If the offers provided by buses do not suit your needs, trains and carpooling could represent a good alternative for this distance.
With such a long journey, we would like to give you some advice: you can look for a flight to Porto Alegre, or if your budget is limited, you can check night buses and trains to save the daytime for your visits.
What time are the buses to Porto Alegre?
The earliest time you can leave from Buenos Aires is at 12:03, while the last bus is at 13:03. The journey takes on average 18 hours and 37 minutes but it can also last 18 hours and 15 minutes with the fastest connections.
Which bus lines can take you from Buenos Aires to Porto Alegre?
You can travel by bus from Buenos Aires to Porto Alegre with JBL and Flecha Bus.