What is the best way to travel from Cardiff to Southampton?
Looking for a trip? Check and compare all the available Buses and Trains 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 £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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FlixBus6h 20m016:45CardiffKingsway Coach Stop23:05SouthamptonUniversity0EconomyA Bus from FlixBus goes from Kingsway Coach Stop, Cardiff (United Kingdom) at 20/12/2025 16:45:00 to University, Southampton (United Kingdom) arriving at 20/12/2025 23:05:00. 50 Economy ticket for £35 per person are available. Travel duration is 6h 20m
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FlixBus6h 35m016:45CardiffKingsway Coach Stop23:20SouthamptonCoach Station0EconomyA Bus from FlixBus goes from Kingsway Coach Stop, Cardiff (United Kingdom) at 20/12/2025 16:45:00 to Coach Station, Southampton (United Kingdom) arriving at 20/12/2025 23:20:00. 50 Economy ticket for £36 per person are available. Travel duration is 6h 35m
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National Express7h 14m019:46Bristol AirportBristol Airport03:00SouthamptonCoach Station0EconomyA Bus from National Express goes from Bristol Airport, Bristol Airport (United Kingdom) at 20/12/2025 19:46:00 to Coach Station, Southampton (United Kingdom) arriving at 21/12/2025 03:00:00. 50 Economy ticket for £37 per person are available. Travel duration is 7h 14m
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National Express6h 59m019:46Bristol AirportBristol Airport02:45SouthamptonUniversity0EconomyA Bus from National Express goes from Bristol Airport, Bristol Airport (United Kingdom) at 20/12/2025 19:46:00 to University, Southampton (United Kingdom) arriving at 21/12/2025 02:45:00. 50 Economy ticket for £37 per person are available. Travel duration is 6h 59m
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National Express7h 20m016:45CardiffCoach Station00:05SouthamptonCoach Station0EconomyA Bus from National Express goes from Coach Station, Cardiff (United Kingdom) at 20/12/2025 16:45:00 to Coach Station, Southampton (United Kingdom) arriving at 21/12/2025 00:05:00. 50 Economy ticket for £37 per person are available. Travel duration is 7h 20m
Cheapest Buses Saturday
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FlixBus6h 40m006:45CardiffKingsway Coach Stop13:25SouthamptonUniversity0EconomyA Bus from FlixBus goes from Kingsway Coach Stop, Cardiff (United Kingdom) at 21/12/2025 06:45:00 to University, Southampton (United Kingdom) arriving at 21/12/2025 13:25:00. 50 Economy ticket for £28 per person are available. Travel duration is 6h 40m
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FlixBus6h 20m016:45CardiffKingsway Coach Stop23:05SouthamptonUniversity0EconomyA Bus from FlixBus goes from Kingsway Coach Stop, Cardiff (United Kingdom) at 21/12/2025 16:45:00 to University, Southampton (United Kingdom) arriving at 21/12/2025 23:05:00. 50 Economy ticket for £28 per person are available. Travel duration is 6h 20m
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FlixBus6h 55m006:45CardiffKingsway Coach Stop13:40SouthamptonCoach Station0EconomyA Bus from FlixBus goes from Kingsway Coach Stop, Cardiff (United Kingdom) at 21/12/2025 06:45:00 to Coach Station, Southampton (United Kingdom) arriving at 21/12/2025 13:40:00. 50 Economy ticket for £28 per person are available. Travel duration is 6h 55m
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National Express7h 20m016:45CardiffCoach Station00:05SouthamptonCoach Station0EconomyA Bus from National Express goes from Coach Station, Cardiff (United Kingdom) at 21/12/2025 16:45:00 to Coach Station, Southampton (United Kingdom) arriving at 22/12/2025 00:05:00. 50 Economy ticket for £37 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 21/12/2025 18:45:00 to Coach Station, Southampton (United Kingdom) arriving at 22/12/2025 01:30:00. 50 Economy ticket for £37 per person are available. Travel duration is 6h 45m
Cheapest Buses Sunday
