China's civil aviation system has to adjust its flight plan twice a year, from Sunday in the last full week of March to Saturday in the last full week of 10 every year, and implement the flight plan in summer and autumn; 65438+ 10 The winter and spring flight plan will be implemented from Sunday of the last full week in June to Saturday of the last full week in March of the following year.

The reason for the change of flight season

The main reason why flights change seasons is to adapt to the time conversion from winter time to daylight saving time in some countries.

The secondary reason is, on the one hand, considering the off-season of tourism and the periodicity of people's travel. According to different flight seasons, airlines will adjust existing flights in the new flight season with reference to flight income. For example, Sanya has fewer flights after changing seasons in spring, because summer is usually the off-season of Hainan tourism and there are few tourists, so airlines reduce flights accordingly. In winter, it is very cold in the north. Sanya has a warm and pleasant climate, which is more popular in winter, and the number of flights will increase accordingly.

On the other hand, according to the actual situation of our country, the weather and air pressure in spring, summer, autumn and winter are very different, which leads to great differences in flight standards. Airlines adjust flights, on the one hand, for safety, on the other hand, for the convenience of passengers.

Refer to the above? Baidu encyclopedia-flight season change