The cheapest and fastest trains from London to Carmarthen
Cheapest price
£71
Average price
£92
Fastest journey
3 h 33 m
Average duration
3 h 40 m
Trains per day
6
Distance
291 km
The best way to find a cheap train ticket from London to Carmarthen is to book your journey as far in advance as possible and to avoid travelling at rush hour.
The average ticket from London to Carmarthen will cost around £92 if you buy it on the day, but you can find cheap train tickets today for only £71.
Of the 6 trains that leave London for Carmarthen every day 3 travel direct so it’s quite easy to avoid journeys where you’ll have to change along the way.
These direct trains cover the 291 km distance in an average of 3 h 40 m but if you time it right, some trains will get you there in just 3 h 33 m .
The slowest trains will take 3 h 44 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.
P08243
P08247
P08241+
G55962
P08245+
G55966
P08239
P08247
P08243
P08239
P08241+
G55962
P08245+
G55966Travel Information
Compare train and coach for London to Carmarthen
Omio recommends booking the train as it is the most popular option from London to Carmarthen among Omio's users. If you are prioritising price take the coach with prices starting from £18. For those with little time consider booking a train which can get you there in 3h 45m. In case you are seeking to minimise your carbon footprint the train is your best bet as it emits only 0.1 - 0.3kg. The ticket price range depends on the travel mode: a coach costs an average of £18, and a train costs an average of £39.
Distance: 291 km
Compare train with
Most popular Train | Coach |
|---|---|
£68 Average Price | £32 Average Price Cheapest |
4h 15m Average total duration Fastest 3h 45m Onboard + 30m Additional time* | 6h 10m Average total duration 5h 40m Onboard + 30m Additional time* |
0.1 - 0.3kg CO2 emissions Lowest | 0.3 - 0.7kg CO2 emissions |
![]() Most popular train company | ![]() Most popular bus company |
Direct Options | Direct Options |
Additional time: Average total travel duration to departure point, security checks and transfers.
Live departures
London to Carmarthen train times
The table below shows live departures for London to Carmarthen trains for today, Thursday 4 December. You can also manually refresh the results below to see updated train journeys.
| Provider | Departs | Duration | Arrives | Changes | Tickets |
|---|---|---|---|---|---|
P08252 | On time 16:18 London Paddington (PAD) | 3h42 | 20:00 Carmarthen station (CMN) | 0 changesdirect | |
P08253+ G55974 | On time 16:48 London Paddington (PAD) | 3h44 | 20:32 Carmarthen station (CMN) | 1 change | |
P08255 | On time 17:48 London Paddington (PAD) | 3h52 | 21:40 Carmarthen station (CMN) | 0 changesdirect | |
P08258+ G55978 | On time 19:18 London Paddington (PAD) | 3h41 | 22:59 Carmarthen station (CMN) | 1 change | |
| Friday 5 December | |||||
P08237+ G55958 | On time 08:48 London Paddington (PAD) | 3h45 | 12:33 Carmarthen station (CMN) | 1 change | |
P08239 | On time 09:48 London Paddington (PAD) | 3h40 | 13:28 Carmarthen station (CMN) | 0 changesdirect | |
P08241+ G55962 | On time 10:48 London Paddington (PAD) | 3h44 | 14:32 Carmarthen station (CMN) | 1 change | |
P08243 | On time 11:48 London Paddington (PAD) | 3h40 | 15:28 Carmarthen station (CMN) | 0 changesdirect | |
P08245+ G55966 | On time 12:48 London Paddington (PAD) | 3h44 | 16:32 Carmarthen station (CMN) | 1 change | |
P08247 | On time 13:48 London Paddington (PAD) | 3h33 | 17:21 Carmarthen station (CMN) | 0 changesdirect | |
Find all the dates and times for this journey
Compare prices and tickets London to Carmarthen 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.
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Journey information
Overview: Train from London to Carmarthen
Trains from London to Carmarthen run on average 6 times per day, taking around 3h 45m. Cheap train tickets for this journey start at £39 but you can travel from only £18 by coach.
