What is the best way to travel from Cardiff to Southampton?
Looking for a trip? Check and compare all the available Trains and Buses to Southampton from Cardiff. Look at different modes of transportation, search for the cheapest tickets, fastest rides and most popular stations, and see all 3 available companies to find your perfect trip!
What is the cheapest way to reach Southampton from Cardiff?
You can reach Southampton with just £11 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.
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FlixBus6h 25m006:45CardiffKingsway Coach Stop13:10SouthamptonUniversity0EconomyA Bus from FlixBus goes from Kingsway Coach Stop, Cardiff (United Kingdom) at 12/06/2026 06:45:00 to University, Southampton (United Kingdom) arriving at 12/06/2026 13:10:00. 50 Economy ticket for £23 per person are available. Travel duration is 6h 25m
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FlixBus6h 5m011:45CardiffKingsway Coach Stop17:50SouthamptonUniversity0EconomyA Bus from FlixBus goes from Kingsway Coach Stop, Cardiff (United Kingdom) at 12/06/2026 11:45:00 to University, Southampton (United Kingdom) arriving at 12/06/2026 17:50:00. 50 Economy ticket for £23 per person are available. Travel duration is 6h 5m
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FlixBus6h 45m006:45CardiffKingsway Coach Stop13:30SouthamptonCoach Station0EconomyA Bus from FlixBus goes from Kingsway Coach Stop, Cardiff (United Kingdom) at 12/06/2026 06:45:00 to Coach Station, Southampton (United Kingdom) arriving at 12/06/2026 13:30:00. 50 Economy ticket for £23 per person are available. Travel duration is 6h 45m
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National Express7h 15m019:45CardiffCoach Station03:00SouthamptonCoach Station0EconomyA Bus from National Express goes from Coach Station, Cardiff (United Kingdom) at 12/06/2026 19:45:00 to Coach Station, Southampton (United Kingdom) arriving at 13/06/2026 03:00:00. 50 Economy ticket for £27 per person are available. Travel duration is 7h 15m
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National Express7h 20m016:45CardiffCoach Station00:05SouthamptonCoach Station0EconomyA Bus from National Express goes from Coach Station, Cardiff (United Kingdom) at 12/06/2026 16:45:00 to Coach Station, Southampton (United Kingdom) arriving at 13/06/2026 00:05:00. 50 Economy ticket for £32 per person are available. Travel duration is 7h 20m
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Great Western Railway (GWR)2h 32m015:30CardiffCentral Station18:02SouthamptonCentral Station0EconomyA Train from Great Western Railway (GWR) goes from Central Station, Cardiff (United Kingdom) at 12/06/2026 15:30:00 to Central Station, Southampton (United Kingdom) arriving at 12/06/2026 18:02:00. 50 Economy ticket for £61 per person are available. Travel duration is 2h 32m
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Great Western Railway (GWR)2h 36m016:27CardiffCentral Station19:03SouthamptonCentral Station0EconomyA Train from Great Western Railway (GWR) goes from Central Station, Cardiff (United Kingdom) at 12/06/2026 16:27:00 to Central Station, Southampton (United Kingdom) arriving at 12/06/2026 19:03:00. 50 Economy ticket for £61 per person are available. Travel duration is 2h 36m
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Great Western Railway (GWR)2h 37m017:27CardiffCentral Station20:04SouthamptonCentral Station0EconomyA Train from Great Western Railway (GWR) goes from Central Station, Cardiff (United Kingdom) at 12/06/2026 17:27:00 to Central Station, Southampton (United Kingdom) arriving at 12/06/2026 20:04:00. 50 Economy ticket for £61 per person are available. Travel duration is 2h 37m
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Great Western Railway (GWR)3h 19m005:07CardiffCentral Station08:26SouthamptonCentral Station0EconomyA Train from Great Western Railway (GWR) goes from Central Station, Cardiff (United Kingdom) at 12/06/2026 05:07:00 to Central Station, Southampton (United Kingdom) arriving at 12/06/2026 08:26:00. 50 Economy ticket for £111 per person are available. Travel duration is 3h 19m
