CARMARTHEN to LONDON train from £16 with Great Western Railway

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The cheapest and fastest trains from Carmarthen to London

Showing times, prices and bookable tickets for 05 Sept

Cheapest price on 05 Sept

£62

Average ticket price on 05 Sept

£70

Fastest journey on 05 Sept

3 h 44 m

Average journey duration on 05 Sept

3 h 48 m

Trains on 05 Sept

Distance

291 km

Cheap tickets

The best way to find a cheap train ticket from Carmarthen to London is to book your journey as far in advance as possible and to avoid travelling at rush hour.

The average ticket from Carmarthen to London will cost around £70 if you buy it on the day, but you can find cheap train tickets today for only £62.

Fast trains

On Sat 05 Sept, we found 16 trains from Carmarthen to London, including 7 direct services.

These direct trains cover the 291 km distance in an average of 3 h 48 m but if you time it right, some trains will get you there in just 3 h 44 m .

The slowest trains will take 3 h 50 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.

W35203
17:303h49
Carmarthen station (CMN)
21:19London Paddington (PAD)
£621One-way
0 changes
C42296
16:293h50
Carmarthen station (CMN)
20:19London Paddington (PAD)
£621One-way
0 changes
C42292
11:303h52
Carmarthen station (CMN)
15:22London Paddington (PAD)
£671One-way
0 changes
W35199
15:283h53
Carmarthen station (CMN)
19:21London Paddington (PAD)
£671One-way
0 changes
C42294
13:303h50
Carmarthen station (CMN)
17:20London Paddington (PAD)
£671One-way
0 changes

Travel Information

Compare coach and train for Carmarthen to London

Omio recommends booking the train as it is the most popular option from Carmarthen to London among Omio's users. If you are prioritising price, take the coach, with an average ticket price of £25 For those with little time, consider booking a train, which has an average total journey time of 4h 34m. If you are seeking to minimise your carbon footprint, the train is your best option, with estimated CO2 emissions of 0.1 - 0.3kg. Average ticket prices depend on the travel mode: a coach costs an average of £25, while a train costs an average of £65.

Distance: 291 km

Compare train with

Most popular Train	Coach	Driving
£65 Average Price	£25 Average Price Cheapest	£90 Average Price (fuel + tolls)
4h 34m Average total duration Fastest 4h 4m Onboard + 30m Additional time*	6h 37m Average total duration 6h 7m Onboard + 30m Additional time*	4h 5m Average total duration (door-to-door)
0.1 - 0.3kg CO2 emissions Lowest	0.3 - 0.7kg CO2 emissions	- CO2 emissions
Most popular train company	Most popular bus company	Your own car or car rental
Direct Options	Direct Options	Direct Options

Additional time: Average total travel duration to departure point, security checks and transfers.

The cheapest way to travel from Carmarthen to London is a coach with an average price of £25.

This is compared to other travel options from Carmarthen to London:

A coach is £40 less than a train for this route with tickets for a train from Carmarthen to London costing on average £65.

The fastest way to travel from Carmarthen to London is by train with an average journey time of 4h 4m.

Other travel options to London take longer:

Coach takes on average 6h 7m.

It's helpful to compare your options as there are 2 ways to travel between Carmarthen and London including taking a coach and train.

Take the train. On this route, it beats driving on both time and money.

The journey is about 1m faster (4h 4m by train vs 4h 5m by car) and roughly £24 cheaper once you factor in fuel and tolls (£65 vs £90). You'll also arrive in the city centre rather than hunting for parking, and you can work, read, or watch the landscape go by instead of concentrating on the road.

Direct services run with Great Western Railway, Great Western Railway (GWR).

Driving is still worth considering if you want to stop along the way or need a car once you arrive.

Live departures

Carmarthen to London train times

The table below shows live departures for Carmarthen to London trains for tomorrow, Saturday 5 September. You can also manually refresh the results below to see updated train journeys.

