The average bus between Mount Sinai and Greenport takes 2h 20m and the fastest bus takes 1h 50m. There is a bus service every few hours from Mount Sinai to Greenport. 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 Mount Sinai and Greenport. The earliest departure is at 5:56 AM in the morning, and the last departure from Mount Sinai is at 9:56 PM which arrives into Greenport at 6:50 AM. All services require a transfer, and take on average 2h 20m. The schedules shown below are for the next available departures.

1h 50m • 1 change

1h 50m • 1 change

1h 50m • 1 change

1h 50m • 1 change

1h 54m • 1 change

1h 59m • 1 change

2h 9m • 1 change

2h 9m • 1 change

1h 54m • 1 change

1h 59m • 1 change

2h 9m • 1 change

2h 9m • 1 change
Want to know about travelling from Mount Sinai to Greenport? 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 Mount Sinai to Greenport. However, there are services departing from Mount Sinai station and arriving at Greenport station via Riverhead LIRR. The journey, including transfers, takes approximately 2h 20m.
Mount Sinai to Greenport bus services, operated by Suffolk County Transit, depart from NYS 25A/Chestnut St station.
Mount Sinai to Greenport bus services, operated by Suffolk County Transit, arrive at 1st St/Adams St station.
The distance between Mount Sinai and Greenport is 58.9 km. The road distance is 75 km.
You can take a bus from NYS 25A/Chestnut St to 1st St/Adams St via Riverhead LIRR in around 2h 20m.