- Must visit
HMS Victory
A major naval museum where visitors can board Nelson’s flagship and explore life at sea through preserved decks and displays.
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Travel Information
Compare train for Carmarthen to Portsmouth
Omio recommends booking the train as it is the most popular option from Carmarthen to Portsmouth among Omio's users. If you are prioritising price, take the train, with an average ticket price of £148 For those with little time, consider booking a train, which has an average total journey time of 5h 45m. Average ticket prices depend on the travel mode: a train costs an average of £148, while a train costs an average of £148.
Distance: 252 km
Compare train with
Most popular Train | Driving |
|---|---|
£148 Average Price Cheapest | £53 Average Price (fuel + tolls) |
5h 45m Average total duration Fastest 5h 15m Onboard + 30m Additional time* | 3h 56m 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 Carmarthen to Portsmouth is a train with an average price of £148.
The fastest way to travel from Carmarthen to Portsmouth is by train with an average journey time of 5h 15m.
Yes, you can take a train between Carmarthen and Portsmouth.
Take the train. It's the cheaper option, and the extra time on board is usually more relaxing than driving it.
Tickets start at around £148 compared to roughly £53 in fuel and tolls — a saving of about £-95.34. The journey takes 5h 15m versus 3h 56m by car, so you'll arrive a bit later, but you can work, read, or sleep along the way rather than spending the time behind the wheel. You'll also save the hassle of parking at the other end.
Driving is worth it if you're on a tight schedule, travelling as a group, or want to stop somewhere en route.
Live departures
Carmarthen to Portsmouth train times
The table below shows live departures for Carmarthen to Portsmouth trains for today, Thursday 17 September. You can also manually refresh the results below to see updated train journeys.
Last updated at
| Provider | Departs | Duration | Arrives | Changes | Tickets |
|---|---|---|---|---|---|
| 9:30 Carmarthen | 5h49 | 15:19 Portsmouth | 0 changesdirect | |
This is the last train of the day. | |||||
Find all the dates and times for this journey
Compare prices and tickets Carmarthen to Portsmouth 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 Carmarthen to Portsmouth trains with Omio?
Great Western Railway as well as Great Western Railway (GWR) or Transport for Wales offer trains services from Carmarthen to Portsmouth.
Omio is an official ticket reseller for all your travel options from Carmarthen to Portsmouth.
Why book with Omio vs Great Western Railway?
- Compare with other providers: On Omio, you can not only buy tickets for Great Western Railway, but also compare tickets for the likes of Great Western Railway (GWR) or Transport for Wales to find the best option for your trip from Carmarthen to Portsmouth.
- 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: Train from Carmarthen to Portsmouth
United KingdomUnited Kingdom
Trains from Carmarthen to Portsmouth run on average 6 times per day, taking around 5h 15m. Cheap train tickets for this journey start at £130 if you book in advance.
The earliest train runs at 04:04, the last at 20:28. The fastest train covers the 252 km distance in 5h 9m.
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 train duration 5h 15m |
Cheapest ticket price £130 |
Trains per day 6 |
Fastest train 5h 9m |
First train 4:04 |
Last train 20:28 |
Cheapest Month May |
Cheapest Day Thu |
High Season Jul - Sept |
Low Season Apr - Jun |
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
Train companies: Great Western Railway, Great Western Railway (GWR), Transport for Wales from Carmarthen to Portsmouth trainsGreat Western Railway, Great Western Railway (GWR), Transport for Wales trains will get you between Carmarthen and Portsmouth from £130. With over 1000 travel companies on Omio, you can find the best train times and tickets for your trip.
Great Western Railway
About
Great Western Railway is a train operating company in the United Kingdom. It operates services from London Paddington to the West of England, South Wales and the Cotswolds. It also operates services from London Paddington to Oxford, Reading and Bristol. It offers a range of ticket types, including Advance, Anytime, Off-Peak and Super Off-Peak tickets. Onboard facilities include free Wi-Fi, power sockets, air conditioning and catering services. The most popular routes for Great Western Railway are London Paddington to Bristol, Reading and Oxford.
