I want to know the flights to South America

1. I don't think there is any direct flight to South America from Hong Kong. Even in the West Coast of the United States, there is seldom direct flight to South America. South America continent is in genernal south of the East Coast of North America continent.

Typical flight route from HK to S.Amer:
HK ==> West Coast of U.S. (SF or LA) ==> East Coast of U.S. (usually Miami) ==> South American countries

The only exception is Mexico; because it is closer to California, sometimes there are direct flights from West Coast of U.S. to Mexico.

2. Go to the travel agent or travel website and ask them to give you an itineary. Airlines form alliances to provide more effective and economical services. Just look at the itineary and price and decide which one to go with.

1. 去南美香港就無直航機，如果你唔想0係美國轉機可以考慮下o係南非/歐洲轉。
舉個例子：香港經南非約翰尼斯堡飛巴西聖保羅要27小時，經法蘭克福時間也是差不多，中間大約等2-3小時轉機，尚可接受。
2. 一般國泰都係比UA貴D，不過最好都係 CHECK 下 Agent，可能有 Special Offer 都唔定。