This initiative is part of a campaign sponsored by the Airport Authority Hong Kong to encourage global travelers to visit Hong Kong after more than three years of Covid restrictions.
The campaign, called World of Winners, will be launched in phases for Southeast Asia, beginning with Thailand, Singapore and the Philippines on March 1, 2 and 3 respectively, the carrier said on its website.
Malaysia, Indonesia, Vietnam and Cambodia would be the next two weeks later.
To qualify for a ticket, one must be a Cathay member by signing up via the website.
The campaign in Vietnam is expected to run from March 17 to 23, and will see 8,800 free tickets given to Vietnamese people.
Each participant is only allowed one entry and the winners will be announced on the campaign website on April 4.
Hong Kong welcomed 600,000 visitors in 2022, only 1% of its 2019's figure.