What is the best way to travel from Southampton to Cardiff?
Looking for a trip? Check and compare all the available Trains and Buses 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 £17 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 10m017:05SouthamptonUniversity23:15CardiffKingsway Coach Stop0EconomyA Bus from FlixBus goes from University, Southampton (United Kingdom) at 14/06/2026 17:05:00 to Kingsway Coach Stop, Cardiff (United Kingdom) arriving at 14/06/2026 23:15:00. 50 Economy ticket for £18 per person are available. Travel duration is 6h 10m
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FlixBus6h 30m016:45SouthamptonCoach Station23:15CardiffKingsway Coach Stop0EconomyA Bus from FlixBus goes from Coach Station, Southampton (United Kingdom) at 14/06/2026 16:45:00 to Kingsway Coach Stop, Cardiff (United Kingdom) arriving at 14/06/2026 23:15:00. 50 Economy ticket for £18 per person are available. Travel duration is 6h 30m
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FlixBus5h 45m006:25SouthamptonUniversity12:10CardiffKingsway Coach Stop0EconomyA Bus from FlixBus goes from University, Southampton (United Kingdom) at 14/06/2026 06:25:00 to Kingsway Coach Stop, Cardiff (United Kingdom) arriving at 14/06/2026 12:10:00. 50 Economy ticket for £19 per person are available. Travel duration is 5h 45m
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National Express5h 10m020:30SouthamptonCoach Station01:40CardiffCoach Station0EconomyA Bus from National Express goes from Coach Station, Southampton (United Kingdom) at 14/06/2026 20:30:00 to Coach Station, Cardiff (United Kingdom) arriving at 15/06/2026 01:40:00. 50 Economy ticket for £50 per person are available. Travel duration is 5h 10m
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National Express6h 15m015:45SouthamptonCoach Station22:00CardiffCoach Station0EconomyA Bus from National Express goes from Coach Station, Southampton (United Kingdom) at 14/06/2026 15:45:00 to Coach Station, Cardiff (United Kingdom) arriving at 14/06/2026 22:00:00. 50 Economy ticket for £59 per person are available. Travel duration is 6h 15m
Cheapest Buses Sunday
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FlixBus6h 30m016:45SouthamptonCoach Station23:15CardiffKingsway Coach Stop0EconomyA Bus from FlixBus goes from Coach Station, Southampton (United Kingdom) at 15/06/2026 16:45:00 to Kingsway Coach Stop, Cardiff (United Kingdom) arriving at 15/06/2026 23:15:00. 50 Economy ticket for £26 per person are available. Travel duration is 6h 30m
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FlixBus6h 10m017:05SouthamptonUniversity23:15CardiffKingsway Coach Stop0EconomyA Bus from FlixBus goes from University, Southampton (United Kingdom) at 15/06/2026 17:05:00 to Kingsway Coach Stop, Cardiff (United Kingdom) arriving at 15/06/2026 23:15:00. 50 Economy ticket for £26 per person are available. Travel duration is 6h 10m
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FlixBus7h 30m014:45SouthamptonCoach Station22:15CardiffKingsway Coach Stop0EconomyA Bus from FlixBus goes from Coach Station, Southampton (United Kingdom) at 15/06/2026 14:45:00 to Kingsway Coach Stop, Cardiff (United Kingdom) arriving at 15/06/2026 22:15:00. 50 Economy ticket for £29 per person are available. Travel duration is 7h 30m
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National Express6h 0m006:25SouthamptonCoach Station12:25CardiffCoach Station0EconomyA Bus from National Express goes from Coach Station, Southampton (United Kingdom) at 15/06/2026 06:25:00 to Coach Station, Cardiff (United Kingdom) arriving at 15/06/2026 12:25:00. 50 Economy ticket for £50 per person are available. Travel duration is 6h 0m
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National Express6h 50m013:15SouthamptonCoach Station20:05CardiffCoach Station0EconomyA Bus from National Express goes from Coach Station, Southampton (United Kingdom) at 15/06/2026 13:15:00 to Coach Station, Cardiff (United Kingdom) arriving at 15/06/2026 20:05:00. 50 Economy ticket for £50 per person are available. Travel duration is 6h 50m
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Great Western Railway (GWR)2h 42m008:10SouthamptonCentral Station10:52CardiffCentral Station0EconomyA Train from Great Western Railway (GWR) goes from Central Station, Southampton (United Kingdom) at 15/06/2026 08:10:00 to Central Station, Cardiff (United Kingdom) arriving at 15/06/2026 10:52:00. 50 Economy ticket for £61 per person are available. Travel duration is 2h 42m
