The average bus between Washington, DC and Princeton takes 5h 1m and the fastest bus takes 4h 30m. The bus service runs several times per day from Washington, DC 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 3 times a day between Washington, DC and Princeton. The earliest departure is at 6:00 AM in the morning, and the last departure from Washington, DC is at 4:55 PM which arrives into Princeton at 9:30 PM. All services require a transfer at New Brunswick and take an average of 5h 1m. The schedules shown below are for the next available departures.

4h 30m • 1 change

5h 15m • 1 change

5h • 1 change

4h 35m • 1 change

5h 30m • 1 change

5h 15m • 1 change

5h • 1 change

4h 35m • 1 change
Want to know about travelling from Washington, DC 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 Washington, DC to Princeton. However, there are services departing from Washington, DC station and arriving at Princeton station via New Brunswick. The journey, including transfers, takes approximately 5h 1m.
Washington, DC to Princeton bus services, operated by Flixbus USA, depart from Washington Union Station.
Washington, DC to Princeton bus services, operated by Flixbus USA, arrive at New Brunswick station.
The distance between Washington, DC and Princeton is 257.7 km. The road distance is 342 km.
Flixbus USA operates a bus from Washington Union Station to New Brunswick 4 times a day. Tickets cost $24–45 and the journey takes 3h 40m.