USA · Florida & the Caribbean · Historic Seaport
Almost everything on the water here leaves from one twenty-acre basin on the Gulf side of the island, and the reef those boats are heading for sits six to seven miles out in the Atlantic — which is why the wind, not the weather, decides your day.
Quick answer
Ten well-reviewed boats leave Key West on a normal day, priced from $35 to $128, and they do three things. Reef snorkelling from $35 runs out to Sand Key, Rock Key or Eastern Dry Rocks, the shallow coral heads at the southern end of the only living barrier reef in the continental United States. Dolphin-and-snorkel eco cruises from $65 add the Gulf-side flats where the resident bottlenose pods work. Sunset sails from $68 put you on the water for the thing the island is famous for.
Nearly all of them load at the Historic Seaport, the city-owned basin around Key West Bight — Sebago at 205 Elizabeth Street, Sunset Watersports at 201 William Street, Fury at 631 Greene Street, all within a few minutes of each other and about eight from Duval. One boat is the exception and it is a big one: the Marathon sandbar trip leaves forty-eight miles back up US-1.
The reef cannot be reached from shore, so there is no cheap swap for a snorkel boat. The sunset is another matter — the Sunset Celebration at Mallory Square is free, and the arithmetic for both is below.
Compare
The five kinds of day out that leave Key West, with the cheapest well-reviewed example of each, what it puts you in the water for and where it loads. Prices, ratings and durations are the operators' own, taken from the listings below and re-checked in September 2026.
| Type of day | Time out | In the water | From | What decides it | Book |
|---|---|---|---|---|---|
| Reef snorkel, offshore coral | 3 hours | One long reef stop | $35 | Cheapest way onto the barrier reef | Details |
| Dolphin watch plus snorkel | 3 hours | One stop, backcountry flats | $65 | Wild dolphins and coral in one run | Details |
| Sunset sail with a band | 2 hours | None | $68 | Open bar, live music, no swimming | Details |
| Sunset dinner cruise | 2 hours | None | $93 | Buffet on board — it replaces dinner | Details |
| Sandbar day, Middle Keys | 4 hours | Standing in waist-deep water | $89 | Worth an hour's drive to Marathon | Details |
The boats
Every boat below is bookable now and carries its operator's own rating and review count. Prices are per person; durations are dock to dock, so a three-hour reef trip spends about forty minutes of it running out and back. Re-checked in September 2026.
4.6★ (860 reviews) · 3 hours · from $73
4.5★ (585 reviews) · 3 hours · from $35
4.6★ (502 reviews) · 2 hours · from $68
4.4★ (322 reviews) · 3 hours · from $55
4.5★ (283 reviews) · 2 hours · from $93
4.8★ (198 reviews) · 2 hours · from $73
4.4★ (89 reviews) · 3 hours · from $65
4.6★ (54 reviews) · 2.5 hours · from $90
4.7★ (51 reviews) · 3 hours · from $128
4.6★ (31 reviews) · 4 hours · from $89
The docks
Key West concentrates almost all of its day boats in one basin, which makes it an easy port to get right — until you book the one trip that does not leave from it, or arrive on a ship that berths somewhere else.
The Historic Seaport, also called Key West Bight, is a twenty-acre city-owned basin on the northwest shore, ringed by the Harbor Walk boardwalk. The charter fleet works off the finger piers around it: Sebago at 205 Elizabeth Street, Sunset Watersports at 201 William Street, Fury at 631 Greene Street, six to eight minutes on foot from mid-Duval. Every snorkel, dolphin and sunset boat here except one loads in this basin, and the confirmation email names a street address rather than a berth.
At 100 Grinnell Street, in the same basin, sits the Key West Ferry Terminal: the Yankee Freedom to Dry Tortugas National Park, check-in 07:00 and back alongside 17:30, and the Key West Express to Fort Myers Beach, three and a half hours by high-speed catamaran. Neither is a day cruise.
