More than 20 million flight tickets worth over 20 billion yuan have been refunded by Chinese and foreign airlines so far due to the novel coronavirus outbreak, an official from China's Civil Aviation Administration said on Saturday.

Between January 25 and February 14, the average daily passenger traffic for civil aviation stood at 470,000, a 75 percent fall from the same period last year, Civil Aviation Administration of China Deputy Administrator, Li Jian told reporters at a media conference on Saturday.

China has issued four consecutive free refund policies since January 21 and Li said forecast of passenger flow in the following days remains low.