Thirteen flights due to arrive at Hong Kong International Airport (HKIA) in the morning on Apr. 6 were delayed up to more than 10 hours because of heavy fog and low visibility, the Airport Authority Hong Kong (AAHK) said on Apr. 6.

The airport had resumed normal operation by the evening on Apr. 6 after all the flights returned, said the authority.

On Apr. 6, Cathay Pacific, the largest Hong Kong-based airline company, confirmed in the evening that a total of its 10 flights were diverted to other cities because of the heavy fog in the airport in the morning.

Three passenger flights were diverted to Taipei, another 5 passenger flights and one freighter were diverted to Guangzhou and one other passenger flight was diverted to Manila, according to a statement from the company.

All the flights have returned to Hong Kong despite their delay ranging from 1 hour and 39 minutes to 11 hours and 55 minutes, according to the statement.

The company apologized to all the passengers concerned for the delay and said it had made compensation to passengers from two of the flights because of their long delay.

Due to the late arrival of the aircraft into Hong Kong, a number of flights from Hong Kong will also be delayed from 2 hours to about 5 hours on Apr. 7, said Cathay Pacific.

The flights expected to be delayed on Apr. 7 include one from Hong Kong to Taipei and Tokyo, one to Los Angeles and one to London.