Taking the ferry from Buenos Aires to Montevideo is a great way to get from Argentina to Uruguay.
Montevideo is around 140 miles from Buenos Aires, so transportation by ferry is quick and simple.
The hydrofoil ferry from Buenos Aires to Montevideo is the fastest way to get between the two capital cities.
Buquebus is the company that runs ferries to Montevideo. You can take a regular 2.5 hour ferry or an express 1 hour ferry ride from Puerto Madero in Buenos Aires to the Montevideo ferry terminal.
When you travel, make sure to remember that there is a one hour time difference between Argentina and Uruguay.
The ferry from Buenos Aires to Montevideo can cost as low as US$40 if you do not get a first class ticket.