Travel Information
Compare train and bus 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 bus, with an average ticket price of $35 For those with little time, consider booking a train, which has an average total journey time of 4h 25m. 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 $35, while a train costs an average of $94.
Distance: 180 miles (291 km)
Compare train with
Most popular Train | Bus | Driving |
|---|---|---|
$94 Average price | $35 Average price Cheapest | $95 Average price (fuel + tolls) |
4h 25m Average total duration Fastest 3h 55m Onboard + 30m Additional time* | 6h 23m Average total duration 5h 53m Onboard + 30m Additional time* | 3h 57m 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.
This is compared to other travel options from London to Carmarthen:
A bus is $59 less than a train for this route with tickets for a train from London to Carmarthen costing on average $94.
Other travel options to Carmarthen take longer:
Bus takes on average 6h 23m.
The journey is about 2m faster (3h 55m by train vs 3h 57m by car) and roughly $0.67 cheaper once you factor in fuel and tolls ($94 vs $95). 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 London to Carmarthen
How to get from London to Carmarthen by train, bus or flight.
Our recommendation
The best way to travel from London to Carmarthen is by taking a bus because it’s the best combination of price and speed.
NX50812:00 PM6h30London, Victoria Coach Station6:30 PMCarmarthen, Lammas Street (Rose and Crown Hotel)$301One-way0 transfers
Cheapest
NX50812:00 PM6h30London, Victoria Coach Station6:30 PMCarmarthen, Lammas Street (Rose and Crown Hotel)$301One-way0 transfers
Fastest
W354181:48 PM3h33London Paddington (PAD)5:21 PMCarmarthen station (CMN)$961One-way0 transfers
Other options
W3541711:48 AM3h40London Paddington (PAD)3:28 PMCarmarthen station (CMN)$901One-way0 transfers
W34646+
G388897:18 PM3h37London Paddington (PAD)10:55 PMCarmarthen station (CMN)$981One-way1 transfer
W34630+
G394952:48 PM3h41London Paddington (PAD)6:29 PMCarmarthen station (CMN)$981One-way1 transfer
Find all the dates and times for this journey by train, bus, flight, and ferry .
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FAQs: Travel from London to Carmarthen
Travel to Carmarthen 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 London to Carmarthen.

This is compared to other travel options from London to Carmarthen:
A bus is $59 less than a train for this route with tickets for a train from London to Carmarthen costing on average $94.
Other travel options to Carmarthen take longer:
Bus takes on average 6h 23m.
- Around 7 trains per day.
- Around 2 buses per day.
However, we recommend checking specific travel dates for your route between London and Carmarthen as scheduled services by train and bus can vary by season or day of the week.
- Trains mostly depart from London Paddington (PAD) and arrive in Carmarthen station (CMN).
- Buses mostly depart from London, Victoria Coach Station and arrive in Carmarthen, Lammas Street (Rose and Crown Hotel).
- Travel with Great Western Railway, Transport for Wales, Great Western Railway (GWR) to go to Carmarthen by train.
- Travel with National Express to go to Carmarthen by bus.
- 3 direct trains per day with Great Western Railway, Great Western Railway (GWR).
- 1 direct buses per day with National Express.
Travelling from London to Carmarthen: related information
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