station, Southampton (United Kingdom) at 21/12/2025 10:15:00 to Central Station, Cardiff (United Kingdom) arriving at 21/12/2025 13:34:00. 50 Economy ticket for £110 per person are available. Travel duration is 3h 19m
Cheapest Buses Sunday
Cheapest Trains Sunday
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FlixBus7h 20m017:00SouthamptonCoach Station00:20CardiffKingsway Coach Stop0EconomyA Bus from FlixBus goes from Coach Station, Southampton (United Kingdom) at 22/12/2025 17:00:00 to Kingsway Coach Stop, Cardiff (United Kingdom) arriving at 23/12/2025 00:20:00. 50 Economy ticket for £24 per person are available. Travel duration is 7h 20m
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FlixBus7h 5m017:15SouthamptonUniversity00:20CardiffKingsway Coach Stop0EconomyA Bus from FlixBus goes from University, Southampton (United Kingdom) at 22/12/2025 17:15:00 to Kingsway Coach Stop, Cardiff (United Kingdom) arriving at 23/12/2025 00:20:00. 50 Economy ticket for £24 per person are available. Travel duration is 7h 5m
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FlixBus7h 45m010:50SouthamptonCoach Station18:35CardiffKingsway Coach Stop0EconomyA Bus from FlixBus goes from Coach Station, Southampton (United Kingdom) at 22/12/2025 10:50:00 to Kingsway Coach Stop, Cardiff (United Kingdom) arriving at 22/12/2025 18:35:00. 50 Economy ticket for £30 per person are available. Travel duration is 7h 45m
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National Express6h 45m004:15SouthamptonCoach Station11:00CardiffCoach Station0EconomyA Bus from National Express goes from Coach Station, Southampton (United Kingdom) at 22/12/2025 04:15:00 to Coach Station, Cardiff (United Kingdom) arriving at 22/12/2025 11:00:00. 50 Economy ticket for £60 per person are available. Travel duration is 6h 45m
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National Express6h 0m006:25SouthamptonCoach Station12:25CardiffCoach Station0EconomyA Bus from National Express goes from Coach Station, Southampton (United Kingdom) at 22/12/2025 06:25:00 to Coach Station, Cardiff (United Kingdom) arriving at 22/12/2025 12:25:00. 50 Economy ticket for £60 per person are available. Travel duration is 6h 0m
Cheapest Buses Monday
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FlixBus7h 20m017:00SouthamptonCoach Station00:20CardiffKingsway Coach Stop0EconomyA Bus from FlixBus goes from Coach Station, Southampton (United Kingdom) at 23/12/2025 17:00:00 to Kingsway Coach Stop, Cardiff (United Kingdom) arriving at 24/12/2025 00:20:00. 50 Economy ticket for £25 per person are available. Travel duration is 7h 20m
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FlixBus7h 5m017:15SouthamptonUniversity00:20CardiffKingsway Coach Stop0EconomyA Bus from FlixBus goes from University, Southampton (United Kingdom) at 23/12/2025 17:15:00 to Kingsway Coach Stop, Cardiff (United Kingdom) arriving at 24/12/2025 00:20:00. 50 Economy ticket for £25 per person are available. Travel duration is 7h 5m
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FlixBus7h 0m007:15SouthamptonCoach Station14:15CardiffKingsway Coach Stop0EconomyA Bus from FlixBus goes from Coach Station, Southampton (United Kingdom) at 23/12/2025 07:15:00 to Kingsway Coach Stop, Cardiff (United Kingdom) arriving at 23/12/2025 14:15:00. 50 Economy ticket for £28 per person are available. Travel duration is 7h 0m
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National Express6h 0m015:00SouthamptonCoach Station21:00CardiffCoach Station0EconomyA Bus from National Express goes from Coach Station, Southampton (United Kingdom) at 23/12/2025 15:00:00 to Coach Station, Cardiff (United Kingdom) arriving at 23/12/2025 21:00:00. 50 Economy ticket for £50 per person are available. Travel duration is 6h 0m