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FlixBus6h 40m006:45CardiffKingsway Coach Stop13:25SouthamptonUniversity0EconomyA Bus from FlixBus goes from Kingsway Coach Stop, Cardiff (United Kingdom) at 22/12/2025 06:45:00 to University, Southampton (United Kingdom) arriving at 22/12/2025 13:25:00. 50 Economy ticket for £20 per person are available. Travel duration is 6h 40m
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FlixBus6h 55m006:45CardiffKingsway Coach Stop13:40SouthamptonCoach Station0EconomyA Bus from FlixBus goes from Kingsway Coach Stop, Cardiff (United Kingdom) at 22/12/2025 06:45:00 to Coach Station, Southampton (United Kingdom) arriving at 22/12/2025 13:40:00. 50 Economy ticket for £21 per person are available. Travel duration is 6h 55m
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FlixBus7h 0m010:40CardiffKingsway Coach Stop17:40SouthamptonCoach Station0EconomyA Bus from FlixBus goes from Kingsway Coach Stop, Cardiff (United Kingdom) at 22/12/2025 10:40:00 to Coach Station, Southampton (United Kingdom) arriving at 22/12/2025 17:40:00. 50 Economy ticket for £24 per person are available. Travel duration is 7h 0m
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National Express7h 20m016:45CardiffCoach Station00:05SouthamptonCoach Station0EconomyA Bus from National Express goes from Coach Station, Cardiff (United Kingdom) at 22/12/2025 16:45:00 to Coach Station, Southampton (United Kingdom) arriving at 23/12/2025 00:05:00. 50 Economy ticket for £33 per person are available. Travel duration is 7h 20m
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National Express7h 15m019:45CardiffCoach Station03:00SouthamptonCoach Station0EconomyA Bus from National Express goes from Coach Station, Cardiff (United Kingdom) at 22/12/2025 19:45:00 to Coach Station, Southampton (United Kingdom) arriving at 23/12/2025 03:00:00. 50 Economy ticket for £36 per person are available. Travel duration is 7h 15m
Cheapest Buses Monday
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FlixBus8h 30m014:50CardiffKingsway Coach Stop23:20SouthamptonCoach Station0EconomyA Bus from FlixBus goes from Kingsway Coach Stop, Cardiff (United Kingdom) at 23/12/2025 14:50:00 to Coach Station, Southampton (United Kingdom) arriving at 23/12/2025 23:20:00. 50 Economy ticket for £24 per person are available. Travel duration is 8h 30m
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FlixBus8h 15m014:50CardiffKingsway Coach Stop23:05SouthamptonUniversity0EconomyA Bus from FlixBus goes from Kingsway Coach Stop, Cardiff (United Kingdom) at 23/12/2025 14:50:00 to University, Southampton (United Kingdom) arriving at 23/12/2025 23:05:00. 50 Economy ticket for £25 per person are available. Travel duration is 8h 15m
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FlixBus6h 40m006:45CardiffKingsway Coach Stop13:25SouthamptonUniversity0EconomyA Bus from FlixBus goes from Kingsway Coach Stop, Cardiff (United Kingdom) at 23/12/2025 06:45:00 to University, Southampton (United Kingdom) arriving at 23/12/2025 13:25:00. 50 Economy ticket for £30 per person are available. Travel duration is 6h 40m
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National Express7h 0m018:00CardiffCoach Station01:00SouthamptonCoach Station0EconomyA Bus from National Express goes from Coach Station, Cardiff (United Kingdom) at 23/12/2025 18:00:00 to Coach Station, Southampton (United Kingdom) arriving at 24/12/2025 01:00:00. 50 Economy ticket for £32 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 23/12/2025 19:15:00 to Coach Station, Southampton (United Kingdom) arriving at 24/12/2025 03:00:00. 50 Economy ticket for £32 per person are available. Travel duration is 7h 45m
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Great Western Railway (GWR)2h 32m014:30CardiffCentral Station17:02SouthamptonCentral Station0EconomyA Train from Great Western Railway (GWR) goes from Central Station, Cardiff (United Kingdom) at 23/12/2025 14:30:00 to Central Station, Southampton (United Kingdom) arriving at 23/12/2025 17:02:00. 50 Economy ticket for £55 per person are available. Travel duration is 2h 32m
