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 Due to on-Island construction, bicycle connections are currently limited. Transportation program for Treasure and Yerba Buena Islands Learn how we develop the transportation program so that you can walk, bike, or take transit for at least 50 percent of your trips. Last updated March 2, 2022 Departments Treasure Island Development Authority City Administrator