About CDA

Two World Class Airports

The Chicago Department of Aviation (CDA) administers all aspects of Chicago's two major airports – O'Hare and Midway International Airports. In addition to managing world class airports in Chicago, CDA is one of the regional leaders in business, employment and sustainability. The CDA has made a commitment to the Chicago area community to be a steward to residents, visitors and the environment.

The CDA's central purpose is to:

  • Ensure safe and efficient travel through O'Hare and Midway International Airports
  • Successfully implement the O'Hare Modernization Program (OMP)
  • Enhance economic activity and job creation of O'Hare and Midway International Airports
  • Manage airport tenant and concessions license agreements; ground transportation facilities; financial administration; research, planning and development activities
  • Integrate airport-specific, sustainable planning and practices in design, construction, operations, maintenance and daily airport functions

Airport Competition Plans

Midway International Airport
O'Hare International Airport (Coming Soon)

Facts and figures for O'Hare International Airport and Midway International Airport can be viewed by clicking the appropriate link.

Vital Economic Role

The CDA is self-supporting, using no local or state tax dollars for operations or capital improvements at O'Hare and Midway. Together, Chicago's airports generate more than $45 billion in annual economic activity and create 540,000 jobs for the region.

Click here to find current contracting opportunities at the airports and here to find information about employers at the airports.

O'Hare Modernization Program

The CDA is committed to continually improving and enhancing Chicago's airports and is responsible for the management of the O'Hare Modernization Program (OMP). The OMP is a delay reduction/capacity enhancement program changing O'Hare's intersecting runway system into a parallel runway configuration, which will usher O'Hare into the 21st century as a world-wide technology and sustainable airports leader.

We invite you to find out more about the O'Hare Modernization Program.

Commitment to Sustainability and the Environment

The CDA continues to serve as an industry leader for environmental stewardship by embracing environmentally, socially, and economically responsible practices.

Learn more about our Sustainable Initiatives at O'Hare and Midway.


Noise Management

The CDA strives to maintain an excellent relationship with the communities surrounding the airport and has a pro-active Airport Noise Management program at both O'Hare and Midway.

CDA Leadership Team

Click here to meet the Chicago Department of Aviation Leadership Team.

Chicago Department of Aviation Travel Log

Click here​ to view the CDA Travel Log


Chicago Department of Aviation Logo

The CDA can be contacted by dialing Customer Service at 800.832.6352 or via mail at:

Chicago Department of Aviation (CDA)
Customer Service
P.O. Box 66142
Chicago, IL 60666​​