The average bus between London and Harpenden takes 1h 56m and the fastest bus takes 1h 30m. There is an hourly bus service from London to Harpenden. 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 London and Harpenden. The earliest departure is at 4:32 AM at night, and the last departure from London is at 10:07 PM which arrives into Harpenden at 12:00 AM. All services require a transfer, and take on average 1h 56m. The schedules shown below are for the next available departures.

1h 37m • 1 change

1h 37m • 1 change

1h 52m • 1 change

1h 53m • 1 change

1h 41m • 1 change

1h 41m • 1 change

1h 56m • 1 change

1h 59m • 1 change

2h 27m • 1 change

1h 58m • 1 change

2h 18m • 1 change

2h 6m • 1 change
Want to know about travelling from London to Harpenden? 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 London to Harpenden. However, there are services departing from London station and arriving at Harpenden station via Black Boy PH. The journey, including transfers, takes approximately 1h 56m.
London to Harpenden bus services, operated by Green Line, depart from Marble Arch station.
London to Harpenden bus services, operated by Green Line, arrive at Old Cock Inn station.
Book your London to Harpenden bus tickets online with Green Line and Arriva UK.
The distance between London and Harpenden is 37.9 km. The road distance is 50 km.
You can take a bus from Marble Arch to Old Cock Inn via Black Boy PH in around 1h 51m.