- Must visit
Carmarthenshire Museum
The county museum in a former bishop’s palace, covering Roman finds, local history and changing displays in an atmospheric setting.
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Travel Information
Compare train for Southampton to Carmarthen
Omio recommends booking the train as it is the most popular option from Southampton to Carmarthen among Omio's users. If you are prioritising price, take the train, with an average ticket price of £149 For those with little time, consider booking a train, which has an average total journey time of 4h 52m. Average ticket prices depend on the travel mode: a train costs an average of £149, while a train costs an average of £149.
Distance: 227 km
Compare train with
Most popular Train | Driving |
|---|---|
£149 Average Price Cheapest | £48 Average Price (fuel + tolls) |
4h 52m Average total duration Fastest 4h 22m Onboard + 30m Additional time* | 3h 29m Average total duration (door-to-door) |
 Most popular train company | Your own car or car rental |
Direct Options | Direct Options |
The cheapest way to travel from Southampton to Carmarthen is a train with an average price of £149.
The fastest way to travel from Southampton to Carmarthen is by train with an average journey time of 4h 22m.
Other travel options to Carmarthen take longer:
Coach takes on average 8h 30m.
Yes, you can take a train between Southampton and Carmarthen.
Compare prices and tickets Southampton to Carmarthen by train
Compare train 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 Southampton to Carmarthen coaches with Omio?
National Express operates all coaches services from Southampton to Carmarthen.
Omio is an official ticket reseller for all your travel options from Southampton to Carmarthen.
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.
Journey information
Overview: Bus from Southampton to Carmarthen
United KingdomUnited Kingdom
Take a bus from Southampton to Carmarthen and enjoy the approximately 227 km long journey. Find schedules and pricing options for a convenient and affordable trip.
The earliest coach runs at 04:00, the last at 14:15.
Fares are the lowest economy prices found on Omio. Early booking often means lower prices. Prices change daily and are subject to availability. Discount cards, coach trips, and booking fees are not included.
Price information
Cheapest alternative travel mode
Train from £119
Distance 227 km |
Average bus duration 8h 30m |
Buses per day 2 |
First bus 4:00 |
Last bus 14:15 |
Cheapest Month Mar |
Cheapest Day Mon |
High Season Jan - Mar |
Low Season Jul - Sept |
Busiest Day Thu |
Least Busy Day Thu |
Fares are the lowest economy prices found on Omio. Early booking often means lower prices. Prices change daily and are subject to availability. Discount cards, coach trips, and booking fees are not included.
Price information
Cheapest alternative travel mode
Train from £119
Bus providers: National Express from Southampton to CarmarthenYou can travel by bus between Southampton to Carmarthen with National Express for as low as £119. When you search for schedules and tickets, Omio will show you the best journey
National Express
About
National Express is the UK’s leading long-distance coach company, operating over 550 services per day and serving more than 900 destinations nationwide. It also runs frequent services to major UK airports — including Heathrow, Gatwick, Stansted, Luton, and Bristol — 24 hours a day. All National Express coaches are air-conditioned and offer free Wi-Fi and onboard entertainment. Most vehicles are equipped with seat belts and power outlets at every seat, allowing you to charge your phone or laptop during your journey. Ticket options include Restricted Fare, Standard Fare, and Fully Flexible Fare, with the latter providing maximum flexibility for cancellations or changes.
Luggage & cancellation policy
Average National Express Duration
10h 15m
Cheapest National Express Price
£34
National Express frequency
2 a day
Luggage included
Two medium-sized suitcases up to 20kg each and one small piece of hand luggage.
Additional luggage
10€ per additional bag.
Cancellation Policy
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.
Amenities on board the bus
Wifi
Food sold onboard
Seat reservation
Toilets
USB plugs
Accessibility
Assistance; Priority seating; Accessible toilets.
Bikes
Folding Bikes are allowed; non-folding bikes are not allowed.
Complete guide to Carmarthen
Things to do in Carmarthen
Discover the best of Carmarthen — top attractions, local food, transport tips, budget advice, and currency essentials. Plan your perfect Carmarthen trip today.
