The average bus between Portsmouth and Merstham takes 4h 2m and the fastest bus takes 3h 32m. The bus service runs several times per day from Portsmouth to Merstham. 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 Portsmouth and Merstham. The earliest departure is at 3:20 AM at night, and the last departure from Portsmouth is at 4:55 PM which arrives into Merstham at 8:56 PM. All services require a transfer at Heathrow Terminal 5 and take an average of 4h 2m. The schedules shown below are for the next available departures.



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4h 2m • 3 changesWant to know about travelling from Portsmouth to Merstham? 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 Merstham. However, there are services departing from The Hard Interchange station and arriving at Redhill Bus Station via Heathrow Terminal 5 station and South Terminal Bus Station. The journey, including transfers, takes approximately 4h 2m.
Portsmouth to Merstham bus services, operated by National Express, depart from The Hard Interchange station.
Portsmouth to Merstham bus services, operated by Metrobus, arrive at Redhill Bus Station.
The distance between Portsmouth and Merstham is 83.6 km. The road distance is 110 km.
You can take a bus from The Hard Interchange to Albury Road via Heathrow Terminal 5, South Terminal Bus Station, Gatwick South Terminal, and Redhill Bus Station in around 4h.