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National Express6h 10m016:30SouthamptonCoach Station22:40CardiffCoach Station0EconomyA Bus from National Express goes from Coach Station, Southampton (United Kingdom) at 23/12/2025 16:30:00 to Coach Station, Cardiff (United Kingdom) arriving at 23/12/2025 22:40:00. 50 Economy ticket for £50 per person are available. Travel duration is 6h 10m
Cheapest Buses Tuesday
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FlixBus7h 5m009:30SouthamptonUniversity16:35CardiffKingsway Coach Stop0EconomyA Bus from FlixBus goes from University, Southampton (United Kingdom) at 24/12/2025 09:30:00 to Kingsway Coach Stop, Cardiff (United Kingdom) arriving at 24/12/2025 16:35:00. 50 Economy ticket for £29 per person are available. Travel duration is 7h 5m
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FlixBus7h 0m007:15SouthamptonCoach Station14:15CardiffKingsway Coach Stop0EconomyA Bus from FlixBus goes from Coach Station, Southampton (United Kingdom) at 24/12/2025 07:15:00 to Kingsway Coach Stop, Cardiff (United Kingdom) arriving at 24/12/2025 14:15:00. 50 Economy ticket for £30 per person are available. Travel duration is 7h 0m
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FlixBus7h 20m009:15SouthamptonCoach Station16:35CardiffKingsway Coach Stop0EconomyA Bus from FlixBus goes from Coach Station, Southampton (United Kingdom) at 24/12/2025 09:15:00 to Kingsway Coach Stop, Cardiff (United Kingdom) arriving at 24/12/2025 16:35:00. 50 Economy ticket for £30 per person are available. Travel duration is 7h 20m
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National Express6h 25m012:15SouthamptonCoach Station18:40CardiffCoach Station0EconomyA Bus from National Express goes from Coach Station, Southampton (United Kingdom) at 24/12/2025 12:15:00 to Coach Station, Cardiff (United Kingdom) arriving at 24/12/2025 18:40:00. 50 Economy ticket for £60 per person are available. Travel duration is 6h 25m
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National Express6h 0m015:00SouthamptonCoach Station21:00CardiffCoach Station0EconomyA Bus from National Express goes from Coach Station, Southampton (United Kingdom) at 24/12/2025 15:00:00 to Coach Station, Cardiff (United Kingdom) arriving at 24/12/2025 21:00:00. 50 Economy ticket for £60 per person are available. Travel duration is 6h 0m
Cheapest Buses Wednesday
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National Express6h 20m006:25SouthamptonCoach Station12:45CardiffCoach Station0EconomyA Bus from National Express goes from Coach Station, Southampton (United Kingdom) at 25/12/2025 06:25:00 to Coach Station, Cardiff (United Kingdom) arriving at 25/12/2025 12:45:00. 50 Economy ticket for £119 per person are available. Travel duration is 6h 20m
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National Express6h 20m010:25SouthamptonCoach Station16:45CardiffCoach Station0EconomyA Bus from National Express goes from Coach Station, Southampton (United Kingdom) at 25/12/2025 10:25:00 to Coach Station, Cardiff (United Kingdom) arriving at 25/12/2025 16:45:00. 50 Economy ticket for £119 per person are available. Travel duration is 6h 20m
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National Express7h 20m014:25SouthamptonCoach Station21:45CardiffCoach Station0EconomyA Bus from National Express goes from Coach Station, Southampton (United Kingdom) at 25/12/2025 14:25:00 to Coach Station, Cardiff (United Kingdom) arriving at 25/12/2025 21:45:00. 50 Economy ticket for £119 per person are available. Travel duration is 7h 20m
Cheapest Buses Thursday
What are the fastest trips from Southampton to Cardiff?
You can get to Cardiff from Southampton in just 2h 45m with a Train from Great Western Railway (GWR). But this is just one option, click on any of the offers below to compare it with the other available modes of transportations.
