Key Largo is reached by road via U.S. 1 (Overseas Highway) from the Miami area.

Fly into Miami (MIA) for the shortest drive, or Fort Lauderdale (FLL) for more low-cost carrier options.
Rent a car for maximum flexibility; U.S. 1 is the only route into the Keys.
Dive boats depart from Key Largo marinas and park concessions; plan to be in town the evening before early departures.

Best gateway airport for Key Largo with broad domestic and international service.

Key Largo is reached by road via U.S. 1 (Overseas Highway) from the Miami area.

Fly into Miami (MIA) for the shortest drive, or Fort Lauderdale (FLL) for more low-cost carrier options.
Rent a car for maximum flexibility; U.S. 1 is the only route into the Keys.
Dive boats depart from Key Largo marinas and park concessions; plan to be in town the evening before early departures.

Best gateway airport for Key Largo with broad domestic and international service.

Good alternate gateway with many domestic routes and budget carriers; longer drive than MIA.

Useful if you are combining Key Largo with a Lower Keys itinerary; expect a longer drive north on U.S. 1.

A rental car is the simplest way to move between marinas, parks, and restaurants.
Ride-share and taxis exist but can be inconsistent compared to major cities.
Biking is possible for short distances, but heat and afternoon storms can be limiting in summer.
If you do not have a car, consider staying near your chosen dive operator and booking shuttles for airport transfers.

Key Largo is in the United States.

Domestic travelers: standard government-issued photo ID for flights; no border formalities.
International travelers: follow U.S. entry requirements (passport, ESTA or visa as applicable).
Divers should travel with proof of certification and bring log history if you plan deep wreck dives.

Flying with dive gear: pack regulators and computers in carry-on when possible; put knives, shears, and tools in checked bags.
Tanks and weights: rent locally; do not plan to fly with them.
Rinsing and drying: many operators have rinse stations, but bring a mesh bag and plan drying time between consecutive dive days.
If you are doing wrecks, ask your operator about current expectations and whether a reef hook or redundant gas is recommended for your experience level.

USD is used everywhere. Cards are widely accepted at resorts, dive shops, and restaurants, but carrying some cash is useful for tips and small purchases.

ATMs are available along U.S. 1 in Key Largo and Tavernier, plus at banks and many grocery stores. Offshore days can mean limited connectivity, so do not rely on mobile payment for tipping.

U.S.-standard outlets. Most travelers will not need an adapter if coming from North America.

Communications

Cell coverage is generally good along U.S. 1, but can weaken offshore and in some mangrove areas. Most lodging offers Wi-Fi. If you rely on connectivity for navigation, download offline maps before heading out on the water.

Language

English is the default language. Spanish is commonly spoken in South Florida and you will hear it frequently in the Keys.

Insurance

Carry dive accident coverage (many divers use DAN) plus standard travel insurance if you are traveling in hurricane season. For wreck dives and deep profiles, confirm your coverage matches your training level and dive plan.

Packing list

Sun protection: hat, polarized sunglasses, reef-safe sunscreen, and a rashguard
Exposure: 3mm for warm months; 5mm (or extra layers) for winter and long dive days
On-water essentials: dry bag, reusable water bottle, motion-sickness plan if needed
Dive essentials: SMB, computer, save-a-dive kit basics, and a towel for boat days
Bug protection: repellent for mangrove paddling and evening outdoor dining

Key Largo

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