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Great Western Railway (GWR)2h 34m012:30CardiffCentral Station15:04SouthamptonCentral Station0EconomyA Train from Great Western Railway (GWR) goes from Central Station, Cardiff (United Kingdom) at 23/12/2025 12:30:00 to Central Station, Southampton (United Kingdom) arriving at 23/12/2025 15:04:00. 50 Economy ticket for £61 per person are available. Travel duration is 2h 34m
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Great Western Railway (GWR)2h 32m013:30CardiffCentral Station16:02SouthamptonCentral Station0EconomyA Train from Great Western Railway (GWR) goes from Central Station, Cardiff (United Kingdom) at 23/12/2025 13:30:00 to Central Station, Southampton (United Kingdom) arriving at 23/12/2025 16:02:00. 50 Economy ticket for £61 per person are available. Travel duration is 2h 32m
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Great Western Railway (GWR)2h 25m013:18CardiffCentral Station15:43SouthamptonCentral Station0EconomyA Train from Great Western Railway (GWR) goes from Central Station, Cardiff (United Kingdom) at 23/12/2025 13:18:00 to Central Station, Southampton (United Kingdom) arriving at 23/12/2025 15:43:00. 50 Economy ticket for £110 per person are available. Travel duration is 2h 25m
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Great Western Railway (GWR)2h 26m014:18CardiffCentral Station16:44SouthamptonCentral Station0EconomyA Train from Great Western Railway (GWR) goes from Central Station, Cardiff (United Kingdom) at 23/12/2025 14:18:00 to Central Station, Southampton (United Kingdom) arriving at 23/12/2025 16:44:00. 50 Economy ticket for £110 per person are available. Travel duration is 2h 26m
Cheapest Buses Tuesday
Cheapest Trains Tuesday
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National Express7h 50m015:45CardiffCoach Station23:35SouthamptonCoach Station0EconomyA Bus from National Express goes from Coach Station, Cardiff (United Kingdom) at 24/12/2025 15:45:00 to Coach Station, Southampton (United Kingdom) arriving at 24/12/2025 23:35:00. 50 Economy ticket for £34 per person are available. Travel duration is 7h 50m
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FlixBus6h 45m010:40CardiffKingsway Coach Stop17:25SouthamptonUniversity0EconomyA Bus from FlixBus goes from Kingsway Coach Stop, Cardiff (United Kingdom) at 24/12/2025 10:40:00 to University, Southampton (United Kingdom) arriving at 24/12/2025 17:25:00. 50 Economy ticket for £37 per person are available. Travel duration is 6h 45m
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FlixBus7h 0m010:40CardiffKingsway Coach Stop17:40SouthamptonCoach Station0EconomyA Bus from FlixBus goes from Kingsway Coach Stop, Cardiff (United Kingdom) at 24/12/2025 10:40:00 to Coach Station, Southampton (United Kingdom) arriving at 24/12/2025 17:40:00. 50 Economy ticket for £37 per person are available. Travel duration is 7h 0m
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FlixBus6h 40m006:45CardiffKingsway Coach Stop13:25SouthamptonUniversity0EconomyA Bus from FlixBus goes from Kingsway Coach Stop, Cardiff (United Kingdom) at 24/12/2025 06:45:00 to University, Southampton (United Kingdom) arriving at 24/12/2025 13:25:00. 50 Economy ticket for £39 per person are available. Travel duration is 6h 40m
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National Express6h 30m009:25CardiffCoach Station15:55SouthamptonCoach Station0EconomyA Bus from National Express goes from Coach Station, Cardiff (United Kingdom) at 24/12/2025 09:25:00 to Coach Station, Southampton (United Kingdom) arriving at 24/12/2025 15:55:00. 50 Economy ticket for £60 per person are available. Travel duration is 6h 30m
Cheapest Buses Wednesday
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FlixBus8h 30m014:50CardiffKingsway Coach Stop23:20SouthamptonCoach Station0EconomyA Bus from FlixBus goes from Kingsway Coach Stop, Cardiff (United Kingdom) at 25/12/2025 14:50:00 to Coach Station, Southampton (United Kingdom) arriving at 25/12/2025 23:20:00. 50 Economy ticket for £53 per person are available. Travel duration is 8h 30m
