- 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 coach for Portsmouth to Carmarthen
Omio recommends booking the coach as it is the most popular option from Portsmouth to Carmarthen among Omio's users. If you are prioritising price, take the coach, with an average ticket price of £68 For those with little time, consider booking a train, which has an average total journey time of 5h 38m. Average ticket prices depend on the travel mode: a coach costs an average of £68, while a train costs an average of £96.
Distance: 252 km
Compare bus with
Most popular Coach | Train |
|---|---|
£68 Average Price Cheapest | £96 Average Price |
7h 28m Average total duration 6h 58m Onboard + 30m Additional time* | 5h 38m Average total duration Fastest 5h 8m Onboard + 30m Additional time* |
Direct Options | Direct Options |
The cheapest way to travel from Portsmouth to Carmarthen is a coach with an average price of £68.
This is compared to other travel options from Portsmouth to Carmarthen:
A coach is £28 less than a train for this route with tickets for a train from Portsmouth to Carmarthen costing on average £96.
The fastest way to travel from Portsmouth to Carmarthen is by train with an average journey time of 5h 8m.
Other travel options to Carmarthen take longer:
Coach takes on average 6h 58m.
Yes, you can take a between Portsmouth and Carmarthen.
Why should you book Portsmouth to Carmarthen coaches with Omio?
National Express operates all coaches services from Portsmouth to Carmarthen.
Omio is an official ticket reseller for all your travel options from Portsmouth 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 Portsmouth to Carmarthen
United KingdomUnited Kingdom
Buses from Portsmouth to Carmarthen run on average 2 times per day, taking around 6h 58m. Cheap bus tickets for this journey start at £67 if you book in advance.
The earliest coach runs at 04:04, the last at 10:55. The fastest coach covers the 252 km distance in 6h 50m.
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 252 km |
Average bus duration 6h 58m |
Cheapest ticket price £67 |
Buses per day 2 |
Fastest bus 6h 50m |
First bus 4:04 |
Last bus 10:55 |
High Season Apr - Jun |
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
Bus providers: National Express from Portsmouth to CarmarthenYou can travel by bus between Portsmouth to Carmarthen with National Express for as low as £67. 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
6h 50m
Cheapest National Express Price
£67
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: Portsmouth to Carmarthen coach
Find answers to the most common questions about traveling from Portsmouth 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 Portsmouth to Carmarthen can start from as little as £67 when you book in advance. The average coach ticket price for Portsmouth to Carmarthen is £68; 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 Portsmouth to Carmarthen is 6h 50m to travel the 252 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 Portsmouth to Carmarthen leaves at 4:04. Plan your trip with the Journey Planner from Omio.
The latest coach from Portsmouth to Carmarthen leaves at 10:55.
There are 2 coaches a day from Portsmouth 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 Portsmouth 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 Portsmouth and Carmarthen and compare the amenities they offer before buying a coach ticket.
When departing from Portsmouth , you have various coach station options to start your route from including Portsmouth, The Hard Interchange, Portsmouth, 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 Portsmouth, The Hard Interchange, which is located around 1 km 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 Portsmouth is worth doing but not as a day trip with a journey time of 6h 50m each way. Check with Omio app the best way to travel.
Yes, you can take a between Portsmouth and Carmarthen.
Yes, the following accessibility options are available when taking the coach from Portsmouth to Carmarthen:
- National Express
- Assistance
- Priority seating
- Accessible toilets.
Yes, there are bathrooms on board the coach from Portsmouth to Carmarthen for coach company National Express.
Whether you can cancel your coach ticket from Portsmouth 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 Portsmouth to Carmarthen.
Yes, the following luggage options are included when booking a coach ticket from Portsmouth 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 Portsmouth to Carmarthen:
- National Express
- 10€ per additional bag.
Unfortunately, pets are not allowed on the coach from Portsmouth to Carmarthen.
You can reserve your seat on the coach from Portsmouth to Carmarthen with the following coach company: National Express
Yes, there are USB plugs on board the coach from Portsmouth to Carmarthen with the following coach company: National Express.
Yes, there is Wifi on board the coach from Portsmouth to Carmarthen with the following coach company: National Express.
popular bus stations
Important Stations and Airports in Portsmouth and Carmarthen
Most Portsmouth to Carmarthen buses use the Portsmouth, University to Carmarthen, Lammas Street (Rose and Crown Hotel) station pair. Use this guide to compare Portsmouth and Carmarthen bus stations on this route, check city-centre transport, alongside checking practicalities like bus station facilities and services.
Departure bus stations in Portsmouth
Arrival bus stations in Carmarthen
Which Portsmouth station do buses to Carmarthen leave from?
Buses from Portsmouth to Carmarthen leave from Portsmouth, The Hard Interchange. The station is 1 km from Portsmouth city centre at The Hard Interchange, Portsmouth PO1 3DT, UK.
Portsmouth, The Hard InterchangeThe Hard Interchange, Portsmouth PO1 3DT, UK
City-centre transport
Getting to Portsmouth, The Hard Interchange from Portsmouth city centre
Portsmouth, The Hard Interchange is 1 km from Portsmouth city centre. Public transport options include:
TrainLondon Victoria - Portsmouth Harbour, Brighton - Portsmouth Harbour, Littlehampton - Portsmouth Harbour, Three Bridges - Portsmouth Harbour, Barnham - Portsmouth Harbour, Gatwick Airport - Portsmouth Harbour, Havant - Portsmouth Harbour, Bognor Regis - Portsmouth Harbour · 3m · £0.90 · every ~4 min
Bus1, 2, 8, 3, 7, X4, H1, X5, Pr1 · 6m · £2 · every ~214 min
Portsmouth, The Hard Interchange bus station facilities and services
Portsmouth, The Hard Interchange has practical services for this route, including Wifi, Parking, Dining, ATM, Taxis, Accessibility, WC and Ticket Office.
Food and drink
Food options include: Café at The Hard (in the station), Fast Food Outlet (in the station).
Wi-Fi and ATMs
Free Wi-Fi. ATMs are located near the entrance.
Tickets and information
Ticket office support is available at Portsmouth, The Hard Interchange.
Parking, taxis and toilets
Available at Portsmouth, The Hard Interchange: Parking, Taxis, WC.
Accessibility
Accessibility facilities are available at Portsmouth, The Hard Interchange: Elevators, ramps.
Portsmouth, University
Which Carmarthen station do buses from Portsmouth arrive at?
Buses from Portsmouth 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 Portsmouth
More options for your journey from Portsmouth to Carmarthen
Here are some other resources that might have the information you need
Most popular buses to and from Carmarthen and Portsmouth
Most popular bus connections
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