The cheapest and fastest trains from London to Carmarthen
Cheapest price
$94
Average price
$118
Fastest journey
3 h 33 m
Average duration
3 h 41 m
Trains per day
6
Distance
291 km
The best way to find a cheap train ticket from London to Carmarthen is to book your journey as far in advance as possible and to avoid traveling at rush hour.
The average ticket from London to Carmarthen will cost around $118 if you buy it on the day, but the cheapest tickets can be found for only $94.
Of the 6 trains that leave London for Carmarthen on Fri, May 08, 3 travel direct so it’s quite easy to avoid journeys where you’ll have to change along the way.
On Fri, May 08 the direct trains cover the 291 km distance in an average of 3 h 41 m but if you time it right, some trains will get you there in just 3 h 33 m .
On Fri, May 08 the slowest trains will take 3 h 44 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.
P2262611:48 AM3h41London Paddington (PAD)3:29 PMCarmarthen station (CMN)$941One-way0 transfers
P226301:48 PM3h33London Paddington (PAD)5:21 PMCarmarthen station (CMN)$1001One-way0 transfers
P22628+
L6472612:48 PM3h44London Paddington (PAD)4:32 PMCarmarthen station (CMN)$1011One-way1 transfer
P22624+
L6472210:48 AM3h44London Paddington (PAD)2:32 PMCarmarthen station (CMN)$1011One-way1 transfer
P226229:48 AM3h42London Paddington (PAD)1:30 PMCarmarthen station (CMN)$1311One-way0 transfers
P226301:48 PM3h33London Paddington (PAD)5:21 PMCarmarthen station (CMN)$1001One-way0 transfers
P2262611:48 AM3h41London Paddington (PAD)3:29 PMCarmarthen station (CMN)$941One-way0 transfers
P226229:48 AM3h42London Paddington (PAD)1:30 PMCarmarthen station (CMN)$1311One-way0 transfers
P22628+
L6472612:48 PM3h44London Paddington (PAD)4:32 PMCarmarthen station (CMN)$1011One-way1 transfer
P22624+
L6472210:48 AM3h44London Paddington (PAD)2:32 PMCarmarthen station (CMN)$1011One-way1 transfer
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 prices starting from $24. 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 bus costs an average of $24, and a train costs an average of $83.
Distance: 180 miles (291 km)
Compare train with
Most popular Train | Bus | Driving |
|---|---|---|
$94 Average price | $37 Average price Cheapest | $97 Average price (fuel + tolls) |
4h 13m Average total duration Fastest 3h 43m Onboard + 30m Additional time* | 6h 14m Average total duration 5h 44m 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 $57 (€45) less than a train for this route with tickets for a train from London to Carmarthen costing on average $94 (€75).
Other travel options to Carmarthen take longer:
Bus takes on average 5h 44m.
The journey is about 14m faster (3h 43m by train vs 3h 57m by car) and roughly $3 (€2) cheaper once you factor in fuel and tolls ($94 (€75) vs $97 (€77)). 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.
Direct services run with Great Western Railway, first_great_western.
Driving is still worth considering if you want to stop along the way or need a car once you arrive.
Live departures
London to Carmarthen train times
The table below shows live departures for London to Carmarthen trains for today, Thursday, May 7. You can also manually refresh the results below to see updated train journeys.
| Provider | Departs | Duration | Arrives | Transfers | Tickets |
|---|---|---|---|---|---|
P22620+ L64718 | 8:48 AM London Paddington (PAD) | 3h51 | 12:39 PM Carmarthen station (CMN) | 1 transfer | |
P22622 | 9:48 AM London Paddington (PAD) | 3h42 | 1:30 PM Carmarthen station (CMN) | 0 transfersDirect | |
P22624+ L64722 | 10:48 AM London Paddington (PAD) | 3h44 | 2:32 PM Carmarthen station (CMN) | 1 transfer | |
P22626 | 11:48 AM London Paddington (PAD) | 3h41 | 3:29 PM Carmarthen station (CMN) | 0 transfersDirect | |
P22628+ L64726 | 12:48 PM London Paddington (PAD) | 3h44 | 4:32 PM Carmarthen station (CMN) | 1 transfer | |
P22630 | 1:48 PM London Paddington (PAD) | 3h33 | 5:21 PM Carmarthen station (CMN) | 0 transfersDirect | |
This is the last train of the day. | |||||
Find all the dates and times for this journey
Compare prices and tickets London to Carmarthen by train or bus
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.
May 07
May 08
May 09
May 10
May 11
May 12
May 13
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May 15
May 16
May 17
May 18
May 19
May 20
May 21
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May 27
Why should you book London to Carmarthen trains with Omio?
Why book with Omio vs Great Western Railway?
- Compare with other providers: On Omio, you can not only buy tickets for Great Western Railway, but also compare tickets for the likes of first_great_western to find the best option for your trip from London to Carmarthen.
- 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 Great Western Railway 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: Train from London to Carmarthen
Trains from London to Carmarthen run on average 6 times per day, taking around 3h 43m. Cheap train tickets for this journey start at $83 (€66) but you can travel from only $24 (€19) by bus.
There are 2 trains per day. The earliest train runs at 03:27, the last at 22:49. The fastest train covers the 180 miles (291 km) distance in 3h 33m.
