The average bus between Northolt and Portsmouth takes 2h 39m and the fastest bus takes 2h 21m. The bus service runs several times per day from Northolt to Portsmouth. 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 4 hours between Northolt and Portsmouth. The earliest departure is at 8:01 AM in the morning, and the last departure from Northolt is at 11:50 PM which arrives into Portsmouth at 2:15 AM. All services require a transfer, and take on average 2h 39m. The schedules shown below are for the next available departures.

2h 33m • 1 changeArrives next day

2h 29m • 1 changeArrives next day

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2h 55m • 1 changeWant to know about travelling from Northolt to Portsmouth? 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 Northolt to Portsmouth. However, there are services departing from Northolt station and arriving at Portsmouth station via Heathrow Central Bus Station station. The journey, including transfers, takes approximately 2h 39m.
Northolt to Portsmouth bus services, operated by First Bus London, depart from Northolt Station.
Northolt to Portsmouth bus services, operated by First Bus London, arrive at St Georges Square station.
The distance between Northolt and Portsmouth is 97.4 km. The road distance is 121 km.
You can take a bus from Northolt Station to St Georges Square via Heathrow Central Bus Station in around 3h 24m.