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FlixBus8h 15m014:50CardiffKingsway Coach Stop23:05SouthamptonUniversity0EconomyA Bus from FlixBus goes from Kingsway Coach Stop, Cardiff (United Kingdom) at 25/12/2025 14:50:00 to University, Southampton (United Kingdom) arriving at 25/12/2025 23:05:00. 50 Economy ticket for £56 per person are available. Travel duration is 8h 15m
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FlixBus8h 55m008:45CardiffKingsway Coach Stop17:40SouthamptonCoach Station0EconomyA Bus from FlixBus goes from Kingsway Coach Stop, Cardiff (United Kingdom) at 25/12/2025 08:45:00 to Coach Station, Southampton (United Kingdom) arriving at 25/12/2025 17:40:00. 50 Economy ticket for £77 per person are available. Travel duration is 8h 55m
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National Express8h 15m016:05CardiffCoach Station00:20SouthamptonCoach Station0EconomyA Bus from National Express goes from Coach Station, Cardiff (United Kingdom) at 25/12/2025 16:05:00 to Coach Station, Southampton (United Kingdom) arriving at 26/12/2025 00:20:00. 50 Economy ticket for £87 per person are available. Travel duration is 8h 15m
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National Express7h 15m007:05CardiffCoach Station14:20SouthamptonCoach Station0EconomyA Bus from National Express goes from Coach Station, Cardiff (United Kingdom) at 25/12/2025 07:05:00 to Coach Station, Southampton (United Kingdom) arriving at 25/12/2025 14:20:00. 50 Economy ticket for £119 per person are available. Travel duration is 7h 15m
Cheapest Buses Thursday
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FlixBus8h 15m014:50CardiffKingsway Coach Stop23:05SouthamptonUniversity0EconomyA Bus from FlixBus goes from Kingsway Coach Stop, Cardiff (United Kingdom) at 26/12/2025 14:50:00 to University, Southampton (United Kingdom) arriving at 26/12/2025 23:05:00. 50 Economy ticket for £43 per person are available. Travel duration is 8h 15m
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FlixBus8h 30m014:50CardiffKingsway Coach Stop23:20SouthamptonCoach Station0EconomyA Bus from FlixBus goes from Kingsway Coach Stop, Cardiff (United Kingdom) at 26/12/2025 14:50:00 to Coach Station, Southampton (United Kingdom) arriving at 26/12/2025 23:20:00. 50 Economy ticket for £44 per person are available. Travel duration is 8h 30m
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National Express7h 15m019:45CardiffCoach Station03:00SouthamptonCoach Station0EconomyA Bus from National Express goes from Coach Station, Cardiff (United Kingdom) at 26/12/2025 19:45:00 to Coach Station, Southampton (United Kingdom) arriving at 27/12/2025 03:00:00. 50 Economy ticket for £52 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 26/12/2025 16:45:00 to Coach Station, Southampton (United Kingdom) arriving at 27/12/2025 00:05:00. 50 Economy ticket for £58 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 26/12/2025 18:45:00 to Coach Station, Southampton (United Kingdom) arriving at 27/12/2025 01:30:00. 50 Economy ticket for £58 per person are available. Travel duration is 6h 45m
Cheapest Buses Friday
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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FlixBus6h 20m016:45CardiffKingsway Coach Stop23:05SouthamptonUniversity0EconomyA Bus from FlixBus goes from Kingsway Coach Stop, Cardiff (United Kingdom) at 20/12/2025 16:45:00 to University, Southampton (United Kingdom) arriving at 20/12/2025 23:05:00. 50 Economy ticket for £35 per person are available. Travel duration is 6h 20m
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FlixBus6h 35m016:45CardiffKingsway Coach Stop23:20SouthamptonCoach Station0EconomyA Bus from FlixBus goes from Kingsway Coach Stop, Cardiff (United Kingdom) at 20/12/2025 16:45:00 to Coach Station, Southampton (United Kingdom) arriving at 20/12/2025 23:20:00. 50 Economy ticket for £36 per person are available. Travel duration is 6h 35m
