The terminal, which will mostly handle regional flights, is part of the airport’s HK$141.5 billion (US$18.1 billion) expansion project launched in 2016 that also included a third runway. Its coach hall opened in September.
Fred Lam Tin-fuk, chairman of the Airport Authority, said on Tuesday that the first terminal, used mainly for long-haul flights, was busy and that the second terminal would “share some of the flight load”.
“The design philosophy for the entire Terminal 2 aims to be more vibrant, youthful and technologically forward-thinking. It will introduce new self-service facilities and incorporate numerous smart technologies,” he said.
“We have also introduced a wide range of new dining options, which I believe will appeal to everyone.”

Carriers expected to operate out of the second terminal include Hong Kong Airlines, HK Express and Greater Bay Airlines.