根据民航资源网 消息， 3月31日起全国民航将启用2019年夏秋航班计划。航班换季后，季前预定的机票可能出现航班取消或时间变化。
中国民航换季科普
我国民航系统每年一般进行两次航班计划调整。每年3月最后一个周日和10月最后一个周六，执行夏秋季航班计划；10月最后一个周日至来年3月最后一个周六，执行冬春季航班计划。航班换季是为了确保季节更替后旅客的空中交通出行更加合理、便捷。
中航嘉信提醒旅客在出发前提前和航空公司确认航班时刻及动态，以保障出行。
Summer-autumn flight program in civil aviation in China starts on 31 March 2019
As reported by Civil Aviation Resource Net of China (CARNOC), civil aviation in China will initiate the 2019 summer-autumn flight program effective March 31. Tickets booked before this date may encounter flight cancellations or schedule changes.
Seasonal flight program in civil aviation in China
Civil aviation in China changes its flight program twice a year. The summer-autumn program is implemented between the last Sunday of March and the last Saturday of October, while the winter-spring program is between the last Sunday of October and the last Saturday of March next year. This seasonal change ensures that travelers can enjoy a more reasonable and convenient air travel during different seasons.
CWT China reminds travelers to check flight schedule and status with the airlines before departure to secure the trip.
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