针对空中航线选择优化问题,分析了空中交通流的特点。结合航班在航线上等待点空中盘旋的情况,考虑从求解空中飞行时间最短的角度,建立了航线网络中航班最小费用流问题的数学模型,给出了求解这种最小费用流的算法。通过航线网络的简单算例,求出了最佳航线以及相应航线流量,说明了模型和算法的具体应用。 In view of air route selection and optimization, the characteristics of air traffic flow are analyzed. Considering the shortest flight time from the point of view of flight time, a mathematic model of minimum cost flight problem in airline network is established, and an algorithm to solve this minimum cost flow is given. Through a simple example of route network, the best route and the corresponding route traffic are obtained, and the concrete application of the model and algorithm is illustrated.