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Trains from Heathrow Airport to Carmarthen

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CrossCountry
Great Western Railway

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Each fare is the lowest adult economy ticket fare found by our customers on Trainline. Fares booked further in advance than the dates displayed may be cheaper. Prices are updated daily, subject to change and indicative of price last update. Limited availability. Discount cards and coach journeys excluded, prices exclusive of booking fee.
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  3. Heathrow Airport to Carmarthen

Trains to Carmarthen from Heathrow Airport

It takes an average of 5h 39m to travel from Heathrow Airport to Carmarthen by train, over a distance of around 167 miles (269 km). There are normally 101 trains per day travelling from Heathrow Airport to Carmarthen and tickets for this journey start from £53.50 when you book in advance.

First train

03:55

Last train

22:57

Departure stationHeathrow Airport
Arrival stationCarmarthen
Journey time

From 3h 59m

Distance

167 miles (269 km)

Frequency

101 trains per day

Changes

1 change

Price

From £53.50

Train operators

CrossCountry, Great Western Railway, Heathrow Express, Transport for Wales

Plan your journey from Heathrow Airport to Carmarthen

Considering a trip to Carmarthen and need more information on how to take the train from Heathrow Airport to Carmarthen? Start your search with us today!

Usually, the train from Heathrow Airport to Carmarthen takes around 5 hours 39 minutes. Every day, there are around 101 trains running on this popular route.

There will be 1 change on your journey from Heathrow Airport to Carmarthen, as there are no direct trains.

Great Western Railway, Transport for Wales, CrossCountry and Heathrow Express trains run on this route.

From Heathrow Airport to Carmarthen, tickets start from just £53.50. Booking tickets in advance can be cheaper than buying on the day of travel.

Use our Journey Planner to pick the dates and times you want to travel, and we’ll give you all the options.

What do people frequently ask about the train journey from Heathrow Airport to Carmarthen?

Want to know more about your journey from Heathrow Airport to Carmarthen? We've compiled some of the most frequently asked questions by our customers to help you plan your journey.

How do you get to Carmarthen from Heathrow Airport?

To travel to Carmarthen from Heathrow Airport, you can take the train - on average, the journey takes around 5 hours and 39 minutes, though the fastest trains can take 3 hours and 59 minutes. Use our Journey Planner to get more information.

How long is the train ride from Heathrow Airport to Carmarthen?

Trains from Heathrow Airport to Carmarthen take an average of 5 hours and 39 minutes, although on the fastest services it can take just 3 hours and 59 minutes. You'll usually find 101 trains per day on this route, so use our Journey Planner to check specific dates as times may vary.

How much does it cost to get from Heathrow Airport to Carmarthen by train?

Train tickets from Heathrow Airport to Carmarthen can start from £53.50 when booked in advance, but they’re usually more expensive if bought on the day of travel. Prices may also vary depending on the time of day, route, and class you choose.

What is the quickest journey time between Heathrow Airport and Carmarthen by train?

The quickest journey time between Heathrow Airport and Carmarthen by train is 3 hours and 59 minutes.

How do I find cheap train tickets from Heathrow Airport to Carmarthen?

As most UK train companies increase their prices as the departure date approaches, our Trainline team of experts have put together these tips to help you find the cheapest tickets.

1. Book in advance

Train tickets from Heathrow Airport to Carmarthen start at £53.50§ one way for a Standard Class ticket if you book in advance. UK train companies usually release Advance tickets up to 12 weeks ahead of time, and these can be cheaper than tickets bought on the day of travel.

2. Sign up to Ticket Alert

If you're planning a trip more than 12 weeks ahead, sign up to our Ticket Alert to get notified when Advance tickets are released for your travel date.

3. Use a Railcard

National Railcards offer a 1/3 off eligible train tickets in the UK and can be a great investment if you travel throughout the year. Buy one with us and you'll be able to store it digitally in our app, so you'll always have it on your travels.

4. Book split tickets

Our handy feature SplitSave will 'split' your train journey into multiple tickets, which can be much cheaper than buying a single ticket. Find out more about split tickets.

5. Travel Off-Peak

If you can be flexible with your travel times, Off-Peak and Super Off-Peak tickets are usually cheaper in the UK. Generally, Off-Peak times are any time at weekends and outside of Monday to Friday morning and evening rush hours.

6. Consider a Season Ticket

Best for commuters, if you catch a train on the same route more than 3 times per week, you could save money with a Season Ticket. With annual, monthly, weekly and flexi options available, find out if a Season Ticket for Heathrow Airport to Carmarthen is right for you.

For more money-saving tips on UK and European train travel, read our cheap train tickets guide.

§Advance adult single fare. Excludes booking fee. Prices seen by Trainline customers in the last 30 days. Availability limited.
† Average savings on advance fares booked at least one week before day of travel vs Anytime fares purchased on day of travel. Subject to availability. Excludes coach.

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