Rapid growth
"The problem can't be resolved in a short period as it results from many elements, such as an inefficient air traffic control system," said Zhao Yifei, a professor studying air traffic management at Civil Aviation University of China.
"We have been witnessing a tremendous increase in air transport over the past decade and many other sectors in this industry couldn't keep step with the rapid growth in the number of flights," he said, citing that the US also had a difficult time in the 1960s and 1970s to maintain flight punctuality.
"Every country has to face this problem when their civil aviation market begins to flourish."
For passengers, delays are expected to occur less after the summer, but in the long term many will still have to sit in a seat waiting for a delayed flight until the government allows more access to the airspace, Li added.
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