The average bus between Greenport and Islip takes 4h 4m and the fastest bus takes 2h 53m. There is a bus service every few hours from Greenport to Islip. 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 hourly between Greenport and Islip. The earliest departure is at 4:45 AM at night, and the last departure from Greenport is at 8:15 PM which arrives into Islip at 7:08 AM. All services require a transfer at Riverhead LIRR and take an average of 4h 4m. The schedules shown below are for the next available departures.


2h 59m • 2 changes


3h 14m • 2 changes


3h 54m • 2 changes


3h 54m • 2 changes


2h 53m • 2 changes


3h 8m • 2 changes


3h 8m • 2 changes


3h 28m • 2 changes


2h 53m • 2 changes


3h 8m • 2 changes


3h 8m • 2 changes


3h 28m • 2 changes
Want to know about travelling from Greenport to Islip? 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 Greenport to Islip. However, there are services departing from Greenport station and arriving at Islip station via Riverhead LIRR. The journey, including transfers, takes approximately 4h 4m.
Greenport to Islip bus services, operated by Suffolk County Transit, depart from 1st St/Adams St station.
Greenport to Islip bus services, operated by Suffolk County Transit, arrive at Patchogue LIRR station.
The distance between Greenport and Islip is 82.7 km. The road distance is 112 km.
You can take a bus from 1st St/Adams St to Islip Town Hall via Riverhead LIRR and Patchogue LIRR in around 4h 3m.