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Great Western Railway (GWR)2h 25m015:18CardiffCentral Station17:43SouthamptonCentral Station0EconomyA Train from Great Western Railway (GWR) goes from Central Station, Cardiff (United Kingdom) at 12/06/2026 15:18:00 to Central Station, Southampton (United Kingdom) arriving at 12/06/2026 17:43:00. 50 Economy ticket for £111 per person are available. Travel duration is 2h 25m
Cheapest Buses Friday
Cheapest Trains Friday
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FlixBus6h 5m011:45CardiffKingsway Coach Stop17:50SouthamptonUniversity0EconomyA Bus from FlixBus goes from Kingsway Coach Stop, Cardiff (United Kingdom) at 13/06/2026 11:45:00 to University, Southampton (United Kingdom) arriving at 13/06/2026 17:50:00. 50 Economy ticket for £23 per person are available. Travel duration is 6h 5m
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FlixBus6h 25m011:45CardiffKingsway Coach Stop18:10SouthamptonCoach Station0EconomyA Bus from FlixBus goes from Kingsway Coach Stop, Cardiff (United Kingdom) at 13/06/2026 11:45:00 to Coach Station, Southampton (United Kingdom) arriving at 13/06/2026 18:10:00. 50 Economy ticket for £23 per person are available. Travel duration is 6h 25m
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FlixBus6h 45m016:40CardiffKingsway Coach Stop23:25SouthamptonUniversity0EconomyA Bus from FlixBus goes from Kingsway Coach Stop, Cardiff (United Kingdom) at 13/06/2026 16:40:00 to University, Southampton (United Kingdom) arriving at 13/06/2026 23:25:00. 50 Economy ticket for £25 per person are available. Travel duration is 6h 45m
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National Express7h 20m016:45CardiffCoach Station00:05SouthamptonCoach Station0EconomyA Bus from National Express goes from Coach Station, Cardiff (United Kingdom) at 13/06/2026 16:45:00 to Coach Station, Southampton (United Kingdom) arriving at 14/06/2026 00:05:00. 50 Economy ticket for £27 per person are available. Travel duration is 7h 20m
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National Express6h 45m018:45CardiffCoach Station01:30SouthamptonCoach Station0EconomyA Bus from National Express goes from Coach Station, Cardiff (United Kingdom) at 13/06/2026 18:45:00 to Coach Station, Southampton (United Kingdom) arriving at 14/06/2026 01:30:00. 50 Economy ticket for £27 per person are available. Travel duration is 6h 45m
Cheapest Buses Saturday
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FlixBus5h 25m007:45CardiffKingsway Coach Stop13:10SouthamptonUniversity0EconomyA Bus from FlixBus goes from Kingsway Coach Stop, Cardiff (United Kingdom) at 14/06/2026 07:45:00 to University, Southampton (United Kingdom) arriving at 14/06/2026 13:10:00. 50 Economy ticket for £23 per person are available. Travel duration is 5h 25m
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FlixBus6h 50m014:50CardiffKingsway Coach Stop21:40SouthamptonUniversity0EconomyA Bus from FlixBus goes from Kingsway Coach Stop, Cardiff (United Kingdom) at 14/06/2026 14:50:00 to University, Southampton (United Kingdom) arriving at 14/06/2026 21:40:00. 50 Economy ticket for £23 per person are available. Travel duration is 6h 50m
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FlixBus5h 45m007:45CardiffKingsway Coach Stop13:30SouthamptonCoach Station0EconomyA Bus from FlixBus goes from Kingsway Coach Stop, Cardiff (United Kingdom) at 14/06/2026 07:45:00 to Coach Station, Southampton (United Kingdom) arriving at 14/06/2026 13:30:00. 50 Economy ticket for £23 per person are available. Travel duration is 5h 45m
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National Express7h 20m016:45CardiffCoach Station00:05SouthamptonCoach Station0EconomyA Bus from National Express goes from Coach Station, Cardiff (United Kingdom) at 14/06/2026 16:45:00 to Coach Station, Southampton (United Kingdom) arriving at 15/06/2026 00:05:00. 50 Economy ticket for £32 per person are available. Travel duration is 7h 20m