The cruise berths matter because a ship passenger has an all-aboard time. Mallory Square Dock, owned by the City of Key West, lands you in the historic district on top of the Sunset Celebration. Pier B, run by Pier B Development Corporation on a lease from the State of Florida, sits beside Opal Key Resort and takes nearly every large ship. The third berth, the federally owned Outer Mole on Navy property, never let passengers walk off — everyone was shuttled through the base — and the Navy has since terminated the City's lease under the agreement's ninety-day notice clause, so it takes no cruise calls at all. Any guide still budgeting for the Mole shuttle is out of date.
The odd one out is the sandbar trip, which leaves from Marathon in the Middle Keys — forty-eight miles north on US-1, about an hour, no tolls. Good day, not a Key West day.
| Dock | What leaves from it | Walk from mid-Duval | Worth knowing |
|---|---|---|---|
| Historic Seaport (Key West Bight) | Every snorkel, dolphin and sunset boat here bar one | 6 – 8 minutes | Operators ring the basin; the ticket gives a street address, not a berth |
| Key West Ferry Terminal, 100 Grinnell St | Yankee Freedom to Dry Tortugas; Key West Express to Fort Myers | 10 minutes | Check-in 07:00 — earlier than any day boat |
| Mallory Square Dock | Cruise ships; the Sunset Celebration on the apron | 5 minutes | City-owned; the free show starts about two hours before sundown |
| Pier B, by Opal Key Resort | Most large cruise ships | 5 – 10 minutes | About 15 minutes on foot to the Seaport |
| Marathon, Middle Keys | The sandbar excursion only | 48 miles, about an hour | Not Key West — check it before booking a hire car back |
The arithmetic
Two of the three headline experiences here have a near-free alternative on land, and one has none at all. This is the honest version of the sum, with the public prices named.
The sunset costs nothing. The Sunset Celebration at Mallory Square runs every night of the year, weather permitting, and starts about two hours before sundown. What a sunset sail at $68 buys is those two hours: open water, an open bar, a band, and nobody's shoulder in the photograph. Time it against the calendar rather than the clock — Key West's sunset moves nearly three hours across the year, from about 17:39 in late November to 20:21 in early July. The December cruise boards in daylight; the same boat in July returns you to Greene Street at nine.
The reef has no land option. The Florida Keys reef tract begins about six miles offshore, and the coral heads the boats use — Sand Key, marked by its 1853 lighthouse, Rock Key and Eastern Dry Rocks — lie six to seven miles out in the Atlantic. Nothing you can swim to from the island is that reef. The nearest substitute is the beach inside Fort Zachary Taylor Historic State Park: Florida State Parks charges 6 USD per vehicle for up to eight people, 4.50 USD for a single occupant, 2.50 USD on foot, Monroe County surcharge included, open 08:00 to sundown. A good rocky-shore swim with fish and rented masks — and not coral. The cheapest reef boat here is $35, and that is the honest gap.
Dry Tortugas is not on this page. Fort Jefferson sits seventy miles west, and the only scheduled passenger boat is the Yankee Freedom at 250 USD for an adult day trip — a fare covering the National Park Service entrance fee of 15 USD per person aged sixteen and over, valid seven days, plus breakfast, lunch and snorkel gear. Seven hours of sailing for four and a half ashore. If Fort Jefferson is why you came, book it directly and give it its own day.
Prices
Three price bands, drawn from the ten listings on this page rather than from a market average. Key West prices cluster more tightly than most ports, because the fleet is competing over the same six miles of water.
The cheapest boat is a reef snorkel at $35 for three hours with drinks and an optional sunset slot; the morning version with breakfast and mimosas is $55. Both are large catamarans on the same mooring buoys, so the hour of day is what separates them — and the early boat is the one that sails when the afternoon trip does not.
Everything with a bar or a dolphin sits here: combinations at $65 and $73, sunset boats at $68 with an open bar, $73 under sail with a live band, $90 for a captain's-choice dolphin sail and $93 with a buffet dinner. At $93 the dinner cruise competes with a Duval Street restaurant, not with the other boats.
