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London and Cardiff are a fantastic city pair for weekends packed with culture, sports and big events — from match days at the Principality Stadium to history at Cardiff Castle and waterside dining at the Bay. The capitals are around 150 miles apart, connected by fast Great Western Railway trains, regular coaches and the M4 motorway.
This guide compares travel by train, coach and car, with clear details on journey times, prices and what to expect — so you can choose the best option and book with confidence.
What is the best method of travel?
Method | Average Duration | Average Price | Frequency |
Train | 1h 47m – 2h 15m | £25 – £90 | 2+ per hour |
Coach | 3h 15m – 4h 15m | £6 – £20 | Around hourly |
Car | 2h 30m – 3h 30m | £20 – £35 (in fuel) | N/A |
*All figures are estimates as of October 2025 and subject to change based on date, time and availability.
Quickest way from London to Cardiff: Train
Cheapest way from London to Cardiff: Coach (when booked early)
Our recommended way to travel: Train
Why?: The train offers the strongest balance of speed, frequency, comfort and low-hassle station-to-station travel — especially for weekend breaks or business trips.
London to Cardiff by train
Travelling by train from London to Cardiff is the fastest and most convenient way to reach Wales from London. Great Western Railway (GWR) runs direct services from London Paddington to Cardiff Central — placing you right in the heart of both capitals.
Duration & frequency
- Fastest journeys: ~1h 47m
- Most services: ~2 hours
- Frequency: at least two trains per hour (extra at peak times)
The trains run on electric high-speed Intercity Express Trains, keeping travel smooth and reliable throughout the day.
Tickets & money-saving tips
Advance Singles for quieter times can start around £25–£35 if booked early. Flexible, peak-time fares cost more, so:
- Book ahead where possible to secure lower prices
- Travel Off-Peak for savings and quieter trains
- Eligible passengers can use Railcards to save up to 1/3
Onboard experience
Expect modern amenities, including:
- Free Wi-Fi
- Air-conditioning
- Power sockets at most seats
- Luggage racks + larger bag spaces
- Buffet trolley or café bar on selected services
Station arrival advantages
- Paddington connects with the Elizabeth line, Bakerloo, Circle, District & H&C lines for an easy start
- Cardiff Central is a short walk from Cardiff Castle (10–20 minutes), Queen Street shopping, nightlife and local trains/buses to Cardiff Bay
London to Cardiff by coach
If you want the lowest fare and are flexible with time, coaches are a strong option. Services are typically run by National Express and FlixBus.
Route, duration & pricing
- London Victoria Coach Station → Cardiff Coach Station (Sophia Gardens)
- Duration: 3h 15m – 4h 15m, depending on traffic
- Prices typically £6 – £20 in advance
Friday evenings, match days and bank holidays can see longer travel times due to heavier M4 traffic.
Most coaches include:
- Free Wi-Fi
- Charging points
- Air-conditioning
- Onboard toilets
Pros
- Cheapest way to travel
- Reserved seating
- Central arrival close to city attractions
Cons
- Longer journey, traffic-dependent
- Less space than trains for luggage/work
London to Cardiff by car
Driving offers total flexibility — especially handy for families or if you're heading beyond the city centre.
Distance & route
- ~150 miles via the M4 motorway
- Typical travel time: 2h 30m – 3h 30m
- No toll on the Severn Bridge anymore
Costs
Fuel usually works out around £20–£35 each way, depending on vehicle and petrol/diesel prices.
Note: Starting within London means ULEZ/CCZ may add charges.
Parking & alternatives
Central Cardiff has numerous multi-storey buildings near the main shopping areas and the Principality Stadium. For a simpler arrival:
- Use Park & Ride services to the city OR
- Park at a commuter station nearby (e.g., Newport, Cardiff Parkway*) and take a short train in
*opening plans subject to change — check service status before travelling.
- What is the best method of travel?
- London to Cardiff by train
- London to Cardiff by coach
- London to Cardiff by car
