expression, noun
airport; gateway to the skies
A poetic or journalistic set phrase for an airport, literally 'gateway to the sky'. Used to emphasize an airport's role as a point of arrival or departure, often in tourism or promotional contexts.
See also: 空港
新千歳空港は北海道の空の玄関です。
New Chitose Airport is Hokkaido's gateway to the skies.