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National Express7h 42m019:03Bristol AirportBristol Airport02:45SouthamptonUniversity0EconomyA Bus from National Express goes from Bristol Airport, Bristol Airport (United Kingdom) at 14/06/2026 19:03:00 to University, Southampton (United Kingdom) arriving at 15/06/2026 02:45:00. 50 Economy ticket for £33 per person are available. Travel duration is 7h 42m
Cheapest Buses Sunday
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National Express7h 20m016:45CardiffCoach Station00:05SouthamptonCoach Station0EconomyA Bus from National Express goes from Coach Station, Cardiff (United Kingdom) at 15/06/2026 16:45:00 to Coach Station, Southampton (United Kingdom) arriving at 16/06/2026 00:05:00. 50 Economy ticket for £17 per person are available. Travel duration is 7h 20m
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National Express6h 45m018:45CardiffCoach Station01:30SouthamptonCoach Station0EconomyA Bus from National Express goes from Coach Station, Cardiff (United Kingdom) at 15/06/2026 18:45:00 to Coach Station, Southampton (United Kingdom) arriving at 16/06/2026 01:30:00. 50 Economy ticket for £17 per person are available. Travel duration is 6h 45m
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FlixBus6h 25m006:45CardiffKingsway Coach Stop13:10SouthamptonUniversity0EconomyA Bus from FlixBus goes from Kingsway Coach Stop, Cardiff (United Kingdom) at 15/06/2026 06:45:00 to University, Southampton (United Kingdom) arriving at 15/06/2026 13:10:00. 50 Economy ticket for £18 per person are available. Travel duration is 6h 25m
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FlixBus6h 5m011:45CardiffKingsway Coach Stop17:50SouthamptonUniversity0EconomyA Bus from FlixBus goes from Kingsway Coach Stop, Cardiff (United Kingdom) at 15/06/2026 11:45:00 to University, Southampton (United Kingdom) arriving at 15/06/2026 17:50:00. 50 Economy ticket for £18 per person are available. Travel duration is 6h 5m
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FlixBus6h 50m014:50CardiffKingsway Coach Stop21:40SouthamptonUniversity0EconomyA Bus from FlixBus goes from Kingsway Coach Stop, Cardiff (United Kingdom) at 15/06/2026 14:50:00 to University, Southampton (United Kingdom) arriving at 15/06/2026 21:40:00. 50 Economy ticket for £18 per person are available. Travel duration is 6h 50m
Cheapest Buses Monday
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National Express7h 0m018:00CardiffCoach Station01:00SouthamptonCoach Station0EconomyA Bus from National Express goes from Coach Station, Cardiff (United Kingdom) at 16/06/2026 18:00:00 to Coach Station, Southampton (United Kingdom) arriving at 17/06/2026 01:00:00. 50 Economy ticket for £17 per person are available. Travel duration is 7h 0m
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FlixBus6h 20m004:40CardiffKingsway Coach Stop11:00SouthamptonUniversity0EconomyA Bus from FlixBus goes from Kingsway Coach Stop, Cardiff (United Kingdom) at 16/06/2026 04:40:00 to University, Southampton (United Kingdom) arriving at 16/06/2026 11:00:00. 50 Economy ticket for £19 per person are available. Travel duration is 6h 20m
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FlixBus6h 5m011:45CardiffKingsway Coach Stop17:50SouthamptonUniversity0EconomyA Bus from FlixBus goes from Kingsway Coach Stop, Cardiff (United Kingdom) at 16/06/2026 11:45:00 to University, Southampton (United Kingdom) arriving at 16/06/2026 17:50:00. 50 Economy ticket for £19 per person are available. Travel duration is 6h 5m
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FlixBus6h 45m016:40CardiffKingsway Coach Stop23:25SouthamptonUniversity0EconomyA Bus from FlixBus goes from Kingsway Coach Stop, Cardiff (United Kingdom) at 16/06/2026 16:40:00 to University, Southampton (United Kingdom) arriving at 16/06/2026 23:25:00. 50 Economy ticket for £19 per person are available. Travel duration is 6h 45m
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National Express7h 47m019:13Bristol AirportBristol Airport03:00SouthamptonCoach Station0EconomyA Bus from National Express goes from Bristol Airport, Bristol Airport (United Kingdom) at 16/06/2026 19:13:00 to Coach Station, Southampton (United Kingdom) arriving at 17/06/2026 03:00:00. 50 Economy ticket for £20 per person are available. Travel duration is 7h 47m
