Travel Information
Compare bus 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 bus, with an average ticket price of $31 For those with little time, consider booking a train, which has an average total journey time of 4h 33m. 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 bus costs an average of $31, while a train costs an average of $99.
Distance: 180 miles (291 km)
Compare train with
Most popular Train | Bus | Driving |
|---|---|---|
$99 Average price | $31 Average price Cheapest | $119 Average price (fuel + tolls) |
4h 33m Average total duration Fastest 4h 3m Onboard + 30m Additional time* | 6h 25m Average total duration 5h 55m 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.
Compare ways to travel from Carmarthen to London
Compare the available ways to get from Carmarthen to London, with the key details around price, speed, convenience, and direct service.
This is compared to other travel options from Carmarthen to London:
A bus is $68 less than a train for this route with tickets for a train from Carmarthen to London costing on average $99.
Other travel options to London take longer:
Bus takes on average 6h 25m.
The journey is about 2m faster (4h 3m by train vs 4h 5m by car) and roughly $21 cheaper once you factor in fuel and tolls ($99 vs $119). 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.
Driving is still worth considering if you want to stop along the way or need a car once you arrive.
Travel optionsfrom Carmarthen to London
How to get from Carmarthen to London by train, bus or flight.
Our recommendation
The best way to travel from Carmarthen to London is by taking a bus because it’s the best combination of price and speed.
NX50811:10 AM 6h15 Carmarthen, Lammas Street (Rose and Crown Hotel) 5:25 PM London, Earl's Court $27 1 One-way 0 transfers
Cheapest
NX50811:10 AM 6h15 Carmarthen, Lammas Street (Rose and Crown Hotel) 5:25 PM London, Earl's Court $27 1 One-way 0 transfers
Fastest
W35188+
G3920612:30 PM 3h39 Carmarthen station (CMN) 4:09 PM London Paddington (PAD) $98 1 One-way 1 transfer
Other options
W354376:20 PM 3h49 Carmarthen station (CMN) 10:09 PM London Paddington (PAD) $54 1 One-way 0 transfers
G150504:19 PM 3h55 Carmarthen station (CMN) 8:14 PM London Paddington (PAD) $85 1 One-way 0 transfers
W3543411:27 AM 3h45 Carmarthen station (CMN) 3:12 PM London Paddington (PAD) $97 1 One-way 0 transfers
NX50811:10 AM 6h40 Carmarthen, Lammas Street (Rose and Crown Hotel) 5:50 PM London, Victoria Coach Station $27 1 One-way 0 transfers
NX112 · NX5079:50 AM 6h05 Carmarthen, Lammas Street (Rose and Crown Hotel) 3:55 PM London, Earl's Court $33 1 One-way 1 transfer
NX112 · NX5079:50 AM 6h30 Carmarthen, Lammas Street (Rose and Crown Hotel) 4:20 PM London, Victoria Coach Station $33 1 One-way 1 transfer
Find all the dates and times for this journey by train, bus, flight, and ferry .
Compare prices and tickets Prices for trains, buses and flights
Compare bus 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.
More than 1,000 travel companies trust us to sell their tickets all in one place.
FAQs: Travel from Carmarthen to London
Travel to London easily. Whether you want fast, cheap or something entirely different, our travel experts have collected everything you need to know so you can find the best option from Carmarthen to London.

This is compared to other travel options from Carmarthen to London:
A bus is $68 less than a train for this route with tickets for a train from Carmarthen to London costing on average $99.
Other travel options to London take longer:
Bus takes on average 6h 25m.
- Around 19 trains per day.
- Around 3 buses per day.
However, we recommend checking specific travel dates for your route between Carmarthen and London as scheduled services by bus and train can vary by season or day of the week.
- Trains mostly depart from Carmarthen station (CMN) and arrive in London Paddington (PAD).
- Buses mostly depart from Carmarthen, Lammas Street (Rose and Crown Hotel) and arrive in London, Victoria Coach Station.
- Travel with National Express to go to London by bus.
- Travel with Great Western Railway, Transport for Wales to go to London by train.
- 2 direct buses per day with National Express.
- 5 direct trains per day with Great Western Railway.
Travelling from Carmarthen to London: related information
Here are some other resources that might have the information you need
