Decatur Airport — Decatur, United States

Decatur Airport, coded DEC, serves Decatur, Illinois, a mid-sized city in the state's agricultural heartland known for corn processing and companies like Archer Daniels Midland. The airport offers scheduled commercial service on a smaller scale, typically through regional partners connecting to major hub airports such as Chicago, alongside general aviation, corporate, and flight training activity. DEC has historically supported the logistics needs of the region's grain processing and manufacturing industries, and its runway infrastructure accommodates regional jets as well as smaller aircraft. As with many secondary Midwestern airports, passenger volumes are modest and service levels have shifted over the years depending on airline route economics and federal subsidy programs.