An airport that handles international flights; has immigration and customs facilities and is used for travel to and from other countries.
成田は日本を代表する国際空港の一つだ。
Narita is one of Japan's representative international airports.
国際空港では出国手続きに余裕を持って到着してください。
Please arrive at the international airport with plenty of time for departure procedures.
国際空港から直行便で目的地へ向かった。
We took a direct flight from the international airport to the destination.