O'Hare noise complaints can be reported online or by phone to the O'Hare Noise Compatibility Commission:

Phone: (800) 914-8537
Website: https://oharenoise.org/ 

Report Airport Noise Online 

Mail:
O'Hare Noise Compatibility Commission
P.O. Box 1126
Des Plaines, IL 60017-1126

Joe Annunzio, ONCC Chair