Key West to Havana Sea Distance Calculator

Calculate the exact nautical distance from Key West, United States to Havana, Cuba. Plan your maritime journey with our professional route calculator.

Distance: 108 nm; nautical miles
Under Sail: 22 hours; at 5 knots
Under Power: 11 hours; at 10 knots
Best Time: December-April; Typical Sailing Season

Distance follows a sea-lane route. Sailing times are estimates at fixed cruising speeds and vary with vessel, weather, and currents.

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Distance: 108 nautical miles

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This map shows the direct sea route from Key West to Havana. The actual sailing path may vary based on weather conditions and navigation requirements.

Passage details

This is a moderately indirect coastal passage: the navigable route runs 17% longer than the 92 nm direct line, its heading turning from west-southwest to south. It is an international crossing between two countries.

Sea distance: 108 nm (200.1 km)
Direct line: 92.3 nm17% longer
Great-circle bearing: 201° (south-southwest)
Sea area: Caribbean Sea
Geographic extent: 1.4° × 0.7°
Crossing: Cross-border · Same region
From: Key West (United States) 24.5551, -81.7800
To: Havana (Cuba) 23.1136, -82.3666
Route basis: Sea-lane route

Passage timeEstimated passage time by cruising speed
Cruising speed	Duration
5 kn	22 hours
8 kn	14 hours
10 kn	11 hours
12 kn	9 hours

Distance follows a sea-lane route generated from marine traffic lanes; passage times are computed at fixed cruising speeds.

Read the methodology — How we calculate sea distances

Last reviewed 2026-06-17

About Key West to Havana Route

The maritime route from Key West to Havana is a day-passage cross-border passage linking the mainland to an island anchorage in the Caribbean region. Mariners on this leg typically prepare for the hurricane season June through November.

This route runs between neighbouring ports of the same region, connecting Key West in United States with Havana in Cuba.

Navigation Tips

•On this day-passage cross-border crossing in the Caribbean region, prepare for the hurricane season June through November, particularly in peak season.
•For a day-passage route, plan fuel and provisioning around the Caribbean region — calculate consumption with our tool.
•Verify port-entry requirements at both ends of this cross-border route between neighbouring ports of the same region before you depart.
•Check safety gear suited to Caribbean conditions before a day-passage passage — life rafts, EPIRB, and current charts.
•Carry passports, vessel documents, and crew lists matched to this cross-border route between neighbouring ports of the same region.

More Routes from Key West

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Frequently Asked Questions

How far is it from Key West to Havana by sea?

The sea distance from Key West to Havana is approximately 108 nautical miles — a day-passage passage in Caribbean.

How long does it take to sail from Key West to Havana?

A day-passage between neighbouring ports of the same region crossing of 108 nautical miles typically takes 11 hours – 22 hours, depending on vessel and weather.

What's the best time to sail from Key West to Havana?

The best time for this route in Caribbean is December-April, when conditions are most favourable; expect the hurricane season June through November outside that window.

Plan Your Perfect Maritime Journey

Use our advanced calculator above to customize your route, add waypoints, calculate fuel costs, and share your journey plan with crew members.

Plan another route with our Sea Distance Calculator Navigation Guide