CARMARTHEN to LONDON train from $24 (€19) with Great Western Railway

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The cheapest and fastest trains from Carmarthen to London

Showing times and prices for Jun 22

Cheapest price

$71

Average price

$112

Fastest journey

3 h 39 m

Average duration

3 h 40 m

Trains per day

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 traveling at rush hour.

The average ticket from Carmarthen to London will cost around $112 if you buy it on the day, but the cheapest tickets can be found for only $71.

Fast trains

Of the 19 trains that leave Carmarthen for London on Mon, Jun 22, 6 travel direct so it’s quite easy to avoid journeys where you’ll have to change along the way.

On Mon, Jun 22 the 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 39 m .

On Mon, Jun 22 the slowest trains will take 3 h 41 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.

W35437
6:20 PM3h49
Carmarthen station (CMN)
10:09 PMLondon Paddington (PAD)
$711One-way
0 transfers
G15050
4:19 PM3h55
Carmarthen station (CMN)
8:14 PMLondon Paddington (PAD)
$891One-way
0 transfers
W35435
2:20 PM3h53
Carmarthen station (CMN)
6:13 PMLondon Paddington (PAD)
$891One-way
0 transfers
W35434
11:27 AM3h45
Carmarthen station (CMN)
3:12 PMLondon Paddington (PAD)
$951One-way
0 transfers
G15045
9:21 AM3h49
Carmarthen station (CMN)
1:10 PMLondon Paddington (PAD)
$951One-way
0 transfers

Travel Information

Compare train and bus 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 bus with prices starting from $24. For those with little time consider booking a train which can get you there in 3h 54m. 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 bus costs an average of $24, and a train costs an average of $73.

Distance: 180 miles (291 km)

Compare train with

Most popular Train	Bus	Driving
$87 Average price	$32 Average price Cheapest	$120 Average price (fuel + tolls)
4h 24m Average total duration Fastest 3h 54m Onboard + 30m Additional time*	6h 38m Average total duration 6h 8m 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 bus with an average price of $32 (€27).

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

A bus is $55 (€45) less than a train for this route with tickets for a train from Carmarthen to London costing on average $87 (€72).

The fastest way to travel from Carmarthen to London is by train with an average journey time of 3h 54m.

Other travel options to London take longer:

Bus takes on average 6h 8m.

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

We recommend using the train as it is the most popular way to get from Carmarthen to London among Omio's users.

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

The journey is about 11m faster (3h 54m by train vs 4h 5m by car) and roughly $33 (€27) cheaper once you factor in fuel and tolls ($87 (€72) vs $120 (€99)). 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 today, Sunday, June 21. You can also manually refresh the results below to see updated train journeys.

Last updated at

Provider	Departs	Duration	Arrives	Transfers
G38969+C00123	On time 8:35 AM Carmarthen station (CMN)	3h34	12:09 PM London Paddington (PAD)	1 transfer
G39450+C50037	On time 9:34 AM Carmarthen station (CMN)	3h35	1:09 PM London Paddington (PAD)	1 transfer
G38977+W35438	On time 10:34 AM Carmarthen station (CMN)	3h35	2:09 PM London Paddington (PAD)	1 transfer
W35439	On time 11:25 AM Carmarthen station (CMN)	3h44	3:09 PM London Paddington (PAD)	0 transfersDirect
G38986+W35220	On time 12:31 PM Carmarthen station (CMN)	3h38	4:09 PM London Paddington (PAD)	1 transfer
G38326+W35442	On time 1:34 PM Carmarthen station (CMN)	3h35	5:09 PM London Paddington (PAD)	1 transfer
C00125	On time 2:15 PM Carmarthen station (CMN)	3h54	6:09 PM London Paddington (PAD)	0 transfersDirect
G38994+C00125	On time 2:28 PM Carmarthen station (CMN)	3h41	6:09 PM London Paddington (PAD)	1 transfer
G38444+W35445	On time 3:08 PM Carmarthen station (CMN)	4h01	7:09 PM London Paddington (PAD)	1 transfer
W35246	On time 4:30 PM Carmarthen station (CMN)	3h39	8:09 PM London Paddington (PAD)	0 transfersDirect
G39002+C00139	On time 4:41 PM Carmarthen station (CMN)	4h33	9:14 PM London Paddington (PAD)	1 transfer
G38446+W35446	On time 5:44 PM Carmarthen station (CMN)	4h30	10:14 PM London Paddington (PAD)	1 transfer
W35250	On time 7:20 PM Carmarthen station (CMN)	4h07	11:27 PM London Paddington (PAD)	0 transfersDirect
Monday, June 22
G38442+G15040	4:37 AM Carmarthen station (CMN)	3h39	8:16 AM London Paddington (PAD)	1 transfer
W35167+G39158	5:32 AM Carmarthen station (CMN)	3h40	9:12 AM London Paddington (PAD)	1 transfer
G38947+G15041	6:01 AM Carmarthen station (CMN)	4h13	10:14 AM London Paddington (PAD)	1 transfer
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 train or bus

