City to city

London to Cardiff by train

London St Pancras International → Cardiff Central

Fastest

≈ 2h 42m

Typical

≈ 2h 49m

Direct trains

No

Fewest changes

1

Operators

London Underground (TfL), GWR, London Buses

Trains link London (London St Pancras International) and Cardiff (Cardiff Central) in about 2h 42m at best, with at least 1 change along the way.

How long does the train from London to Cardiff take?

The fastest trains cover London to Cardiff in about 2h 42m; a typical journey takes around 2h 49m.

Is there a direct train from London to Cardiff?

Usually not — expect at least 1 change on this journey.

Which operators run trains from London to Cardiff?

London Underground (TfL), GWR, London Buses.

Legendary routes through London or Cardiff

• Eurostar London → Paris
• LNER Azuma London → Edinburgh
• Caledonian Sleeper London → Fort William
• Avanti West Coast London → Glasgow

Sleepers too: night trains from London.

More trains from London

• London → Cambridge ≈ 49 min · direct
• London → Birmingham ≈ 1h 16m · direct
• London → Lille ≈ 1h 21m · direct
• London → York ≈ 1h 46m · direct
• London → Bristol ≈ 1h 47m
• London → Brussels ≈ 1h 57m · direct

All trains from London →

More train routes in United Kingdom · France.

Journey figures are typical values sampled from public European schedule data — exact times vary by day; always check the operator when booking.