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Great Western Railway (GWR)3h 17m008:23SouthamptonCentral Station11:40CardiffCentral Station0EconomyA Train from Great Western Railway (GWR) goes from Central Station, Southampton (United Kingdom) at 15/06/2026 08:23:00 to Central Station, Cardiff (United Kingdom) arriving at 15/06/2026 11:40:00. 50 Economy ticket for £61 per person are available. Travel duration is 3h 17m
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CrossCountry3h 1m010:15SouthamptonCentral Station13:16CardiffCentral Station0EconomyA Train from CrossCountry goes from Central Station, Southampton (United Kingdom) at 15/06/2026 10:15:00 to Central Station, Cardiff (United Kingdom) arriving at 15/06/2026 13:16:00. 50 Economy ticket for £110 per person are available. Travel duration is 3h 1m
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CrossCountry2h 21m011:15SouthamptonCentral Station13:36CardiffCentral Station0EconomyA Train from CrossCountry goes from Central Station, Southampton (United Kingdom) at 15/06/2026 11:15:00 to Central Station, Cardiff (United Kingdom) arriving at 15/06/2026 13:36:00. 50 Economy ticket for £110 per person are available. Travel duration is 2h 21m
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South Western Railway3h 7m009:30SouthamptonCentral Station12:37CardiffCentral Station0EconomyA Train from South Western Railway goes from Central Station, Southampton (United Kingdom) at 15/06/2026 09:30:00 to Central Station, Cardiff (United Kingdom) arriving at 15/06/2026 12:37:00. 50 Economy ticket for £110 per person are available. Travel duration is 3h 7m
Cheapest Buses Monday
Cheapest Trains Monday
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FlixBus6h 40m004:05SouthamptonCoach Station10:45CardiffKingsway Coach Stop0EconomyA Bus from FlixBus goes from Coach Station, Southampton (United Kingdom) at 16/06/2026 04:05:00 to Kingsway Coach Stop, Cardiff (United Kingdom) arriving at 16/06/2026 10:45:00. 50 Economy ticket for £20 per person are available. Travel duration is 6h 40m
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FlixBus7h 50m010:45SouthamptonCoach Station18:35CardiffKingsway Coach Stop0EconomyA Bus from FlixBus goes from Coach Station, Southampton (United Kingdom) at 16/06/2026 10:45:00 to Kingsway Coach Stop, Cardiff (United Kingdom) arriving at 16/06/2026 18:35:00. 50 Economy ticket for £20 per person are available. Travel duration is 7h 50m
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FlixBus6h 25m004:20SouthamptonUniversity10:45CardiffKingsway Coach Stop0EconomyA Bus from FlixBus goes from University, Southampton (United Kingdom) at 16/06/2026 04:20:00 to Kingsway Coach Stop, Cardiff (United Kingdom) arriving at 16/06/2026 10:45:00. 50 Economy ticket for £20 per person are available. Travel duration is 6h 25m
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National Express5h 10m020:30SouthamptonCoach Station01:40CardiffCoach Station0EconomyA Bus from National Express goes from Coach Station, Southampton (United Kingdom) at 16/06/2026 20:30:00 to Coach Station, Cardiff (United Kingdom) arriving at 17/06/2026 01:40:00. 50 Economy ticket for £36 per person are available. Travel duration is 5h 10m
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National Express6h 35m013:30SouthamptonCoach Station20:05CardiffCoach Station0EconomyA Bus from National Express goes from Coach Station, Southampton (United Kingdom) at 16/06/2026 13:30:00 to Coach Station, Cardiff (United Kingdom) arriving at 16/06/2026 20:05:00. 50 Economy ticket for £40 per person are available. Travel duration is 6h 35m
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Great Western Railway (GWR)2h 35m009:11SouthamptonCentral Station11:46CardiffCentral Station0EconomyA Train from Great Western Railway (GWR) goes from Central Station, Southampton (United Kingdom) at 16/06/2026 09:11:00 to Central Station, Cardiff (United Kingdom) arriving at 16/06/2026 11:46:00. 50 Economy ticket for £34 per person are available. Travel duration is 2h 35m
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Great Western Railway (GWR)2h 59m006:47SouthamptonCentral Station09:46CardiffCentral Station0EconomyA Train from Great Western Railway (GWR) goes from Central Station, Southampton (United Kingdom) at 16/06/2026 06:47:00 to Central Station, Cardiff (United Kingdom) arriving at 16/06/2026 09:46:00. 50 Economy ticket for £40 per person are available. Travel duration is 2h 59m
