The average train between Islip and Princeton takes 3h 50m and the fastest train takes 3h 19m. The train service runs several times per day from Islip 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.
Trains run every 4 hours between Islip and Princeton. The earliest departure is at 5:21 AM in the morning, and the last departure from Islip is at 10:56 PM which arrives into Princeton at 4:45 AM. All services require a transfer at Babylon and take an average of 3h 50m. The schedules shown below are for the next available departures.



3h 54m • 3 changes


3h 39m • 3 changes


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3h 54m • 3 changes


3h 39m • 3 changes


3h 53m • 3 changes


3h 39m • 3 changesWant to know about travelling from Islip 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 train from Islip to Princeton. However, there are services departing from Babylon station and arriving at Princeton Jct. station via New York Penn Station. The journey, including transfers, takes approximately 3h 50m.
Islip to Princeton train services, operated by Long Island Rail Road, depart from Babylon station.
Islip to Princeton train services, operated by NJ Transit, arrive at Princeton Jct. station.
The distance between Islip and Princeton is 129.5 km. The road distance is 144 km.
You can take a train from Islip to Princeton via Babylon, New York Penn Station, and Princeton Jct. in around 3h 29m.