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National Express5h 40m015:20SouthamptonCoach Station21:00CardiffCoach Station0EconomyA Bus from National Express goes from Coach Station, Southampton (United Kingdom) at 19/12/2025 15:20:00 to Coach Station, Cardiff (United Kingdom) arriving at 19/12/2025 21:00:00. 50 Economy ticket for £62 per person are available. Travel duration is 5h 40m
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National Express6h 15m010:45SouthamptonCoach Station17:00CardiffCoach Station0EconomyA Bus from National Express goes from Coach Station, Southampton (United Kingdom) at 19/12/2025 10:45:00 to Coach Station, Cardiff (United Kingdom) arriving at 19/12/2025 17:00:00. 50 Economy ticket for £62 per person are available. Travel duration is 6h 15m
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FlixBus7h 5m017:15SouthamptonUniversity00:20CardiffKingsway Coach Stop0EconomyA Bus from FlixBus goes from University, Southampton (United Kingdom) at 19/12/2025 17:15:00 to Kingsway Coach Stop, Cardiff (United Kingdom) arriving at 20/12/2025 00:20:00. 50 Economy ticket for £28 per person are available. Travel duration is 7h 5m
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FlixBus7h 20m017:00SouthamptonCoach Station00:20CardiffKingsway Coach Stop0EconomyA Bus from FlixBus goes from Coach Station, Southampton (United Kingdom) at 19/12/2025 17:00:00 to Kingsway Coach Stop, Cardiff (United Kingdom) arriving at 20/12/2025 00:20:00. 50 Economy ticket for £28 per person are available. Travel duration is 7h 20m
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FlixBus7h 25m011:10SouthamptonUniversity18:35CardiffKingsway Coach Stop0EconomyA Bus from FlixBus goes from University, Southampton (United Kingdom) at 19/12/2025 11:10:00 to Kingsway Coach Stop, Cardiff (United Kingdom) arriving at 19/12/2025 18:35:00. 50 Economy ticket for £31 per person are available. Travel duration is 7h 25m
Fastest Buses Friday
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National Express5h 50m014:45SouthamptonCoach Station20:35CardiffCoach Station0EconomyA Bus from National Express goes from Coach Station, Southampton (United Kingdom) at 20/12/2025 14:45:00 to Coach Station, Cardiff (United Kingdom) arriving at 20/12/2025 20:35:00. 50 Economy ticket for £52 per person are available. Travel duration is 5h 50m
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National Express6h 45m004:15SouthamptonCoach Station11:00CardiffCoach Station0EconomyA Bus from National Express goes from Coach Station, Southampton (United Kingdom) at 20/12/2025 04:15:00 to Coach Station, Cardiff (United Kingdom) arriving at 20/12/2025 11:00:00. 50 Economy ticket for £52 per person are available. Travel duration is 6h 45m
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FlixBus7h 5m017:15SouthamptonUniversity00:20CardiffKingsway Coach Stop0EconomyA Bus from FlixBus goes from University, Southampton (United Kingdom) at 20/12/2025 17:15:00 to Kingsway Coach Stop, Cardiff (United Kingdom) arriving at 21/12/2025 00:20:00. 50 Economy ticket for £23 per person are available. Travel duration is 7h 5m
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FlixBus7h 20m017:00SouthamptonCoach Station00:20CardiffKingsway Coach Stop0EconomyA Bus from FlixBus goes from Coach Station, Southampton (United Kingdom) at 20/12/2025 17:00:00 to Kingsway Coach Stop, Cardiff (United Kingdom) arriving at 21/12/2025 00:20:00. 50 Economy ticket for £23 per person are available. Travel duration is 7h 20m
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FlixBus7h 45m010:50SouthamptonCoach Station18:35CardiffKingsway Coach Stop0EconomyA Bus from FlixBus goes from Coach Station, Southampton (United Kingdom) at 20/12/2025 10:50:00 to Kingsway Coach Stop, Cardiff (United Kingdom) arriving at 20/12/2025 18:35:00. 50 Economy ticket for £26 per person are available. Travel duration is 7h 45m
Fastest Buses Saturday
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Great Western Railway (GWR)2h 45m009:57SouthamptonCentral Station12:42CardiffCentral Station0EconomyA Train from Great Western Railway (GWR) goes from Central Station, Southampton (United Kingdom) at 21/12/2025 09:57:00 to Central Station, Cardiff (United Kingdom) arriving at 21/12/2025 12:42:00. 50 Economy ticket for £61 per person are available. Travel duration is 2h 45m
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South Western Railway3h 2m008:26SouthamptonCentral Station11:28CardiffCentral Station0EconomyA Train from South Western Railway goes from Central Station, Southampton (United Kingdom) at 21/12/2025 08:26:00 to Central Station, Cardiff (United Kingdom) arriving at 21/12/2025 11:28:00. 50 Economy ticket for £110 per person are available. Travel duration is 3h 2m
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CrossCountry3h 18m009:15SouthamptonCentral Station12:33CardiffCentral Station0EconomyA Train from CrossCountry goes from Central Station, Southampton (United Kingdom) at 21/12/2025 09:15:00 to Central Station, Cardiff (United Kingdom) arriving at 21/12/2025 12:33:00. 50 Economy ticket for £110 per person are available. Travel duration is 3h 18m
