A schedule optimization method for international flight considering alliance connection was proposed in this paper to fully leverage the value of alliance cooperation.The optimization model regarded scheduled delay cost of origi-nating nonstop passengers and the transfer time cost of transfer passengers as opportunity cost,and incorporated into the objective function of maximizing the total profits of airlines.The constraints including transfer time,devia-tion coefficient,passenger number limit and arrival time of target flight,were introduced to ensure the smooth con-nection of previous and subsequent flights in the alliance network.A two-stage solution algorithm was designed to ensure both the single optimal time and the overall optimal time for multiple flights within a feasible range.In the case analysis of the route market from Shanghai Pudong International Airport to Los Angeles International Airport,it can increase the profits of airlines by approximately 319000 yuan by operating according to the optimized three flight departure time.The results showed that optimized flight schedules based on alliance connection can effec-tively reduce passenger opportunity costs and increase airline profits,which verifies the model can provide refer-ence for airlines to develop flight schedules with alliance cooperation.
air transportationflight schedule optimizationairline allianceflight connection