What month is the off-season of civil aviation?

March, April, November and December. China Airlines official website inquired that the off-season of civil aviation is March, April, 1 1 month and1February, and the ticket prices are relatively cheap. Civil aviation refers to the use of aircraft to engage in aviation activities other than national defense, police and customs. Civil aviation activities are a part of aviation activities. At the same time, its boundary with aviation manufacturing industry is defined by "using" aircraft, and it is distinguished from military aviation and aviation activities of other countries by "non-military nature". Provisions on Domestic Investment in Civil Aviation Industry (Trial) came into effect on August 5, 2005.