RATES: available on website or on request. Lake Champlain Ferries connecting Interstates 87 & 89. Grand Isle ferry - 24-hour/day year-round service between Plattsburgh, NY & Grand Isle, VT; Essex ferry - year-round, ice-conditions permitting, between Charlotte, VT & Essex, NY. Burlington ferry operates mid-June to end of September between Port Kent, NY & Burlington, VT.