The cheapest and fastest trains from Carmarthen to Portsmouth
Cheapest price
£105
Average price
£105
Fastest journey
5 h 52 m
Average duration
5 h 52 m
Trains per day
1
Distance
252 km
The best way to find a cheap train ticket from Carmarthen to Portsmouth is to book your journey as far in advance as possible and to avoid travelling at rush hour.
The average ticket from Carmarthen to Portsmouth will cost around £105 if you buy it on the day, but you can find cheap train tickets today for only £105.
Of the 1 trains that leave Carmarthen for Portsmouth every day 1 travel direct so it’s quite easy to avoid journeys where you’ll have to change along the way.
These direct trains cover the 252 km distance in an average of 5 h 52 m but if you time it right, some trains will get you there in just 5 h 52 m .
The slowest trains will take 5 h 52 m and usually involve a change or two along the way, but you might be able to save a few pennies if you’re on a budget.
11:555h52Carmarthen17:47Portsmouth£1051One-way0 changes
11:555h52Carmarthen17:47Portsmouth£1051One-way0 changes
Travel Information
Compare train and coach 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 coach with prices starting from £36. For those with little time consider booking a train which can get you there in 5h 15m. The ticket price range depends on the travel mode: a coach costs an average of £36, and a train costs an average of £105.
Distance: 252 km
Compare train with
Most popular Train | Coach |
|---|---|
£105 Average Price | £38 Average Price Cheapest |
5h 45m Average total duration Fastest 5h 15m Onboard + 30m Additional time* | 10h 47m Average total duration 10h 17m Onboard + 30m Additional time* |
Direct Options | Direct Options |
Live departures
Carmarthen to Portsmouth train times
The table below shows live departures for Carmarthen to Portsmouth trains for tomorrow, Tuesday 5 May. You can also manually refresh the results below to see updated train journeys.
| Provider | Departs | Duration | Arrives | Changes | Tickets |
|---|---|---|---|---|---|
![]() | 11:55 Carmarthen | 5h52 | 17:47 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 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.
05 May
06 May
07 May
08 May
09 May
10 May
11 May
Why should you book Carmarthen to Portsmouth trains with Omio?
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 first_great_western 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.
- Compare all your options: Omio allows you to compare Great Western Railway with all available travel options, which are train and bus to ensure you get the best deal for traveling from Carmarthen to Portsmouth.
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 Portsmouth.
Journey information
Overview: Train from Carmarthen to Portsmouth
Trains from Carmarthen to Portsmouth run on average 5 times per day, taking around 5h 15m. Cheap train tickets for this journey start at £105 but you can travel from only £36 by coach.
The earliest train runs at 04:04, the last at 20:28. The fastest train covers the 252 km distance in 5h 52m.
Distance 252 km |
Average train duration 5h 15m |
Cheapest ticket price £105 |
Trains per day 5 |
Fastest train 5h 52m |
First train 4:04 |
Last train 20:28 |
Cheapest Month Feb |
Cheapest Day Mon |
High Season Jul - Sept |
Low Season Apr - Jun |
Train companies: Great Western Railway, first_great_western, Transport for Wales from Carmarthen to Portsmouth trainsGreat Western Railway, first_great_western, Transport for Wales trains will get you between Carmarthen and Portsmouth from £36. With over 1000 travel companies on Omio, you can find the best train times and tickets for your trip.
Great Western Railway
first_great_western
Transport for Wales
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.

popular train stations
Important Stations and Airports in Carmarthen and Portsmouth
- Opening hours: Monday - Friday 06:45 - 18:00
- Type of shops available: News agent
- Car Park: Station Car Park
- 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
- Toilets Location: The toilets are located on Platform 1. The National key toilets are located on Platform 1; these toilets are operated by a radar key.
- National key toilets: Yes
- Baby changing facilities: No
- Storage sheltered: No
- Storage location: On Platform 1
- Storage CCTV: Yes
- Location for Rail Replacement Services: Wait at the bus stop opposite the station entrance
- Opening hours: Monday - Friday 05:40 - 20:30 Saturday 05:40 - 20:30 Sunday 06:40 - 20:40
- Car Park: Station Car Park
- 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
- Toilets Location: The toilets are located in the Lower Concourse, next to the gateline. The National key toilets are located in the Lower Concourse; these toilets are operated by a radar key. A radar key is available from station staff upon request. A 'National Key Scheme' key [RADAR] can be purchased by contacting the following. Address: 12 City Forum, 250 City Road, London, EC1V 8AF. Tel: 020 7250 3222. Minicom: 020 7250 4119. Fax: 020 7250 0212. Email: [email protected]
- National key toilets: Yes
- Baby changing facilities: No
- Storage sheltered: Yes
- Storage location: Concourse and car park
- Storage CCTV: Yes
- Location for Rail Replacement Services: Station Street bus stop at side of Railway Station near Matalan car park.
- Opening hours: Monday - Friday 05:50 - 19:00 Saturday 06:30 - 19:00 Sunday 08:00 - 19:00
- Car Park: No
- 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
- Toilets Location: The toilets are located on Platform 1. The National key toilets are located on Platform 1; these toilets are operated by a radar key.
- National key toilets: Yes
- National key toilets location: The National key toilets are located on Platform 1; these toilets are operated by a radar key.
- Baby changing facilities: No
- Storage sheltered: No
- Storage location: Platform 1 and outside booking hall
- Storage CCTV: Yes
- Location for Rail Replacement Services: Hard Interchange Stands G, H or J
Most popular train connections from Carmarthen
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