Last updated at

Provider	Departs	Duration	Arrives	Changes
W35164+G38440	4:37 Carmarthen station (CMN)	3h44	8:21 London Paddington (PAD)	1 change
W35168+G39157	5:28 Carmarthen station (CMN)	3h51	9:19 London Paddington (PAD)	1 change
C42288+G38948	6:04 Carmarthen station (CMN)	3h50	9:54 London Paddington (PAD)	1 change
C42289	7:24 Carmarthen station (CMN)	3h56	11:20 London Paddington (PAD)	0 changesdirect
C42290+G39182	8:30 Carmarthen station (CMN)	3h52	12:22 London Paddington (PAD)	1 change
W35181	9:30 Carmarthen station (CMN)	3h51	13:21 London Paddington (PAD)	0 changesdirect
W35184+G39194	10:30 Carmarthen station (CMN)	3h52	14:22 London Paddington (PAD)	1 change
C42292	11:30 Carmarthen station (CMN)	3h52	15:22 London Paddington (PAD)	0 changesdirect
C42293+G39207	12:33 Carmarthen station (CMN)	3h49	16:22 London Paddington (PAD)	1 change
C42294	13:30 Carmarthen station (CMN)	3h50	17:20 London Paddington (PAD)	0 changesdirect
W35195+G39218	14:32 Carmarthen station (CMN)	3h50	18:22 London Paddington (PAD)	1 change
W35199	15:28 Carmarthen station (CMN)	3h53	19:21 London Paddington (PAD)	0 changesdirect
C42296	16:29 Carmarthen station (CMN)	3h50	20:19 London Paddington (PAD)	0 changesdirect
W35203	17:30 Carmarthen station (CMN)	3h49	21:19 London Paddington (PAD)	0 changesdirect
C42297+G39262	18:33 Carmarthen station (CMN)	3h48	22:21 London Paddington (PAD)	1 change
C42448 · C42157+G38311	18:54 Carmarthen station (CMN)	5h30	0:24 London Paddington (PAD)	2 changes
This is the last train of the day.

Find all the dates and times for this journey

Compare prices and tickets Carmarthen to London 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 Carmarthen to London trains with Omio?

Great Western Railway as well as Transport for Wales, Great Western Railway (GWR), Transport for Wales and more offer trains services from Carmarthen to London.

Omio is an official ticket reseller for all your travel options from Carmarthen to London.

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 Transport for Wales, Great Western Railway (GWR) or Transport for Wales to find the best option for your trip from Carmarthen to London.
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 bus and train to ensure you get the best deal for traveling from Carmarthen to London.

Why book with Omio over Wanderu?

Compare with other providers: On Omio, you can also compare tickets for the likes of Transport for Wales, Great Western Railway (GWR) or Transport for Wales to find the best option for your trip from Carmarthen to London.
Multiple modes of transport: Omio allows you to compare travel options including bus and train to find the ideal travel option from Carmarthen to London.

Journey information

Overview: Train from Carmarthen to London

United Kingdom

Trains from Carmarthen to London run on average 7 times per day, taking around 4h 4m. Cheap train tickets for this journey start at £45 but you can travel from only £16 by coach.

There are 2 trains per day. The earliest train runs at 03:27, the last at 22:49. The fastest train covers the 291 km distance in 3h 44m.

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

Cheapest alternative travel mode

Coach from £16

Distance

291 km

Average train duration

4h 4m

Cheapest ticket price

£45

Trains per day

Direct trains

Fastest train

3h 44m

First train

3:27

Last train

22:49

Cheapest Month

Feb

Cheapest Day

Wed

High Season

Jan - Mar

Low Season

Apr - Jun

Busiest Day

Mon

Least Busy Day

Sun

Best time to book

35 days

Price information

Cheapest alternative travel mode

Coach from £16

Train companies: Great Western Railway, Transport for Wales, Great Western Railway (GWR) from Carmarthen to London trainsGreat Western Railway, Transport for Wales, Great Western Railway (GWR) trains will get you between Carmarthen and London from £16. 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

3h 44m

Cheapest Great Western Railway Price

£45

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

Learn more about Great Western Railway

Transport for Wales

About

Transport for Wales is a public transport provider in Wales, UK. It operates a comprehensive network of trains, buses and ferries across the country. The trains are modern and comfortable, with a range of different types including InterCity Express Trains, Regional Trains, and Metro Trains. Onboard facilities include free Wi-Fi, power sockets, and a range of food and drink options. There are a variety of ticket types available, including single and return tickets, season tickets, and group tickets. The most popular routes include Cardiff to Swansea, Cardiff to Newport, and Cardiff to Manchester.

Luggage & cancellation policy

Average Transport for Wales Duration

4h 46m

Cheapest Transport for Wales Price

£71

Transport for Wales frequency

3 a day

Luggage included

2 large items of luggage and 1 small hand luggage included

Luggage storage

Overhead racks, luggage areas at end of carriages, under seats

Cancellation Policy

Refund policy depends on ticket type

Refund

Full refund if service canceled

Amenities on board the train

Wifi

Food sold onboard

Trolley service on most routes with snacks and drinks. Some stations have cafes

Seat reservation

Seat reservations recommended but not mandatory. Free of charge when booking tickets

Toilets

USB plugs

Accessibility

Wheelchair spaces, accessible toilets, ramps for boarding, priority seating, assistance service available

Pets

Small pets in carriers travel free. Dogs allowed with ticket (£5 per day). Guide dogs free

Quiet zone

Great Western Railway (GWR)

Luggage & cancellation policy

Average Great Western Railway (GWR) Duration

3h 39m

Cheapest Great Western Railway (GWR) Price

£171

Great Western Railway (GWR) frequency

7 a day

Complete guide to London

Things to do in London

Discover the best of London — top attractions, local food, transport tips, budget advice, and currency essentials. Plan your perfect London trip today.