Luggage & cancellation policy
Average Great Western Railway Duration
7h 21m
Cheapest Great Western Railway Price
£92
Great Western Railway frequency
5 a day
Luggage included
Two pieces of luggage and one piece of hand luggage included in ticket price
Luggage storage
Overhead racks, dedicated luggage areas at end of carriages, under seats
Cancellation Policy
Refund policies apply as per ticket type
Refund
Full refund if train is cancelled
Amenities on board the train
Wifi
Food sold onboard
Cafe bar serving hot and cold drinks, snacks, sandwiches. First Class at-seat service on some routes
Seat reservation
Optional seat reservations available for a fee. Free in First Class
Toilets
USB plugs
Accessibility
Wheelchair spaces, accessible toilets, ramps for boarding, priority seating, assistance service available
Pets
Small pets travel free. Dogs must be on lead. Maximum two dogs per passenger
Quiet zone
Great Western Railway (GWR)
Luggage & cancellation policy
Average Great Western Railway (GWR) Duration
5h 14m
Cheapest Great Western Railway (GWR) Price
£160
Great Western Railway (GWR) frequency
6 a day
Transport for Wales
Luggage & cancellation policy
Average Transport for Wales Duration
5h 9m
Cheapest Transport for Wales Price
£130
Transport for Wales frequency
10 a day
Complete guide to Portsmouth
Things to do in Portsmouth
Discover the best of Portsmouth — top attractions, local food, transport tips, budget advice, and currency essentials. Plan your perfect Portsmouth trip today.
- Recommended
HMS Alliance
This working museum ship reveals cramped Victorian submarine life and the engineering behind one of Britain’s earliest submarines.
- Recommended
Portsmouth Museum and Art Gallery
Portsmouth’s city museum covers local history, football heritage and art, with exhibits spanning the city’s people and places.
- Must visit
Old Portsmouth
A historic waterfront district with cobbled lanes, pubs, sea walls and several key heritage sites within easy walking distance.
- Must visit
Southsea Seafront
A long pebble beach promenade with piers, gardens and open sea views, well suited to relaxed walks along the Southsea seafront.
- Recommended
Southsea Common
A broad common by the Solent, popular for walks, picnics and views of passing ships, the Isle of Wight and seafront landmarks.
- Vegetarian
Hampshire hog cake
A rich fruit cake packed with dried fruit, spice and treacle, long associated with Hampshire baking and often enjoyed at Christmas and local celebrations.
- Gluten-free
South Coast crab
Fresh crab landed on the South Coast, usually served simply in sandwiches, salads or dressed shells, prized for sweet meat and Portsmouth’s seaside setting.
- Gluten-free
Fisherman’s pie
A classic Portsmouth and Hampshire pub dish of smoked haddock, potato and onion in a creamy sauce, baked until golden and comforting in coastal weather.
The Fisherman's Kitchen
Popular Southsea spot for classic fish and chips and fresh seafood, with a casual atmosphere close to the seafront.
The Briny
Smart waterfront restaurant in Old Portsmouth serving modern British dishes with strong seafood options in an elegant, relaxed setting.
Still and West
Historic pub in Old Portsmouth known for traditional British cooking, cask ales and harbour views in a characterful setting.
Pound sterling (£)
Moderate for the UK. Hotels can be pricey in summer, but dining and local buses remain manageable for most city-break budgets.
Average meal costs
- Budget
- £8-15 for fast food or a simple meal.
- Mid-range
- £18-35 per person for a restaurant meal.
- Fine dining
- £60+ per person for upscale dining.
- Coffee
- £3-4.50 for a cappuccino.
Tipping culture
Restaurants: 10-12.5% if not already added. Taxis: round up or 10%. Cafés and pubs: tipping is optional, though small change is appreciated for table service.
Book a Journey
Get the appOfficial public transport app
Prices
- Single ticket
- £3.00
- Day pass
- £5.00
To the city centre
Portsmouth Harbour -> Guildhall Square, Portsmouth
- Distance
- 1.6 km
- Travel time
- 20 min
- Contactless payment is available on Stagecoach buses in Portsmouth. Buy before boarding only if your chosen operator or ticket type requires it.