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CrossCountry2h 55m009:15SouthamptonCentral Station12:10CardiffCentral Station0EconomyA Train from CrossCountry goes from Central Station, Southampton (United Kingdom) at 16/06/2026 09:15:00 to Central Station, Cardiff (United Kingdom) arriving at 16/06/2026 12:10:00. 50 Economy ticket for £147 per person are available. Travel duration is 2h 55m
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CrossCountry3h 24m005:15SouthamptonCentral Station08:39CardiffCentral Station0EconomyA Train from CrossCountry goes from Central Station, Southampton (United Kingdom) at 16/06/2026 05:15:00 to Central Station, Cardiff (United Kingdom) arriving at 16/06/2026 08:39:00. 50 Economy ticket for £159 per person are available. Travel duration is 3h 24m
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South Western Railway3h 13m005:55SouthamptonCentral Station09:08CardiffCentral Station0EconomyA Train from South Western Railway goes from Central Station, Southampton (United Kingdom) at 16/06/2026 05:55:00 to Central Station, Cardiff (United Kingdom) arriving at 16/06/2026 09:08:00. 50 Economy ticket for £159 per person are available. Travel duration is 3h 13m
Cheapest Buses Tuesday
Cheapest Trains Tuesday
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FlixBus6h 40m004:05SouthamptonCoach Station10:45CardiffKingsway Coach Stop0EconomyA Bus from FlixBus goes from Coach Station, Southampton (United Kingdom) at 17/06/2026 04:05:00 to Kingsway Coach Stop, Cardiff (United Kingdom) arriving at 17/06/2026 10:45:00. 50 Economy ticket for £17 per person are available. Travel duration is 6h 40m
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FlixBus7h 30m014:45SouthamptonCoach Station22:15CardiffKingsway Coach Stop0EconomyA Bus from FlixBus goes from Coach Station, Southampton (United Kingdom) at 17/06/2026 14:45:00 to Kingsway Coach Stop, Cardiff (United Kingdom) arriving at 17/06/2026 22:15:00. 50 Economy ticket for £17 per person are available. Travel duration is 7h 30m
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FlixBus6h 25m004:20SouthamptonUniversity10:45CardiffKingsway Coach Stop0EconomyA Bus from FlixBus goes from University, Southampton (United Kingdom) at 17/06/2026 04:20:00 to Kingsway Coach Stop, Cardiff (United Kingdom) arriving at 17/06/2026 10:45:00. 50 Economy ticket for £17 per person are available. Travel duration is 6h 25m
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National Express5h 10m020:30SouthamptonCoach Station01:40CardiffCoach Station0EconomyA Bus from National Express goes from Coach Station, Southampton (United Kingdom) at 17/06/2026 20:30:00 to Coach Station, Cardiff (United Kingdom) arriving at 18/06/2026 01:40:00. 50 Economy ticket for £33 per person are available. Travel duration is 5h 10m
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National Express6h 45m004:15SouthamptonCoach Station11:00CardiffCoach Station0EconomyA Bus from National Express goes from Coach Station, Southampton (United Kingdom) at 17/06/2026 04:15:00 to Coach Station, Cardiff (United Kingdom) arriving at 17/06/2026 11:00:00. 50 Economy ticket for £34 per person are available. Travel duration is 6h 45m
Cheapest Buses Wednesday
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National Express6h 10m016:30SouthamptonCoach Station22:40CardiffCoach Station0EconomyA Bus from National Express goes from Coach Station, Southampton (United Kingdom) at 18/06/2026 16:30:00 to Coach Station, Cardiff (United Kingdom) arriving at 18/06/2026 22:40:00. 50 Economy ticket for £30 per person are available. Travel duration is 6h 10m
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National Express5h 10m020:30SouthamptonCoach Station01:40CardiffCoach Station0EconomyA Bus from National Express goes from Coach Station, Southampton (United Kingdom) at 18/06/2026 20:30:00 to Coach Station, Cardiff (United Kingdom) arriving at 19/06/2026 01:40:00. 50 Economy ticket for £30 per person are available. Travel duration is 5h 10m
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National Express6h 45m004:15SouthamptonCoach Station11:00CardiffCoach Station0EconomyA Bus from National Express goes from Coach Station, Southampton (United Kingdom) at 18/06/2026 04:15:00 to Coach Station, Cardiff (United Kingdom) arriving at 18/06/2026 11:00:00. 50 Economy ticket for £33 per person are available. Travel duration is 6h 45m
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National Express6h 35m013:30SouthamptonCoach Station20:05CardiffCoach Station0EconomyA Bus from National Express goes from Coach Station, Southampton (United Kingdom) at 18/06/2026 13:30:00 to Coach Station, Cardiff (United Kingdom) arriving at 18/06/2026 20:05:00. 50 Economy ticket for £37 per person are available. Travel duration is 6h 35m
