Flight Guarulhos International Airport departs from Sao Paulo Guarulhos International Airport at 13:00 and arrives at Buenos Aires Ministro Pistarini International Airport at 15:55.
The flighttime is about 14h 55m. The distance travelled ("as the bird flies"): 1542 Km. So the average speed is roughly 103 Km.
There is an 12 hour time difference between Sao Paulo and Buenos Aires