The average bus between Cardiff and Parliament Square takes 4h 3m and the fastest bus takes 3h 38m. There is a bus service every few hours from Cardiff to Parliament Square. The journey time may be longer on weekends and holidays; use the search form on this page to search for a specific travel date.
Buses run hourly between Cardiff and Parliament Square. The earliest departure is at 3:20 AM at night, and the last departure from Cardiff is at 7:53 PM which arrives into Parliament Square at 11:37 PM. All services require a transfer at London Victoria Coach Station Arrivals and take an average of 4h 3m. The schedules shown below are for the next available departures.

3h 45m • 1 change

4h 11m • 1 change

4h 15m • 1 change

4h 16m • 1 change

3h 48m • 1 change

3h 40m • 1 change

3h 38m • 1 change

3h 40m • 1 change

3h 48m • 1 change

3h 40m • 1 change

3h 38m • 1 change

3h 40m • 1 change
Want to know about travelling from Cardiff to Parliament Square? We have put together a list of the most frequently asked questions from our users such as: What is the cheapest mode of transport? What is the quickest option? How much do tickets usually cost? and many more.
No, there is no direct bus from Cardiff to Parliament Square. However, there are services departing from Cardiff station and arriving at Parliament Square station via London Victoria Coach Station Arrivals station. The journey, including transfers, takes approximately 4h 3m.
Cardiff to Parliament Square bus services, operated by National Express, depart from Park Place station.
Cardiff to Parliament Square bus services, operated by National Express, arrive at London Victoria Coach Station Arrivals.
The distance between Cardiff and Parliament Square is 211.4 km. The road distance is 242 km.
National Express operates a bus from Park Place to London Victoria Coach Station Arrivals hourly. Tickets cost £28–70 and the journey takes 3h 42m.