The weekend before, passengers in Shanghai tried to rip off an attendant's name badge before hitting her. In the fracas, two airport staff were injured and three passengers arrested.
At the end of June, a primary school teacher lost control when her flight from Wenzhou to Beijing was cancelled, slapping and kicking an Air China attendant to the ground. "I waited there for such a long time. Nobody served me a bottle of water or a piece of cake or anything," Liu Weiwei said in her defence.
In March, Graham Fewkes, a British businessman based in Hong Kong, told the South China Morning Post he had witnessed cheers when a passenger assaulted a stewardess on a delayed flight to the island of Sanya.
Hong Kong Airlines last year said it had an average of three incidents involving disruptive passengers every week and has introduced training in wing chun, a form of kung fu, for its cabin crew.
The situation at China's airports is now so volatile that staff have been told not to announce any major delays.
The problems have been caused by a sudden surge in air traffic, flowing into skies that are tightly controlled by the People's Liberation Army.
With only a few permitted routes, problems such as bad weather often force airlines to hold back flights rather than divert them.
Marco Pearman-Parish at Corporation China, a consultancy that helps companies establish a presence in China, said about 60 per cent of his clients at a recent meeting were considering moving their operations away from Beijing because of the constant problems at the airport. "The delays are making it impossible to do business."