| ICAO code | KZAU |
| Country | United States |
| Type | Flight Information Region |
| Center | 42.11215, -89.14165 |
| Airports | 1,409 |
| NOTAM | Chicago FIR NOTAMs |
| METARs | 119 |
| SIGMETs | 0 |
| Size | 255,822 km2 |
| Adjacent |
| ID | Name | IATA | METAR | City | Region | Type |
|---|---|---|---|---|---|---|
| 13IL | Midwest Medical Center Heliport | Galena | Illinois | Heliport | ||
| IL89 | OSF St. Mary Medical Center-Galesburg Heliport | Galesburg | Illinois | Heliport | ||
| 9IS7 | Black Hawk Heliport | Geneseo | Illinois | Heliport | ||
| 3LL2 | Hammond-Henry Hospital Heliport | Geneseo | Illinois | Heliport | ||
| 30IS | Aero Lake Estates Airport | Genoa | Illinois | Small airport | ||
| IL60 | Idlas Airport | Genoa | Illinois | Small airport | ||
| 9IS8 | Gibson Area Hospital Heliport | Gibson City | Illinois | Heliport | ||
| 9IS2 | Schertz Field | Gibson City | Illinois | Small airport | ||
| 7IS5 | Koppie Airport | Gilberts | Illinois | Small airport | ||
| IS09 | Adventist Glenoaks Medical Center Heliport | Glendale Heights | Illinois | Heliport | ||
| IL35 | Earlybird Heliport | Goodfield | Illinois | Heliport | ||
| 7IL0 | Mussman Airport | Grant Park | Illinois | Small airport | ||
| LL14 | NW Lake Forest Hospital-Grayslake Heliport | Grayslake | Illinois | Heliport | ||
| 3IL8 | Kuntz Airport | Gridley | Illinois | Small airport | ||
| IL90 | Nordic Heliport | Gurnee | Illinois | Heliport | ||
| 68IS | Casa De Aero Park Airport | Hampshire | Illinois | Small airport | ||
| 7IL7 | Edward Getzelman Airport | Hampshire | Illinois | Small airport | ||
| 3IS4 | Merkle Airport | Hanover | Iowa | Small airport | ||
| 7IL8 | Cody Port Airport | Harding | Illinois | Small airport | ||
| 8IL0 | Adkins Airport | Harvard | Illinois | Small airport | ||
| 8IL2 | Kirkpatrick Airport | Harvard | Wisconsin | Small airport | ||
| 8IL4 | Mercy Harvard Hospital Heliport | Harvard | Illinois | Heliport | ||
| IL92 | Uchicago Medicine Ingalls Memorial Heliport | Harvey | Illinois | Heliport | ||
| IS17 | Harvey Police Department Heliport | Harvey | Illinois | Heliport | ||
| 31IS | Mason District Hospital Heliport | Havana | Illinois | Heliport | ||
| 8IL8 | Advocate South Suburban Hospital Heliport | Hazel Crest | Illinois | Heliport | ||
| 8IL9 | Little Sister Seaplane Base | Hennepin | Illinois | Seaplane base | ||
| 9IL0 | Villiger Airport | Henry | Illinois | Small airport | ||
| 9IS9 | Johnston Airport | Heyworth | Illinois | Small airport | ||
| 9IL5 | City Of Highland Park Heliport | Highland Park | Illinois | Heliport | ||
| 9IL7 | Black Airport | Hillsdale | Illinois | Small airport | ||
| 1IL2 | Adventist Hinsdale Hospital Heliport | Hinsdale | Illinois | Heliport | ||
| IL03 | St. Alexius Medical Center Heliport | Hoffman Estates | Illinois | Heliport | ||
| 01IL | Hoopeston Community Memorial Hospital Heliport | Hoopeston | Illinois | Heliport | ||
| IL06 | Hopedale Medical Complex Heliport | Hopedale | Illinois | Heliport | ||
| 04IL | Schertz Aerial Service-Hudson Airport | Hudson | Illinois | Small airport | ||
| 6IL2 | Phyllis Field | Huntley | Illinois | Small airport | ||
| 82IS | Landings Condominium Airport | Huntley | Illinois | Small airport | ||
| 2IS4 | Ritter Field | Illinois City | Iowa | Small airport | ||
| IL98 | Chicagoland Speedway Heliport | Joliet | Illinois | Heliport | ||
| IL85 | Oakfield | Kaneville | Illinois | Small airport | ||
| 10IL | Riverside Medical Center Heliport | Kankakee | Illinois | Heliport | ||
| IL78 | Benoit Airport | Kankakee | Illinois | Small airport | ||
| 11IL | Presence St. Mary's Hospital-Kankakee Heliport | Kankakee | Illinois | Heliport | ||
| 12IL | Hawker Airport | Kankakee | Illinois | Small airport | ||
| 0IL5 | OSF St. Luke Medical Center Heliport | Kewanee | Illinois | Heliport | ||
| 00IS | Hayenga's Cant Find Farms Airport | Kings | Illinois | Small airport | ||
| 16IL | Harold Bunger Airport | Kirkland | Illinois | Small airport | ||
| IS59 | Rotstein Airport | Kirkland | Illinois | Small airport | ||
| 6IL6 | Kingfield | Knoxville | Illinois | Small airport |