Integral to this success is the wide selection of fun activities and facilities to keep waiting passengers occupied.
An ice rink, casino, spa and sauna represent just a few of the cool distractions on offer.
A five-minute shuttle drive away from the airport, travelers can tee off for a relaxing round on the airport's 18-hole Incheon Golf Club course.
Munich is famed for its Oktoberfest beer festival and the city's airport aims to bring a sample of the alcohol-fueled fun to thirsty passengers.
Airbau, a Bavarian-style tavern complete with its own brewery and traditional German beer-garden, serves up over 110,000 gallons of homemade hops from its home in the airport's Terminal 1 every year.
Like all genuine Oktoberfest celebrations, Airbau also plays host to a lively music program during busy periods and an outdoor beer garden.
Potted plants are a common adornment in many airport waiting areas, but the Qantas First Lounge at Sydney International Airport, Australia, takes green decor to altogether more holistic levels.
The luxury facility is home to a 30-meter vertical garden, comprising 8,400 plants.
The giant installation is incorporated into the facility's restaurant and day spa treatment rooms, where passengers can relax with a massage or refreshing shower.
A business center and library meanwhile offer optimum quiet space for working travelers to hit the books.
At 13.8 meters high and 22.4 meters wide, Hong Kong International's on-site cinema is the world's only airport IMAX and the largest cinema in the Chinese territory.
The giant screen replaced the previous terminal two movie theater, the 4D Extreme Screen, in June last year.
Hong Kong residents as well as travelers are able to access the cinema given its landside position at the airport.
Both 2D and 3D movies are regularly shown, including the latest Hollywood blockbusters and so called "edutainment" features.