The cheapest and fastest coaches from London to Carmarthen
Cheapest price
£22
Average price
£26
Fastest journey
5 h 45 m
Average duration
6 h 8 m
Buses per day
2
Distance
291 km
The best way to find a cheap coach 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 £26 if you buy it on the day, but you can find cheap coach tickets today for only £22.
Of the 2 buses that leave London for Carmarthen every day 1 travel direct so it’s quite easy to avoid journeys where you’ll have to change along the way.
These direct buses cover the 291 km distance in an average of 6 h 8 m but if you time it right, some buses will get you there in just 5 h 45 m .
The slowest buses will take 6 h 30 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.
NX50812:005h45London, Victoria Coach Station17:45Carmarthen, Lammas Street (Rose and Crown Hotel)£221One-way0 changes
NX507 · NX11210:306h30London, Victoria Coach Station17:00Carmarthen, Lammas Street (Rose and Crown Hotel)£291One-way1 change
NX50812:005h45London, Victoria Coach Station17:45Carmarthen, Lammas Street (Rose and Crown Hotel)£221One-way0 changes
NX507 · NX11210:306h30London, Victoria Coach Station17:00Carmarthen, Lammas Street (Rose and Crown Hotel)£291One-way1 change
Travel 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 43m. 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 £61.
Distance: 291 km
Compare bus with
| Coach | Most popular Train |
|---|---|
£27 Average Price Cheapest | £68 Average Price |
6h 14m Average total duration 5h 44m Onboard + 30m Additional time* | 4h 13m Average total duration Fastest 3h 43m Onboard + 30m Additional time* |
0.3 - 0.7kg CO2 emissions | 0.1 - 0.3kg CO2 emissions Lowest |
![]() Most popular bus company | ![]() Most popular train company |
Direct Options | Direct Options |
Additional time: Average total travel duration to departure point, security checks and transfers.
Live departures
London to Carmarthen bus times
The table below shows live departures for London to Carmarthen coaches for tomorrow, Tuesday 21 April. You can also manually refresh the results below to see updated coach journeys.
| Provider | Departs | Duration | Arrives | Changes | Tickets |
|---|---|---|---|---|---|
NX507 · NX112 | 10:30 London, Victoria Coach Station | 6h30 | 17:00 Carmarthen, Lammas Street (Rose and Crown Hotel) | 1 change | |
NX508 | 12:00 London, Victoria Coach Station | 5h45 | 17:45 Carmarthen, Lammas Street (Rose and Crown Hotel) | 0 changesdirect | |
This is the last bus of the day. | |||||
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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Why should you book London to Carmarthen coaches with Omio?
Why book with Omio vs National Express?
- 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 London to Carmarthen.
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 London to Carmarthen.
Journey information
Overview: Bus from London to Carmarthen
Buses from London to Carmarthen run on average 2 times per day, taking around 5h 44m. Cheap bus tickets for this journey start at £18 if you book in advance.
There are 1 coaches per day. The earliest coach runs at 03:27, the last at 22:49. The fastest coach covers the 291 km distance in 5h 45m.
Distance 291 km |
Average bus duration 5h 44m |
Cheapest ticket price £18 |
Buses per day 2 |
Direct buses 1 |
Fastest bus 5h 45m |
First bus 3:27 |
Last bus 22:49 |
Cheapest Month Feb |
Cheapest Day Wed |
High Season Oct - Dec |
Low Season Apr - Jun |
Busiest Day Thu |
Least Busy Day Fri |
Best time to book 49 days |
Bus providers: National Express from London to CarmarthenYou can travel by bus between London to Carmarthen with National Express for as low as £18. When you search for schedules and tickets, Omio will show you the best journey
National Express
FAQs: London to Carmarthen coach
Find answers to the most common questions about traveling from London to Carmarthen by coach. 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 coach, the cheapest option, or tips for making the most of your visit at Carmarthen, this guide helps you travel smarter and with confidence.

- National Express
- Assistance
- Priority seating
- Accessible toilets.
- 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.
- National Express
- Two medium-sized suitcases up to 20kg each and one small piece of hand luggage.
- National Express
- 10€ per additional bag.
popular bus stations
Important Stations and Airports in London and Carmarthen
- 06:00-23:00
- Free Wi-Fi
- Pret a Manger (in the station)
- Starbucks (in the station).
- Available outside the station on Buckingham Palace Road.
- Elevators, ramps
- Available in the station.
- Bus: 11, 44, 170, 211, C1, C10 Metro: Victoria Train: Southern, Gatwick Express
- The place has an entrance that is wheelchair-accessible
- The place has an entrance that is wheelchair-accessible
Most popular bus connections from London
More options for your journey from London to Carmarthen
Here are some other resources that might have the information you need

