Key West Day Trip From Miami
Last reviewed: October 26, 2026. Sources for this page are listed in its fact sheet.
Short answer first. Key West works as a day trip from Miami if you accept what it is: a very long day built around one of America's great drives. The trip is about 160 miles each way, and the Keys portion is the Overseas Highway (US-1), 113 miles from Florida City across 42 bridges. Driving typically takes 3.5 to 4 hours each way. Full day bus tours run about 14 to 15 hours door to door, leave early in the morning, give you several hours of free time in Key West, and were listed on Viator from $39 when checked in October 2026.
Duval Street, Key West, where most day trips spend their island hours. Photo: PeopleByOwen, Pexels.
Bus tour or drive yourself?
The bus is the default for a reason. On Viator in October 2026, the best selling "Miami to Key West Day Trip with Activity Options" ran 15 hours from $39, with other listings at 12 hours from $70 and 14 to 16 hours from $48 to $70. Somebody else drives the causeway both ways, you sleep or watch the water, and the schedule is built so you get several real hours in Key West rather than a photo stop. Driving yourself buys flexibility: leave when you like, stop in Key Largo or Marathon on the way down, and stay for sunset. It also means 7 to 8 hours of your day behind the wheel on a two lane highway where one accident can add an hour, and parking in Key West Old Town at the end of it. If Key West is the point of the day, take the bus. If the drive itself is the point, drive, and consider stopping for the night.
What fits into a few hours in Key West?
Less than you hope, so pick in advance. The essentials cluster in Old Town: the Southernmost Point buoy at the corner of South and Whitehead streets, a painted concrete buoy that is free to access and photograph (expect a line), and Duval Street for the bars, shops, and people watching. With several hours you can do the buoy, a slow Duval Street loop, a proper seafood lunch, and one paid sight if it is near the top of your list. What does not fit is everything: a beach session, a museum or two, and a sunset sail on top. Day trippers who try to do it all remember the rushing, not the island.
What is the drive actually like?
Beautiful and slow, in that order. South of Florida City the road becomes the Overseas Highway, hopping from key to key on bridge after bridge, including the Seven Mile Bridge, with the Atlantic on one side and Florida Bay on the other. The 3.5 to 4 hour typical drive time assumes no long stops and normal traffic; weekends, holidays, and any incident on the single road south stretch it. Build the return into your expectations too: you will do the same road back in the dark, which is the strongest argument for the bus or for staying overnight.
The facts that matter
The Overseas Highway (US-1) runs 113 miles from Florida City to Key West across 42 bridges, including the Seven Mile Bridge (official Florida Keys source). Miami to Key West is about 160 miles in total, and the drive typically takes 3.5 to 4 hours each way without stops; treat that as a typical range, not a promise. The Southernmost Point buoy stands at the corner of South and Whitehead streets in Key West and is free to access and photograph; the buoy's own text marks 90 miles to Cuba. Full day bus tours from Miami were listed on Viator in October 2026 at about 14 to 15 hours door to door, from $39.
See Key West day trips on Viator
Frequently asked questions
How long is the drive from Miami to Key West, really?
About 160 miles, typically 3.5 to 4 hours each way. The Keys segment alone is 113 miles of the Overseas Highway. Traffic, weekend demand, or a single incident on the two lane sections can push it longer, which is why tours leave early.
How much free time do bus tours give you in Key West?
Several hours, enough for the Southernmost Point buoy, Duval Street, and a sit down lunch, with an optional activity on some listings. Check the itinerary split between driving and island time before you book, because total tour length varies from 12 to 16 hours.
Do I need a passport for Key West?
No. Key West is in Florida; it is a domestic trip. The passport required day trip from Miami is Bimini in the Bahamas, which leaves by ferry from Port Everglades in Fort Lauderdale.
Is a day trip better than staying overnight?
Overnight is better if you can spare it: you get sunset and the evening, and the drive splits across two days. The day trip earns its place when Miami is your base and Key West is a box to tick properly rather than a second hotel stay.
Keep planning
Compare this trip with the others in best day trips from Miami. On the way down, the Key Largo snorkeling day trip uses the same highway for its first hour, and the Miami tours hub covers everything that stays in the city.