Travel Information
Compare bus and train for Carmarthen to Cardiff
Omio recommends booking the train as it is the most popular option from Carmarthen to Cardiff among Omio's users. If you are prioritising price take the train with prices starting from €5. For those with little time consider booking a train which can get you there in 1h 51m. In case you are seeking to minimise your carbon footprint the train is your best bet as it emits only 0.0 - 0.1kg. The ticket price range depends on the travel mode: a train costs an average of €5, and a bus costs an average of €9.
Distance: 54 miles (88 km)
Compare train with
Most popular Train | Bus |
|---|---|
€9 Average price Cheapest | €11 Average price |
2h 21m Average total duration Fastest 1h 51m Onboard + 30m Additional time* | 2h 45m Average total duration 2h 15m Onboard + 30m Additional time* |
0.0 - 0.1kg CO2 emissions Lowest | 0.1 - 0.2kg 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 Cardiff
How to get from Carmarthen to Cardiff by train, bus or flight.
Our recommendation
The best way to travel from Carmarthen to Cardiff is by taking a train because it’s the best combination of price and speed.
L64793Cheapest
L64996Fastest
L64996+
P22799Other options
L65006
P22801
L65006+
P22803Find 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.
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FAQs: Travel from Carmarthen to Cardiff
Travel to Cardiff 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 Cardiff.

This is compared to other travel options from Carmarthen to Cardiff:
A train is $5 (€4) less than a bus for this route with tickets for a bus from Carmarthen to Cardiff costing on average $11 (€9).
Other travel options to Cardiff take longer:
Bus takes on average 2h 20m.
- Around 7 trains per day.
- Around 3 buses per day.
However, we recommend checking specific travel dates for your route between Carmarthen and Cardiff 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 Cardiff Central (CDF).
- Buses mostly depart from Carmarthen, Lammas Street (Rose and Crown Hotel) and arrive in Cardiff, Sophia Gardens.
- Travel with Transport for Wales, National Express, Mid Wales Travel to go to Cardiff by bus.
- Travel with Great Western Rail, first_great_western, Transport for Wales to go to Cardiff by train.
- 1 direct buses per day with Transport for Wales, National Express, Mid Wales Travel.
- 4 direct trains per day with Great Western Rail, first_great_western, Transport for Wales.
Travelling from Carmarthen to Cardiff: related information
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