Cheapest Buses Tuesday
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National Express7h 45m019:15CardiffCoach Station03:00SouthamptonCoach Station0EconomyA Bus from National Express goes from Coach Station, Cardiff (United Kingdom) at 17/06/2026 19:15:00 to Coach Station, Southampton (United Kingdom) arriving at 18/06/2026 03:00:00. 50 Economy ticket for £11 per person are available. Travel duration is 7h 45m
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FlixBus6h 40m004:40CardiffKingsway Coach Stop11:20SouthamptonCoach Station0EconomyA Bus from FlixBus goes from Kingsway Coach Stop, Cardiff (United Kingdom) at 17/06/2026 04:40:00 to Coach Station, Southampton (United Kingdom) arriving at 17/06/2026 11:20:00. 50 Economy ticket for £14 per person are available. Travel duration is 6h 40m
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FlixBus6h 45m006:45CardiffKingsway Coach Stop13:30SouthamptonCoach Station0EconomyA Bus from FlixBus goes from Kingsway Coach Stop, Cardiff (United Kingdom) at 17/06/2026 06:45:00 to Coach Station, Southampton (United Kingdom) arriving at 17/06/2026 13:30:00. 50 Economy ticket for £14 per person are available. Travel duration is 6h 45m
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FlixBus7h 10m014:50CardiffKingsway Coach Stop22:00SouthamptonCoach Station0EconomyA Bus from FlixBus goes from Kingsway Coach Stop, Cardiff (United Kingdom) at 17/06/2026 14:50:00 to Coach Station, Southampton (United Kingdom) arriving at 17/06/2026 22:00:00. 50 Economy ticket for £14 per person are available. Travel duration is 7h 10m
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National Express7h 0m018:00CardiffCoach Station01:00SouthamptonCoach Station0EconomyA Bus from National Express goes from Coach Station, Cardiff (United Kingdom) at 17/06/2026 18:00:00 to Coach Station, Southampton (United Kingdom) arriving at 18/06/2026 01:00:00. 50 Economy ticket for £15 per person are available. Travel duration is 7h 0m
Cheapest Buses Wednesday
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National Express7h 0m018:00CardiffCoach Station01:00SouthamptonCoach Station0EconomyA Bus from National Express goes from Coach Station, Cardiff (United Kingdom) at 18/06/2026 18:00:00 to Coach Station, Southampton (United Kingdom) arriving at 19/06/2026 01:00:00. 50 Economy ticket for £17 per person are available. Travel duration is 7h 0m
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FlixBus6h 5m011:45CardiffKingsway Coach Stop17:50SouthamptonUniversity0EconomyA Bus from FlixBus goes from Kingsway Coach Stop, Cardiff (United Kingdom) at 18/06/2026 11:45:00 to University, Southampton (United Kingdom) arriving at 18/06/2026 17:50:00. 50 Economy ticket for £20 per person are available. Travel duration is 6h 5m
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FlixBus6h 45m016:40CardiffKingsway Coach Stop23:25SouthamptonUniversity0EconomyA Bus from FlixBus goes from Kingsway Coach Stop, Cardiff (United Kingdom) at 18/06/2026 16:40:00 to University, Southampton (United Kingdom) arriving at 18/06/2026 23:25:00. 50 Economy ticket for £20 per person are available. Travel duration is 6h 45m
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FlixBus6h 25m011:45CardiffKingsway Coach Stop18:10SouthamptonCoach Station0EconomyA Bus from FlixBus goes from Kingsway Coach Stop, Cardiff (United Kingdom) at 18/06/2026 11:45:00 to Coach Station, Southampton (United Kingdom) arriving at 18/06/2026 18:10:00. 50 Economy ticket for £20 per person are available. Travel duration is 6h 25m
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National Express7h 45m019:15CardiffCoach Station03:00SouthamptonCoach Station0EconomyA Bus from National Express goes from Coach Station, Cardiff (United Kingdom) at 18/06/2026 19:15:00 to Coach Station, Southampton (United Kingdom) arriving at 19/06/2026 03:00:00. 50 Economy ticket for £25 per person are available. Travel duration is 7h 45m
Cheapest Buses Thursday
What are the fastest trips from Cardiff to Southampton?
