How much is the train ticket from Cardiff to London?

The cheapest train tickets from Cardiff to London start from $48. The average price for this train route is around $87. Busbud recommends that you book your tickets in advance for a better chance to get the lowest possible price.

How long is the train journey from Cardiff to London?

The average train ride duration from Cardiff to London is 1h 54m, covering a distance of 129 miles (208 km). The quickest train can get you there in 1h 47m and is operated by Great Western Railway .

Which train operators service the Cardiff to London route?

Several major train operators operate on this route with 16 trains available per day.

What is the earliest and latest departure time for the train from Cardiff to London?

The earliest train departs from Cardiff to London at 7:18am. And the latest train departs at 9:30pm.

Train Cardiff to London from $47

Next train departures

Next departures for Cardiff to London on December 12
Vehicle type	Departure time	Departure location	Trip duration	Arrival time	Arrival location	Recommended
Train	9:19am	Cardiff Central	2h 1m	11:20am	London Paddington	Cheapest
Train	3:54pm	Cardiff Central	1h 48m	5:42pm	London Paddington	Fastest
Train	7:23am	Cardiff Central	1h 49m	9:12am	London Paddington	No tags
Train	7:23am	Cardiff Central	1h 49m	9:12am	London Paddington	No tags
Train	7:49am	Cardiff Central	1h 55m	9:44am	London Paddington	No tags

Next departures for Cardiff to London on December 13
Vehicle type	Departure time	Departure location	Trip duration	Arrival time	Arrival location	Recommended
Train	7:18am	Cardiff Central	1h 56m	9:14am	London Paddington	Cheapest
Train	8:23am	Cardiff Central	1h 50m	10:13am	London Paddington	Fastest
Train	7:18am	Cardiff Central	1h 56m	9:14am	London Paddington	No tags
Train	7:50am	Cardiff Central	1h 54m	9:44am	London Paddington	No tags
Train	7:50am	Cardiff Central	1h 54m	9:44am	London Paddington	No tags

Next departures for Cardiff to London on December 14
Vehicle type	Departure time	Departure location	Trip duration	Arrival time	Arrival location	Recommended
Train	8:50am	Cardiff Central	2h	10:50am	London Paddington	Cheapest
Train	11:20am	Cardiff Central	1h 49m	1:09pm	London Paddington	Fastest
Train	8:50am	Cardiff Central	2h	10:50am	London Paddington	No tags
Train	9:35am	Cardiff Central	2h 6m	11:41am	London Paddington	No tags
Train	9:35am	Cardiff Central	2h 6m	11:41am	London Paddington	No tags

Next departures for Cardiff to London on December 15
Vehicle type	Departure time	Departure location	Trip duration	Arrival time	Arrival location	Recommended
Train	5:50pm	Cardiff Central	1h 52m	7:42pm	London Paddington	Cheapest
Train	7:23am	Cardiff Central	1h 49m	9:12am	London Paddington	Fastest
Train	7:23am	Cardiff Central	1h 49m	9:12am	London Paddington	No tags
Train	7:49am	Cardiff Central	1h 55m	9:44am	London Paddington	No tags
Train	7:49am	Cardiff Central	1h 55m	9:44am	London Paddington	No tags

Next departures for Cardiff to London on December 16
Vehicle type	Departure time	Departure location	Trip duration	Arrival time	Arrival location	Recommended
Train	5:50pm	Cardiff Central	1h 52m	7:42pm	London Paddington	Cheapest
Train	7:23am	Cardiff Central	1h 49m	9:12am	London Paddington	Fastest
Train	7:23am	Cardiff Central	1h 49m	9:12am	London Paddington	No tags
Train	7:49am	Cardiff Central	1h 55m	9:44am	London Paddington	No tags
Train	7:49am	Cardiff Central	1h 55m	9:44am	London Paddington	No tags

Next departures for Cardiff to London on December 17
Vehicle type	Departure time	Departure location	Trip duration	Arrival time	Arrival location	Recommended
Train	5:50pm	Cardiff Central	1h 52m	7:42pm	London Paddington	Cheapest
Train	7:23am	Cardiff Central	1h 49m	9:12am	London Paddington	Fastest
Train	7:23am	Cardiff Central	1h 49m	9:12am	London Paddington	No tags
Train	7:49am	Cardiff Central	1h 55m	9:44am	London Paddington	No tags
Train	7:49am	Cardiff Central	1h 55m	9:44am	London Paddington	No tags

