

The National Plan of Integrated Airport Systems for 2011–2015 categorized it as a primary commercial service airport since it has over 10,000 passenger boardings (enplanements) per year. On May 25, 2002, the airport was named in honor of United States Air Force Colonel George Everette "Bud" Day, a Sioux City, Iowa, native who is the only person ever awarded both the Medal of Honor and the Air Force Cross. It is located six nautical miles (7 mi, 11 km) south of the central business district of Sioux City, just west of Sergeant Bluff.

Sioux Gateway Airport ( IATA: SUX, ICAO: KSUX, FAA LID: SUX), also known as Brigadier General Bud Day Field, is a public and military use airport in Woodbury County, Iowa, United States.