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CrossCountry3h 19m010:15SouthamptonCentral Station13:34CardiffCentral Station0EconomyA Train from CrossCountry goes from Central Station, Southampton (United Kingdom) at 21/12/2025 10:15:00 to Central Station, Cardiff (United Kingdom) arriving at 21/12/2025 13:34:00. 50 Economy ticket for £110 per person are available. Travel duration is 3h 19m
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South Western Railway3h 34m006:55SouthamptonCentral Station10:29CardiffCentral Station0EconomyA Train from South Western Railway goes from Central Station, Southampton (United Kingdom) at 21/12/2025 06:55:00 to Central Station, Cardiff (United Kingdom) arriving at 21/12/2025 10:29:00. 50 Economy ticket for £110 per person are available. Travel duration is 3h 34m
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National Express5h 50m014:45SouthamptonCoach Station20:35CardiffCoach Station0EconomyA Bus from National Express goes from Coach Station, Southampton (United Kingdom) at 21/12/2025 14:45:00 to Coach Station, Cardiff (United Kingdom) arriving at 21/12/2025 20:35:00. 50 Economy ticket for £52 per person are available. Travel duration is 5h 50m
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National Express6h 10m012:15SouthamptonCoach Station18:25CardiffCoach Station0EconomyA Bus from National Express goes from Coach Station, Southampton (United Kingdom) at 21/12/2025 12:15:00 to Coach Station, Cardiff (United Kingdom) arriving at 21/12/2025 18:25:00. 50 Economy ticket for £52 per person are available. Travel duration is 6h 10m
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FlixBus7h 5m017:15Southampton00:20CardiffKingsway Coach Stop0EconomyA Bus from FlixBus goes from , Southampton (United Kingdom) at 21/12/2025 17:15:00 to Kingsway Coach Stop, Cardiff (United Kingdom) arriving at 22/12/2025 00:20:00. 50 Economy ticket for £20 per person are available. Travel duration is 7h 5m
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FlixBus7h 5m009:30Southampton16:35CardiffKingsway Coach Stop0EconomyA Bus from FlixBus goes from , Southampton (United Kingdom) at 21/12/2025 09:30:00 to Kingsway Coach Stop, Cardiff (United Kingdom) arriving at 21/12/2025 16:35:00. 50 Economy ticket for £29 per person are available. Travel duration is 7h 5m
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FlixBus7h 25m011:10Southampton18:35CardiffKingsway Coach Stop0EconomyA Bus from FlixBus goes from , Southampton (United Kingdom) at 21/12/2025 11:10:00 to Kingsway Coach Stop, Cardiff (United Kingdom) arriving at 21/12/2025 18:35:00. 50 Economy ticket for £23 per person are available. Travel duration is 7h 25m
Fastest Trains Sunday
Fastest Buses Sunday
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National Express6h 0m006:25SouthamptonCoach Station12:25CardiffCoach Station0EconomyA Bus from National Express goes from Coach Station, Southampton (United Kingdom) at 22/12/2025 06:25:00 to Coach Station, Cardiff (United Kingdom) arriving at 22/12/2025 12:25:00. 50 Economy ticket for £60 per person are available. Travel duration is 6h 0m
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National Express6h 45m004:15SouthamptonCoach Station11:00CardiffCoach Station0EconomyA Bus from National Express goes from Coach Station, Southampton (United Kingdom) at 22/12/2025 04:15:00 to Coach Station, Cardiff (United Kingdom) arriving at 22/12/2025 11:00:00. 50 Economy ticket for £60 per person are available. Travel duration is 6h 45m
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FlixBus7h 5m017:15SouthamptonUniversity00:20CardiffKingsway Coach Stop0EconomyA Bus from FlixBus goes from University, Southampton (United Kingdom) at 22/12/2025 17:15:00 to Kingsway Coach Stop, Cardiff (United Kingdom) arriving at 23/12/2025 00:20:00. 50 Economy ticket for £24 per person are available. Travel duration is 7h 5m
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FlixBus7h 20m017:00SouthamptonCoach Station00:20CardiffKingsway Coach Stop0EconomyA Bus from FlixBus goes from Coach Station, Southampton (United Kingdom) at 22/12/2025 17:00:00 to Kingsway Coach Stop, Cardiff (United Kingdom) arriving at 23/12/2025 00:20:00. 50 Economy ticket for £24 per person are available. Travel duration is 7h 20m
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FlixBus7h 45m010:50SouthamptonCoach Station18:35CardiffKingsway Coach Stop0EconomyA Bus from FlixBus goes from Coach Station, Southampton (United Kingdom) at 22/12/2025 10:50:00 to Kingsway Coach Stop, Cardiff (United Kingdom) arriving at 22/12/2025 18:35:00. 50 Economy ticket for £30 per person are available. Travel duration is 7h 45m
Fastest Buses Monday
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National Express6h 0m015:00SouthamptonCoach Station21:00CardiffCoach Station0EconomyA Bus from National Express goes from Coach Station, Southampton (United Kingdom) at 23/12/2025 15:00:00 to Coach Station, Cardiff (United Kingdom) arriving at 23/12/2025 21:00:00. 50 Economy ticket for £50 per person are available. Travel duration is 6h 0m
