Carmarthen to London bus with National Express

Thu, Aug 06
+ Add return
National Express
Mid Wales Travel
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2,000+ travel companies
National Express
Mid Wales Travel
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BlaBlaCar Bus
2,000+ travel companies
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The cheapest and fastest buses from Carmarthen to London

Showing times and prices for Aug 06

Cheapest price

€39

Average price

€39

Fastest journey

5 h 45 m

Average duration

5 h 58 m

Buses per day

2

Distance

291 km

Cheap tickets

The best way to find a cheap bus 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 €39 if you buy it on the day, but the cheapest tickets can be found for only €39.

Fast buses

Of the 2 buses that leave Carmarthen for London on Thu, Aug 06, 2 travel direct so it’s quite easy to avoid journeys where you’ll have to change along the way.

On Thu, Aug 06 the direct buses cover the 291 km distance in an average of 5 h 58 m but if you time it right, some buses will get you there in just 5 h 45 m .

On Thu, Aug 06 the slowest buses will take 6 h 10 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.

  • National ExpressNX508
    10:55 AM5h45
    Carmarthen, Lammas Street (Rose and Crown Hotel)
    4:40 PMLondon, Earl's Court
    391One-way
    0 transfers
  • National ExpressNX508
    10:55 AM6h10
    Carmarthen, Lammas Street (Rose and Crown Hotel)
    5:05 PMLondon, Victoria Coach Station
    391One-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 €19. 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 €19, and a train costs an average of €60.

Distance: 180 miles (291 km)

Compare bus with

Bus
Most popular
Train
Driving

€27

Average price

Cheapest

€72

Average price

€99

Average price

(fuel + tolls)

6h 38m

Average total duration

6h 8m

Onboard

+

30m

Additional time*

4h 24m

Average total duration

Fastest

3h 54m

Onboard

+

30m

Additional time*

4h 5m

Average total duration

(door-to-door)

0.3 - 0.7kg

CO2 emissions

0.1 - 0.3kg

CO2 emissions

Lowest

-

CO2 emissions

National Express

Most popular bus company

Great Western Railway

Most popular train 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 €27.

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

A bus is €45 less than a train for this route with tickets for a train from Carmarthen to London costing on average €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 bus. It's the cheapest way to make this trip, and the price gap is usually bigger than people expect.

Tickets start at around €27 compared to roughly €99 in fuel and tolls — a saving of about €72. The journey takes 6h 8m versus 4h 5m by car, so you'll arrive a bit later, but you can use the time productively rather than spending it behind the wheel. No parking to sort, no fuel stops, and most coaches have Wi-Fi and power outlets.

Direct services are operated by National Express.

Driving is worth considering if you're on a tight schedule, travelling as a group (where fuel costs split several ways), or want the flexibility to stop along the way.

Carmarthen to London Bus Timetables

OperatorDeparture TimeArrival TimeDurationDeparture daysCheapest price
Operator
National Express
Departure Time
09:35AM
Arrival Time
04:00PM
Duration
6h25
Departure days
Fri
Cheapest price
36
Operator
National Express
Departure Time
10:55AM
Arrival Time
05:05PM
Duration
6h10
Departure days
Everyday
Cheapest price
22

Live departures

Carmarthen to London bus times

The table below shows live departures for Carmarthen to London buses for today, Wednesday, August 5. You can also manually refresh the results below to see updated bus journeys.

Last updated at
ProviderDepartsDurationArrivesTransfers
Tickets
National ExpressNX50810:55 AM Carmarthen, Lammas Street (Rose and Crown Hotel)
6h10
5:05 PM London, Victoria Coach Station0 transfersDirect
National ExpressNX50810:55 AM Carmarthen, Lammas Street (Rose and Crown Hotel)
5h45
4:40 PM London, Earl's Court0 transfersDirect

This is the last bus 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 buses with Omio?

National Express as well as Mid Wales Travel offer buses 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 National Express?

  • Compare with other providers: On Omio, you can not only buy tickets for National Express, but also compare tickets for the likes of Mid Wales Travel 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 National Express 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?

  • 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.

Journey information

Overview: Bus from Carmarthen to London

United KingdomUnited Kingdom
United KingdomUnited Kingdom
Icon of bus

Buses from Carmarthen to London run on average 3 times per day, taking around 6h 8m. Cheap bus tickets for this journey start at €19 if you book in advance.

There are 1 buses per day. The earliest bus runs at 03:27, the last at 22:49. The fastest bus covers the 180 miles (291 km) distance in 6h 10m.

