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Cardiff to London St Pancras International Train prices and times

Planning a journey from Cardiff to London St Pancras International? Trip.com offers train tickets starting from as low as DKK 316.51, with average prices for this route around DKK 316.51. To ensure you get the most affordable fares, we suggest exploring alternatives like split tickets.

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DepartureArrivalDurationOperator
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14:54
Cardiff Central
17:11
London St Pancras International
2h 17m, DirectGreat Western Railway
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15:18
Cardiff Central
17:40
London St Pancras International
2h 22m, DirectGreat Western Railway
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15:54
Cardiff Central
18:12
London St Pancras International
2h 18m, DirectGreat Western Railway
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16:21
Cardiff Central
18:43
London St Pancras International
2h 22m, DirectGreat Western Railway
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16:50
Cardiff Central
19:11
London St Pancras International
2h 21m, DirectGreat Western Railway
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17:18
Cardiff Central
19:45
Paris
2h 27m, Changes requiredGreat Western RailwayElizabeth lineThameslink
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Cardiff to London St Pancras International Train Route Details

First train
First train
05:07
Last train
Last train
23:30
Departure station
Departure station
Cardiff
Arrival station
Arrival station
London St Pancras International
Journey time
Journey time
2h 17m
Distance
Distance
211 km
Price
Price
DKK 316.51*
Train operators
Train operators
Elizabeth line, Great Western Railway, Thameslink

How to book cheap train tickets from Cardiff to London St Pancras International

Season Tickets for frequent travel

Season Tickets for frequent travel

If you frequently travel between Cardiff and London St Pancras International, a Season Ticket allows unlimited travel between these stations and is available for various durations, such as weekly, monthly, annual, or flexi. Enjoy the convenience of not having to buy a ticket for each journey, as well as significant savings.
Network Railcard for South East England

Network Railcard for South East England

For only a small annual fee, you can save 1/3 on most fares in South East England, including routes in and out of London, with the Network Railcard. Covering both standard and off-peak tickets, this railcard is particularly beneficial for those who travel regularly within this region.
Traveling in off-peak train times

Traveling in off-peak train times

Taking advantage of Off-Peak train tickets is another effective way to save on your train journey from Cardiff to London St Pancras International. These tickets are generally cheaper and can be used during quieter periods, typically outside of morning (6:30 AM–9:30 AM) and evening (4:00 PM–7:00 PM) rush hours on weekdays.
Get 1/3 off with a Railcard

Get 1/3 off with a Railcard

With a Railcard, you can save up to 1/3 on most rail fares. There are different types of Railcards available, such as the 16–25 Railcard, the Family & Friends Railcard, and the Senior Railcard, each catering to specific groups of travelers. You can discover more about Railcards here.
Split tickets to save an average extra 30%

Split tickets to save an average extra 30%

Another option to consider is splitting your tickets, which can save you around an extra 30% on fares. Instead of purchasing a direct ticket from Cardiff to London St Pancras International, you can split the route into two legs: A to C and C to B. This often turns out to be more affordable than buying a direct ticket, and you won't even need to leave the train… or often your seat!
Book in advance to save an average of 61%

Book in advance to save an average of 61%

Advance Tickets are usually released up to 12 weeks before the travel date and can be significantly cheaper than tickets purchased closer to departure. By planning your trip from Cardiff to London St Pancras International ahead of time and securing your tickets early, you can save up to 61% on the cost of your travel.
Travel in a group to save 1/3

Travel in a group to save 1/3

If you are traveling in a group, be sure to check out group travel discounts. Many train companies offer a ⅓ off standard fares for groups of three to nine people, making traveling from Cardiff to London St Pancras International more affordable for families, friends, or colleagues planning a trip together.

Cardiff to London St Pancras International train ticket types

There are various ticket types available for this route, each with different benefits and restrictions. Explore below to see which ticket type is best suited to your travel needs:

Why Book Train Tickets With Trip.com?

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  • Split Tickets

    Split Tickets

    Save an average of 30% on train fares by splitting your Cardiff to London St Pancras International journey

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*After comparing the full year of 2023 for SplitTickets and full-price tickets on Trip.com, the average savings rate for SplitTickets is 30%.