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 $23. 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 $23, and a train costs an average of $82.
Distance: 180 miles (291 km)
Compare train with
Most popular Train | Bus |
|---|---|
$92 Average price | $34 Average price Cheapest |
4h 24m Average total duration Fastest 3h 54m Onboard + 30m Additional time* | 6h 36m Average total duration 6h 6m Onboard + 30m Additional time* |
0.1 - 0.3kg CO2 emissions Lowest | 0.3 - 0.7kg CO2 emissions |
![]() Most popular train company | ![]() Most popular bus company |
Direct Options | Direct Options |
Additional time: Average total travel duration to departure point, security checks and transfers.
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.
NX508Cheapest
NX508Fastest
L65016+
P22807Other options
P22801
P22805
L64996+
P22799
NX112 · NX507Find 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 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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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 $58 (€47) less than a train for this route with tickets for a train from Carmarthen to London costing on average $82 (€66).
Other travel options to London take longer:
Bus takes on average 6h 10m.
- Around 6 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 train and bus 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 Rail, Transport for Wales, first_great_western, Transport for Wales to go to London by train.
- 1 direct buses per day with National Express.
- 2 direct trains per day with Great Western Rail, first_great_western.
Travelling from Carmarthen to London: related information
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