- Guildhall Square and the Commercial Road bus hub are central for onward travel. Portsmouth Harbour is about 1 mile from the city centre, so walking is practical in good weather.
FAQs: Carmarthen to Portsmouth train
Find answers to the most common questions about traveling from Carmarthen to Portsmouth by train. 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 train, the cheapest option, or tips for making the most of your visit at Portsmouth, this guide helps you travel smarter and with confidence.
The cost of a train ticket from Carmarthen to Portsmouth can vary. The cheapest tickets are usually available from £130, while the average price tends to be around £148.
The train journey from Carmarthen to Portsmouth covers a distance of 252 km and takes approximately 5h 9m. Trains run 6 per day.
The train distance from Carmarthen to Portsmouth is 252 km.
The first train from Carmarthen to Portsmouth leaves at 4:04.
The last train from Carmarthen to Portsmouth departs at 20:28.
Trains from Carmarthen to Portsmouth run approximately 6 times per day.
Currently, there is no high-speed train service from Carmarthen to Portsmouth.
Unfortunately, there is no direct train service currently available from Carmarthen to Portsmouth.
To travel from Carmarthen to Portsmouth, you can take a train.
There is no night train service from Carmarthen to Portsmouth.
The train station in Carmarthen that goes to Portsmouth is Carmarthen station (CMN), and it arrives at Portsmouth & Southsea (PMS).
The cheapest way to get from Carmarthen to Portsmouth is by train, costing approximately £130.
Booking trains from Carmarthen to Portsmouth in advance is advisable, especially during peak travel seasons or for long journeys, to ensure availability and secure better fares.
The train journey from Carmarthen to Portsmouth offers a scenic experience as it traverses through picturesque Welsh landscapes, rolling hills, and coastal views, particularly around the South Wales coast and the countryside of southern England.
A day trip from Carmarthen to Portsmouth is not feasible as the journey takes 5h 9m. However, there are 4 trains per day covering the distance of 252 km.
A visit to Portsmouth typically requires 2 to 3 days to explore its main attractions, such as the Historic Dockyard, Spinnaker Tower, and Southsea Beach.
Yes, you can take the train from Carmarthen to Portsmouth.
popular train stations
Important Stations and Airports in Carmarthen and Portsmouth
Most Carmarthen to Portsmouth trains use the Carmarthen to Portsmouth & Southsea station pair, with some services arriving at Portsmouth Harbour. Use this guide to compare Carmarthen and Portsmouth train stations on this route, check city-centre transport, alongside checking practicalities like train station facilities and services.
Departure train stations in Carmarthen
Arrival train stations in Portsmouth
Which Carmarthen station do trains to Portsmouth leave from?
Trains from Carmarthen to Portsmouth leave from Carmarthen. The station is from Carmarthen city centre at Carmarthen station, Station Road, Carmarthen, Carmarthenshire, SA31 2BE.
CarmarthenCarmarthen station, Station Road, Carmarthen, Carmarthenshire, SA31 2BE+44 3450507080
City-centre transport
Getting to Carmarthen from Carmarthen city centre
BusT1x, T1, T1a · 3m · £0.90 · every ~4 min
Carmarthen train station facilities and services
Carmarthen has practical services for this route, including Shopping, Parking, Dining, Accessibility, WC, Hotel, Lounge, Lost and Found Office, Ticket Office, Bike Parking and Bike Rental.
Food and drink
Food and drink options are available at Carmarthen.
Tickets and information
Ticket office support is available at Carmarthen.
Luggage and lost property
Lost and found is available at the station.
Parking, taxis and toilets
Available at Carmarthen: Parking, WC.
Bike and car services
Available at Carmarthen: Bike Parking, Bike Rental.
Accessibility
Accessibility facilities are available at Carmarthen: Staff help available: Yes, Step free access coverage: Yes, Step free access note: Category B1. Step free access is available to Platform 1. Platform 2 can be accessed via the ramp at the end of Platform 1 and across a foot crossing, Accessible car park equipment: Wheelchair users can use car park equipment at this station unaided, Accessible ticket machines: There are accessible ticket machines at this station, Accessible toilets: Yes, Ramp for train access: Yes, Wheelchairs available: Yes, Impaired mobility set down / pick up points available: No.
