The average bus between Portsmouth and Grantham takes 9h 25m and the fastest bus takes 7h 22m. The bus service runs several times per day from Portsmouth to Grantham. 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 3 times a day between Portsmouth and Grantham. The earliest departure is at 3:20 AM at night, and the last departure from Portsmouth is at 8:10 PM which arrives into Grantham at 8:10 AM. All services require a transfer at Heathrow Central Bus Station and take an average of 9h 25m. The schedules shown below are for the next available departures.



7h 22m • 3 changes



8h 25m • 3 changes
Arrives next day



12h • 3 changes



7h 22m • 3 changes



8h 25m • 3 changes
Arrives next day



12h • 3 changes



7h 22m • 3 changes



8h 45m • 3 changes



9h 2m • 3 changes
Arrives next day



14h 47m • 3 changes
Want to know about travelling from Portsmouth to Grantham? 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 Portsmouth to Grantham. However, there are services departing from Portsmouth station and arriving at Grantham station via Heathrow Central Bus Station station. The journey, including transfers, takes approximately 9h 25m.
Portsmouth to Grantham bus services, operated by National Express, depart from The Hard Interchange station.
Portsmouth to Grantham bus services, operated by National Express, arrive at St Margaret's Bus Station.
Book your Portsmouth to Grantham bus tickets online with National Express, Arriva UK and Centrebus.
The distance between Portsmouth and Grantham is 236.9 km. The road distance is 339 km.
You can take a bus from The Hard Interchange to Bus Station via Heathrow Central Bus Station, St Margaret's Bus Station, Haymarket Bus Station, Windsor Street, and St Mary's Way in around 7h 52m.