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National Express6h 59m019:46Bristol AirportBristol Airport02:45SouthamptonUniversity0EconomyA Bus from National Express goes from Bristol Airport, Bristol Airport (United Kingdom) at 20/12/2025 19:46:00 to University, Southampton (United Kingdom) arriving at 21/12/2025 02:45:00. 50 Economy ticket for £37 per person are available. Travel duration is 6h 59m
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National Express7h 14m019:46Bristol AirportBristol Airport03:00SouthamptonCoach Station0EconomyA Bus from National Express goes from Bristol Airport, Bristol Airport (United Kingdom) at 20/12/2025 19:46:00 to Coach Station, Southampton (United Kingdom) arriving at 21/12/2025 03:00:00. 50 Economy ticket for £37 per person are available. Travel duration is 7h 14m
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National Express7h 20m016:45CardiffCoach Station00:05SouthamptonCoach Station0EconomyA Bus from National Express goes from Coach Station, Cardiff (United Kingdom) at 20/12/2025 16:45:00 to Coach Station, Southampton (United Kingdom) arriving at 21/12/2025 00:05:00. 50 Economy ticket for £37 per person are available. Travel duration is 7h 20m
Fastest Buses Saturday
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FlixBus6h 20m016:45CardiffKingsway Coach Stop23:05SouthamptonUniversity0EconomyA Bus from FlixBus goes from Kingsway Coach Stop, Cardiff (United Kingdom) at 21/12/2025 16:45:00 to University, Southampton (United Kingdom) arriving at 21/12/2025 23:05:00. 50 Economy ticket for £28 per person are available. Travel duration is 6h 20m
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FlixBus6h 40m006:45CardiffKingsway Coach Stop13:25SouthamptonUniversity0EconomyA Bus from FlixBus goes from Kingsway Coach Stop, Cardiff (United Kingdom) at 21/12/2025 06:45:00 to University, Southampton (United Kingdom) arriving at 21/12/2025 13:25:00. 50 Economy ticket for £28 per person are available. Travel duration is 6h 40m
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National Express6h 45m018:45CardiffCoach Station01:30SouthamptonCoach Station0EconomyA Bus from National Express goes from Coach Station, Cardiff (United Kingdom) at 21/12/2025 18:45:00 to Coach Station, Southampton (United Kingdom) arriving at 22/12/2025 01:30:00. 50 Economy ticket for £37 per person are available. Travel duration is 6h 45m
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FlixBus6h 55m006:45CardiffKingsway Coach Stop13:40SouthamptonCoach Station0EconomyA Bus from FlixBus goes from Kingsway Coach Stop, Cardiff (United Kingdom) at 21/12/2025 06:45:00 to Coach Station, Southampton (United Kingdom) arriving at 21/12/2025 13:40:00. 50 Economy ticket for £28 per person are available. Travel duration is 6h 55m
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National Express7h 20m016:45CardiffCoach Station00:05SouthamptonCoach Station0EconomyA Bus from National Express goes from Coach Station, Cardiff (United Kingdom) at 21/12/2025 16:45:00 to Coach Station, Southampton (United Kingdom) arriving at 22/12/2025 00:05:00. 50 Economy ticket for £37 per person are available. Travel duration is 7h 20m
Fastest Buses Sunday
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FlixBus6h 40m006:45CardiffKingsway Coach Stop13:25SouthamptonUniversity0EconomyA Bus from FlixBus goes from Kingsway Coach Stop, Cardiff (United Kingdom) at 22/12/2025 06:45:00 to University, Southampton (United Kingdom) arriving at 22/12/2025 13:25:00. 50 Economy ticket for £20 per person are available. Travel duration is 6h 40m
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FlixBus6h 55m006:45CardiffKingsway Coach Stop13:40SouthamptonCoach Station0EconomyA Bus from FlixBus goes from Kingsway Coach Stop, Cardiff (United Kingdom) at 22/12/2025 06:45:00 to Coach Station, Southampton (United Kingdom) arriving at 22/12/2025 13:40:00. 50 Economy ticket for £21 per person are available. Travel duration is 6h 55m