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
Distance
180 miles (291 km)
Average bus duration
6h 8m
Cheapest ticket price
€19
Buses per day
3
Direct buses
1
Fastest bus
6h 10m
First bus
3:27 AM
Last bus
10:49 PM
Cheapest Month
Mar
Cheapest Day
Tue
High Season
Jan - Mar
Low Season
Apr - Jun
Busiest Day
Mon
Least Busy Day
Sat
Best time to book
56 days
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

Bus providers: National Express, Mid Wales Travel from Carmarthen to LondonYou can travel by bus between Carmarthen to London with National Express, Mid Wales Travel for as low as €19. When you search for schedules and tickets, Omio will show you the best journey

National Express

About
National Express is the UK’s leading long-distance coach company, operating over 550 services per day and serving more than 900 destinations nationwide. It also runs frequent services to major UK airports — including Heathrow, Gatwick, Stansted, Luton, and Bristol — 24 hours a day. All National Express coaches are air-conditioned and offer free Wi-Fi and onboard entertainment. Most vehicles are equipped with seat belts and power outlets at every seat, allowing you to charge your phone or laptop during your journey. Ticket options include Restricted Fare, Standard Fare, and Fully Flexible Fare, with the latter providing maximum flexibility for cancellations or changes.
Luggage & cancellation policy
Average Duration
6h 10m
Cheapest Price
€19
National Express frequency
2 a day
Luggage included
Two medium-sized suitcases up to 20kg each and one small piece of hand luggage.
Additional luggage
10€ per additional bag.
Cancellation Policy
You can cancel your ticket up to 24 hours before departure for a refund minus a cancellation fee. Changes can be up to 24 hours before departure for a fee.
Amenities on board the bus
Wifi
Food sold onboard
Seat reservation
Toilets
USB plugs
Accessibility
Assistance; Priority seating; Accessible toilets.
Bikes
Folding Bikes are allowed; non-folding bikes are not allowed.

Mid Wales Travel

Luggage & cancellation policy
Average Duration
25h 42m
Mid Wales Travel frequency
1 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

Vast world museum with the Rosetta Stone, Parthenon sculptures and global antiquities. Essential for history lovers.

  • Must visit

The National Gallery

Leading art museum on Trafalgar Square with masterpieces from Van Gogh, Turner and da Vinci. Free and internationally renowned.

  • Must visit

Victoria and Albert Museum

Grand museum of art, design and performance with fashion, sculpture and decorative arts collections in South Kensington.

British Pound Sterling (£)

Very costly by European standards. Hotels, dining, and transit are pricier than in most UK and EU city breaks, especially in central areas.

Average meal costs

Budget
£8-15 for fast food or casual takeaway.
Mid-range
£20-40 per person for a meal.
Fine dining
£70+ per person for upscale restaurants.
Coffee
£3-5 for a cappuccino.

Tipping culture

Restaurants often add 12.5% service; if not, tip 10-12%. Taxis: round up or 10%. Cafes: optional small change or none.

FAQs: Bus from Carmarthen to London

Find answers to the most common questions about traveling from Carmarthen to London by bus. 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 bus, the cheapest option, or tips for making the most of your visit at London, this guide helps you travel smarter and with confidence.

