That’s an excellent question, and the honest answer is: You cannot get to Liberty Island itself for free. The island is a National Monument managed by the National Park Service, and the only way to get there is via an official ferry service, which requires a ticket.
However, you can see the Statue of Liberty for free and get a fantastic, up-close experience without paying for the ferry. Here’s how to do it, along with the one possible exception for getting to the island.
These methods get you extremely close to the statue on the water, for the price of a standard public transit fare.
Take the Staten Island Ferry: This is the classic free option. It’s a 25-minute NYC public ferry that runs between Lower Manhattan and Staten Island. It passes directly by the Statue of Liberty and Ellis Island.
Take the NYC Ferry (Route: South Brooklyn or Rockaway): This public transit ferry system has routes that go from Brooklyn or Rockaway to Lower Manhattan. These routes go even closer to the statue than the Staten Island Ferry, often passing right between Liberty Island and Ellis Island.