The small-group dolphin and snorkel trip at $128 buys the one thing money buys here — fewer people on the swim ladder. The Marathon sandbar excursion at $89 for four hours is the best value per hour on the page, if you count the hour of driving each way as part of the price.
The rules
Every reef stop here happens inside the Florida Keys National Marine Sanctuary, and its rules explain several things that look like the captain being fussy. The regulations below are NOAA's own.
The boat ties to a mooring buoy rather than anchoring — a white sphere with a blue stripe, one of more than six hundred the sanctuary maintains, free and first-come. Not courtesy: anchoring on living coral under forty feet of water is prohibited when the seabed is visible. It also explains why a busy reef morning means waiting your turn or moving to the next site.
The best sites near Key West are Sanctuary Preservation Areas — Sand Key, Rock Key and Eastern Dry Rocks among them — marked by thirty-inch round yellow buoys. Inside one, anchoring is out entirely and so is taking anything. Standing on coral or steadying yourself against a head is how visitors do the damage, and it is what the briefing is about. The red-and-white divers-down flag flies while anyone is in the water, and other vessels may not exceed four knots or throw a wake within a hundred yards of it, which is why the crew counts heads before the engines restart.
On sunscreen: Key West banned the sale of oxybenzone and octinoxate products, Florida preempted local regulation of over-the-counter products, and the city repealed the ordinance. No law obliges mineral sunscreen here. Captains still ask, and a rash guard settles it.
Season
Sea temperatures are the long-term monthly averages from the National Oceanographic Data Center's Coastal Water Temperature Guide; the sailing notes are what the season does to this fleet.
Rain almost never cancels a boat here. Wind does, and the direction matters more than the speed. The reef sits six to seven miles out in open Atlantic water, so a fresh east or southeast wind has hundreds of miles of fetch to build chop across the crossing and over the coral heads — that is the wind that turns a barrier-reef trip into an inshore patch-reef or mangrove trip, which reputable operators do rather than cancel. Behind a winter cold front the wind swings hard into the north at twenty-five to thirty miles an hour under a bright cold sky, and that one cancels outright. Both stir the bottom, so a trip that sails after a blow can still find the visibility gone.
The consequence is the same all year: take the morning boat. Wind in the Keys builds through the day and lies down overnight, which is why the breakfast reef trip sails on days the afternoon slot is called off. With one chance at the reef, spend your first morning on it and keep the sunset sail as the flexible one — sunset boats stay inside the harbour approaches and run in conditions that stop a reef trip.
Hurricane season runs 1 June to 30 November, concentrated between mid-August and mid-October, peaking statistically on 10 September. For a booking that means two things: buy with free cancellation, and do not put a reef trip on the morning of a departing flight. A tropical wave passing a hundred miles south costs two days of sailing without ever becoming a storm you would have heard of.
| Month | Sea | On the water | What it means |
|---|---|---|---|
| January – February | 21 °C (69 – 70 °F) | Full timetable, high season ashore | Cold fronts every week or two; a shorty wetsuit is a fair ask |
| March | 24 °C (75 °F) | Everything, plus spring break | Fronts easing, boats full — book two or three days out |
| April – May | 26 – 28 °C (78 – 82 °F) | Everything | The best window: warm water, settling wind, thinning crowds |
| June | 29 °C (85 °F) | Everything | Hurricane season opens 1 June; afternoon thunderstorms build |
| July – August | 31 °C (87 °F) | Everything, hot | Warmest sea of the year; latest sunset, about 20:21 in early July |
| September – October | 28 – 30 °C (82 – 86 °F) | Running, quietest of the year | Statistical peak of hurricane season falls on 10 September |
| November – December | 22 – 24 °C (72 – 76 °F) | Everything, holiday prices | Season ends 30 November; earliest sunset, about 17:39 |
Extras
Key West has no port tax on day boats and no reserve fee collected at the dock, which is unusual. The costs that catch people out are the ones attached to the trips that are not on this page.
