The average bus between Cambridge and Portsmouth Harbour takes 5h 26m and the fastest bus takes 4h 35m. The bus service runs several times per day from Cambridge 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 5 times a day between Cambridge and Portsmouth Harbour. The earliest departure is at 5:45 AM in the morning, and the last departure from Cambridge is at 6:15 PM which arrives into Portsmouth Harbour at 12:30 AM. All services require a transfer at Heathrow Central Bus Station and take an average of 5h 26m. The schedules shown below are for the next available departures.

4h 35m • 1 change

4h 35m • 1 change

4h 55m • 1 change

5h 35m • 1 change

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4h 35m • 1 change

4h 55m • 1 change

5h 35m • 1 change

5h 5m • 1 change

4h 35m • 1 change

5h 25m • 1 change

5h 50m • 1 change

5h 5m • 1 change

5h • 1 change

6h 15m • 1 change

5h 25m • 1 change

5h 5m • 1 change

5h • 1 change

6h 15m • 1 change

5h 25m • 1 change

5h 5m • 1 change

5h • 1 change

6h 15m • 1 change

5h 25m • 1 change
Want to know about travelling from Cambridge 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 Cambridge to Portsmouth Harbour. However, there are services departing from Cambridge station and arriving at Portsmouth Harbour station via Heathrow Central Bus Station station. The journey, including transfers, takes approximately 5h 26m.
Cambridge to Portsmouth Harbour bus services, operated by National Express, depart from Parkside station.
Cambridge to Portsmouth Harbour bus services, operated by National Express, arrive at St Georges Square station.
The distance between Cambridge and Portsmouth Harbour is 177.5 km. The road distance is 242 km.
You can take a bus from Parkside to Portsmouth Harbour via Heathrow Central Bus Station and St Georges Square in around 5h 18m.