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National Express6h 0m015:00SouthamptonCoach Station21:00CardiffCoach Station0EconomyA Bus from National Express goes from Coach Station, Southampton (United Kingdom) at 18/06/2026 15:00:00 to Coach Station, Cardiff (United Kingdom) arriving at 18/06/2026 21:00:00. 50 Economy ticket for £37 per person are available. Travel duration is 6h 0m
Cheapest Buses Thursday
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FlixBus6h 40m004:05SouthamptonCoach Station10:45CardiffKingsway Coach Stop0EconomyA Bus from FlixBus goes from Coach Station, Southampton (United Kingdom) at 19/06/2026 04:05:00 to Kingsway Coach Stop, Cardiff (United Kingdom) arriving at 19/06/2026 10:45:00. 50 Economy ticket for £18 per person are available. Travel duration is 6h 40m
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FlixBus6h 35m014:45SouthamptonCoach Station21:20CardiffKingsway Coach Stop0EconomyA Bus from FlixBus goes from Coach Station, Southampton (United Kingdom) at 19/06/2026 14:45:00 to Kingsway Coach Stop, Cardiff (United Kingdom) arriving at 19/06/2026 21:20:00. 50 Economy ticket for £18 per person are available. Travel duration is 6h 35m
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FlixBus6h 25m004:20SouthamptonUniversity10:45CardiffKingsway Coach Stop0EconomyA Bus from FlixBus goes from University, Southampton (United Kingdom) at 19/06/2026 04:20:00 to Kingsway Coach Stop, Cardiff (United Kingdom) arriving at 19/06/2026 10:45:00. 50 Economy ticket for £18 per person are available. Travel duration is 6h 25m
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National Express6h 25m012:15SouthamptonCoach Station18:40CardiffCoach Station0EconomyA Bus from National Express goes from Coach Station, Southampton (United Kingdom) at 19/06/2026 12:15:00 to Coach Station, Cardiff (United Kingdom) arriving at 19/06/2026 18:40:00. 50 Economy ticket for £33 per person are available. Travel duration is 6h 25m
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National Express5h 20m017:20SouthamptonCoach Station22:40CardiffCoach Station0EconomyA Bus from National Express goes from Coach Station, Southampton (United Kingdom) at 19/06/2026 17:20:00 to Coach Station, Cardiff (United Kingdom) arriving at 19/06/2026 22:40:00. 50 Economy ticket for £33 per person are available. Travel duration is 5h 20m
Cheapest Buses Friday
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FlixBus6h 40m004:05SouthamptonCoach Station10:45CardiffKingsway Coach Stop0EconomyA Bus from FlixBus goes from Coach Station, Southampton (United Kingdom) at 20/06/2026 04:05:00 to Kingsway Coach Stop, Cardiff (United Kingdom) arriving at 20/06/2026 10:45:00. 50 Economy ticket for £19 per person are available. Travel duration is 6h 40m
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FlixBus6h 25m004:20SouthamptonUniversity10:45CardiffKingsway Coach Stop0EconomyA Bus from FlixBus goes from University, Southampton (United Kingdom) at 20/06/2026 04:20:00 to Kingsway Coach Stop, Cardiff (United Kingdom) arriving at 20/06/2026 10:45:00. 50 Economy ticket for £19 per person are available. Travel duration is 6h 25m
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FlixBus6h 30m016:45SouthamptonCoach Station23:15CardiffKingsway Coach Stop0EconomyA Bus from FlixBus goes from Coach Station, Southampton (United Kingdom) at 20/06/2026 16:45:00 to Kingsway Coach Stop, Cardiff (United Kingdom) arriving at 20/06/2026 23:15:00. 50 Economy ticket for £20 per person are available. Travel duration is 6h 30m
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National Express5h 10m020:30SouthamptonCoach Station01:40CardiffCoach Station0EconomyA Bus from National Express goes from Coach Station, Southampton (United Kingdom) at 20/06/2026 20:30:00 to Coach Station, Cardiff (United Kingdom) arriving at 21/06/2026 01:40:00. 50 Economy ticket for £32 per person are available. Travel duration is 5h 10m
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National Express5h 10m017:30SouthamptonCoach Station22:40CardiffCoach Station0EconomyA Bus from National Express goes from Coach Station, Southampton (United Kingdom) at 20/06/2026 17:30:00 to Coach Station, Cardiff (United Kingdom) arriving at 20/06/2026 22:40:00. 50 Economy ticket for £36 per person are available. Travel duration is 5h 10m
Cheapest Buses Saturday
What are the fastest trips from Southampton to Cardiff?