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FlixBus7h 0m010:40CardiffKingsway Coach Stop17:40SouthamptonCoach Station0EconomyA Bus from FlixBus goes from Kingsway Coach Stop, Cardiff (United Kingdom) at 22/12/2025 10:40:00 to Coach Station, Southampton (United Kingdom) arriving at 22/12/2025 17:40:00. 50 Economy ticket for £24 per person are available. Travel duration is 7h 0m
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National Express7h 15m019:45CardiffCoach Station03:00SouthamptonCoach Station0EconomyA Bus from National Express goes from Coach Station, Cardiff (United Kingdom) at 22/12/2025 19:45:00 to Coach Station, Southampton (United Kingdom) arriving at 23/12/2025 03:00:00. 50 Economy ticket for £36 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 22/12/2025 16:45:00 to Coach Station, Southampton (United Kingdom) arriving at 23/12/2025 00:05:00. 50 Economy ticket for £33 per person are available. Travel duration is 7h 20m
Fastest Buses Monday
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Great Western Railway (GWR)2h 25m013:18CardiffCentral Station15:43SouthamptonCentral Station0EconomyA Train from Great Western Railway (GWR) goes from Central Station, Cardiff (United Kingdom) at 23/12/2025 13:18:00 to Central Station, Southampton (United Kingdom) arriving at 23/12/2025 15:43:00. 50 Economy ticket for £110 per person are available. Travel duration is 2h 25m
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Great Western Railway (GWR)2h 26m014:18CardiffCentral Station16:44SouthamptonCentral Station0EconomyA Train from Great Western Railway (GWR) goes from Central Station, Cardiff (United Kingdom) at 23/12/2025 14:18:00 to Central Station, Southampton (United Kingdom) arriving at 23/12/2025 16:44:00. 50 Economy ticket for £110 per person are available. Travel duration is 2h 26m
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Great Western Railway (GWR)2h 32m014:30CardiffCentral Station17:02SouthamptonCentral Station0EconomyA Train from Great Western Railway (GWR) goes from Central Station, Cardiff (United Kingdom) at 23/12/2025 14:30:00 to Central Station, Southampton (United Kingdom) arriving at 23/12/2025 17:02:00. 50 Economy ticket for £55 per person are available. Travel duration is 2h 32m
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Great Western Railway (GWR)2h 32m013:30CardiffCentral Station16:02SouthamptonCentral Station0EconomyA Train from Great Western Railway (GWR) goes from Central Station, Cardiff (United Kingdom) at 23/12/2025 13:30:00 to Central Station, Southampton (United Kingdom) arriving at 23/12/2025 16:02:00. 50 Economy ticket for £61 per person are available. Travel duration is 2h 32m
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Great Western Railway (GWR)2h 34m012:30CardiffCentral Station15:04SouthamptonCentral Station0EconomyA Train from Great Western Railway (GWR) goes from Central Station, Cardiff (United Kingdom) at 23/12/2025 12:30:00 to Central Station, Southampton (United Kingdom) arriving at 23/12/2025 15:04:00. 50 Economy ticket for £61 per person are available. Travel duration is 2h 34m
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FlixBus6h 40m006:45CardiffKingsway Coach Stop13:25SouthamptonUniversity0EconomyA Bus from FlixBus goes from Kingsway Coach Stop, Cardiff (United Kingdom) at 23/12/2025 06:45:00 to University, Southampton (United Kingdom) arriving at 23/12/2025 13:25:00. 50 Economy ticket for £30 per person are available. Travel duration is 6h 40m
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National Express7h 0m018:00CardiffCoach Station01:00SouthamptonCoach Station0EconomyA Bus from National Express goes from Coach Station, Cardiff (United Kingdom) at 23/12/2025 18:00:00 to Coach Station, Southampton (United Kingdom) arriving at 24/12/2025 01:00:00. 50 Economy ticket for £32 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 23/12/2025 19:15:00 to Coach Station, Southampton (United Kingdom) arriving at 24/12/2025 03:00:00. 50 Economy ticket for £32 per person are available. Travel duration is 7h 45m
