Dry Tortugas National Park: How to Get There From Key West

About 70 miles west of Key West, well beyond the last bridge of US1, sits one of the most remote national parks in the United States. Dry Tortugas National Park is located about 70 miles west of Key West, Florida. There are two ways to get here: by boat or by seaplane. No causeway connects the seven islands to the mainland, no shuttle runs down a highway, and no day-tripper stumbles upon it by accident. Getting there requires planning, booking ahead, and a deliberate decision about how you want to make the crossing.

What You're Going to See

The park spans about 70 miles west of Key West — the last keys in the Florida Keys, part of one of the longest coral reefs in the world. Its roughly 64,701 acres are composed mostly of open water and seven small islands: Garden Key, Bush Key, Loggerhead Key, Hospital Key, East Key, Long Key, and Middle Key. Made up of seven small islands, it is one of the world's most unique eco-attractions; its crown jewel, the historic Fort Jefferson, was once used as a prison during the Civil War.

Fort Jefferson is the defining structure of the park, and its scale is genuinely staggering. Composed of more than 16 million bricks, it is the largest brick masonry structure in the Western Hemisphere. Dry Tortugas National Park offers some of the best snorkeling and skin diving in North America, just 70 miles from Key West and the Florida Keys, with shallow waters of 5 to 15 feet making snorkeling accessible for all skill levels. The park also holds 30 species of coral, abundant marine life, tropical bird breeding grounds, and notable shipwrecks including the Windjammer near Loggerhead Key. Activities range from birdwatching and kayaking to scuba diving and saltwater fishing. The park was established on January 4, 1935, and is governed by the National Park Service; its website is nps.gov/drto.

The Yankee Freedom III Ferry

Yankee Freedom III, LLC is authorized by the NPS and the Department of the Interior to serve the public at Dry Tortugas National Park. The Yankee Freedom is a high-speed, state-of-the-art, all-aluminum catamaran; built in New England in 2012, she entered service in Key West in the fall of 2012. The ferry departs from the Key West Ferry Terminal at 100 Grinnell Street in the Historic Seaport. The Yankee Freedom III departs daily at 8 AM; upon boarding at 7:30, passengers enjoy a continental breakfast of fresh fruit, freshly baked bagels, doughnuts, cereal, orange juice, and coffee.

The crossing takes approximately 2.5 hours each way, giving day-trippers about 4.5 hours to roam the park. The Yankee Freedom features a large, fully air-conditioned main cabin, comfortable cushioned seats, three restrooms, a fresh water rinse shower, and a full galley serving snacks, soft drinks, beer, wine, and mixed drinks. The upper deck is open to the sea air and sights and sounds of marine life, with spacious sundeck seating and a convenient cocktail bar with protective covering. On the return trip, passengers are welcome to use the Yankee Freedom's three fresh water rinses before the return trip home.

Yankee Freedom passengers have the option of joining a 40-minute guided tour of the fort led by one of the operator's expert naturalists, who share captivating stories about the fort, its remarkable history, and its surroundings. The ferry caps each trip at 175 passengers, so early booking is essential. Reservations are recommended up to six months in advance; as of January 1, 2025, pricing is $235 per adult, discounted to $220 with a National Parks Pass. The NPS entrance fee of $15 per person for visitors 16 and older is typically included in the ferry ticket price. If you arrive without a reservation and hope for a standby spot, go to the Ferry Terminal at 100 Grinnell Street as early as possible on the morning you would like to travel. If prone to seasickness, pack anti-nausea medication before boarding; the open Gulf waters can be choppy, particularly in winter months.

The Seaplane: Faster, Pricier, Unforgettable

Key West Seaplane Adventures is the only authorized park concessionaire that offers seaplane transportation to Garden Key in Dry Tortugas National Park. The flights originate out of Key West International Airport. Both a half-day and a full-day excursion are available.

The half-day trip is $507 per person (2026 adult fare) and gets you 2.5 hours on the island, while the full-day trip costs $890 per person (2026 adult fare) and allows you 6.5 hours; for comparison, the ferry costs approximately $250 per person and gets you 4 hours on the island. The price difference is real, but so is the experience: previous seaplane passengers consistently describe it as worth the splurge, and the overhead views of the reef system below are unlike anything seen from a boat deck.

With just two planes and 10 passengers per flight, seats fill up fast, sometimes months in advance. The National Park Service strictly limits the number of daily passengers, and in-season demand by far exceeds capacity, so booking well in advance is recommended.