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National Express6h 10m016:30SouthamptonCoach Station22:40CardiffCoach Station0EconomyA Bus from National Express goes from Coach Station, Southampton (United Kingdom) at 23/12/2025 16:30:00 to Coach Station, Cardiff (United Kingdom) arriving at 23/12/2025 22:40:00. 50 Economy ticket for £50 per person are available. Travel duration is 6h 10m
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FlixBus7h 0m007:15SouthamptonCoach Station14:15CardiffKingsway Coach Stop0EconomyA Bus from FlixBus goes from Coach Station, Southampton (United Kingdom) at 23/12/2025 07:15:00 to Kingsway Coach Stop, Cardiff (United Kingdom) arriving at 23/12/2025 14:15:00. 50 Economy ticket for £28 per person are available. Travel duration is 7h 0m
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FlixBus7h 5m017:15SouthamptonUniversity00:20CardiffKingsway Coach Stop0EconomyA Bus from FlixBus goes from University, Southampton (United Kingdom) at 23/12/2025 17:15:00 to Kingsway Coach Stop, Cardiff (United Kingdom) arriving at 24/12/2025 00:20:00. 50 Economy ticket for £25 per person are available. Travel duration is 7h 5m
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FlixBus7h 20m017:00SouthamptonCoach Station00:20CardiffKingsway Coach Stop0EconomyA Bus from FlixBus goes from Coach Station, Southampton (United Kingdom) at 23/12/2025 17:00:00 to Kingsway Coach Stop, Cardiff (United Kingdom) arriving at 24/12/2025 00:20:00. 50 Economy ticket for £25 per person are available. Travel duration is 7h 20m
Fastest Buses Tuesday
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National Express6h 0m015:00SouthamptonCoach Station21:00CardiffCoach Station0EconomyA Bus from National Express goes from Coach Station, Southampton (United Kingdom) at 24/12/2025 15:00:00 to Coach Station, Cardiff (United Kingdom) arriving at 24/12/2025 21:00:00. 50 Economy ticket for £60 per person are available. Travel duration is 6h 0m
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National Express6h 25m012:15SouthamptonCoach Station18:40CardiffCoach Station0EconomyA Bus from National Express goes from Coach Station, Southampton (United Kingdom) at 24/12/2025 12:15:00 to Coach Station, Cardiff (United Kingdom) arriving at 24/12/2025 18:40:00. 50 Economy ticket for £60 per person are available. Travel duration is 6h 25m
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FlixBus7h 0m007:15SouthamptonCoach Station14:15CardiffKingsway Coach Stop0EconomyA Bus from FlixBus goes from Coach Station, Southampton (United Kingdom) at 24/12/2025 07:15:00 to Kingsway Coach Stop, Cardiff (United Kingdom) arriving at 24/12/2025 14:15:00. 50 Economy ticket for £30 per person are available. Travel duration is 7h 0m
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FlixBus7h 5m009:30SouthamptonUniversity16:35CardiffKingsway Coach Stop0EconomyA Bus from FlixBus goes from University, Southampton (United Kingdom) at 24/12/2025 09:30:00 to Kingsway Coach Stop, Cardiff (United Kingdom) arriving at 24/12/2025 16:35:00. 50 Economy ticket for £29 per person are available. Travel duration is 7h 5m
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FlixBus7h 20m009:15SouthamptonCoach Station16:35CardiffKingsway Coach Stop0EconomyA Bus from FlixBus goes from Coach Station, Southampton (United Kingdom) at 24/12/2025 09:15:00 to Kingsway Coach Stop, Cardiff (United Kingdom) arriving at 24/12/2025 16:35:00. 50 Economy ticket for £30 per person are available. Travel duration is 7h 20m
Fastest Buses Wednesday
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National Express6h 20m006:25SouthamptonCoach Station12:45CardiffCoach Station0EconomyA Bus from National Express goes from Coach Station, Southampton (United Kingdom) at 25/12/2025 06:25:00 to Coach Station, Cardiff (United Kingdom) arriving at 25/12/2025 12:45:00. 50 Economy ticket for £119 per person are available. Travel duration is 6h 20m
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National Express6h 20m010:25SouthamptonCoach Station16:45CardiffCoach Station0EconomyA Bus from National Express goes from Coach Station, Southampton (United Kingdom) at 25/12/2025 10:25:00 to Coach Station, Cardiff (United Kingdom) arriving at 25/12/2025 16:45:00. 50 Economy ticket for £119 per person are available. Travel duration is 6h 20m
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National Express7h 20m014:25SouthamptonCoach Station21:45CardiffCoach Station0EconomyA Bus from National Express goes from Coach Station, Southampton (United Kingdom) at 25/12/2025 14:25:00 to Coach Station, Cardiff (United Kingdom) arriving at 25/12/2025 21:45:00. 50 Economy ticket for £119 per person are available. Travel duration is 7h 20m
Fastest Buses Thursday
Here you will find all operators and timetables for a
Bus from Southampton to Cardiff
What are the most popular stations in Southampton and Cardiff?
