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Outbound fromCarmarthen to Heathrow Airport by train
It takes an average of 6h 24m to travel from Carmarthen to Heathrow Airport by train, over a distance of around 167 miles (269 km). There are normally 123 trains per day travelling from Carmarthen to Heathrow Airport and tickets for this journey start from £43.50 when you book in advance.
| First train | 03:36 | |
|---|---|---|
| Last train | 23:16 | |
| Departure station | Carmarthen | |
| Arrival station | Heathrow Airport | |
| Journey time | From 4h 6m | |
| Distance | 167 miles (269 km) | |
| Frequency | 123 trains per day | |
| Changes | 1 change | |
| Price | From £43.50 | |
| Train operators | Great Western Railway, Heathrow Express, Transport for Wales |
Travel from Carmarthen to Heathrow Airport by train in 4 hours 6 minutes
If you want to know more about the journey from Carmarthen to Heathrow Airport by train, look no further!
The average journey time from Carmarthen to Heathrow Airport by train is 6 hours 24 minutes, although on the fastest services it can take just 4 hours 6 minutes. You'll usually find 123 trains per day travelling the 167 miles (269 km) between these two destinations. You'll need to make 1 change along the way to Heathrow Airport. You'll be travelling with Great Western Railway, Transport for Wales or Heathrow Express on your way to Heathrow Airport, as these are the main rail operators on this route.
Plan your trip ahead of time and book early if you want to snap up the cheapest fares. Tickets from Carmarthen to Heathrow Airport start from £43.50 when you book in advance, so use our Journey Planner to view the latest prices. Travelling Off-Peak or using a Railcard are also great ways to save.
Keep reading for more information about the train journey to Heathrow Airport, including FAQs, and tips on booking cheap train tickets. Check the timetable above for live train times or if you're ready to book, just start a search for tickets with us today.
Journey details
Want to know more about your journey from Carmarthen to Heathrow Airport? We've compiled some of the most frequently asked questions by our customers to help you plan your journey.
How long does the train from Carmarthen to Heathrow Airport take?
The average journey time by train between Carmarthen and Heathrow Airport is 6 hours and 24 minutes, with around 123 trains per day. The journey time may be longer on weekends and holidays, so use our Journey Planner on this page to search for a specific travel date.
What's the fastest journey time between Carmarthen and Heathrow Airport by train?
The fastest journey time by train from Carmarthen to Heathrow Airport is 4 hours and 6 minutes.
How much does the train from Carmarthen to Heathrow Airport cost?
Train ticket prices from Carmarthen to Heathrow Airport can start from as little as £43.50 when you book in advance. The cost of tickets can vary depending on the time of day, route and class you book and are usually more expensive if you book on the day.
Is there a direct train from Carmarthen to Heathrow Airport?
No, there are no direct train services from Carmarthen to Heathrow Airport. Travelling from Carmarthen to Heathrow Airport by train will require a minimum of 1 change.
What time does the first train from Carmarthen to Heathrow Airport leave?
The first train from Carmarthen to Heathrow Airport leaves at 03:36. Times and services may vary during weekends and holidays.
What time does the last train from Carmarthen to Heathrow Airport leave?
The last train from Carmarthen to Heathrow Airport leaves at 23:16. Trains that depart in the early morning hours or very late evening may be sleeper services, time and services may also vary during weekends and holidays.
What's the distance between Carmarthen and Heathrow Airport by train?
Trains travelling from Carmarthen to Heathrow Airport cover a distance of around 167 miles (269 km) during the journey.
Looking for more information?
If you’re looking for the return train journey, check out trains from Heathrow Airport to Carmarthen.
Cheap train tickets from Carmarthen to Heathrow Airport
Book in advance
Look out for Advance tickets – they usually come out up to 12 weeks before the departure date and can be cheaper than buying on the day. If you’re here a tad early, sign up for our Advance ticket alert today to get notified when your tickets are released.
Consider a Season Ticket
If you catch this train more than 3 times per week, you could save money with a Season Ticket. With annual, monthly and weekly options available, find out if a season ticket for Carmarthen to Heathrow Airport is right for you.
Use your Railcard
National Railcards offer a 1/3 off eligible train tickets in the UK and can be a great investment if you travel a few times or more in a year. Find out how you can save with a National Railcard here.
Split your tickets
Download our app to find split tickets — courtesy of SplitSave, our handy feature which 'splits' your train tickets where possible to find you a better deal. Learn more about the clever tech behind split tickets, and how to spot SplitSave discounts in our app.
For more money-saving tips on UK and European train travel, read our cheap train tickets guide.