You can get to Southampton from Cardiff in just 2h 25m 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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Great Western Railway (GWR)2h 25m015:18CardiffCentral Station17:43SouthamptonCentral Station0EconomyA Train from Great Western Railway (GWR) goes from Central Station, Cardiff (United Kingdom) at 12/06/2026 15:18:00 to Central Station, Southampton (United Kingdom) arriving at 12/06/2026 17:43:00. 50 Economy ticket for £111 per person are available. Travel duration is 2h 25m
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Great Western Railway (GWR)2h 32m015:30CardiffCentral Station18:02SouthamptonCentral Station0EconomyA Train from Great Western Railway (GWR) goes from Central Station, Cardiff (United Kingdom) at 12/06/2026 15:30:00 to Central Station, Southampton (United Kingdom) arriving at 12/06/2026 18:02:00. 50 Economy ticket for £61 per person are available. Travel duration is 2h 32m
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Great Western Railway (GWR)2h 36m016:27CardiffCentral Station19:03SouthamptonCentral Station0EconomyA Train from Great Western Railway (GWR) goes from Central Station, Cardiff (United Kingdom) at 12/06/2026 16:27:00 to Central Station, Southampton (United Kingdom) arriving at 12/06/2026 19:03:00. 50 Economy ticket for £61 per person are available. Travel duration is 2h 36m
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Great Western Railway (GWR)2h 37m017:27CardiffCentral Station20:04SouthamptonCentral Station0EconomyA Train from Great Western Railway (GWR) goes from Central Station, Cardiff (United Kingdom) at 12/06/2026 17:27:00 to Central Station, Southampton (United Kingdom) arriving at 12/06/2026 20:04:00. 50 Economy ticket for £61 per person are available. Travel duration is 2h 37m
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Great Western Railway (GWR)3h 19m005:07CardiffCentral Station08:26SouthamptonCentral Station0EconomyA Train from Great Western Railway (GWR) goes from Central Station, Cardiff (United Kingdom) at 12/06/2026 05:07:00 to Central Station, Southampton (United Kingdom) arriving at 12/06/2026 08:26:00. 50 Economy ticket for £111 per person are available. Travel duration is 3h 19m
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FlixBus6h 5m011:45CardiffKingsway Coach Stop17:50SouthamptonUniversity0EconomyA Bus from FlixBus goes from Kingsway Coach Stop, Cardiff (United Kingdom) at 12/06/2026 11:45:00 to University, Southampton (United Kingdom) arriving at 12/06/2026 17:50:00. 50 Economy ticket for £23 per person are available. Travel duration is 6h 5m
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FlixBus6h 25m006:45CardiffKingsway Coach Stop13:10SouthamptonUniversity0EconomyA Bus from FlixBus goes from Kingsway Coach Stop, Cardiff (United Kingdom) at 12/06/2026 06:45:00 to University, Southampton (United Kingdom) arriving at 12/06/2026 13:10:00. 50 Economy ticket for £23 per person are available. Travel duration is 6h 25m
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FlixBus6h 45m006:45CardiffKingsway Coach Stop13:30SouthamptonCoach Station0EconomyA Bus from FlixBus goes from Kingsway Coach Stop, Cardiff (United Kingdom) at 12/06/2026 06:45:00 to Coach Station, Southampton (United Kingdom) arriving at 12/06/2026 13:30:00. 50 Economy ticket for £23 per person are available. Travel duration is 6h 45m
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National Express7h 15m019:45CardiffCoach Station03:00SouthamptonCoach Station0EconomyA Bus from National Express goes from Coach Station, Cardiff (United Kingdom) at 12/06/2026 19:45:00 to Coach Station, Southampton (United Kingdom) arriving at 13/06/2026 03:00:00. 50 Economy ticket for £27 per person are available. Travel duration is 7h 15m
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National Express7h 20m016:45CardiffCoach Station00:05SouthamptonCoach Station0EconomyA Bus from National Express goes from Coach Station, Cardiff (United Kingdom) at 12/06/2026 16:45:00 to Coach Station, Southampton (United Kingdom) arriving at 13/06/2026 00:05:00. 50 Economy ticket for £32 per person are available. Travel duration is 7h 20m
Fastest Trains Friday
Fastest Buses Friday
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FlixBus6h 5m011:45CardiffKingsway Coach Stop17:50SouthamptonUniversity0EconomyA Bus from FlixBus goes from Kingsway Coach Stop, Cardiff (United Kingdom) at 13/06/2026 11:45:00 to University, Southampton (United Kingdom) arriving at 13/06/2026 17:50:00. 50 Economy ticket for £23 per person are available. Travel duration is 6h 5m
