The Fly Quiet Program is a voluntary program that encourages pilots and air traffic controllers to use designated nighttime preferential runways and flight tracks developed by the Department of Aviation in cooperation with the O'Hare Noise Compatibility Commission, the airlines, and the air traffic controllers. These preferred routes direct aircraft over less populated areas, such as forest preserves, highways, as well as commercial and industrial areas.

As part of the Fly Quiet Program, the Chicago Department of Aviation prepares a Quarterly Fly Quiet Report. This report is shared with Chicago Department of Aviation officials, the O'Hare Noise Compatibility Commission, the airlines, and the general public. The Fly Quiet Report contains detailed information regarding nighttime runway use, flight operations, flight tracks, and noise complaints and 24-hour tracking of ground run-ups. The data presented in the Fly Quiet Report is compiled from the Airport Noise Management System (ANMS) and airport operation logs.

This information was prepared in consultation with the O'Hare Noise Compatibility Commission.  Please click on the various color boxes for more information:

• NEW Fly Quiet Manual - 2010 (PDF)



• Ground Run-Up Web Page



• Quarterly Reports



• Abbreviations, Acronyms, & Glossary of Terms