The Company is the largest domestic and international airline group based in Australia, engaged in the operation of international and domestic air transportation services and airline related services, such as the provision or freight services and the operation of the Qantas Frequent Flyer loyalty program. The Company's main business is the transportation of customers using two complementary airline brands - Qantas and Jetstar. The Company also operates subsidiary businesses including other airlines and businesses in specialist markets such as Q Catering, Qantas Freight Enterprises, and Qantas Frequent Flyer, as well as being the cornerstone investor in Jetstar-branded airlines across Asia Pacific.