WSJ reports:

Stories of travel in Chinese airports are a horror genre in their own right, and with good reason: When it comes to on-time arrivals or departures, the country’s airports are literally the worst in the world. According to FlightStats, which tracks airport statistics, Beijing’s airport ranks dead last among the world’s top 35, with fully 82% of flights failing to leave on time. Second worst was Shanghai, at 71%.

Read more: http://blogs.wsj.com/chinarealtime/2013/07/12/china-airports-worlds-worst-for-delays/