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FlixBus8h 15m014:50CardiffKingsway Coach Stop23:05SouthamptonUniversity0EconomyA Bus from FlixBus goes from Kingsway Coach Stop, Cardiff (United Kingdom) at 23/12/2025 14:50:00 to University, Southampton (United Kingdom) arriving at 23/12/2025 23:05:00. 50 Economy ticket for £25 per person are available. Travel duration is 8h 15m
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FlixBus8h 30m014:50CardiffKingsway Coach Stop23:20SouthamptonCoach Station0EconomyA Bus from FlixBus goes from Kingsway Coach Stop, Cardiff (United Kingdom) at 23/12/2025 14:50:00 to Coach Station, Southampton (United Kingdom) arriving at 23/12/2025 23:20:00. 50 Economy ticket for £24 per person are available. Travel duration is 8h 30m
Fastest Trains Tuesday
Fastest Buses Tuesday
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National Express6h 30m009:25CardiffCoach Station15:55SouthamptonCoach Station0EconomyA Bus from National Express goes from Coach Station, Cardiff (United Kingdom) at 24/12/2025 09:25:00 to Coach Station, Southampton (United Kingdom) arriving at 24/12/2025 15:55:00. 50 Economy ticket for £60 per person are available. Travel duration is 6h 30m
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FlixBus6h 40m006:45CardiffKingsway Coach Stop13:25SouthamptonUniversity0EconomyA Bus from FlixBus goes from Kingsway Coach Stop, Cardiff (United Kingdom) at 24/12/2025 06:45:00 to University, Southampton (United Kingdom) arriving at 24/12/2025 13:25:00. 50 Economy ticket for £39 per person are available. Travel duration is 6h 40m
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FlixBus6h 45m010:40CardiffKingsway Coach Stop17:25SouthamptonUniversity0EconomyA Bus from FlixBus goes from Kingsway Coach Stop, Cardiff (United Kingdom) at 24/12/2025 10:40:00 to University, Southampton (United Kingdom) arriving at 24/12/2025 17:25:00. 50 Economy ticket for £37 per person are available. Travel duration is 6h 45m
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FlixBus7h 0m010:40CardiffKingsway Coach Stop17:40SouthamptonCoach Station0EconomyA Bus from FlixBus goes from Kingsway Coach Stop, Cardiff (United Kingdom) at 24/12/2025 10:40:00 to Coach Station, Southampton (United Kingdom) arriving at 24/12/2025 17:40:00. 50 Economy ticket for £37 per person are available. Travel duration is 7h 0m
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National Express7h 50m015:45CardiffCoach Station23:35SouthamptonCoach Station0EconomyA Bus from National Express goes from Coach Station, Cardiff (United Kingdom) at 24/12/2025 15:45:00 to Coach Station, Southampton (United Kingdom) arriving at 24/12/2025 23:35:00. 50 Economy ticket for £34 per person are available. Travel duration is 7h 50m
Fastest Buses Wednesday
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National Express7h 15m007:05CardiffCoach Station14:20SouthamptonCoach Station0EconomyA Bus from National Express goes from Coach Station, Cardiff (United Kingdom) at 25/12/2025 07:05:00 to Coach Station, Southampton (United Kingdom) arriving at 25/12/2025 14:20:00. 50 Economy ticket for £119 per person are available. Travel duration is 7h 15m
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FlixBus8h 15m014:50CardiffKingsway Coach Stop23:05SouthamptonUniversity0EconomyA Bus from FlixBus goes from Kingsway Coach Stop, Cardiff (United Kingdom) at 25/12/2025 14:50:00 to University, Southampton (United Kingdom) arriving at 25/12/2025 23:05:00. 50 Economy ticket for £56 per person are available. Travel duration is 8h 15m
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National Express8h 15m016:05CardiffCoach Station00:20SouthamptonCoach Station0EconomyA Bus from National Express goes from Coach Station, Cardiff (United Kingdom) at 25/12/2025 16:05:00 to Coach Station, Southampton (United Kingdom) arriving at 26/12/2025 00:20:00. 50 Economy ticket for £87 per person are available. Travel duration is 8h 15m