Compare train and bus 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 train and bus 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 train and bus to find the ideal travel option from Carmarthen to London.

How far in advance should I book train tickets from Carmarthen to London?

The best time to book your train from Carmarthen to London is 7 days before departure. See how prices for trains change on the Carmarthen to London route.

Prices are for one-way tickets for one passenger from Carmarthen to London per month. Insights are sourced from fares found by Omio users in the last 12 months. Current prices may differ as prices vary depending on the time of day, class or how far in advance you book your train from Carmarthen to London.

Trains

from $81

Journey information

Overview: Train from Carmarthen to London

United Kingdom

Trains from Carmarthen to London run on average 7 times per day, taking around 3h 54m. Cheap train tickets for this journey start at $73 (€60) but you can travel from only $24 (€19) by bus.

There are 2 trains per day. The earliest train runs at 03:27, the last at 22:49. The fastest train covers the 180 miles (291 km) distance in 3h 42m.

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

Bus from $24 (€19)

Distance

180 miles (291 km)

Average train duration

3h 54m

Cheapest ticket price

$73 (€60)

Trains per day

Direct trains

Fastest train

3h 42m

First train

3:27 AM

Last train

10:49 PM

Cheapest Month

Feb

Cheapest Day

Wed

High Season

Jan - Mar

Low Season

Apr - Jun

Busiest Day

Mon

Least Busy Day

Sat

Best time to book

70 days

Price information

Cheapest alternative travel mode

Bus from $24 (€19)

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 $24 (€19). 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 Duration

3h 42m

Cheapest Price

$73 (€60)

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 Duration

4h 46m

Cheapest Price

$97 (€79)

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

Learn more about Transport for Wales

Great Western Railway (GWR)

Luggage & cancellation policy

Average Duration

3h 39m

Cheapest Price

$232 (€190)

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-famous museum with major collections spanning ancient Egypt, Greece, Rome, and Asia. A top choice for first-time visitors.

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Must visit

The National Gallery

Major art museum on Trafalgar Square with masterpieces by Van Gogh, Turner, Monet, and da Vinci. Essential for European painting.

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Must visit

Tate Modern

Leading modern and contemporary art gallery in a former power station on the Thames. Popular for its collection and river views.

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Pound Sterling

London is expensive by UK standards. Hotels, transport, and dining add up quickly, though budget eats and free museums help control costs.

Average meal costs

Budget: GBP 8-15 for street food or a simple meal.
Mid-range: GBP 20-40 per person at a casual restaurant.
Fine dining: GBP 80+ per person at upscale restaurants.
Coffee: GBP 3-5 for a regular coffee.

Tipping culture

Service is often included in restaurants as a 12.5% charge. If not, tip 10-12%. No tip needed in pubs for drinks. Round up taxi fares or add about 10%.

FAQs: Trains from Carmarthen to London

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.

