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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.

London to Cardiff Bay by train

It takes an average of 4h 58m to travel from London to Cardiff Bay by train, over a distance of around 131 miles (210 km). There are normally 39 trains per day travelling from London to Cardiff Bay and tickets for this journey start from £45.60 when you book in advance.

First train

04:23

Last train

00:20

Departure station

London

Arrival station

Cardiff Bay

Journey time

From 2h 6m

Distance

131 miles (210 km)

Frequency

39 trains per day

Changes

2 changes

Price

From £45.60

Train operators

CrossCountry, Great Western Railway, South Western Railway, Avanti West Coast, Thameslink, Transport for Wales

Travel from London to Cardiff Bay by train in 2 hours 6 minutes

If you want to know more about the journey from London to Cardiff Bay by train, look no further!

The average journey time from London to Cardiff Bay by train is 4 hours 58 minutes, although on the fastest services it can take just 2 hours 6 minutes. You'll usually find 39 trains per day travelling the 131 miles (210 km) between these two destinations. You'll need to make 2 changes along the way to Cardiff Bay. You'll be travelling with Avanti West Coast, Great Western Railway or Transport for Wales on your way to Cardiff Bay, 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 London to Cardiff Bay start from £45.60 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 Cardiff Bay, 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.

FAQs about the train journey from London to Cardiff Bay

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

How do you travel to Cardiff Bay from London?

To get to Cardiff Bay from London, why not take the train? With 39 trains per day and an average journey time of 4 hours and 58 minutes, taking the train is a great way to travel. You can also catch the bus from London to Cardiff Bay. See our Journey Planner for up-to-date times and prices.

How long does it take to get from London to Cardiff Bay by train?

On average, it takes around 4 hours and 58 minutes to travel from London to Cardiff Bay by train, although you can get there in 2 hours and 6 minutes on the fastest services. With 39 trains per day running on this route, journey times may vary, so check our Journey Planner for more information.

How much is the train ticket from London to Cardiff Bay?

The price of a train ticket from London to Cardiff Bay can start from as little as £45.60, depending on the time of day, route and class you book. Train tickets may also be cheaper when you book in advance compared to buying them on the day.

How fast can trains travel from London to Cardiff Bay?

The fastest time a train can travel the 131 miles (210 km) from London to Cardiff Bay is 2 hours and 6 minutes.

Cheap train tickets from London to Cardiff Bay

Train tickets from London to Cardiff Bay start at £45.60 one way for a Standard Class ticket if you book in advance. As most UK train companies increase their prices as the departure date approaches, we’ll help you find the cheapest tickets.

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 London to Cardiff Bay 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.

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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