Construction started in 1987. The sea wall was finished in 1989 (made of rock and 48,000 tetrahedral concrete blocks). Three mountains were excavated for 21,000,000 m3 (27,000,000 cu yd) of landfill. 10,000 workers and 10 million work hours over three years, using eighty ships, were needed to complete the 30-metre (98 ft) layer of earth over the sea floor and inside the sea wall. In 1990, a three kilometer bridge was completed to connect the island to the mainland at Rinku Town, at a cost of $1 billion. 

On 17 January 1995, Japan was struck by the Kobe earthquake, whose epicenter was about 20 km (12 mi) away from KIX and killed 6,434 people on Japan's main island of Honshū. Due to its earthquake engineering, the airport emerged unscathed, mostly due to the use of sliding joints. Even the glass in the windows remained intact. Later, in 1998, the airport survived a typhoon with wind speeds of up to 200 km/h (120 mph).

On 19 April 2001, the airport was one of ten structures given the "Civil Engineering Monument of the Millennium" award by the American Society of Civil Engineers.

Operation
4th floor ticketing hall, illustrating the terminal's airfoil roof.Opened on 4 September 1994, the airport serves as a hub for several airlines such as All Nippon Airways, Japan Airlines, and Nippon Cargo Airlines. It is the international gateway for Japan's Kansai region, which contains the major cities of Kyoto, Kobe, and Osaka. Other Kansai domestic flights fly from the older but more conveniently located Osaka International Airport in Itami, or from the newer Kobe Airport. 

For information regarding transportation, shops and restaurants see the airports own website.