Qatar Airways Company Q.C.S.C. operating as Qatar Airways, is the state-owned flag carrier of Qatar. Headquartered in the Qatar Airways Tower in Doha, the airline operates a hub-and-spoke network, linking over 140 international destinations across Africa, Central Asia, Europe, Far East, South Asia, Middle East, North America, South America and Oceania from its base at Hamad International Airport, using a fleet of more than 100 aircraft. The carrier has been a member of the Oneworld alliance since October 2013. It has a customer service responsiveness rating of 3 out of 5.