Two high-speed Dry Tortugas ferries depart from Key West daily (detailed below). These are full-day trips - and include breakfast, lunch, beverages, snorkeling gear, and tour of Fort Jefferson.
Dry Tortugas Ferry #1

Cost: adults $149, children (16 & under) $109, seniors $139 (+$10
fuel surcharge +$5 park entrance fee)
Schedule: 8 am - 5 pm (check in at 7:30 am)
Departs from: 200 Margaret St. (next to Turtle Kraals restaurant)
Reservations: Call 877-463-6539 or
click here.
Dry Tortugas Ferry #2

Cost: adults $120, children (16 & under) $85, seniors $110. (+$5
park entrance fee)
Schedule: 8 am - 5 pm (check in at 7:30 am)
Departs from: 201 Elizabeth St.
Reservations: Call 877-463-6539 or
click here.
Reservations are required. Availability is limited. Ferries usually sell out in advance.