The average bus between Guildford and Porton Down takes 6h 24m and the fastest bus takes 4h 41m. The bus service runs several times per day from Guildford to Porton Down. 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 4 times a day between Guildford and Porton Down. The earliest departure is at 6:12 AM in the morning, and the last departure from Guildford is at 11:50 PM which arrives into Porton Down at 10:03 AM. All services require a transfer at Heathrow Terminal 5 and take an average of 6h 24m. The schedules shown below are for the next available departures.



5h 36m • 3 changes



4h 49m • 3 changes



5h 19m • 3 changes



5h 48m • 3 changes



5h 49m • 3 changes



4h 41m • 3 changes



4h 51m • 3 changes



5h 42m • 3 changes



5h 19m • 3 changes



4h 44m • 3 changes



5h 17m • 3 changes



5h 47m • 3 changes



5h 36m • 3 changes



5h 58m • 3 changes



4h 57m • 3 changes



5h 48m • 3 changes



5h 36m • 3 changes



5h 58m • 3 changes



4h 57m • 3 changes



5h 48m • 3 changes
Want to know about travelling from Guildford to Porton Down? 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 Guildford to Porton Down. However, there are services departing from Guildford station and arriving at Porton Down station via Heathrow Terminal 5. The journey, including transfers, takes approximately 6h 24m.
Guildford to Porton Down bus services, operated by First Berkshire & The Thames Valley, depart from Guildford station.
Guildford to Porton Down bus services, operated by First Berkshire & The Thames Valley, arrive at New Canal station.
The distance between Guildford and Porton Down is 79.2 km. The road distance is 201 km.
You can take a bus from Guildford station to Firs Road Top via Heathrow Terminal 5, Meeting House Lane, New Canal, and Endless Street in around 5h 11m.