World's most luxurious airports and lounges From spas, to golf and rainforest walks, we reveal which airports are the best for pre-flight pampering. Incheon International Airport, South Korea One of the busiest airports in the world, Incheon offers plenty of opportunity for relaxation, including a spa and sauna, Thai massages and private sleeping rooms. The airport was recently named "best airport in the world" at the World Airport Awards based on passenger experience. There is an outpost of the Cultural Museum of Korea, which includes a section on Buddhist arts, no less than seven gardens and an observation deck with upscale relaxed seating.