Question : Over the coming months, which airline is getting their passengers to Sao Paulo-Guarulhos International Airport (GRU) round-trip the cheapest?
Answer : Air China is your best bet for finding that coveted low fare. They're offering fares as low as $1,667, while prices for other flights are as high as $13,657.
Question : Do prices fluctuate more for this route than others?
Answer : Flight prices are fluctuating a lot more for this route than most routes from China, as they're ranging anywhere from $1,667 to $13,657. However, the sooner you book, the better price you tend to get.