Illinois Aircraft Noise Law: Statewide Noise Ordinances Rules (2026)

Key Facts

Preemption source: Federal Aviation Act
State statute: 620 ILCS 5
Local authority: None over flight
Complaint route: FAA and airport operator

Full Breakdown

Under the Federal Aviation Act (49 U.S.C. 40103) and the Airline Deregulation Act, the FAA holds exclusive authority over navigable airspace, flight paths, altitudes, and aircraft noise emissions. The Illinois Aeronautics Act (620 ILCS 5) recognizes federal supremacy and the Illinois Pollution Control Board's noise rules at 35 Ill. Adm. Code 901 do not apply to aircraft in flight. Municipalities cannot impose decibel limits, curfews, or routing rules on aircraft. Limited authority remains with airport proprietors subject to FAA approval under the Airport Noise and Capacity Act (49 U.S.C. 47521).

Violations & Penalties

Local ordinances attempting to regulate in-flight aircraft noise are unenforceable and may be enjoined in federal court. Residents must use FAA Part 150 studies or airport proprietor complaint channels.

Frequently Asked Questions

Can an Illinois city ban overnight flights at O'Hare or Midway?

No. Federal law preempts municipal regulation of aircraft operations. Only the FAA, and in limited cases an airport proprietor with FAA approval, may impose curfews or noise restrictions.

Where do I report aircraft noise in Illinois?

File complaints with the FAA Noise Portal and the operating airport. Chicago Department of Aviation runs hotlines and the O'Hare Noise Compatibility Commission for ORD. Local police cannot cite aircraft.

Illinois Aircraft Noise Preempted by Federal Law

Key Facts

Full Breakdown

Violations & Penalties

Frequently Asked Questions

Sources

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