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Travel Information
Compare coach and 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 coach with prices starting from £34. For those with little time consider booking a train which can get you there in 4h 24m. The ticket price range depends on the travel mode: a coach costs an average of £34, and a train costs an average of £72.
Distance: 227 km
Compare bus with
| Coach | Most popular Train |
|---|---|
£41 Average Price Cheapest | £81 Average Price |
8h 35m Average total duration 8h 5m Onboard + 30m Additional time* | 4h 54m Average total duration Fastest 4h 24m Onboard + 30m Additional time* |
 Most popular bus company |  Most popular train company |
Direct Options | Direct Options |
Compare prices and tickets Southampton to Carmarthen by coach or train
Compare coach and 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.
- Compare all your options: Omio allows you to compare National Express with all available travel options, which are bus and train to ensure you get the best deal for traveling from Southampton to Carmarthen.
Why book with Omio over Wanderu?
- Multiple modes of transport: Omio allows you to compare travel options including bus and train to find the ideal travel option from Southampton to Carmarthen.
Journey information
Overview: Bus from Southampton to Carmarthen
United KingdomUnited Kingdom
Buses from Southampton to Carmarthen run on average 2 times per day, taking around 8h 5m. Cheap bus tickets for this journey start at £34 if you book in advance.
The earliest coach runs at 04:00, the last at 14:15. The fastest coach covers the 227 km distance in 10h 15m.
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
Distance 227 km |
Average bus duration 8h 5m |
Cheapest ticket price £34 |
Buses per day 2 |
Fastest bus 10h 15m |
First bus 4:00 |
Last bus 14:15 |
Cheapest Month Mar |
Cheapest Day Mon |
High Season Jan - Mar |
Low Season Apr - Jun |
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
Bus providers: National Express from Southampton to CarmarthenYou can travel by bus between Southampton to Carmarthen with National Express for as low as £34. 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 Duration
10h 15m
Cheapest 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.
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.
Cheap coach tickets from Southampton to Carmarthen can start from as little as £34 when you book in advance. The average coach ticket price for Southampton to Carmarthen is £41; however, prices vary depending on the time of day and class and they tend to be more expensive on the day.
The average journey time by coach from Southampton to Carmarthen is 10h 15m to travel the 227 km long route. Journey times can vary on weekends and holidays, so use our Journey Planner to search for a specific date.
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 0 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.
A trip to Carmarthen from Southampton is worth doing but not as a day trip with a journey time of 10h 15m each way. Check with Omio app the best way to travel.
The cheapest month for a coach from Southampton to Carmarthen is March.
It's helpful to compare your options as there are 2 ways to travel between Southampton and Carmarthen including taking a coach and train.
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
Southampton
Carmarthen
The major coach station for departures in Southampton is Southampton, Coach Station. Find all the information you need to know about services, amenities and connections at Southampton, Coach Station for your trip from Southampton to Carmarthen.
Amenities at bus station
Wifi
Parking
Dining
ATM
Taxis
Accessibility
WC
Ticket Officeinformation
Ticket Office Hours
- 06:00-22:00
Car connection
Harbour ParadeWifi
- Free Wi-Fi
Dining
- Café Express (in the station)
- Sandwich Bar (in the station).
Taxis
- Available outside the station.
Accessibility
- Elevators, ramps
WC
- Available near the entrance.
Public transport options for Southampton, Coach Station
- Bus: U1, U2, U6, X4 Train: South Western Railway
Southampton, University
information
The major coach station for arrivals in Carmarthen is Carmarthen, Lammas Street (Rose and Crown Hotel). Find all the information you need to know about services, amenities and connections at Carmarthen, Lammas Street (Rose and Crown Hotel) for your trip to Carmarthen from Southampton.
Carmarthen, Lammas Street (Rose and Crown Hotel)
Amenities at bus station
Accessibilityinformation
Accessibility
- 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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