- The Sedalia Airport, also known as Smart Field, is a public use airport located in Pettis County, Missouri, United States. It is situated approximately five nautical miles northeast of the central business district of Sedalia. The airport covers an area of 603 acres and has one asphalt runway. It is primarily used for general aviation purposes and offers services such as fueling, hangar rentals, flight instruction, aircraft maintenance, and aircraft sales. The Sedalia Airport is managed by the City of Sedalia and has a fixed-base operator (FBO) providing various aviation services to pilots and passengers.