--FILE--un Boeing 737 piano di getto di Hainan Airlines decolla presso l'Aeroporto Internazionale di Sanya Phoenix di Sanya, sud Chinas Hainan provincia, 29 Apri
--FILE--A Boeing 737 jet plane of Hainan Airlines takes off at the Sanya Phoenix International Airport in Sanya, south Chinas Hainan province, 29 April 2013. China is warming to the idea of domestic budget flights and demand will be tremendous as airlines rethink their offerings to compete with high-speed rail and road travel, HNA Group Co. Chairman Chen Feng said. Mr. Chen, the founder of Chinas fourth-biggest airline, said the development of budget-carrier services in the country is an inevitable trend even though local airlines have been slow to adopt the low-cost model. High-speed trains running throughout the country have stolen away customers on short-haul domestic routes, he said. Mr. Chen said HNA Group, which has businesses ranging from transportation to hotels, has converted its regional carrier Hong Kong Express Airways and Chongqing-based West Air Co. into low-cost airlines, in competition with the nations sole budget operator Spring Airline Co.