There are 2 trains per day. The earliest train runs at 03:27, the last at 23:40. The fastest train covers the 291 km distance in 3h 33m.
Distance 291 km |
Average train duration 3h 45m |
Cheapest ticket price £39 |
Trains per day 6 |
Direct trains 2 |
Fastest train 3h 33m |
First train 03:27 |
Last train 23:40 |
Train companies: Great Western Rail, first_great_western from London to Carmarthen trainsGreat Western Rail, first_great_western trains will get you between London and Carmarthen from £18. With over 1000 travel companies on Omio, you can find the best train times and tickets for your trip.
Great Western Rail
first_great_western
FAQs: London to Carmarthen train
Find answers to the most common questions about traveling from London to Carmarthen 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 Carmarthen, this guide helps you travel smarter and with confidence.

popular train stations
Important Stations and Airports in London and Carmarthen
- Opening hours: Monday - Friday 06:40 - 10:40 Saturday 08:00 - 15:15 Sunday Closed
- Car Park: No
- Staff help available: Yes
- Step free access coverage: Yes
- Step free access note: Accessibility Category A. This station has step-free access to all platforms. Staff ramp assistance is always available. Accessible seating is available on platforms 3&4.
- Accessible ticket machines: There are accessible ticket machines at this station
- Accessible ticket machines note: Accessible ticket machines are located in the stations ticket hall.
- Accessible toilets: Yes
- Ramp for train access: Yes
- Wheelchairs available: Yes
- Wheelchairs available open hours: Staff are available to assist from the first to last train.
- Impaired mobility set down / pick up points available: No
- Toilets Location: On the paid side of the barrier in the stations ticket hall.
- National key toilets: Yes
- National key toilets location: An accessible toilet is located in the ticket hall on the paid side of the barrier. This toilet is operated with a radar key.
- Baby changing facilities: No
- Information available from staff: Yes - from help point,Yes - from ticket office
- Helpline Contact: 0343 222 1234
- Passenger Information Systems: Departure screens, Announcements
- Location for Rail Replacement Services: No rail replacement bus services operate from this station.
- Opening hours: Monday - Friday 06:15 - 13:0015:15 - 19:20 Saturday 08:45 - 15:45 Sunday Closed
- Car Park: No
- Taxi: YES
- Accessible taxis: Yes
- Staff help available: Yes
- Step free access coverage: No
- Step free access note: This is a Category C station: This station does not have step-free access. Assistance Meeting Point is in the Ticket Hall next to the taxi office.
- Accessible taxis: Yes
- Accessible ticket machines: There are accessible ticket machines at this station
- Accessible ticket machines note: All Great Northern ticket machines are able to sell tickets with Disabled Persons Railcard discounts. Ticket machines are of an accessible design, however their location and the station itself may not be so please check the station access note for further details
- Ramp for train access: No
- Wheelchairs available: No
- Impaired mobility set down / pick up points available: No
- Waiting rooms location: A heated waiting room is available on platforms 3 & 4
- Storage location: Inside booking office, and opposite booking office
- Storage CCTV: Yes
- Opening hours: Monday - Friday 06:15 - 21:30 Saturday 06:15 - 21:30 Sunday 07:15 - 21:30
- Car Park: No
- Staff help available: Yes
- Step free access coverage: Yes
- Step free access note: Step free access available through Brighton Yard entrance to all platforms via lifts. Step free access available through Grant Road entrance to platform 1 and 2 via lifts
- 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: Yes
- Toilets Location: The toilets are located next to the Brighton Yard entrance gateline. The National key toilets are located next to the Brighton Yard entrance gateline; 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: Yes
- Waiting rooms location: Waiting rooms are on platforms 1, 9/10 and 13/14
- Storage sheltered: Yes
- Storage location: Brighton Yard side of the station.
- Storage CCTV: Yes
- Location for Rail Replacement Services: Through services: Grant Road Bus Stop A All arrivals (except via Wandsworth Town): St Johns Hill Bus Stop C Arrivals via Wandsworth Town: Grant Road Bus Stop R
- 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
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