Distance 180 miles (291 km) |
Average train duration 3h 43m |
Cheapest ticket price $83 (€66) |
Trains per day 6 |
Direct trains 2 |
Fastest train 3h 33m |
First train 3:27 AM |
Last train 10:49 PM |
Cheapest Month Jun |
Cheapest Day Sat |
High Season Jan - Mar |
Low Season Apr - Jun |
Busiest Day Fri |
Least Busy Day Mon |
Best time to book 63 days |
Train companies: Great Western Railway, first_great_western from London to Carmarthen trainsGreat Western Railway, first_great_western trains will get you between London and Carmarthen from $24 (€19). With over 1000 travel companies on Omio, you can find the best train times and tickets for your trip.
Great Western Railway
first_great_western
FAQs: Trains from London to Carmarthen
Find answers to the most common questions about traveling from London to Carmarthen by train. 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 train, the cheapest option, or tips for making the most of your visit at Carmarthen, this guide helps you travel smarter and with confidence.

popular train stations
Popular train stations from London to Carmarthen
- 24/7
- Free Wi-Fi in the station.
- Luggage lockers are located near the taxi stand beside Platform 11.
- Type of shops available: News agent Flower stall Shoe repairer Wide range of shops Mini supermarket Pharmacy Convenience store High street shops Off Licence Passport Photo Booth
- Car Park: Station Car Park
- Wasabi
- The Beer House
- Barburrito
- Upper Crust
- The Mad Bishop & Bear (Fullers)
- The Pasty Shop
- Burger King
- Pret a Manger
- The Savanna
- Soboro Bakery
- & more
- Taxi: The taxi deck is situated above Platform 12 and is accessed via the concourse and platform 12, which has escalators and lifts to the upper level to the covered marshalled taxi rank. A queuing system is in operation. There is also a separate collection point for pre-booked taxis and a drop off point
- Accessible taxis: All London Black Cabs can accommodate wheelchair passengers without wheelchair users having to leave their wheelchair. There is also a separate collection point for prebooked taxis also further away from the lifts.
- Wheelchair access, escalators, elevators.
- Toilets Location: Accessible toilets are located on Platforms' 1 and 12. A Changing Places facility is located on Platform 12. There are dedicated breastfeeding rooms / Parent & Baby rooms; within the Ladies toilets on Platform 1 within the public toilets on Platform 12.
- National key toilets: Yes
- National key toilets location: Accessible toilets are located on Platforms 1 and 12.
- Baby changing facilities: Yes
- Hilton London Paddington
- Mercure London Paddington Hotel
- The Pilgrm
- Waiting rooms location: Platform 12
- 24/7
- Storage sheltered: Yes
- Storage location: On platform 8/9 and 10
- Storage CCTV: Yes
- Located near Platform 1.
- Underground lines: Bakerloo Line, Circle Line, District Line, Hammersmith Line
- Bus lines: N7, 23, 27, N27, 36, 205, N205, 332, 7, 46, A1, 18, N18
- Train lines: Great Western Main Line, Heathrow Express
- Metro: Tube Lines.
- Opening hours: Monday - Sunday 05:00 - 23:59
- Car Park: No
- Staff help available: Yes
- Step free access coverage: Yes
- Step free access note: Level access to platforms, lifts to airport facilities. Ticket Office is step free. Wheelchair users can board trains with ease as the platforms are level with the trains.
- Accessible ticket machines: There are accessible ticket machines at this station
- Accessible toilets: Yes
- Ramp for train access: No
- Wheelchairs available: Yes
- Impaired mobility set down / pick up points available: No
- National key toilets: No
- Baby changing facilities: Yes
- Onward travel information: National Rail trains serving London Paddington National Express coaches to Victoria Coach Station and Gatwick Airport London Underground
- Metro: Connection available with the London Underground (Piccadilly Line)
- Opening hours: Monday - Sunday 05:00 - 23:59
- Car Park: No
- Staff help available: Yes
- Step free access coverage: Yes
- Step free access note: Level access to platforms, lifts to airport facilities. Ticket Office is step free. Wheelchair users can board trains with ease as the platforms are level with the trains.
- Accessible ticket machines: There are accessible ticket machines at this station
- Ramp for train access: Yes
- Wheelchairs available: Yes
- Impaired mobility set down / pick up points available: No
- Opening hours: Monday - Friday 06:45 - 18:00
- Type of shops available: News agent
- Car Park: Station Car Park
- Staff help available: Yes
- Step free access coverage: Yes
- Step free access note: Category B1. Step free access is available to Platform 1. Platform 2 can be accessed via the ramp at the end of Platform 1 and across a foot crossing.
- Accessible car park equipment: Wheelchair users can use car park equipment at this station unaided
- Accessible ticket machines: There are accessible ticket machines at this station
- Accessible toilets: Yes
- Ramp for train access: Yes
- Wheelchairs available: Yes
- Impaired mobility set down / pick up points available: No
- Toilets Location: The toilets are located on Platform 1. The National key toilets are located on Platform 1; these toilets are operated by a radar key.
- National key toilets: Yes
- Baby changing facilities: No
- Storage sheltered: No
- Storage location: On Platform 1
- Storage CCTV: Yes
- Location for Rail Replacement Services: Wait at the bus stop opposite the station entrance
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