What is "sonair"

SonAir Airline Services, S.A. , commonly known as SonAir, is a venture of the Angolan national petroleum company Sonangol Group. It provides helicopter services to Angolan oil facilities, both onshore and offshore, as well as scheduled and charter services within Africa and to the United States.

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 between Luanda (LAD) and Houston (IAH) utilizing a Boeing 747-400 (10 First Class, 143 Business Class and 36 Economy Class seats) operated by Atlas Air.