In a little over an hour, a fast ferry can carry you across the Río de la Plata from the bustle of Buenos Aires to the cobblestone calm of a UNESCO World Heritage town in another country. That short crossing is why a day trip from Buenos Aires to Uruguay is one of the most rewarding additions to any visit to the Argentine capital. Whether you are drawn to the Portuguese colonial streets of Colonia del Sacramento or the laid-back capital of Montevideo, Uruguay sits close enough to enjoy in a single day — if you plan the timing well. This guide covers the ferry options and travel times, what you can realistically see in a day, the practical points to know before you go, and how to decide which destination suits your trip.
In this guide
- Colonia or Montevideo: Which Day Trip Is Right for You?
- Ferry Options and Travel Times
- A Day in Colonia del Sacramento
- A Day in Montevideo
- Practical Tips Before You Cross
Colonia or Montevideo: Which Day Trip Is Right for You?
The first decision is where to go. Colonia del Sacramento is the easier and more popular day trip: its historic quarter is compact, walkable, and just a short ferry ride away, making it perfect for a relaxed single day. Montevideo, Uruguay’s capital, is farther and larger — doable in a day but better suited to those who want a city rather than a postcard town, or who can spare an overnight. If this is your first crossing and you have one day, Colonia is the natural choice. If you have already seen Colonia or want a fuller taste of Uruguayan city life, Montevideo rewards the longer journey.
Ferry Options and Travel Times
Several ferry companies operate the crossing from the Buenos Aires terminal, and choosing the right service shapes your whole day.
- To Colonia del Sacramento: the fast ferries take roughly one hour to an hour and fifteen minutes, while slower services take around three hours. For a day trip, always take the fast ferry both ways to maximize your time on the ground.
- To Montevideo: a direct fast ferry takes about two hours and fifteen minutes, while the cheaper ferry-plus-bus combination via Colonia takes closer to four or five hours each way — too long for a comfortable single day, which is why the direct service is worth it.
Take an early-morning departure and a late-afternoon or evening return to give yourself the fullest possible day. Because schedules and immigration formalities matter here, having the tickets and timing arranged in advance removes the stress. Our team can build this into your Buenos Aires stay through curated Uruguay day trip packages that include the ferry and a local guide.
A Day in Colonia del Sacramento
Colonia is made for wandering. The Barrio Histórico, a UNESCO World Heritage Site, is a pocket of Portuguese and Spanish colonial architecture where the streets are cobbled and the pace is gentle. The most famous corner is the Calle de los Suspiros, the Street of Sighs, a short cobblestone lane that looks much as it did centuries ago. Climb the lighthouse, El Faro, for a panoramic view over the red rooftops and the river, pass through the old city gate, the Puerta de Campo, and settle into a riverside café for lunch as the afternoon light turns golden. The whole historic quarter can be explored comfortably on foot in a day, and renting a small electric cart or bicycle lets you reach the leafier outskirts and waterfront.
A Day in Montevideo
Montevideo offers a different rhythm — a real working capital with a relaxed coastal soul. Start in the Ciudad Vieja, the Old City, where historic plazas and the grand Plaza Independencia anchor the center. The Mercado del Puerto is the essential stop for lunch, a covered market famous for its parrillas where Uruguayan beef is grilled over open flame. With time left, follow the Rambla, the long waterfront promenade that locals stroll at all hours, for a sense of the city’s easygoing character. Montevideo asks for a longer day and an earlier start, but it rewards you with a capital that feels authentic rather than touristic.
Practical Tips Before You Cross
- Bring your passport. This is an international crossing between Argentina and Uruguay, and you clear immigration at the terminal — conveniently, often for both countries in one place before boarding.
- Arrive early at the terminal. Allow time for check-in and immigration so you do not miss your departure.
- Book the fast ferry in advance. Popular departures sell out, especially in summer and on weekends.
- Carry some local currency or a card. Uruguay uses its own peso, though many places near the tourist areas accept cards and US dollars.
- Entry requirements can change. Confirm current documentation rules for your nationality before you travel.
Conclusion
A day trip across the Río de la Plata adds a whole second country to a Buenos Aires holiday, whether you choose the storybook streets of Colonia or the lively markets of Montevideo. With the ferry timed well and the logistics handled, it is one of the easiest and most memorable escapes from the city. Book Uruguay day trips at www.01argentina.com — our local experts handle the ferry tickets and guides, with WhatsApp available for a fast response.
By Laura, Buenos Aires Local Guide & Planner at 01Argentina Travel Agency