You can get to Cardiff from Southampton in just 2h 21m with a Train from CrossCountry. 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 10m020:30SouthamptonCoach Station01:40CardiffCoach Station0EconomyA Bus from National Express goes from Coach Station, Southampton (United Kingdom) at 14/06/2026 20:30:00 to Coach Station, Cardiff (United Kingdom) arriving at 15/06/2026 01:40:00. 50 Economy ticket for £50 per person are available. Travel duration is 5h 10m
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FlixBus5h 45m006:25SouthamptonUniversity12:10CardiffKingsway Coach Stop0EconomyA Bus from FlixBus goes from University, Southampton (United Kingdom) at 14/06/2026 06:25:00 to Kingsway Coach Stop, Cardiff (United Kingdom) arriving at 14/06/2026 12:10:00. 50 Economy ticket for £19 per person are available. Travel duration is 5h 45m
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FlixBus6h 10m017:05SouthamptonUniversity23:15CardiffKingsway Coach Stop0EconomyA Bus from FlixBus goes from University, Southampton (United Kingdom) at 14/06/2026 17:05:00 to Kingsway Coach Stop, Cardiff (United Kingdom) arriving at 14/06/2026 23:15:00. 50 Economy ticket for £18 per person are available. Travel duration is 6h 10m
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National Express6h 15m015:45SouthamptonCoach Station22:00CardiffCoach Station0EconomyA Bus from National Express goes from Coach Station, Southampton (United Kingdom) at 14/06/2026 15:45:00 to Coach Station, Cardiff (United Kingdom) arriving at 14/06/2026 22:00:00. 50 Economy ticket for £59 per person are available. Travel duration is 6h 15m
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FlixBus6h 30m016:45SouthamptonCoach Station23:15CardiffKingsway Coach Stop0EconomyA Bus from FlixBus goes from Coach Station, Southampton (United Kingdom) at 14/06/2026 16:45:00 to Kingsway Coach Stop, Cardiff (United Kingdom) arriving at 14/06/2026 23:15:00. 50 Economy ticket for £18 per person are available. Travel duration is 6h 30m
Fastest Buses Sunday
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CrossCountry2h 21m011:15SouthamptonCentral Station13:36CardiffCentral Station0EconomyA Train from CrossCountry goes from Central Station, Southampton (United Kingdom) at 15/06/2026 11:15:00 to Central Station, Cardiff (United Kingdom) arriving at 15/06/2026 13:36:00. 50 Economy ticket for £110 per person are available. Travel duration is 2h 21m
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Great Western Railway (GWR)2h 42m008:10SouthamptonCentral Station10:52CardiffCentral Station0EconomyA Train from Great Western Railway (GWR) goes from Central Station, Southampton (United Kingdom) at 15/06/2026 08:10:00 to Central Station, Cardiff (United Kingdom) arriving at 15/06/2026 10:52:00. 50 Economy ticket for £61 per person are available. Travel duration is 2h 42m
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CrossCountry3h 1m010:15SouthamptonCentral Station13:16CardiffCentral Station0EconomyA Train from CrossCountry goes from Central Station, Southampton (United Kingdom) at 15/06/2026 10:15:00 to Central Station, Cardiff (United Kingdom) arriving at 15/06/2026 13:16:00. 50 Economy ticket for £110 per person are available. Travel duration is 3h 1m
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South Western Railway3h 7m009:30SouthamptonCentral Station12:37CardiffCentral Station0EconomyA Train from South Western Railway goes from Central Station, Southampton (United Kingdom) at 15/06/2026 09:30:00 to Central Station, Cardiff (United Kingdom) arriving at 15/06/2026 12:37:00. 50 Economy ticket for £110 per person are available. Travel duration is 3h 7m
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Great Western Railway (GWR)3h 17m008:23SouthamptonCentral Station11:40CardiffCentral Station0EconomyA Train from Great Western Railway (GWR) goes from Central Station, Southampton (United Kingdom) at 15/06/2026 08:23:00 to Central Station, Cardiff (United Kingdom) arriving at 15/06/2026 11:40:00. 50 Economy ticket for £61 per person are available. Travel duration is 3h 17m
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National Express6h 0m006:25SouthamptonCoach Station12:25CardiffCoach Station0EconomyA Bus from National Express goes from Coach Station, Southampton (United Kingdom) at 15/06/2026 06:25:00 to Coach Station, Cardiff (United Kingdom) arriving at 15/06/2026 12:25:00. 50 Economy ticket for £50 per person are available. Travel duration is 6h 0m
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FlixBus6h 10m017:05SouthamptonUniversity23:15CardiffKingsway Coach Stop0EconomyA Bus from FlixBus goes from University, Southampton (United Kingdom) at 15/06/2026 17:05:00 to Kingsway Coach Stop, Cardiff (United Kingdom) arriving at 15/06/2026 23:15:00. 50 Economy ticket for £26 per person are available. Travel duration is 6h 10m
