[11/05/2015 @ 6:24 AM] Expiring this duplicate post. Removing from deal list. This sale is covered in better detail in another post.
Aeromexico has round-trip flights from Houston (IAH / HOU) to Sao Paulo, Brazil (GRU) starting at $598 with a connection. Flights from November to February’2016. Some dates have long layover times.
Note: United and Azul have flights into Sao Paulo (VCP) for $563. VCP is further out than GRU, but the price is cheaper. If you rather be in GRU, then book the Aeromexico flight.