Trains tickets from Carmarthen to London

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Today28 Apr
from US$88
Tomorrow29 Apr
Wed30 Apr
Thu1 May
Fri2 May
Sat3 May
Sun4 May
Mon5 May

Trains leaving today

One passenger / one way

  • This trip is recommended because it is the: Cheapest
    Departure time: 28 April at
    Departure city: Carmarthen
    Departure location: Carmarthen
    Arrival time: 28 April at
    Destination city: London
    Destination location: London Paddington
    Operated by: Great Western RailwayGreat Western Railway
    Vehicle: TrainDuration:
  • This trip is recommended because it is the: Fastest
    Departure time: 28 April at
    Departure city: Carmarthen
    Departure location: Carmarthen
    Arrival time: 28 April at
    Destination city: London
    Destination location: London Paddington
    Operated by: Great Western RailwayGreat Western Railway
    Vehicle: TrainDuration:
  • Departure time: 28 April at
    Departure city: Carmarthen
    Departure location: Carmarthen
    Arrival time: 28 April at
    Destination city: London
    Destination location: London Paddington
    Operated by: Great Western RailwayGreat Western Railway
    Vehicle: TrainDuration:
  • Departure time: 28 April at
    Departure city: Carmarthen
    Departure location: Carmarthen
    Arrival time: 28 April at
    Destination city: London
    Destination location: London Paddington
    Operated by: Great Western RailwayGreat Western Railway
    Vehicle: TrainDuration:
  • Departure time: 28 April at
    Departure city: Carmarthen
    Departure location: Carmarthen
    Arrival time: 28 April at
    Destination city: London
    Destination location: London Paddington
    Operated by: Great Western RailwayGreat Western Railway
    Vehicle: TrainDuration:

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Compare 3 ways to travel from Carmarthen to London

Bus
Average priceUS$18 - US$51Average duration6h 10m
7kg CO₂e5 out of 5 stars
CheapestMost eco-friendly
Train
Average priceUS$67 - US$175Average duration3h 50m
7kg CO₂e5 out of 5 stars
Carpool
Average priceUS$36 - US$42Average duration3h 20m
12kg CO₂e4 out of 5 stars
Fastest
busbud logoBusbud recommends carpooling from Carmarthen to London

Among the sustainable travel choices, the carpool stands out as a good way to reach London. The journey takes about 3 hours 20 minutes and with fares starting at just US$36, it presents an excellent value for a comfortable ride.

1carpool per day
3h 20mAverage duration
US$36Cheapest ticket
12kgCO₂ emissions

Train Carmarthen to London: Trip Overview

Please note, this information is subject to change.

Average ticket priceUS$97
Average train trip duration3h 50m
Number of daily trains4
Earliest train departure07:23
Distance178 miles
Latest train departure19:20

Carmarthen to London Train

With Busbud, comparing and booking tickets for a train from Carmarthen to London is a breeze. Browse through an extensive selection of train fares and train schedules to find the best deals.

We make it our job to connect you with the most dependable companies that offer train services from Carmarthen to London.

From train tickets to high-end trains trip from Carmarthen to London, we offer a wide range of train services to best suit your needs depending on how much your budget is.

Frequently asked questions on the trip Carmarthen - London

  1. How much does a cheap train ticket from Carmarthen to London cost?

    The average train ticket price from Carmarthen to London is US$97. The best way to find cheap train tickets from Carmarthen to London is to book your tickets as early as possible. Prices tend to rise as your travel date approaches, so book in advance to secure the best prices!

  2. How long is the train trip from Carmarthen to London?

    A train trip between Carmarthen and London is around 3h 50m, although the fastest train will take about 3h 39m. This is the time it takes to travel the 181 miles that separates the two cities.

  3. How many daily train are there between Carmarthen and London?

    The number of trains from Carmarthen to London can differ depending on the day of the week. On average, there are 4. Some trains are direct while others include transferring trains. Simplify your train trip from Carmarthen to London by comparing and selecting the train that fits your travel style and budget on Busbud.

Find cheapest prices for trains

Price is for a one-way ticket for one passenger and based on past searches.

Best price found
26/04
No data
27/04
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Today
US$88
29/04
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30/04
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01/05
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02/05
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03/05
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busbud logoThe cheapest trip from Carmarthen to London was searched and found on 28 Apr 2025 with a price of US$88

To save money and be sure you have the best seat, it's a good idea to buy your train tickets from Carmarthen to London as early as possible.

About Train Travel

Train Travel Tips

Taking the fastest trains allows you to travel at speeds greater than 300 km/h. Taking a trip from Carmarthen to London is not only much quicker but more comfortable too! You can usually travel directly to the city centre and save time while you're at it.

Whether you take a regional or high-speed train to London, you’ll help reduce the environmental impact and carbon footprint of your trip. As you watch the landscapes unfold before your eyes, you can tell yourself that with this choice, you are making sure they remain protected.

The train emits up to 30x less CO2 for a trip between Carmarthen and London compared to the same trip made by plane or car. A truly ecological mode of transport that will allow you to easily reduce your carbon footprint.

Tune out to the fine sounds of your best music playlist on your train trip from Carmarthen to London while indulging in miles on end of beautiful scenic views.

Did you know?

You can find the straightest railway in the world in Australia. This railway line is 478 kilometres long and is also considered the longest and straightest railway line in the world.

One of the deepest train stations in the world is in Kiev. Located at a depth of 105m, it was designed in this way to serve as a shelter in the event of an attack. The second deepest station is in China. Badaling station is located 60m under the Great Wall of China!

Railway companies played a major role as early as 1883 in the use of time zones as we know them today.

Will you be returning to Carmarthen by train?

Train from London to Carmarthen

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