- Recommended
Carmarthen Roman Amphitheatre Museum
Small museum on the old Roman amphitheatre site, introducing Roman Moridunum and the archaeology of early Carmarthen.
- Recommended
Dylan Thomas Boathouse and Writing Shed
Museum telling the story of Dylan Thomas and his family in a restored chapel, with exhibits on writing, broadcasting and local roots.
- Must visit
Carmarthen Park
Large public park with formal gardens, play areas, riverside walks and a hilltop monument, ideal for a relaxed break near the centre.
- Recommended
King Street
Historic market quarter with independent shops, old arcades and everyday town life, good for browsing and seeing central Carmarthen on foot.
- Recommended
Parc y Belyn
Riverside green space and woodland paths beside the Towy, popular for walking, wildlife watching and easy access from the town centre.
- Gluten-free
Cawl
Traditional Welsh broth made with lamb or beef, root vegetables and leeks. A staple of rural west Wales, valued for its hearty, slow-cooked flavour.
- Vegetarian
Bara Brith
A rich fruit loaf or tea bread with dried fruit and spices, commonly sliced and served with butter. Long associated with Welsh baking and teatime.
- Vegetarian
Welsh Cakes
Small oatcakes cooked on a bakestone, often split and toasted with butter or cheese. A traditional Welsh breakfast and teatime bread.
The Warren
Popular casual restaurant known for burgers, brunch and modern comfort food in a lively town-centre setting.
The Corries
Stylish restaurant and bar serving modern British dishes, cocktails and varied seasonal plates in an elegant atmosphere.
The Old Moathouse
Well-known traditional pub with classic Welsh and British meals, local ales and a relaxed historic setting.
Pound sterling (£)
Moderate for the UK. Hotels and dining are usually cheaper than in Cardiff or London, while local transport and everyday costs stay fairly manageable for visitors.
Average meal costs
- Budget
- £8-12 for a budget meal.
- Mid-range
- £18-30 per person for a mid-range meal.
- Fine dining
- £45+ per person for fine dining.
- Coffee
- £2.80-4 for a coffee.
Tipping culture
Tipping is modest. In restaurants, 10-12.5% is appreciated if service is not included. Round up taxi fares, and tipping in cafés is optional.
TrawsCymru
Get the appOfficial public transport app
Prices
- Single ticket
- £4
- Day pass
- £7
To the city centre
Carmarthen, Lammas Street (Rose and Crown Hotel) -> Carmarthen Bus Station
- Distance
- 400 m
- Travel time
- 5 min
- TrawsCymru adult day tickets are £7 from 1 February 2026 and cover multiple listed TrawsCymru routes, including T1C between Carmarthen and Aberystwyth.
- TrawsCymru buses accept contactless payment on board. For short trips in central Carmarthen, walking to Carmarthen Bus Station is usually quickest.
FAQs: Southampton to Carmarthen coach
Find answers to the most common questions about traveling from Southampton to Carmarthen 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 Carmarthen, this guide helps you travel smarter and with confidence.
The earliest coach from Southampton to Carmarthen leaves at 4:00. Plan your trip with the Journey Planner from Omio.
The latest coach from Southampton to Carmarthen leaves at 14:15.
There are 2 coaches a day from Southampton to Carmarthen which require at least one change with National Express. Schedules can vary on holidays or weekends with fewer coaches.
When taking a coach from Southampton to Carmarthen, you can count on National Express for the best way to get you to Carmarthen. You can also check all possible coach companies who offer a service between Southampton and Carmarthen and compare the amenities they offer before buying a coach ticket.
When departing from Southampton , you have various coach station options to start your route from including Southampton, Coach Station, Southampton, University . When arriving in Carmarthen , you can end your route in coach stations like Carmarthen, Lammas Street (Rose and Crown Hotel).Passengers board the coach most frequently from Southampton, Coach Station, which is located around away from the city centre, and they get off the coach at Carmarthen, Lammas Street (Rose and Crown Hotel), located 0 away from the city centre.
The cheapest month for a coach from Southampton to Carmarthen is March.