Train ticket prices from Carmarthen to London can vary. The cheapest ticket starts at $73 (€60), while the average price is around $87 (€72).

The train from Carmarthen to London takes 3h 42m and runs 7 per day.

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

The distance by train from Carmarthen to London is 180 miles (291 km).

The last train from Carmarthen to London leaves at 10:49 PM.

There is no high speed train available from Carmarthen to London.

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

Unfortunately, there is no night train available from Carmarthen to London.

The train station in Carmarthen that goes to London is Carmarthen station (CMN), which connects to London Paddington (PAD).

The cheapest way to get from Carmarthen to London is by bus, with a cost of around $24 (€19).

The train journey from Carmarthen to London offers scenic views, particularly as it passes through the rolling hills and countryside of South Wales and along sections of the Severn Estuary before reaching the more urban landscapes approaching London.

A day trip from Carmarthen to London is not feasible as the journey takes 3h 42m each way. Trains run 6 times per day over a distance of 180 miles (291 km).

In London, you can enjoy panoramic views of the city from The London Eye, visit the vibrant West End Theatre District for high-quality shows, and explore Camden Market's eclectic mix of food, fashion, and crafts. A walk through Hyde Park offers beautiful landscapes and recreational activities, while art lovers can visit the Tate Modern. Don't miss The British Museum's vast collection of art and antiquities, the historic Tower of London with its Crown Jewels, and Buckingham Palace. Iconic landmarks like The Houses of Parliament and Big Ben, along with St. Paul's Cathedral, offer a glimpse into the city's rich history and architecture.

For a comprehensive experience of London's top attractions, cultural sites, and local neighborhoods, it is recommended to spend around 3 to 5 days in the city. This allows time to explore major landmarks such as the British Museum, Tower of London, and Buckingham Palace, as well as enjoy local markets and parks.

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

Since neither Carmarthen nor London are in the Schengen Area, passport requirements depend on the specific immigration rules of United Kingdom and United Kingdom. Entry and visa requirements can be subject to change. For the latest information, check with your destination's embassy or consulate.

Popular day trips by train from London include Oxford, Cambridge, Brighton, Stevenage, Canterbury.

We recommend using the train as it is the most popular way to get from Carmarthen to London among Omio's users.

Items not allowed on trains typically include hazardous materials such as explosives, flammable liquids, corrosive substances, and illegal drugs. Additionally, large or bulky items that may obstruct aisles or emergency exits, as well as pets without proper carriers, may be restricted. Specific prohibited items can vary by train operator and region, so please check the rules for your particular journey.

Yes, rail passes such as the BritRail Pass are valid on most trains within the United Kingdom, offering unlimited travel on participating train operators for a set period.

The currency used in the United Kingdom is the British Pound Sterling (GBP). For travelers, using a card is generally more convenient and widely accepted, especially in cities and for transportation tickets, though carrying some cash can be useful for small purchases or in rural areas.

In London, travelers should be cautious of pickpocketing, especially in crowded areas like public transport, markets, and popular tourist sites. Common scams include fake charity collectors, overcharging by unlicensed taxi drivers, and distraction techniques used by thieves. Always use official black cabs or licensed minicabs booked through reputable apps, and keep personal belongings secure to reduce risks. Staying vigilant in busy locations and avoiding unsolicited offers helps ensure a safer visit.

Pack lightweight, versatile clothing suitable for the destination's climate, and use secure, lockable luggage to protect belongings. Keep essential items like travel documents, medication, and valuables in a carry-on bag for easy access. Use packing organizers or cubes to maximize space and maintain order. Lastly, include a small first aid kit and personal hygiene items for added comfort during travel.

popular train stations

Popular train stations from Carmarthen to 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 · $1 · 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 · $5 · every ~6 min

36 · 31m · $28 · every ~29 min

N205 · 32m · $5 · every ~2 min

46 · 1h 22m · $2 · every ~19 min

SubwayBakerloo · 12m · $5 · 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.