China Sonangol International Airlines, formerly known as SonAir, is a joint venture of Sonangol Group, the National Petroleum Company of Angola and the Hongkong based China International Fund. Its core business is helicopter transportation services to the oil industry operating in Angola, by ferrying people from and to onshore and offshore facilities, and beyond that they also provide worldwide air services for other businesses and single entities. Occasionally the company provides charter services within Africa.
Domestically they also provide air transportation to several business groups - private and government, outside the oil business.
The company is also the first to provide direct transportation of passengers and cargo between Angola and the United States. The airline provides thrice-weekly services from Luanda to Houston on a Boeing 747-400 (10 First Class, 143 Business Class and 36 Economy Class seats) operated by Atlas Air.