Yes, you can take a train between Southampton and Carmarthen.
Yes, the following accessibility options are available when taking the coach from Southampton to Carmarthen:
- National Express
- Assistance
- Priority seating
- Accessible toilets.
Yes, there are bathrooms on board the coach from Southampton to Carmarthen for coach company National Express.
Whether you can cancel your coach ticket from Southampton to Carmarthen depends on the coach companies:
- 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.
Yes, bikes are allowed on board the coach with coach company National Express.
Tickets are often cheaper when booked early. Traveling during off-peak hours or on weekdays can help you save money. Sort results by price to quickly identify the most affordable options. Check for promotions or discounts available on our website and app.
No, there is no food available to purchase on board the coach from Southampton to Carmarthen.
Yes, the following luggage options are included when booking a coach ticket from Southampton to Carmarthen:
- National Express
- Two medium-sized suitcases up to 20kg each and one small piece of hand luggage.
Yes, the following additional luggage options are available when booking a coach ticket from Southampton to Carmarthen:
- National Express
- 10€ per additional bag.
Unfortunately, pets are not allowed on the coach from Southampton to Carmarthen.
You can reserve your seat on the coach from Southampton to Carmarthen with the following coach company: National Express
Yes, there are USB plugs on board the coach from Southampton to Carmarthen with the following coach company: National Express.
Yes, there is Wifi on board the coach from Southampton to Carmarthen with the following coach company: National Express.
popular bus stations
Important Stations and Airports in Southampton and Carmarthen
Most Southampton to Carmarthen buses use the Southampton, Coach Station to Carmarthen, Lammas Street (Rose and Crown Hotel) station pair. Use this guide to compare Southampton and Carmarthen bus stations on this route, check city-centre transport, alongside checking practicalities like bus station facilities and services.
Departure bus stations in Southampton
Arrival bus stations in Carmarthen
Which Southampton station do buses to Carmarthen leave from?
Buses from Southampton to Carmarthen leave from Southampton, Coach Station. The station is from Southampton city centre at Harbour Parade, Southampton SO15 1BA, United Kingdom.
Southampton, Coach StationHarbour Parade, Southampton SO15 1BA, United Kingdom
City-centre transport
Getting to Southampton, Coach Station from Southampton city centre
BusX4, X5 · 5m · £2 · every ~20 min
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.
Southampton, UniversityUniversity Rd, Southampton SO17 1BJ, UK
City-centre transport
Getting to Southampton, University from Southampton city centre
Southampton, University is 3 km from Southampton city centre. Public transport options include:
BusU2b, U2 · 11m · £2 · every ~6 min
U1a, U1n, U1e · 25m · £2 · every ~37 min
U1a, U1n, U1e · 29m · £2 · every ~37 min
Southampton, University bus station facilities and services
Southampton, University has practical services for this route, including Wifi, Parking, ATM, Taxis, Accessibility, WC, Shower and Ticket Office.
Wi-Fi and ATMs
Wi-Fi is available at Southampton, University. ATMs are available at Southampton, University.
Tickets and information
Ticket office support is available at Southampton, University.
Parking, taxis and toilets
Available at Southampton, University: Parking, Taxis, WC.
Accessibility
Accessibility facilities are available at Southampton, University: Basic accessibility features are available for passengers.
Which Carmarthen station do buses from Southampton arrive at?
Buses from Southampton to Carmarthen arrive at Carmarthen, Lammas Street (Rose and Crown Hotel). Carmarthen, Lammas Street (Rose and Crown Hotel) is from Carmarthen city centre.
Carmarthen, Lammas Street (Rose and Crown Hotel)2-5 Guildhall Square, Carmarthen SA31 1NP, UK
City-centre transport
Getting to Carmarthen, Lammas Street (Rose and Crown Hotel) from Carmarthen city centre
BusT1x, 322, T1, T1a · 5m · £0.90 · every ~4 min
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.
Most popular bus connections from Southampton
More options for your journey from Southampton to Carmarthen
Here are some other resources that might have the information you need
Most popular buses to and from Carmarthen and Southampton
Most popular bus connections
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