In Southampton, you will usually depart from Central Station, Coach Station or Swanwick Train Station, while in Cardiff you will be arriving at Central Station, Dingle Road Train Station or Penarth Train Station, 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 Cardiff from Southampton? With 5 connections between 5 Bus and Train 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 Southampton and Cardiff, you can pay as low as £20 with a Bus from FlixBus.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 Train from Great Western Railway (GWR): you will get to Cardiff in just 2h 45m.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 Southampton and Cardiff are FlixBus, National Express and South Western Railway, 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 Southampton and Cardiff 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 Netley or to Newlyn, and look at flights from Bournemouth Airport, and landing at Cardiff 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 Southampton to Cardiff?
The most popular companies between Southampton and Cardiff, are FlixBus, National Express and South Western Railway. Be sure to check their seat class offers and the amenities that they provide.
Bus companies: FlixBus and National Express
Train companies: South Western Railway, CrossCountry and Great Western Railway (GWR)
All you need to know when you travel from Southampton to Cardiff
Check all information on comfort and services on all modes of transports from Southampton to Cardiff. See which seat classes are available, and what amenities are other advantages offered by the operators on your journey.
FAQs about the trip from Southampton to Cardiff
How can I reach Cardiff from Southampton?
Every day, there are on average 5 connections between Bus and Train, with which you can get to Cardiff from Southampton.
How far is Cardiff from Southampton?
The distance between Southampton and Cardiff is 139.1 km.
What is the most ecofriendly mode of transport between Southampton and Cardiff?
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 4 kgs of CO2, a train 5 kgs, a car 24 kgs, and a flight 34 kgs.
What is the cheapest mode of transport from Southampton to Cardiff?
You can get to Cardiff with just £20 by taking a Bus from FlixBus.
What is the fastest way to get from Southampton to Cardiff?
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 Cardiff in just 2h 45m with a Train from Great Western Railway (GWR).
More routes to Southampton and to Cardiff
Looking for more options? Here you can see the most popular routes to Southampton and to Cardiff. Simply click on a connection, and you’ll find all the details about the route!
- Trips to Southampton
- Aberdeen to Southampton
- Birmingham to Southampton
- Bournemouth to Southampton
- Brighton to Southampton
- Bristol to Southampton
- Cardiff to Southampton
- Coventry to Southampton
- Dundee to Southampton
- Edinburgh to Southampton
- Glasgow to Southampton
- Leeds to Southampton
- London Gatwick Airport to Southampton
- London Heathrow Airport to Southampton
- London to Southampton
- Manchester to Southampton
- Newcastle upon Tyne to Southampton
- Oxford to Southampton
- Poole to Southampton
- Sheffield to Southampton
- Trips to Cardiff
- Bath to Cardiff
- Birmingham to Cardiff
- Bridgwater to Cardiff
- Brighton to Cardiff
- Bristol Airport to Cardiff
- Bristol to Cardiff
- Cambridge to Cardiff
- Edinburgh to Cardiff
- Glasgow to Cardiff
- Hull to Cardiff
- Liverpool to Cardiff
- London Heathrow Airport to Cardiff
- London to Cardiff
- Manchester to Cardiff
- Middlesbrough to Cardiff
- Newcastle upon Tyne to Cardiff
- Paris to Cardiff
- Portsmouth to Cardiff
- Reading to Cardiff
- Sunderland to Cardiff
- Swansea to Cardiff
