The average bus between Princeton and Washington takes 5h 9m and the fastest bus takes 4h 30m. The bus service runs several times per day from Princeton to Washington. 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 Princeton and Washington. The earliest departure is at 6:00 AM in the morning, and the last departure from Princeton is at 7:00 PM which arrives into Washington at 11:30 PM. All services require a transfer, and take on average 5h 9m. The schedules shown below are for the next available departures.

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Want to know about travelling from Princeton to Washington? 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 Washington. However, there are services departing from Princeton station and arriving at Washington station via Washington Union Station station. The journey, including transfers, takes approximately 5h 9m.
Princeton to Washington bus services, operated by Suburban Transit, depart from New Brunswick station.
Princeton to Washington bus services, operated by Suburban Transit, arrive at Washington Union Station.
The distance between Princeton and Washington is 260 km. The road distance is 342 km.
Flixbus USA operates a bus from New Brunswick to Washington Union Station 4 times a day. Tickets cost $26–45 and the journey takes 3h 40m.