The payout has been launched on the authority's My HKG mobile application, with claims automatically made only to members of "HKairport Rewards."

My HKG is an app aimed at providing real-time flight information and allowing travelers to preorder services and food.

An instant messaging chat box in the app provides information about flights, facilities and navigating assistance.

Travelers can manage their delayed flight insurance through the app as well.

To receive the flight delay insurance, travelers must scan boarding passes on the app at least an hour before flight departure.

The HK$300 payout will be automatically transferred into travelers' registered bank account or Faster Payment System account without the need for extra applications.

Travelers may download My HKG from the mobile app store or visit the airport's website for further information.

The insurance claims are not applicable if flights are delayed due to weather, strike or war.

However, only travelers aged 18 or above are eligible to apply for HKairport Rewards membership, which allows travelers to earn reward points for any purchase made at the airport or on the HKairportshop website at https://www.hongkongairport.com/en/flights/MyHKG-mobile-app/

General manager for data analytics and smart airport Chris Au Young said: "The provision of My HKG as a platform for the pioneering product demonstrates Airport Authority Hong Kong's effort in striving to go beyond what a traditional airport offers to passengers."

That came as the airport handled 120,000 passengers and 14,875 flight movements last month, an increase of 48.1 percent and 18.4 percent a year ago. There was a significant increase in outbound transfer passengers from the mainland to north America.

Cargo throughput also went up 10.1 percent to 478,000 tonnes, with the most significant surge in those to and from north America, Europe and southeast Asia.