The average bus between St Paul's Cathedral and Portsmouth Harbour takes 3h 13m and the fastest bus takes 2h 35m. There is a bus service every few hours from St Paul's Cathedral to Portsmouth Harbour. 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 every 2 hours between St Paul's Cathedral and Portsmouth Harbour. The earliest departure is at 7:20 AM in the morning, and the last departure from St Paul's Cathedral is at 11:30 PM which arrives into Portsmouth Harbour at 2:15 AM. All services require a transfer at Southwark St /Blackfriars Road and take an average of 3h 13m. The schedules shown below are for the next available departures.

3h 30m • 1 change

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3h 35m • 1 change

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Want to know about travelling from St Paul's Cathedral to Portsmouth Harbour? 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 St Paul's Cathedral to Portsmouth Harbour. However, there are services departing from St Paul's Cathedral station and arriving at Portsmouth Harbour station via St Georges Square. The journey, including transfers, takes approximately 3h 13m.
St Paul's Cathedral to Portsmouth Harbour bus services, operated by National Express, depart from London Victoria station.
St Paul's Cathedral to Portsmouth Harbour bus services, operated by National Express, arrive at St Georges Square station.
Book your St Paul's Cathedral to Portsmouth Harbour bus tickets online with National Express.
The distance between St Paul's Cathedral and Portsmouth Harbour is 106.3 km. The road distance is 139 km.
National Express operates a bus from London Victoria to St Georges Square hourly. Tickets cost £16–40 and the journey takes 2h 50m.