| Item | Amount | Who collects it | When it applies |
|---|---|---|---|
| Dry Tortugas park entrance | 15 USD per person aged 16+, valid 7 days | National Park Service | Inside the Yankee Freedom fare; refunded with an America the Beautiful pass |
| Yankee Freedom day trip | 250 USD adult | Yankee Freedom, Key West Ferry Terminal | The only scheduled boat to Fort Jefferson — nothing here sails there |
| Fort Zachary Taylor entry | 6 USD per vehicle, 4.50 USD single occupant, 2.50 USD on foot | Florida State Parks | Shore snorkelling instead of a reef boat; 08:00 to sundown |
| Old Town garage parking | About 32 USD a day | Garage rates quoted by the ferry operator | Driving in for a morning boat rather than walking |
| Crew gratuity | 15 – 20% is customary | The crew, cash at the dock | Every boat here — no listed price includes it |
| Bar tabs beyond the open bar | Boat prices | The operator | 'Open bar' usually means house beer, wine and rum punch, not spirits |
On the water
Key West's day boats work out of one basin on the Gulf side of the island, while the coral they visit lies six to seven miles south in the Atlantic. The cruise berths are separate, and the sandbar trip leaves from Marathon, off the top of this map.
Questions
From $35 for a three-hour reef snorkel with drinks to $128 for the small-group dolphin and snorkel trip. The middle of the fleet sits between $65 and $93: dolphin combinations at $73, sunset sails at $68 and $73, a dinner cruise at $93. No park fee or dock tax is added, but crew gratuity of 15 to 20 per cent is customary and is in none of those prices.
Almost all from the Historic Seaport around Key West Bight — Sebago at 205 Elizabeth Street, Sunset Watersports at 201 William Street, Fury at 631 Greene Street, six to eight minutes on foot from mid-Duval. Two exceptions: the Dry Tortugas and Fort Myers ferries use the Key West Ferry Terminal at 100 Grinnell Street, and the sandbar excursion leaves from Marathon, forty-eight miles up US-1.
By operator rating, the sunset sail with a live band and appetisers at $73 — 4.8★ across 198 reviews, the highest-scored boat here, and it sails rather than motors. To replace dinner, the buffet cruise at $93 does that; for the cheapest seat under the sunset, the signature sunset cruise at $68 has an open bar, food and music. All three leave the Bight two hours before sundown — anywhere from about 17:39 in late November to 20:21 in early July.
No. The reef tract starts roughly six miles offshore and the sites the boats use — Sand Key, Rock Key, Eastern Dry Rocks — are six to seven miles out in the Atlantic. The closest thing on land is the beach inside Fort Zachary Taylor Historic State Park, 6 USD per vehicle from Florida State Parks, a rocky shore swim with fish rather than coral. The arithmetic block sets the two side by side.
None. Fort Jefferson is seventy miles west and the only scheduled service is the Yankee Freedom from 100 Grinnell Street at 250 USD for an adult day trip, which includes the National Park Service entrance fee of 15 USD per person aged sixteen and over, breakfast, lunch and snorkel gear. Check-in 07:00, back at 17:30 — it takes the whole day and combines with nothing.
Two destinations. The Yankee Freedom runs west to Dry Tortugas National Park; the Key West Express runs north to Fort Myers Beach, a high-speed catamaran crossing of about three and a half hours. There is no passenger ferry to Cuba — the island lies roughly ninety miles south and no scheduled boat service carries travellers there.
Operators rebook or refund, and the listings here cancel free up to 24 hours ahead. The wind that does it is a fresh east or southeast breeze building chop across six miles of open Atlantic, or a hard northerly behind a winter cold front at twenty-five to thirty miles an hour. A middle outcome is common: rather than cancel, the captain moves the stop from the offshore barrier reef to an inshore patch reef or a mangrove channel. Morning boats sail far more often — see the season block.
April, then May. The sea is 26 °C (78 °F) in April and 28 °C (82 °F) in May, the winter cold fronts have stopped and the spring crowd has gone. July and August bring the warmest water of the year at 31 °C (87 °F) and the heaviest heat ashore. September and October are the quietest, cheapest months and also the peak of hurricane season — statistically 10 September — so book with free cancellation.
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