Travel Information
Compare train and coach for Carmarthen to Southampton
Omio recommends booking the train as it is the most popular option from Carmarthen to Southampton among Omio's users. If you are prioritising price take the coach with prices starting from £36. For those with little time consider booking a train which can get you there in 4h 34m. The ticket price range depends on the travel mode: a coach costs an average of £36, and a train costs an average of £72.
Distance: 227 km
Compare bus with
| Coach | Most popular Train |
|---|---|
£37 Average Price Cheapest | £79 Average Price |
8h 55m Average total duration 8h 25m Onboard + 30m Additional time* | 5h 4m Average total duration Fastest 4h 34m Onboard + 30m Additional time* |
![]() Most popular bus company | ![]() Most popular train company |
Direct Options | Direct Options |
Compare prices and tickets Carmarthen to Southampton by train or coach
Compare train and coach prices over the next three weeks. See the best deals at a glance, find the lowest fares, and choose the option that fits your budget.
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Why should you book Carmarthen to Southampton coaches with Omio?
Why book with Omio vs National Express?
- Designed for International Travelers: Omio is in your language including 24/7 customer service and offers multiple payment options, including PayPal, credit cards, and bank transfer, in your preferred currency.
- Compare all your options: Omio allows you to compare National Express with all available travel options, which are train and bus to ensure you get the best deal for traveling from Carmarthen to Southampton.
Why book with Omio over Wanderu?
- Multiple modes of transport: Omio allows you to compare travel options including train and bus to find the ideal travel option from Carmarthen to Southampton.
Journey information
Overview: Bus from Carmarthen to Southampton
Buses from Carmarthen to Southampton run on average 4 times per day, taking around 8h 25m. Cheap bus tickets for this journey start at £36 if you book in advance.
The earliest coach runs at 04:00, the last at 11:56. The fastest coach covers the 227 km distance in 10h 5m.
Distance 227 km |
Average bus duration 8h 25m |
Cheapest ticket price £36 |
Buses per day 4 |
Fastest bus 10h 5m |
First bus 4:00 |
Last bus 11:56 |
Cheapest Month Jul |
Cheapest Day Tue |
High Season Apr - Jun |
Low Season Oct - Dec |
Bus providers: National Express from Carmarthen to SouthamptonYou can travel by bus between Carmarthen to Southampton with National Express for as low as £36. When you search for schedules and tickets, Omio will show you the best journey
National Express
FAQs: Carmarthen to Southampton coach
Find answers to the most common questions about traveling from Carmarthen to Southampton by coach. From journey times and ticket prices to direct connections, first and last departures, and even whether the route is scenic, our FAQs cover everything you need to plan your trip. Whether you’re looking for the fastest coach, the cheapest option, or tips for making the most of your visit at Southampton, this guide helps you travel smarter and with confidence.

- National Express
- Assistance
- Priority seating
- Accessible toilets.
- National Express
- You can cancel your ticket up to 24 hours before departure for a refund minus a cancellation fee. Changes can be up to 24 hours before departure for a fee.
- National Express
- Two medium-sized suitcases up to 20kg each and one small piece of hand luggage.
- National Express
- 10€ per additional bag.
popular bus stations
Important Stations and Airports in Carmarthen and Southampton
Most Carmarthen to Southampton buses use the Carmarthen, Lammas Street (Rose and Crown Hotel) to Southampton, Coach Station station pair, with some services arriving at Southampton, University. Use this guide to compare Carmarthen and Southampton bus stations on this route, check city-centre transport, alongside checking practicalities like bus station facilities and services.
Which Carmarthen station do buses to Southampton leave from?
Getting to Carmarthen, Lammas Street (Rose and Crown Hotel) from Carmarthen city centre
Carmarthen, Lammas Street (Rose and Crown Hotel) bus station facilities and services
Carmarthen, Lammas Street (Rose and Crown Hotel) has practical services for this route, including Accessibility.
Accessibility
Accessibility facilities are available at Carmarthen, Lammas Street (Rose and Crown Hotel): The place has an entrance that is wheelchair-accessible.
Which Southampton station do buses from Carmarthen arrive at?
Getting to Southampton, Coach Station from Southampton city centre
Southampton, Coach Station bus station facilities and services
Southampton, Coach Station has practical services for this route, including Wifi, Parking, Dining, ATM, Taxis, Accessibility, WC and Ticket Office.
Food and drink
Food options include: Café Express (in the station), Sandwich Bar (in the station).
Wi-Fi and ATMs
Free Wi-Fi. ATMs are located near the entrance for cash withdrawals.
Tickets and information
Ticket office support is available at Southampton, Coach Station.
Parking, taxis and toilets
Available at Southampton, Coach Station: Parking, Taxis, WC.
Accessibility
Accessibility facilities are available at Southampton, Coach Station: Elevators, ramps.
Getting to Southampton, University from Southampton city centre
Most popular bus connections from Carmarthen
More options for your journey from Carmarthen to Southampton
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