The average bus between Princeton and National Harbor takes 7h 32m and the fastest bus takes 6h 23m. The bus service runs several times per day from Princeton to National Harbor. 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 Princeton and National Harbor. The earliest departure is at 10:00 AM in the morning, and the last departure from Princeton is at 7:00 PM which arrives into National Harbor at 4:45 AM. All services require a transfer at New Brunswick and take an average of 7h 32m. The schedules shown below are for the next available departures.



6h 23m • 3 changes


7h 43m • 3 changes


6h 37m • 3 changesArrives next day



10h 43m • 3 changes


6h 37m • 3 changes


6h 35m • 3 changesArrives next day



9h 43m • 3 changes


6h 37m • 3 changes


6h 35m • 3 changesArrives next day



9h 43m • 3 changesWant to know about travelling from Princeton to National Harbor? 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 National Harbor. However, there are services departing from Princeton station and arriving at National Harbor station via Washington Union Station station. The journey, including transfers, takes approximately 7h 32m.
Princeton to National Harbor bus services, operated by Rockland Coaches, depart from New Brunswick station.
Princeton to National Harbor bus services, operated by Rockland Coaches, arrive at Washington Union Station.
The distance between Princeton and National Harbor is 266.5 km. The road distance is 360 km.
Flixbus USA operates a bus from New Brunswick to Washington Union Station 3 times a day. Tickets cost $27–45 and the journey takes 3h 40m.