Next departures for Cardiff to London on December 18
Vehicle type	Departure time	Departure location	Trip duration	Arrival time	Arrival location	Recommended
Train	5:50pm	Cardiff Central	1h 52m	7:42pm	London Paddington	Cheapest
Train	7:23am	Cardiff Central	1h 49m	9:12am	London Paddington	Fastest
Train	7:23am	Cardiff Central	1h 49m	9:12am	London Paddington	No tags
Train	7:49am	Cardiff Central	1h 55m	9:44am	London Paddington	No tags
Train	7:49am	Cardiff Central	1h 55m	9:44am	London Paddington	No tags

Last refresh of the prices: Today at 10:24 PM GMT.

Compare 3 ways to go from Cardiff to London

We recommend carpooling

Among the sustainable travel choices, the carpool stands out as the good way to reach London. The journey takes about 2 hours 50 minutes and with fares starting at just $11, it presents an excellent value for a comfortable ride.

1carpool per day

2h 50mAverage Duration

131 milesDistance

9kgCO₂ emissions

	Average Price	Average Duration	CO₂ emissions
Bus	Average Price$12 - $96	Average Duration3h 40m	CO₂ emissions 5kg CO₂e
Train	Average Price$48 - $311	Average Duration1h 54m	CO₂ emissions 5kg CO₂e
Carpool	Average Price$11 - $36	Average Duration2h 50m	CO₂ emissions 9kg CO₂e

Where are the popular train stations and stops in Cardiff and London?

Cardiff

A
Cardiff Central
Cardiff Central, UK
Visit page

London

A
King's Cross
7 York Way, London N1 9AA, UK
Visit page
B
St Pancras International
King's Cross St. Pancras, Euston Rd, Kings Cross, London N1 9AL, UK
Visit page
C
Euston Station
Euston Railway Station B40 The Balcony, Eversholt St, London NW1 2DU, UK
Visit page
D
Waterloo
Waterloo Station Southbank, Station Approach, London SE1 8SW, UK
Visit page
E
London Bridge
51-55 St Thomas St, London SE1 3QX, UK
Visit page
F
Marylebone
Melcombe Pl, London NW1 6JJ, UK
Visit page

Train Companies

Great Western Railway

4/542 reviews

Staff5

Timeliness4.7

Cleanliness4.7

Wifi4

Based on 42 reviews, the company was rated 4 stars on Busbud. Travelers were especially satisfied with the staff and the seats but often complained with the wifi. Great Western Railway ticket prices on this trip start at $48

Train and bus companies in GB:Amtrak, Trenitalia, Renfe, VIA Rail Canada, RegioJet, FlixTrain, Amtrak Acela

Frequently asked questions about traveling from Cardiff to London by train

Please note that schedules, routes, or operator details shown here may be updated or vary at the time of your trip.

How much is the train ticket from Cardiff to London?
The cheapest train tickets from Cardiff to London start from $48. The average price for this train route is around $87. Busbud recommends that you book your tickets in advance for a better chance to get the lowest possible price.
How long is the train journey from Cardiff to London?
The average train ride duration from Cardiff to London is 1h 54m, covering a distance of 129 miles (208 km). The quickest train can get you there in 1h 47m and is operated by Great Western Railway.
Which train operators service the Cardiff to London route?
Several major train operators operate on this route with 16 trains available per day.
What is the earliest and latest departure time for the train from Cardiff to London?
The earliest train departs from Cardiff to London at 7:18am. And the latest train departs at 9:30pm.

Find cheapest prices for trains

Price is for a one-way ticket for one passenger and based on past searches.

Best price found

12/09

$79

12/10

$79

Today

$80

12/12

$85

12/13

$85

12/14

$85

12/15

$80

12/16

$80

The cheapest trip from Cardiff to London was searched and found on Dec 10, 2025 with a price of $79

To save money and be sure you have the best seat, it's a good idea to buy your train tickets from Cardiff to London, as early as possible.

You can expect to pay from $79 to $301 for a train ticket from Cardiff to London based on the last 2 days. You can expect to find the cheapest price for the trip at $80 which is on 2025-12-15.