Must visit

The British Museum

World-class collection spanning ancient civilisations, the Rosetta Stone and global treasures with free permanent galleries.

View on map Visit website

Must visit

The National Gallery

National collection of European painting from Van Gogh to Turner in a landmark Trafalgar Square setting.

View on map Visit website

Must visit

Victoria and Albert Museum

Vast museum of art, design and performance, loved for fashion, sculpture and major temporary exhibitions.

View on map Visit website

Pound sterling (£)

Very costly by European standards; hotels, dining and transport are notably pricier than in most UK and EU city breaks.

Average meal costs

Budget: £8-15 for fast food or street food.
Mid-range: £20-40 per person for a meal.
Fine dining: £80+ per person for upscale restaurants.
Coffee: £3-5 for a cappuccino.

Tipping culture

Restaurants often add a 12.5% service charge; if not, tip 10-12%. Taxis: round up or 10%. Cafés: no obligation, small change optional.

FAQs: Carmarthen to London train

Find answers to the most common questions about traveling from Carmarthen to London 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 London, this guide helps you travel smarter and with confidence.

The cost of a train ticket from Carmarthen to London can vary. The cheapest tickets are usually available from £45, while the average price tends to be around £65.

The train journey from Carmarthen to London covers a distance of 291 km and takes approximately 3h 44m. Trains run 7 per day.

The train distance from Carmarthen to London is 291 km.

The first train from Carmarthen to London leaves at 3:27.

The last train from Carmarthen to London departs at 22:49.

Trains from Carmarthen to London run approximately 7 times per day.

Currently, there is no high-speed train service from Carmarthen to London.

Yes, there is a direct train between Carmarthen and London. The service operates 2 times per day, provided by Great Western Railway, Great Western Railway (GWR).

To get from Carmarthen to London, you can choose from several travel options including coach and train.

There is no night train service from Carmarthen to London.

The train station in Carmarthen that goes to London is Carmarthen station (CMN), and it arrives at London Paddington (PAD).

The cheapest way to get from Carmarthen to London is by coach, costing approximately £16.

Booking trains from Carmarthen to London 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 London offers scenic views, particularly as it travels through the picturesque landscapes of South Wales and the rolling countryside of England. Passengers can enjoy glimpses of lush greenery, charming villages, and the Severn Estuary, making parts of the trip visually appealing.

A day trip from Carmarthen to London is not feasible as the journey takes 3h 44m each way. Trains are available 6 times per day.

In London, you can enjoy panoramic views from The London Eye, catch a theatrical production in the vibrant West End Theatre District, and explore the eclectic Camden Market. Take a leisurely walk through Hyde Park or visit the Tate Modern for contemporary art. Don't miss the British Museum's vast collection, the historic Tower of London, iconic Buckingham Palace, and the political landmarks of the Houses of Parliament and Big Ben. St. Paul's Cathedral offers architectural beauty and rich history.

For a first-time visitor to London, 3 to 4 days is usually sufficient to explore major attractions such as the British Museum, Tower of London, Buckingham Palace, and the West End.

Yes, you can take the train from Carmarthen to London.

popular train stations

Important Stations and Airports in Carmarthen and London

Most Carmarthen to London trains use the Carmarthen to London Paddington station pair, with some services arriving at Heathrow Terminals 2 & 3. Use this guide to compare Carmarthen and London 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 London

Which Carmarthen station do trains to London leave from?

Trains from Carmarthen to London 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 Shopping

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.

More about Carmarthen

London PaddingtonPraed Street, London, Greater London, W2 1HQ, United Kingdom+44 3457114141 Wifi

City-centre transport

Getting to London Paddington from London city centre

TrainElizabeth · 7m · £2 · every ~21 min

BusN118, N18 · 21m · £4 · every ~6 min

36 · 31m · £21 · every ~29 min

N205 · 32m · £4 · every ~2 min

46 · 1h 22m · £2 · every ~19 min

SubwayBakerloo · 12m · £4 · every ~65 min

London Paddington train station facilities and services

London Paddington has practical services for this route, including Wifi, Lockers, Shopping, Parking, Dining, ATM, Taxis, Accessibility, WC, Hotel, Lounge, Lost and Found Office, Ticket Office, Bike Parking, Bike Rental, Car Rental and Information Desk.