Purchase a Treasure Island ferry ticket The ferry runs between the Treasure Island ferry terminal and Gate B of the Ferry Building in downtown San Francisco. Cost $5.00. One way ticket: $5.00. Round trip ticket: $10.00. Children under 5 ride free. Service animals only. Expiration and returns Tickets are valid for up to 365 days from date of purchase. All sales are final. What to do Online Purchase tickets In-Person In-Person Purchase ticket onboard You can purchase your ticket on board the ferry via credit card, Apple Pay, Google Pay, or cash. Related Bicycle and pedestrian access to Treasure Island and Yerba Buena Island Ride safely on-Island and follow all traffic signage. Treasure and Yerba Buena Islands Transportation Program A robust multi-modal network that prioritizes pedestrians, bicycling, and public transit. Last updated March 2, 2022 Departments Treasure Island Development Authority City Administrator