Aircraft Noise Complaints

Official aircraft noise complaints include all complaints submitted via telephone to the O'Hare Noise Hotline, via our online form, or via the CHI311 mobile app. The complaints are then forwarded to the Chicago Department of Aviation (CDA) for tracking purposes only and will be included as data in the Airport Noise Management System​ reports.

There are three official ways to submit a complaint:​

Submit Complaint via Telephone

The CDA maintains a toll-free noise hotline (1-800-435-9569 for suburban communities or 311 within the City of Chicago) for citizens to express their concern about particular aircraft events or aircraft noise levels in general.


Submit Complaint via Online Form

In June 2009 the City of Chicago launched a webpage where complaints may be entered directly online. The link below leads to the City's 311 System where one can fill in information about a noise event.

Submit Aircraft Noise Complaint Online

If you are trying to enter a complaint online and are receiving an error message, please call the Noise Hotline and let the operator know the webpage is down.


Submit Complaint via CHI311 Mobile App​

In December 2018 the City of Chicago launched a modernized 311 system making it easier​ for residents to access city services with an updated system that's more accessible, transparent, and user-friendly.​ Residents who would like to request a city service​ can download the free CHI 311 mobile app from the Apple Store or Google Play, or​​ visit to begin to use this new and improved channel for available city services.​