HOW long as you want because when u need to go to Ellis island you could take any boat that takes you to Ellis island.
Ellis Island has no aviation facilities.
The trip was very short. Generally, it took five days to travel across the Atlantic from the UK to the island. Not all immigrants were admitted into the island upon arrival.
most people say it took up to 3 to 5 weeks. [from Europe to Ellis Island]
Assuming you are talking about travel in the late 19th to early 20th centuries, an average ship took around 40 days to 6 months.
about a month
All passengers who came to America from 1855 to 1890 had to go through Ellis Island. Passengers were inspected for contagious disease.
Immigrants had to go to Ellis Island because they had to take a test, check if their sick, and get the papers this usually took a really long time.
Ellis Island officially opened as an immigration station on January 1, 1892.http://www.nps.gov/elis/faqs.htmIn November 1954, Ellis Island closed its doors.http://www.nowpublic.com/world/ellis-island-why-did-it-close
Are you walking, driving, or flying?
Many ships came to Ellis Island, from different locations overseas and using different modes of power. So, there is no true answer to this question.
About 9-10 hours air travel.