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FlixBus6h 25m011:45CardiffKingsway Coach Stop18:10SouthamptonCoach Station0EconomyA Bus from FlixBus goes from Kingsway Coach Stop, Cardiff (United Kingdom) at 13/06/2026 11:45:00 to Coach Station, Southampton (United Kingdom) arriving at 13/06/2026 18:10:00. 50 Economy ticket for £23 per person are available. Travel duration is 6h 25m
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FlixBus6h 45m016:40CardiffKingsway Coach Stop23:25SouthamptonUniversity0EconomyA Bus from FlixBus goes from Kingsway Coach Stop, Cardiff (United Kingdom) at 13/06/2026 16:40:00 to University, Southampton (United Kingdom) arriving at 13/06/2026 23:25:00. 50 Economy ticket for £25 per person are available. Travel duration is 6h 45m
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National Express6h 45m018:45CardiffCoach Station01:30SouthamptonCoach Station0EconomyA Bus from National Express goes from Coach Station, Cardiff (United Kingdom) at 13/06/2026 18:45:00 to Coach Station, Southampton (United Kingdom) arriving at 14/06/2026 01:30:00. 50 Economy ticket for £27 per person are available. Travel duration is 6h 45m
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National Express7h 20m016:45CardiffCoach Station00:05SouthamptonCoach Station0EconomyA Bus from National Express goes from Coach Station, Cardiff (United Kingdom) at 13/06/2026 16:45:00 to Coach Station, Southampton (United Kingdom) arriving at 14/06/2026 00:05:00. 50 Economy ticket for £27 per person are available. Travel duration is 7h 20m
Fastest Buses Saturday
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FlixBus5h 25m007:45CardiffKingsway Coach Stop13:10SouthamptonUniversity0EconomyA Bus from FlixBus goes from Kingsway Coach Stop, Cardiff (United Kingdom) at 14/06/2026 07:45:00 to University, Southampton (United Kingdom) arriving at 14/06/2026 13:10:00. 50 Economy ticket for £23 per person are available. Travel duration is 5h 25m
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FlixBus5h 45m007:45CardiffKingsway Coach Stop13:30SouthamptonCoach Station0EconomyA Bus from FlixBus goes from Kingsway Coach Stop, Cardiff (United Kingdom) at 14/06/2026 07:45:00 to Coach Station, Southampton (United Kingdom) arriving at 14/06/2026 13:30:00. 50 Economy ticket for £23 per person are available. Travel duration is 5h 45m
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FlixBus6h 50m014:50CardiffKingsway Coach Stop21:40SouthamptonUniversity0EconomyA Bus from FlixBus goes from Kingsway Coach Stop, Cardiff (United Kingdom) at 14/06/2026 14:50:00 to University, Southampton (United Kingdom) arriving at 14/06/2026 21:40:00. 50 Economy ticket for £23 per person are available. Travel duration is 6h 50m
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National Express7h 20m016:45CardiffCoach Station00:05SouthamptonCoach Station0EconomyA Bus from National Express goes from Coach Station, Cardiff (United Kingdom) at 14/06/2026 16:45:00 to Coach Station, Southampton (United Kingdom) arriving at 15/06/2026 00:05:00. 50 Economy ticket for £32 per person are available. Travel duration is 7h 20m
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National Express7h 42m019:03Bristol AirportBristol Airport02:45SouthamptonUniversity0EconomyA Bus from National Express goes from Bristol Airport, Bristol Airport (United Kingdom) at 14/06/2026 19:03:00 to University, Southampton (United Kingdom) arriving at 15/06/2026 02:45:00. 50 Economy ticket for £33 per person are available. Travel duration is 7h 42m
Fastest Buses Sunday
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FlixBus6h 5m011:45CardiffKingsway Coach Stop17:50SouthamptonUniversity0EconomyA Bus from FlixBus goes from Kingsway Coach Stop, Cardiff (United Kingdom) at 15/06/2026 11:45:00 to University, Southampton (United Kingdom) arriving at 15/06/2026 17:50:00. 50 Economy ticket for £18 per person are available. Travel duration is 6h 5m
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FlixBus6h 25m006:45CardiffKingsway Coach Stop13:10SouthamptonUniversity0EconomyA Bus from FlixBus goes from Kingsway Coach Stop, Cardiff (United Kingdom) at 15/06/2026 06:45:00 to University, Southampton (United Kingdom) arriving at 15/06/2026 13:10:00. 50 Economy ticket for £18 per person are available. Travel duration is 6h 25m
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National Express6h 45m018:45CardiffCoach Station01:30SouthamptonCoach Station0EconomyA Bus from National Express goes from Coach Station, Cardiff (United Kingdom) at 15/06/2026 18:45:00 to Coach Station, Southampton (United Kingdom) arriving at 16/06/2026 01:30:00. 50 Economy ticket for £17 per person are available. Travel duration is 6h 45m