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FlixBus6h 30m016:45SouthamptonCoach Station23:15CardiffKingsway Coach Stop0EconomyA Bus from FlixBus goes from Coach Station, Southampton (United Kingdom) at 15/06/2026 16:45:00 to Kingsway Coach Stop, Cardiff (United Kingdom) arriving at 15/06/2026 23:15:00. 50 Economy ticket for £26 per person are available. Travel duration is 6h 30m
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National Express6h 50m013:15SouthamptonCoach Station20:05CardiffCoach Station0EconomyA Bus from National Express goes from Coach Station, Southampton (United Kingdom) at 15/06/2026 13:15:00 to Coach Station, Cardiff (United Kingdom) arriving at 15/06/2026 20:05:00. 50 Economy ticket for £50 per person are available. Travel duration is 6h 50m
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FlixBus7h 30m014:45SouthamptonCoach Station22:15CardiffKingsway Coach Stop0EconomyA Bus from FlixBus goes from Coach Station, Southampton (United Kingdom) at 15/06/2026 14:45:00 to Kingsway Coach Stop, Cardiff (United Kingdom) arriving at 15/06/2026 22:15:00. 50 Economy ticket for £29 per person are available. Travel duration is 7h 30m
Fastest Trains Monday
Fastest Buses Monday
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Great Western Railway (GWR)2h 35m009:11SouthamptonCentral Station11:46CardiffCentral Station0EconomyA Train from Great Western Railway (GWR) goes from Central Station, Southampton (United Kingdom) at 16/06/2026 09:11:00 to Central Station, Cardiff (United Kingdom) arriving at 16/06/2026 11:46:00. 50 Economy ticket for £34 per person are available. Travel duration is 2h 35m
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CrossCountry2h 55m009:15SouthamptonCentral Station12:10CardiffCentral Station0EconomyA Train from CrossCountry goes from Central Station, Southampton (United Kingdom) at 16/06/2026 09:15:00 to Central Station, Cardiff (United Kingdom) arriving at 16/06/2026 12:10:00. 50 Economy ticket for £147 per person are available. Travel duration is 2h 55m
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Great Western Railway (GWR)2h 59m006:47SouthamptonCentral Station09:46CardiffCentral Station0EconomyA Train from Great Western Railway (GWR) goes from Central Station, Southampton (United Kingdom) at 16/06/2026 06:47:00 to Central Station, Cardiff (United Kingdom) arriving at 16/06/2026 09:46:00. 50 Economy ticket for £40 per person are available. Travel duration is 2h 59m
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South Western Railway3h 13m005:55SouthamptonCentral Station09:08CardiffCentral Station0EconomyA Train from South Western Railway goes from Central Station, Southampton (United Kingdom) at 16/06/2026 05:55:00 to Central Station, Cardiff (United Kingdom) arriving at 16/06/2026 09:08:00. 50 Economy ticket for £159 per person are available. Travel duration is 3h 13m
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CrossCountry3h 24m005:15SouthamptonCentral Station08:39CardiffCentral Station0EconomyA Train from CrossCountry goes from Central Station, Southampton (United Kingdom) at 16/06/2026 05:15:00 to Central Station, Cardiff (United Kingdom) arriving at 16/06/2026 08:39:00. 50 Economy ticket for £159 per person are available. Travel duration is 3h 24m
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National Express5h 10m020:30SouthamptonCoach Station01:40CardiffCoach Station0EconomyA Bus from National Express goes from Coach Station, Southampton (United Kingdom) at 16/06/2026 20:30:00 to Coach Station, Cardiff (United Kingdom) arriving at 17/06/2026 01:40:00. 50 Economy ticket for £36 per person are available. Travel duration is 5h 10m
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FlixBus6h 25m004:20SouthamptonUniversity10:45CardiffKingsway Coach Stop0EconomyA Bus from FlixBus goes from University, Southampton (United Kingdom) at 16/06/2026 04:20:00 to Kingsway Coach Stop, Cardiff (United Kingdom) arriving at 16/06/2026 10:45:00. 50 Economy ticket for £20 per person are available. Travel duration is 6h 25m
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National Express6h 35m013:30SouthamptonCoach Station20:05CardiffCoach Station0EconomyA Bus from National Express goes from Coach Station, Southampton (United Kingdom) at 16/06/2026 13:30:00 to Coach Station, Cardiff (United Kingdom) arriving at 16/06/2026 20:05:00. 50 Economy ticket for £40 per person are available. Travel duration is 6h 35m