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FlixBus8h 30m014:50CardiffKingsway Coach Stop23:20SouthamptonCoach Station0EconomyA Bus from FlixBus goes from Kingsway Coach Stop, Cardiff (United Kingdom) at 25/12/2025 14:50:00 to Coach Station, Southampton (United Kingdom) arriving at 25/12/2025 23:20:00. 50 Economy ticket for £53 per person are available. Travel duration is 8h 30m
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FlixBus8h 55m008:45CardiffKingsway Coach Stop17:40SouthamptonCoach Station0EconomyA Bus from FlixBus goes from Kingsway Coach Stop, Cardiff (United Kingdom) at 25/12/2025 08:45:00 to Coach Station, Southampton (United Kingdom) arriving at 25/12/2025 17:40:00. 50 Economy ticket for £77 per person are available. Travel duration is 8h 55m
Fastest Buses Thursday
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National Express6h 45m018:45CardiffCoach Station01:30SouthamptonCoach Station0EconomyA Bus from National Express goes from Coach Station, Cardiff (United Kingdom) at 26/12/2025 18:45:00 to Coach Station, Southampton (United Kingdom) arriving at 27/12/2025 01:30:00. 50 Economy ticket for £58 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 26/12/2025 19:45:00 to Coach Station, Southampton (United Kingdom) arriving at 27/12/2025 03:00:00. 50 Economy ticket for £52 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 26/12/2025 16:45:00 to Coach Station, Southampton (United Kingdom) arriving at 27/12/2025 00:05:00. 50 Economy ticket for £58 per person are available. Travel duration is 7h 20m
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FlixBus8h 15m014:50CardiffKingsway Coach Stop23:05SouthamptonUniversity0EconomyA Bus from FlixBus goes from Kingsway Coach Stop, Cardiff (United Kingdom) at 26/12/2025 14:50:00 to University, Southampton (United Kingdom) arriving at 26/12/2025 23:05:00. 50 Economy ticket for £43 per person are available. Travel duration is 8h 15m
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FlixBus8h 30m014:50CardiffKingsway Coach Stop23:20SouthamptonCoach Station0EconomyA Bus from FlixBus goes from Kingsway Coach Stop, Cardiff (United Kingdom) at 26/12/2025 14:50:00 to Coach Station, Southampton (United Kingdom) arriving at 26/12/2025 23:20:00. 50 Economy ticket for £44 per person are available. Travel duration is 8h 30m
Fastest Buses Friday
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, Dingle Road Train Station or Penarth Train Station, while in Southampton you will be arriving at Central Station, Coach Station or Swanwick 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 Southampton from Cardiff? With 5 connections between 3 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 Cardiff and Southampton, 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 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 Bus and Train, 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 £20 by taking a Bus from FlixBus.
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!
- Trips to Cardiff
- Aberdeen to Cardiff
- Bath to Cardiff
- Birmingham to Cardiff
- Bristol Airport to Cardiff
- Bristol to Cardiff
- Doncaster 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
- Middlesbrough to Cardiff
- Newcastle upon Tyne to Cardiff
- Paris to Cardiff
- Reading to Cardiff
- Sheffield to Cardiff
- Southampton to Cardiff
- Sunderland to Cardiff
- Swansea to Cardiff
- Trips to Southampton
- Aberdeen to Southampton
- Birmingham to Southampton
- Bournemouth to Southampton
- Brighton to Southampton
- Carlisle to Southampton
- Coventry to Southampton
- Edinburgh to Southampton
- Glasgow to Southampton
- Leeds to Southampton
- London Gatwick Airport to Southampton
- London Heathrow Airport to Southampton
- London to Southampton
- Luton to Southampton
- Middlesbrough to Southampton
- Newcastle upon Tyne to Southampton
- Oxford to Southampton
- Poole to Southampton
- Sheffield to Southampton
- Swansea to Southampton