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FlixBus6h 50m014:50CardiffKingsway Coach Stop21:40SouthamptonUniversity0EconomyA Bus from FlixBus goes from Kingsway Coach Stop, Cardiff (United Kingdom) at 15/06/2026 14:50:00 to University, Southampton (United Kingdom) arriving at 15/06/2026 21:40:00. 50 Economy ticket for £18 per person are available. Travel duration is 6h 50m
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National Express7h 20m016:45CardiffCoach Station00:05SouthamptonCoach Station0EconomyA Bus from National Express goes from Coach Station, Cardiff (United Kingdom) at 15/06/2026 16:45:00 to Coach Station, Southampton (United Kingdom) arriving at 16/06/2026 00:05:00. 50 Economy ticket for £17 per person are available. Travel duration is 7h 20m
Fastest Buses Monday
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FlixBus6h 5m011:45CardiffKingsway Coach Stop17:50SouthamptonUniversity0EconomyA Bus from FlixBus goes from Kingsway Coach Stop, Cardiff (United Kingdom) at 16/06/2026 11:45:00 to University, Southampton (United Kingdom) arriving at 16/06/2026 17:50:00. 50 Economy ticket for £19 per person are available. Travel duration is 6h 5m
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FlixBus6h 20m004:40CardiffKingsway Coach Stop11:00SouthamptonUniversity0EconomyA Bus from FlixBus goes from Kingsway Coach Stop, Cardiff (United Kingdom) at 16/06/2026 04:40:00 to University, Southampton (United Kingdom) arriving at 16/06/2026 11:00:00. 50 Economy ticket for £19 per person are available. Travel duration is 6h 20m
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FlixBus6h 45m016:40CardiffKingsway Coach Stop23:25SouthamptonUniversity0EconomyA Bus from FlixBus goes from Kingsway Coach Stop, Cardiff (United Kingdom) at 16/06/2026 16:40:00 to University, Southampton (United Kingdom) arriving at 16/06/2026 23:25:00. 50 Economy ticket for £19 per person are available. Travel duration is 6h 45m
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National Express7h 0m018:00CardiffCoach Station01:00SouthamptonCoach Station0EconomyA Bus from National Express goes from Coach Station, Cardiff (United Kingdom) at 16/06/2026 18:00:00 to Coach Station, Southampton (United Kingdom) arriving at 17/06/2026 01:00:00. 50 Economy ticket for £17 per person are available. Travel duration is 7h 0m
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National Express7h 47m019:13Bristol AirportBristol Airport03:00SouthamptonCoach Station0EconomyA Bus from National Express goes from Bristol Airport, Bristol Airport (United Kingdom) at 16/06/2026 19:13:00 to Coach Station, Southampton (United Kingdom) arriving at 17/06/2026 03:00:00. 50 Economy ticket for £20 per person are available. Travel duration is 7h 47m
Fastest Buses Tuesday
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FlixBus6h 40m004:40CardiffKingsway Coach Stop11:20SouthamptonCoach Station0EconomyA Bus from FlixBus goes from Kingsway Coach Stop, Cardiff (United Kingdom) at 17/06/2026 04:40:00 to Coach Station, Southampton (United Kingdom) arriving at 17/06/2026 11:20:00. 50 Economy ticket for £14 per person are available. Travel duration is 6h 40m
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FlixBus6h 45m006:45CardiffKingsway Coach Stop13:30SouthamptonCoach Station0EconomyA Bus from FlixBus goes from Kingsway Coach Stop, Cardiff (United Kingdom) at 17/06/2026 06:45:00 to Coach Station, Southampton (United Kingdom) arriving at 17/06/2026 13:30:00. 50 Economy ticket for £14 per person are available. Travel duration is 6h 45m
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National Express7h 0m018:00CardiffCoach Station01:00SouthamptonCoach Station0EconomyA Bus from National Express goes from Coach Station, Cardiff (United Kingdom) at 17/06/2026 18:00:00 to Coach Station, Southampton (United Kingdom) arriving at 18/06/2026 01:00:00. 50 Economy ticket for £15 per person are available. Travel duration is 7h 0m
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FlixBus7h 10m014:50CardiffKingsway Coach Stop22:00SouthamptonCoach Station0EconomyA Bus from FlixBus goes from Kingsway Coach Stop, Cardiff (United Kingdom) at 17/06/2026 14:50:00 to Coach Station, Southampton (United Kingdom) arriving at 17/06/2026 22:00:00. 50 Economy ticket for £14 per person are available. Travel duration is 7h 10m
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National Express7h 45m019:15CardiffCoach Station03:00SouthamptonCoach Station0EconomyA Bus from National Express goes from Coach Station, Cardiff (United Kingdom) at 17/06/2026 19:15:00 to Coach Station, Southampton (United Kingdom) arriving at 18/06/2026 03:00:00. 50 Economy ticket for £11 per person are available. Travel duration is 7h 45m
