The average bus between Watertown and Princeton takes 8h 3m and the fastest bus takes 6h 31m. The bus service runs several times per day from Watertown to Princeton. 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 Watertown and Princeton. The earliest departure is at 4:30 AM at night, and the last departure from Watertown is at 7:25 PM which arrives into Princeton at 9:30 AM. All services require a transfer at Harvard and take an average of 8h 3m. The schedules shown below are for the next available departures.


8h 55m • 2 changes


7h 15m • 2 changes


8h • 2 changes
Arrives next day


14h 5m • 2 changes


8h • 2 changes


6h 31m • 2 changes


7h 16m • 2 changes


7h 14m • 2 changes


6h 59m • 2 changes


7h 16m • 2 changes


7h 14m • 2 changes


7h 20m • 2 changes


6h 59m • 2 changes


7h 16m • 2 changes


7h 14m • 2 changes


7h 20m • 2 changes


6h 59m • 2 changes


7h 16m • 2 changes


7h 14m • 2 changes


7h 38m • 2 changes


8h • 2 changes


6h 59m • 2 changes


7h 16m • 2 changes


7h 15m • 2 changes
Want to know about travelling from Watertown to Princeton? 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 Watertown to Princeton. However, there are services departing from Watertown station and arriving at Princeton station via Port Authority Bus Terminal. The journey, including transfers, takes approximately 8h 3m.
Watertown to Princeton bus services, operated by MBTA, depart from Boston station.
Watertown to Princeton bus services, operated by MBTA, arrive at Nassau St & Witherspoon St - Palmer Square station.
The distance between Watertown and Princeton is 367 km. The road distance is 517 km.
You can take a bus from Mt Auburn St @ Parker St to Nassau St & Witherspoon St - Palmer Square via Harvard, Harvard, South Station, Boston, and Port Authority Bus Terminal in around 8h 15m.