All Employees: Transportation and Utilities: Air Transportation in Illinois was 35.70000 Thous. of Persons in March of 2022, according to the United States Federal Reserve. Historically, All Employees: Transportation and Utilities: Air Transportation in Illinois reached a record high of 47.20000 in August of 2001 and a record low of 31.70000 in September of 2009. Trading Economics provides the current actual value, an historical data chart and related indicators for All Employees: Transportation and Utilities: Air Transportation in Illinois - last updated from the United States Federal Reserve on April of 2024.