The average bus between Princeton and Somerville takes 4h 4m and the fastest bus takes 3h 34m. There is a bus service every few hours from Princeton to Somerville. 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 hourly between Princeton and Somerville. The earliest departure is at 5:00 AM in the morning, and the last departure from Princeton is at 10:00 PM which arrives into Somerville at 2:13 AM. All services require a transfer, and take on average 4h 4m. The schedules shown below are for the next available departures.

4h 4m • 1 change

4h 9m • 1 change

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4h 18m • 1 change

4h 23m • 1 change

4h 14m • 1 change

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4h 23m • 1 change

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4h 18m • 1 change

4h 23m • 1 change
Want to know about travelling from Princeton to Somerville? 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 Princeton to Somerville. However, there are services departing from Princeton station and arriving at Somerville station via Port Authority Bus Terminal. The journey, including transfers, takes approximately 4h 4m.
Princeton to Somerville bus services, operated by Rockland Coaches, depart from Nassau St & S Tulane St - Palmer Square station.
Princeton to Somerville bus services, operated by Rockland Coaches, arrive at N Gaston Ave At William St station.
The distance between Princeton and Somerville is 25.4 km. The road distance is 309 km.
You can take a bus from Nassau St & S Tulane St - Palmer Square to N Gaston Ave At William St via Port Authority Bus Terminal in around 4h 11m.