Fastest Buses Wednesday
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FlixBus6h 5m011:45CardiffKingsway Coach Stop17:50SouthamptonUniversity0EconomyA Bus from FlixBus goes from Kingsway Coach Stop, Cardiff (United Kingdom) at 18/06/2026 11:45:00 to University, Southampton (United Kingdom) arriving at 18/06/2026 17:50:00. 50 Economy ticket for £20 per person are available. Travel duration is 6h 5m
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FlixBus6h 25m011:45CardiffKingsway Coach Stop18:10SouthamptonCoach Station0EconomyA Bus from FlixBus goes from Kingsway Coach Stop, Cardiff (United Kingdom) at 18/06/2026 11:45:00 to Coach Station, Southampton (United Kingdom) arriving at 18/06/2026 18:10:00. 50 Economy ticket for £20 per person are available. Travel duration is 6h 25m
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FlixBus6h 45m016:40CardiffKingsway Coach Stop23:25SouthamptonUniversity0EconomyA Bus from FlixBus goes from Kingsway Coach Stop, Cardiff (United Kingdom) at 18/06/2026 16:40:00 to University, Southampton (United Kingdom) arriving at 18/06/2026 23:25:00. 50 Economy ticket for £20 per person are available. Travel duration is 6h 45m
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National Express7h 0m018:00CardiffCoach Station01:00SouthamptonCoach Station0EconomyA Bus from National Express goes from Coach Station, Cardiff (United Kingdom) at 18/06/2026 18:00:00 to Coach Station, Southampton (United Kingdom) arriving at 19/06/2026 01:00:00. 50 Economy ticket for £17 per person are available. Travel duration is 7h 0m
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National Express7h 45m019:15CardiffCoach Station03:00SouthamptonCoach Station0EconomyA Bus from National Express goes from Coach Station, Cardiff (United Kingdom) at 18/06/2026 19:15:00 to Coach Station, Southampton (United Kingdom) arriving at 19/06/2026 03:00:00. 50 Economy ticket for £25 per person are available. Travel duration is 7h 45m
Fastest Buses Thursday
Here you will find all operators and timetables for a
Bus from Cardiff to Southampton
What are the most popular stations in Cardiff and Southampton?
In Cardiff, you will usually depart from Central Station, Penarth Train Station or Dingle Road Train Station, while in Southampton you will be arriving at Coach Station, Swanwick Train Station or Central 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 Southampton from Cardiff? With 5 connections between 3 Train 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 Southampton, you can pay as low as £11 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 Train from Great Western Railway (GWR): you will get to Southampton in just 2h 25m.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 Southampton are FlixBus, National Express and Great Western Railway (GWR), 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 Southampton 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 Netley, and look at flights from Cardiff Airport, and landing at Bournemouth 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 Southampton?
The most popular companies between Cardiff and Southampton, are FlixBus, National Express and Great Western Railway (GWR). Be sure to check their seat class offers and the amenities that they provide.
Bus companies: FlixBus and National Express
Train companies: Great Western Railway (GWR)
All you need to know when you travel from Cardiff to Southampton
Check all information on comfort and services on all modes of transports from Cardiff to Southampton. 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 Southampton
How can I reach Southampton from Cardiff?
Every day, there are on average 5 connections between Train and Bus, with which you can get to Southampton from Cardiff.
How far is Southampton from Cardiff?
The distance between Cardiff and Southampton is 139.1 km.
What is the most ecofriendly mode of transport between Cardiff and Southampton?
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 Cardiff to Southampton?
You can get to Southampton with just £11 by taking a Bus from National Express.
What is the fastest way to get from Cardiff to Southampton?
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 Southampton in just 2h 25m with a Train from Great Western Railway (GWR).
More routes to Cardiff and to Southampton
Looking for more options? Here you can see the most popular routes to Cardiff and to Southampton. Simply click on a connection, and you’ll find all the details about the route!