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FlixBus6h 40m004:05SouthamptonCoach Station10:45CardiffKingsway Coach Stop0EconomyA Bus from FlixBus goes from Coach Station, Southampton (United Kingdom) at 16/06/2026 04:05:00 to Kingsway Coach Stop, Cardiff (United Kingdom) arriving at 16/06/2026 10:45:00. 50 Economy ticket for £20 per person are available. Travel duration is 6h 40m
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FlixBus7h 50m010:45SouthamptonCoach Station18:35CardiffKingsway Coach Stop0EconomyA Bus from FlixBus goes from Coach Station, Southampton (United Kingdom) at 16/06/2026 10:45:00 to Kingsway Coach Stop, Cardiff (United Kingdom) arriving at 16/06/2026 18:35:00. 50 Economy ticket for £20 per person are available. Travel duration is 7h 50m
Fastest Trains Tuesday
Fastest Buses Tuesday
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National Express5h 10m020:30SouthamptonCoach Station01:40CardiffCoach Station0EconomyA Bus from National Express goes from Coach Station, Southampton (United Kingdom) at 17/06/2026 20:30:00 to Coach Station, Cardiff (United Kingdom) arriving at 18/06/2026 01:40:00. 50 Economy ticket for £33 per person are available. Travel duration is 5h 10m
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FlixBus6h 25m004:20SouthamptonUniversity10:45CardiffKingsway Coach Stop0EconomyA Bus from FlixBus goes from University, Southampton (United Kingdom) at 17/06/2026 04:20:00 to Kingsway Coach Stop, Cardiff (United Kingdom) arriving at 17/06/2026 10:45:00. 50 Economy ticket for £17 per person are available. Travel duration is 6h 25m
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FlixBus6h 40m004:05SouthamptonCoach Station10:45CardiffKingsway Coach Stop0EconomyA Bus from FlixBus goes from Coach Station, Southampton (United Kingdom) at 17/06/2026 04:05:00 to Kingsway Coach Stop, Cardiff (United Kingdom) arriving at 17/06/2026 10:45:00. 50 Economy ticket for £17 per person are available. Travel duration is 6h 40m
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National Express6h 45m004:15SouthamptonCoach Station11:00CardiffCoach Station0EconomyA Bus from National Express goes from Coach Station, Southampton (United Kingdom) at 17/06/2026 04:15:00 to Coach Station, Cardiff (United Kingdom) arriving at 17/06/2026 11:00:00. 50 Economy ticket for £34 per person are available. Travel duration is 6h 45m
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FlixBus7h 30m014:45SouthamptonCoach Station22:15CardiffKingsway Coach Stop0EconomyA Bus from FlixBus goes from Coach Station, Southampton (United Kingdom) at 17/06/2026 14:45:00 to Kingsway Coach Stop, Cardiff (United Kingdom) arriving at 17/06/2026 22:15:00. 50 Economy ticket for £17 per person are available. Travel duration is 7h 30m
Fastest Buses Wednesday
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National Express5h 10m020:30SouthamptonCoach Station01:40CardiffCoach Station0EconomyA Bus from National Express goes from Coach Station, Southampton (United Kingdom) at 18/06/2026 20:30:00 to Coach Station, Cardiff (United Kingdom) arriving at 19/06/2026 01:40:00. 50 Economy ticket for £30 per person are available. Travel duration is 5h 10m
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National Express6h 0m015:00SouthamptonCoach Station21:00CardiffCoach Station0EconomyA Bus from National Express goes from Coach Station, Southampton (United Kingdom) at 18/06/2026 15:00:00 to Coach Station, Cardiff (United Kingdom) arriving at 18/06/2026 21:00:00. 50 Economy ticket for £37 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 18/06/2026 16:30:00 to Coach Station, Cardiff (United Kingdom) arriving at 18/06/2026 22:40:00. 50 Economy ticket for £30 per person are available. Travel duration is 6h 10m
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National Express6h 35m013:30SouthamptonCoach Station20:05CardiffCoach Station0EconomyA Bus from National Express goes from Coach Station, Southampton (United Kingdom) at 18/06/2026 13:30:00 to Coach Station, Cardiff (United Kingdom) arriving at 18/06/2026 20:05:00. 50 Economy ticket for £37 per person are available. Travel duration is 6h 35m
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National Express6h 45m004:15SouthamptonCoach Station11:00CardiffCoach Station0EconomyA Bus from National Express goes from Coach Station, Southampton (United Kingdom) at 18/06/2026 04:15:00 to Coach Station, Cardiff (United Kingdom) arriving at 18/06/2026 11:00:00. 50 Economy ticket for £33 per person are available. Travel duration is 6h 45m
Fastest Buses Thursday
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National Express5h 20m017:20SouthamptonCoach Station22:40CardiffCoach Station0EconomyA Bus from National Express goes from Coach Station, Southampton (United Kingdom) at 19/06/2026 17:20:00 to Coach Station, Cardiff (United Kingdom) arriving at 19/06/2026 22:40:00. 50 Economy ticket for £33 per person are available. Travel duration is 5h 20m
