The average bus between Harrow and St Paul's Cathedral takes 1h 20m and the fastest bus takes 1h 15m. There is a bus service every few hours from Harrow to St Paul's Cathedral. 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 Harrow and St Paul's Cathedral. The earliest departure is at 12:12 AM at night, and the last departure from Harrow is at 11:57 PM which arrives into St Paul's Cathedral at 1:26 AM. All services require a transfer at Trafalgar Square and take an average of 1h 20m. The schedules shown below are for the next available departures.

1h 20m • 1 change
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Want to know about travelling from Harrow to St Paul's Cathedral? 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 Harrow to St Paul's Cathedral. However, there are services departing from Harrow station and arriving at St Paul's Cathedral station via Trafalgar Square. The journey, including transfers, takes approximately 1h 20m.
Harrow to St Paul's Cathedral bus services, operated by London Buses, depart from Harrow Bus Station.
Harrow to St Paul's Cathedral bus services, operated by London Buses, arrive at Trafalgar Square station.
The distance between Harrow and St Paul's Cathedral is 18.2 km. The road distance is 30 km.
London Buses operates a bus from Harrow Bus Station to Trafalgar Square hourly. Tickets cost £3–7 and the journey takes 1h 7m.