How many hours does it take to fly from Beijing to Guangzhou?

It depends on which airline you are flying. Generally speaking, it takes about 3 hours for China Southern Airlines, 0/0 minutes for Air China/KLOC and 3 hours and 25 minutes for Hainan Airlines, which is basically an average of 3 hours. It depends on which airline you choose. The linear distance from Guangzhou to Beijing is almost 1900 km, about 2300 km. How long it takes depends on how fast you drive.