Which Portsmouth station do trains from Carmarthen arrive at?
Trains from Carmarthen to Portsmouth most often arrive at Portsmouth & Southsea. Some services arrive at Portsmouth Harbour, so check your ticket before travel to confirm your Portsmouth arrival station.
Portsmouth & SouthseaPortsmouth & Southsea station, Commercial Road, Portsmouth, Hampshire, PO1 1EQ
City-centre transport
Getting to Portsmouth & Southsea from Portsmouth city centre
Location for Rail Replacement ServicesStation Street bus stop at side of Railway Station near Matalan car park.
Portsmouth & Southsea train station facilities and services
Portsmouth & Southsea has practical services for this route, including Wifi, Parking, Dining, ATM, Accessibility, WC, Hotel, Lost and Found Office, Ticket Office, Bike Parking and Bike Rental.
Food and drink
Food and drink options are available at Portsmouth & Southsea.
Wi-Fi and ATMs
Wi-Fi is available at Portsmouth & Southsea. ATMs are available at Portsmouth & Southsea.
Tickets and information
Ticket office support is available at Portsmouth & Southsea.
Luggage and lost property
Lost and found is available at the station.
Parking, taxis and toilets
Available at Portsmouth & Southsea: Parking, WC.
Bike and car services
Available at Portsmouth & Southsea: Bike Parking, Bike Rental.
Accessibility
Accessibility facilities are available at Portsmouth & Southsea: Staff help available: Yes, Step free access coverage: Yes, Step free access note: Step-free category A Station - This station has step-free access to all platforms. Please be aware that some platforms at this station have no or only partial tactile paving on the platform edge, Accessible ticket machines: There are accessible ticket machines at this station, Accessible ticket machines note: All South Western Railway ticket machines are able to sell tickets with Disabled Persons Railcard discounts. All machines are accessible, however the station may not be so please check the station access note for further details, Accessible toilets: Yes, Ramp for train access: Yes, Wheelchairs available: Yes, Impaired mobility set down / pick up points available: No.
Portsmouth HarbourPortsmouth Harbour station, The Hard Interchange, Portsmouth, Hampshire, PO1 3PA
City-centre transport
Getting to Portsmouth Harbour from Portsmouth city centre
Portsmouth Harbour 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 Harbour train station facilities and services
Portsmouth Harbour has practical services for this route, including Wifi, Parking, Dining, ATM, Taxis, Accessibility, WC, Hotel, Lost and Found Office, Ticket Office, Bike Parking, Bike Rental and Car Rental.
Food and drink
Food and drink options are available at Portsmouth Harbour.
Wi-Fi and ATMs
Wi-Fi is available at Portsmouth Harbour. ATMs are available at Portsmouth Harbour.
Tickets and information
Ticket office support is available at Portsmouth Harbour.
Luggage and lost property
Lost and found is available at the station.
Parking, taxis and toilets
Available at Portsmouth Harbour: Parking, Taxis, WC.
Bike and car services
Available at Portsmouth Harbour: Bike Parking, Bike Rental, Car Rental.
Accessibility
Accessibility facilities are available at Portsmouth Harbour: Staff help available: Yes, Step free access coverage: Yes, Step free access note: Step-free category B Station - Steps or 20m ramp (approx. 1:11 gradient) to main entrance, or steps to side entrance. 32m ramp (gradient up to 1:8) from Wightlink IoW ferry terminal. Level access to all platforms. Stepped footbridge between platforms is also available. Please be aware that this station has no tactile paving on the platform edge, Accessible ticket machines: There are accessible ticket machines at this station, Accessible ticket machines note: All South Western Railway ticket machines are able to sell tickets with Disabled Persons Railcard discounts. All machines are accessible, however the station may not be so please check the station access note for further details, Accessible toilets: Yes, Ramp for train access: Yes, Wheelchairs available: Yes, Impaired mobility set down / pick up points available: No.
Most popular train connections from Carmarthen
More options for your journey from Carmarthen to Portsmouth
Here are some other resources that might have the information you need
Most popular trains to and from Portsmouth and Carmarthen
Most popular train connections to Portsmouth
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