FAQs
Cheap bus tickets from Carmarthen to London can start from as little as €19 when you book in advance. The average bus ticket price for Carmarthen to London is €27 ; however, prices vary depending on the time of day and class and they tend to be more expensive on the day.
The average journey time by bus from Carmarthen to London is 6h 10m to travel the 180 miles (291 km) long journey. Journey times can vary on weekends and holidays, so use our Journey Planner to search for a specific date.
The earliest bus from Carmarthen to London leaves at 3:27 AM. Plan your trip with the Journey Planner from Omio.
The latest bus from Carmarthen to London leaves at 10:49 PM.
Yes, there are 1 direct buses a day from Carmarthen to London with National Express. Schedules can vary on holidays or weekends with fewer direct buses.
When taking a bus from Carmarthen to London, you can count on National Express, Mid Wales Travel for the best way to get you to London. You can also check all possible bus companies who offer a service between Carmarthen and London and compare the amenities they offer before buying a bus ticket.
When departing from Carmarthen , you have various bus station options to start your journey from including Carmarthen, Lammas Street (Rose and Crown Hotel), St Clears, Pentre Road . When arriving in London , you can end your journey in bus stations like London, Victoria Coach Station, London, Earl's Court, London, Eastbourne Terrace (Paddington Station), London, Hammersmith Bridge Road, London, Heathrow Airport Terminals 2 & 3, London, Heathrow Airport Terminal 5, London, Heathrow Airport Terminal 4, London, York Road (London Eye), London, Baker Street Station, London, Bishopsgate (Liverpool Street Station - Stop G), London, Stratford City Bus Station, London, Western Ave / Friary Road, London, Greenford Roundabout, London, New Cross Gate, London, Lewisham, London, Shoreditch High St / Bethnal Green Road (Stop L), London, Kingsland Road / Middleton Road, London, Finchley Road ("Subway" restaurant), London, Lithos Road .Passengers board the bus most frequently from Carmarthen, Lammas Street (Rose and Crown Hotel), which is located around away from the city centre, and they get off the bus at London, Victoria Coach Station, located 2 away from the city centre.
A trip to London from Carmarthen is worth doing but not as a day trip with a journey time of 6h 10m each way. Check with Omio app the best way to travel.
The cheapest month for a bus from Carmarthen to London is March.
It's helpful to compare your options as there are 2 ways to travel between Carmarthen and London including taking a train and bus.
Yes, the following accessibility options are available when taking the bus from Carmarthen to London:
  • National Express
    • Assistance
    • Priority seating
    • Accessible toilets.
Yes, there are bathrooms on board the bus from Carmarthen to London for bus company National Express.
Some of the most interesting sights to explore in London are:
  • The British Museum, a world-renowned museum housing a vast collection of art and antiquities from around the globe
  • The Tower of London, a historic castle and former royal residence known for its Crown Jewels and rich history
  • Buckingham Palace, the official residence of the British monarch and a symbol of the British monarchy
  • The Houses of Parliament and Big Ben, iconic landmarks representing the political heart of the United Kingdom
  • St. Paul's Cathedral, an architectural masterpiece with a stunning dome and rich history.
The best things to do in London include:
  • The London Eye, a giant Ferris wheel on the South Bank offering panoramic views of the city
  • West End Theatre District, a vibrant area known for its high-quality theatrical productions and musicals
  • Explore Camden Market, a bustling market known for its eclectic mix of food, fashion, and crafts
  • Take a walk through Hyde Park, one of London's largest and most famous parks offering beautiful landscapes and recreational activities
  • Visit the Tate Modern, a contemporary art museum housed in a former power station on the banks of the Thames.
Whether you can cancel your bus ticket from Carmarthen to London depends on the bus companies:
  • National Express
    • You can cancel your ticket up to 24 hours before departure for a refund minus a cancellation fee. Changes can be up to 24 hours before departure for a fee.
Yes, bikes are allowed on board the bus with bus company National Express.
Tickets are often cheaper when booked early. Traveling during off-peak hours or on weekdays can help you save money. Sort results by price to quickly identify the most affordable options. Check for promotions or discounts available on our website and app.
Yes, there is food available to purchase on board the bus from Carmarthen to London.
Yes, the following luggage options are included when booking a bus ticket from Carmarthen to London:
  • National Express
    • Two medium-sized suitcases up to 20kg each and one small piece of hand luggage.
Yes, the following additional luggage options are available when booking a bus ticket from Carmarthen to London:
  • National Express
    • 10€ per additional bag.
Unfortunately, pets are not allowed on the bus from Carmarthen to London.
You can reserve your seat on the bus from Carmarthen to London with the following bus company: National Express
Yes, there are USB plugs on board the bus from Carmarthen to London with the following bus company: National Express.
Yes, there is Wifi on board the bus from Carmarthen to London with the following bus company: National Express.
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.
We recommend using the train as it is the most popular way to get from Carmarthen to London among Omio's users.
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 bus stations

Popular bus stations from Carmarthen to London

Most Carmarthen to London buses use the Carmarthen, Lammas Street (Rose and Crown Hotel) to London, Victoria Coach Station station pair, with some services arriving at London, Earl's Court. Use this guide to compare Carmarthen and London bus stations on this route, check city-centre transport, alongside checking practicalities like bus station facilities and services.

Departure bus stations in Carmarthen
Arrival bus stations in London

Which Carmarthen station do buses to London leave from?

Buses from Carmarthen to London leave from Carmarthen, Lammas Street (Rose and Crown Hotel). The station is from Carmarthen city centre at 2-5 Guildhall Square, Carmarthen SA31 1NP, UK.
Carmarthen, Lammas Street (Rose and Crown Hotel)2-5 Guildhall Square, Carmarthen SA31 1NP, UKAccessibility
City-centre transport

Getting to Carmarthen, Lammas Street (Rose and Crown Hotel) from Carmarthen city centre

BusT1x, 322, T1, T1a · 5m · €1 · every ~4 min

Carmarthen, Lammas Street (Rose and Crown Hotel) bus station facilities and services

Carmarthen, Lammas Street (Rose and Crown Hotel) has practical services for this route, including Accessibility.

Accessibility

Accessibility facilities are available at Carmarthen, Lammas Street (Rose and Crown Hotel): The place has an entrance that is wheelchair-accessible.

Most popular bus connections from Carmarthen

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