Getting to the Seaplane Check-In

The seaplane check-in is at Key West International Airport, and the driving directions matter if you have not been there before. Drive US1 south to the point where US1 meets Key West. At the split, take the left turn signposted A1A (S. Roosevelt Blvd) toward the beaches rather than downtown. Keep straight for 1.3 miles, then turn right into the main entrance of Key West International Airport. At the first stop sign, stay on the ground level toward arrivals and drive under two walkways. After passing under the second walkway, get into the right lane and drive straight past the control tower. Just beyond the control tower is free parking signed for Signature Aviation. You will receive a parking permit at check-in. Do not park in spaces marked FAA.

What to Know Before You Fly

The seaplane operator's aircraft are non-pressurized and fly at approximately 500 feet, which means scuba divers can plan their day freely: "It is OK to dive in Key West in the morning and fly with us in the afternoon (we cannot carry dive tanks)." No camping gear for overnight stays is allowed on the plane; to camp, make a reservation on the Yankee Freedom ferry or arrive by personal boat. The plane also does not transport SCUBA gear.

Wear polarized sunglasses on the flight. They cut glare off the water and make it significantly easier to spot marine life below, including sea turtles, dolphins, and sharks visible through the shallow flats. The flight gives the most unique views by flying at a low altitude over the shallow flats of the Keys. Beer and wine are permitted on board in closed containers; open containers on the aircraft are not allowed. Note that alcohol is legal within a national park but would not be permitted in a Florida state park, so the Dry Tortugas falls on the permissive side of that distinction. To reserve, call 305 304-8910.

Private Vessels and Charters

Arriving by personal boat is the third option. Authorized and approved private vessels may enter the park, and private charters are available for fishing, diving, snorkeling, and wildlife viewing. This is also the only way to reach the park's other islands. The National Park Service is explicit on this point: while both the Yankee Freedom ferry and the seaplane bring visitors to Garden Key, exploring Loggerhead Key, Hospital Key, East Key, Long Key, and Middle Key requires a private charter. A National Park Service entrance fee of $15 per person is required for all visitors ages 16 and older who arrive by personal boat and plan to stop in Dry Tortugas. You cannot hire a private seaplane other than those operated by Key West Seaplane Adventures; if you own a seaplane and wish to fly it to the park, you must obtain a Special Use Permit in advance, unlike a private boat that may obtain a free permit upon arrival.

Camping at Garden Key

Overnight camping is limited to eight primitive campsites at the Garden Key campground, and the word "primitive" carries real weight here. Camping at Fort Jefferson is primitive camping: you must bring everything, water included, with you. Reservations on the ferry for camping sell out 9 to 12 months in advance, so plan ahead. The Park Service collects a campsite fee of $15 to $30 per night based on the size of your party, collected by park rangers during your stay. Due to space constraints, the Yankee Freedom accommodates campers wishing to stay up to 4 days (3 nights). Campers wishing to bring kayaks should note that the ferry can accommodate them subject to space availability and advance coordination.

On the Island: Fort Jefferson, Bush Key, and the Water

Garden Key is where almost all visitors spend their time, and Fort Jefferson alone can fill several hours. Its historic brick moat wall offers panoramic views of the surrounding water, and the visitor center inside the fort is air-conditioned, a welcome refuge on hot South Florida days. If visiting from October through January, do not miss Bush Key; this key is not accessible from February through September due to the breeding season. During open months, a sandbar walk connects Garden Key to Bush Key at lower tides.

In the water, 30 species of coral frame reefs teeming with brightly colored fish. Snorkeling directly off Garden Key's beaches is the most accessible option for day-trippers, while scuba divers can explore deeper sites including the Windjammer shipwreck near Loggerhead Key. Dry Tortugas National Park offers a variety of recreational and educational opportunities including birdwatching, photography, snorkeling, and learning about the history of Fort Jefferson.

Essential Planning Checklist

Before your trip, work through these points:

• Book transportation months ahead: the Yankee Freedom is a very popular trip that will sell out weeks in advance. Seaplane seats go even faster.
• Bring everything you need: there is no running water, no food concessions, and no supply store on the island.
• Pack sunscreen, a hat, snorkel gear, food, and more water than you think you need.
• If you are prone to motion sickness, purchase medication that can relieve motion sickness before boarding the ferry.
• Seaplane passengers: pack polarized sunglasses and remember no dive tanks are permitted on board.
• Confirm current fares, departure times, and any park alerts at nps.gov/drto before you finalize plans.

The park averaged about 63,000 visitors annually between 2008 and 2017, with 56,810 recorded in 2018. Given the rigid capacity limits on both the ferry and seaplane, those numbers reflect a place that requires effort to reach — and rewards that effort in full.