支线航班,是指座位数在50座到110座左右、飞行距离在600公里到1200公里之间的小型客机运载的、短距离的非主航线航班,主要飞往于各省二三线的中小城市之间。改革开放以来,我国民运航空市场取得了长足的进步,以中心辐射式为主的干线枢纽航空市场运营体系日益庞大并趋于完善,但我国支线航空市场发展不足,且大多发展于中西部地区,尤其是西南地区。~①与此同时,支线航空票价都比较高。在距离大致相同的条件下,从中枢式主流机场飞往 Regional flights, refers to the number of seats in the 50 to 110 seats, flight distance between 600 km to 1,200 km small passenger aircraft, short-range non-main route flights, mainly to the provinces of second and third tier cities between. Since the reform and opening up, great progress has been made in China’s aviation market for civilian transport. The operation system of the aviation market, with a hub-centered radiation hub as the main hub, has become increasingly large and tends to be perfect. However, the development of regional aviation market in our country is underdeveloped and mostly developed in central and western regions. Especially in the southwest. ~ ① At the same time, regional airline fares are relatively high. At approximately the same distance from the hub of the mainstream airport