Miami to Key West: drive, bus tour or fly, compared honestly

Last reviewed: November 7, 2026. Sources for this page are listed in its fact sheet.

Short answer first. Miami to Key West is about 160 miles. Driving takes 3.5 to 4 hours each way in normal traffic on the Overseas Highway, and it's the right answer if you have two days or more. A guided day tour runs about 15 hours door to door and gives you about 6 hours in Key West, and it's the right answer if you have exactly one day and don't want to drive it. Flying takes about an hour in the air on American Airlines, the only nonstop carrier between MIA and Key West, and it's the right answer if you're staying over and your time costs more than the fare. And the ferry? There isn't one. No passenger ferry sails from Miami to Key West, and the page below shows where the one Florida ferry to Key West actually leaves from.

The Seven Mile Bridge near Marathon, in the Florida Keys. Photo: Mikhail Nilov, Pexels.

Option one: drive the Overseas Highway

The drive is the trip for a lot of people. US-1 runs about 160 miles from Miami to Key West, and the Overseas Highway portion covers 113 miles and 42 bridges, with the Seven Mile Bridge near Marathon as the stretch everyone remembers. In normal traffic, budget 3.5 to 4 hours each way. On a holiday weekend, budget more and leave early, because one slowdown on a two lane section sets the whole chain back. Two stops earn their time. Bahia Honda State Park, at 36850 Overseas Highway on Big Pine Key, Mile Marker 37, just west of the Seven Mile Bridge, has the beach people picture when they picture the Keys. The Seven Mile Bridge itself is the second stop, even if your stop is only the parking area at the end for the view back.

Driving wins on freedom and loses on the return. You'll stop where you want, carry what you want, and set your own Key West hours. You'll also drive 3.5 to 4 hours home after a full day in the sun, and Key West parking near Duval Street costs money and patience. If there's one driver and one day, that's the combination that turns people toward the tour bus. Two drivers, or an overnight, flips it back.

Option two: the day tour bus

The day tours sold on Viator follow a set pattern, and the pattern is the product: hotel pickups between about 6:00 and 7:30 a.m., arrival in Key West around 11:30 a.m., departure at 5:30 p.m., and about 6 hours of free time in between, inside a day of about 15 hours door to door. You sleep on the bus in both directions, somebody else watches the causeway traffic, and you spend your energy on Key West itself. The Key West day trip from Miami on Viator is the version already wired on this site, and our Key West day trip page works through what to do with the 6 hours once you land.

The trade is fixed hours. Six hours covers Duval Street, a harbor walk, lunch, and one paid extra if you book it tight, a snorkel trip or the trolley tour, not both with room to breathe. If your list needs sunset at Mallory Square, the day tour leaves too early. That's an overnight trip wearing a day trip's clothes.

Option three: fly, about an hour in the air

American Airlines is the only carrier flying nonstop between Miami International and Key West International, on American Eagle regional jets, with scheduled flight times of about 1 hour 2 minutes to 1 hour 6 minutes across multiple daily flights in the listings checked November 7, 2026. Door to door, count the airport time at both ends: the flight wins big for an overnight or a weekend, and it wins less than you'd think for a single day, once check-in, the ride into Key West from the airport, and the return deadline are stacked against the tour bus's hotel pickup. Where flying really pays is the two night version. You land fresh, you get two sunsets, and the drive's 8 hours of highway never happen.

The ferry that does not exist

Search results keep implying a Miami to Key West ferry. There is none, and there hasn't been one in the current market. The Key West Express is the real ferry to Key West, and it sails from Fort Myers Beach, on Florida's Gulf side: terminal at 1200 Main Street, Fort Myers Beach, boarding from 7:00 a.m., aboard by 7:30 a.m., departure at 8:00 a.m., about 3.5 hours to Key West, and a 6:00 p.m. departure back, per the operator. Older listings mention a Marco Island departure; the operator's current site lists Fort Myers Beach only, so don't build a plan on Marco Island. From Miami, Fort Myers Beach is a cross-state drive in the wrong direction. The ferry is a fine product for a Gulf Coast trip. It is not a Miami plan.

So which one, by trip shape

One day, no second driver: the tour bus. One day, you love the road: drive, leave before 7 a.m., and accept the late return. Two nights or more: drive if the Keys stops are half the point, fly if Key West itself is the point. A cruise or flight deadline the same evening: fly, or don't go. The highway gives no refunds for traffic. And if Key West is step one of a bigger plan, our Dry Tortugas day trip explains why the ferry to Fort Jefferson needs a Key West overnight in front of it, whichever way you reach Key West.

Frequently asked questions

Can I do Key West as a day trip from Miami at all?
Yes, and thousands do. Just pick the version with open eyes: 6 hours in town on the bus, or a long driving day of your own.

Is the drive hard?
It's long, flat and mostly two lanes in the Keys. The hard part isn't skill, it's the return leg after a full day out. Split the driving or stay over.

What about a boat from Miami?
Private charters exist, but there's no scheduled passenger ferry. If a listing implies a Miami ferry departure, check the terminal address. It will say Fort Myers Beach.

Keep planning

Next steps: the Key West day trip page, the Dry Tortugas day trip, Miami day trips on Viator, and Miami Beach hotels on Expedia for the nights at this end.