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FlixBus6h 25m004:20SouthamptonUniversity10:45CardiffKingsway Coach Stop0EconomyA Bus from FlixBus goes from University, Southampton (United Kingdom) at 19/06/2026 04:20:00 to Kingsway Coach Stop, Cardiff (United Kingdom) arriving at 19/06/2026 10:45:00. 50 Economy ticket for £18 per person are available. Travel duration is 6h 25m
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National Express6h 25m012:15SouthamptonCoach Station18:40CardiffCoach Station0EconomyA Bus from National Express goes from Coach Station, Southampton (United Kingdom) at 19/06/2026 12:15:00 to Coach Station, Cardiff (United Kingdom) arriving at 19/06/2026 18:40:00. 50 Economy ticket for £33 per person are available. Travel duration is 6h 25m
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FlixBus6h 35m014:45SouthamptonCoach Station21:20CardiffKingsway Coach Stop0EconomyA Bus from FlixBus goes from Coach Station, Southampton (United Kingdom) at 19/06/2026 14:45:00 to Kingsway Coach Stop, Cardiff (United Kingdom) arriving at 19/06/2026 21:20:00. 50 Economy ticket for £18 per person are available. Travel duration is 6h 35m
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FlixBus6h 40m004:05SouthamptonCoach Station10:45CardiffKingsway Coach Stop0EconomyA Bus from FlixBus goes from Coach Station, Southampton (United Kingdom) at 19/06/2026 04:05:00 to Kingsway Coach Stop, Cardiff (United Kingdom) arriving at 19/06/2026 10:45:00. 50 Economy ticket for £18 per person are available. Travel duration is 6h 40m
Fastest Buses Friday
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National Express5h 10m020:30SouthamptonCoach Station01:40CardiffCoach Station0EconomyA Bus from National Express goes from Coach Station, Southampton (United Kingdom) at 20/06/2026 20:30:00 to Coach Station, Cardiff (United Kingdom) arriving at 21/06/2026 01:40:00. 50 Economy ticket for £32 per person are available. Travel duration is 5h 10m
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National Express5h 10m017:30SouthamptonCoach Station22:40CardiffCoach Station0EconomyA Bus from National Express goes from Coach Station, Southampton (United Kingdom) at 20/06/2026 17:30:00 to Coach Station, Cardiff (United Kingdom) arriving at 20/06/2026 22:40:00. 50 Economy ticket for £36 per person are available. Travel duration is 5h 10m
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FlixBus6h 25m004:20SouthamptonUniversity10:45CardiffKingsway Coach Stop0EconomyA Bus from FlixBus goes from University, Southampton (United Kingdom) at 20/06/2026 04:20:00 to Kingsway Coach Stop, Cardiff (United Kingdom) arriving at 20/06/2026 10:45:00. 50 Economy ticket for £19 per person are available. Travel duration is 6h 25m
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FlixBus6h 30m016:45SouthamptonCoach Station23:15CardiffKingsway Coach Stop0EconomyA Bus from FlixBus goes from Coach Station, Southampton (United Kingdom) at 20/06/2026 16:45:00 to Kingsway Coach Stop, Cardiff (United Kingdom) arriving at 20/06/2026 23:15:00. 50 Economy ticket for £20 per person are available. Travel duration is 6h 30m
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FlixBus6h 40m004:05SouthamptonCoach Station10:45CardiffKingsway Coach Stop0EconomyA Bus from FlixBus goes from Coach Station, Southampton (United Kingdom) at 20/06/2026 04:05:00 to Kingsway Coach Stop, Cardiff (United Kingdom) arriving at 20/06/2026 10:45:00. 50 Economy ticket for £19 per person are available. Travel duration is 6h 40m
Fastest Buses Saturday
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 Coach Station, Swanwick Train Station or Central Station, while in Cardiff you will be arriving at Central Station, Penarth Train Station or Dingle Road 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 6 connections between 5 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 Southampton and Cardiff, you can pay as low as £17 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 CrossCountry: you will get to Cardiff in just 2h 21m.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 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 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 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), CrossCountry and South Western Railway
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 6 connections between Train and Bus, 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 £17 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 21m with a Train from CrossCountry.
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!
