Bustins Island is an island in eastern Casco Bay, Maine. The island has approximately 115 summer cottages. Bustins Island operates its own ferry, the Lilly B, that debarks in Harraseeket harbor in Freeport. Typically, the Lilly B operates from Memorial Day Weekend through Columbus Day Weekend. Although physically located within Freeport, Maine, the Bustins Island Village Corporation is a self-governing entity.