Six Florida Islands You Can Day-Trip Without Owning a Boat

September 28, 2026 · 4 min read · My FL Guide

Some of the best days in Florida start with somebody else driving the boat. These six islands have no bridge, no cars, and a scheduled ferry, shuttle or water taxi that will put you ashore and bring you back the same afternoon.

Caladesi Island, off Dunedin

Caladesi is an undeveloped barrier island with no bridge and no cars, which is the whole point. The beach is consistently rated among the best in the country, the shelling is genuinely good, and there are mangrove kayak trails and regular dolphin sightings. The ferry leaves from Honeymoon Island at 1 Causeway Blvd in Dunedin: $16 per adult and $8 per child round trip, plus $8 state park entry if you arrive by ferry. Private boats and kayaks land free.

Cayo Costa, in Pine Island Sound

A 2,426-acre barrier island with nine miles of completely undeveloped Gulf beach, no roads, no cars and no stores. Park entry is $2 per person, collected by the ferry operator for day passengers 6 and up, in cash. The Tropic Star day-trip ferry runs $47 per adult and $25 for children 6 and under, with camper shuttles at $65 per adult and $45 per child. Bringing your own kayak costs $40 round trip for ferry transport, and day parking at Pineland Marina is $10 per vehicle, cash.

Shell Island, off Panama City Beach

Shell Island is a largely undeveloped barrier island with bright white sand, clear emerald water and excellent shelling. There are no roads, shops, restrooms or trash service, which is what keeps the shoreline quiet. The island itself carries no fee; boat, shuttle and water-taxi fares vary by operator. St. Andrews State Park's shuttle lists $25 per adult round trip, and park entrance is $8 per vehicle.

Egmont Key, at the mouth of Tampa Bay

Egmont Key is reached by ferry from Fort De Soto Park at 3500 Pinellas Bayway S in Tierra Verde. Budget the $6 Fort De Soto vehicle entry plus a ferry or tour fare that commonly runs $40 to $60. You land on a wild island with historic ruins, a lighthouse, sea-turtle nesting and serious birding. Bring everything you need, because there are no concessions.

Keewaydin Island, off Naples

Keewaydin sits between Naples and Marco Island and is reached by private boat or water taxi. Island access is free and there are no facilities. The Hemingway Water Shuttle publishes fares of $23 per adult and $13 per child each way — $46 and $26 round trip — before tax and port fees, so confirm the details when you book. The ride out through Gordon Pass often comes with dolphins escorting the boat, and the shore is loggerhead nesting habitat - the Florida Fish and Wildlife Conservation Commission notes that loggerheads typically nest in Florida from April to September.

Dry Tortugas National Park, from Key West

The big one: a national park that is mostly water, out past the Marquesas and reachable only by boat or seaplane. The Yankee Freedom III ferry leaves from 100 Grinnell St in Key West at $200 per adult and $135 per child, park entry included. A seaplane flight runs $400 to $700 per person, and camping on the island is $15 a night. Whichever way you go it is a full day, and the ferry sells out - book it first and build the rest of the trip around it.

Planning a boat day

• Book the first departure. You get the island at its quietest and the most time before the last boat back.
• Carry cash. Park entry at Cayo Costa and day parking at Pineland Marina are both collected in cash.
• Assume there are no facilities. Cayo Costa, Shell Island and Keewaydin have none, so water, food and sun protection are your job.
• Check the wind before you commit, especially for the longer crossings to Egmont Key and the Dry Tortugas.
• Booking ahead matters on weekends and in season - the shuttles and ferries here run on set schedules, not on demand.

Every island and operator in this piece has a full card in My FL Guide with its address, fares and directions to the dock, so the logistics are the easy part.