| ID | | City | | Name |
|---|
| C00 | | Aledo | | Mercer County Airport |
| KALN | | Alton/St Louis | | St Louis Regional Airport |
| K06 | | Beardstown | | Greater Beardstown Airport |
| KBLV | | Belleville | | Scott Air Force Base/MidAmerica Airport |
| H96 | | Benton | | Benton Municipal Airport |
| KBMI | | Bloomington/Normal | | Central Illinois Regional Airport/Bloomington-Normal |
| 1C5 | | Bolingbrook | | Bolingbrook's Clow International Airport |
| KCPS | | Cahokia/St Louis | | St Louis Downtown Airport |
| KCIR | | Cairo | | Cairo Regional Airport |
| KCTK | | Canton | | Ingersoll Airport |
| KMDH | | Carbondale/Murphysboro | | Southern Illinois Airport |
| KCUL | | Carmi | | Carmi Municipal Airport |
| 1H8 | | Casey | | Casey Municipal Airport |
| KENL | | Centralia | | Centralia Municipal Airport |
| KCMI | | Champaign/Urbana | | University of Illinois/Willard Airport |
| KORD | | Chicago | | Chicago O'Hare International Airport |
| KMDW | | Chicago | | Chicago Midway International Airport |
| KIGQ | | Chicago | | Lansing Municipal Airport |
| KARR | | Chicago/Aurora | | Aurora Municipal Airport |
| 3CK | | Chicago/Lake In The Hills | | Lake in the Hills Airport |
| KPWK | | Chicago/Prospect Heights/Wheeling | | Chicago Executive Airport |
| KRFD | | Chicago/Rockford | | Chicago/Rockford International Airport |
| KLOT | | Chicago/Romeoville | | Lewis University Airport |
| 06C | | Chicago/Schaumburg | | Schaumburg Regional Airport |
| KUGN | | Chicago/Waukegan | | Waukegan National Airport |
| KDPA | | Chicago/West Chicago | | DuPage Airport |
| C82 | | Compton | | Bresson Airport |
| KDNV | | Danville | | Vermilion Regional Airport |
| KDKB | | De Kalb | | De Kalb Taylor Municipal Airport |
| KDEC | | Decatur | | Decatur Airport |
| C73 | | Dixon | | Dixon Municipal Airport-Charles R. Walgreen Field |
| KDTG | | Dwight | | Dwight Airport |
| 1H2 | | Effingham | | Effingham County Regional Airport |
| KFWC | | Fairfield | | Fairfield Municipal Airport |
| KFOA | | Flora | | Flora Municipal Airport |
| KFEP | | Freeport | | Albertus Airport |
| KGBG | | Galesburg | | Galesburg Municipal Airport |
| 3G8 | | Geneseo | | Gen-Airpark Airport |
| C81 | | Grayslake | | Campbell Airport |
| KGRE | | Greenville | | Greenville Airport |
| 10C | | Greenwood/Wonder Lake | | Galt Field Airport |
| KHSB | | Harrisburg | | Harrisburg-Raleigh Airport |
| 0C0 | | Harvard | | Dacy Airport |
| 9I0 | | Havana | | Havana Regional Airport |
| H07 | | Highland | | Highland-Winet Airport |
| 0C2 | | Hinckley | | Hinckley Airport |
| KIJX | | Jacksonville | | Jacksonville Municipal Airport |
| KJOT | | Joliet | | Joliet Regional Airport |
| KIKK | | Kankakee | | Greater Kankakee Airport |
| 3KK | | Kankakee | | Kankakee Airport |
| KEZI | | Kewanee | | Kewanee Municipal Airport |
| C75 | | Lacon | | Marshall County Airport |
| KLWV | | Lawrenceville | | Lawrenceville-Vincennes International Airport |
| KAAA | | Lincoln | | Logan County Airport |
| 3LF | | Litchfield | | Litchfield Municipal Airport |
| KMQB | | Macomb | | Macomb Municipal Airport |
| KMWA | | Marion | | Veterans Airport of Southern Illinois |
| KMTO | | Mattoon/Charleston | | Coles County Memorial Airport |
| M30 | | Metropolis | | Metropolis Municipal Airport |
| KMLI | | Moline | | Quad Cities International Airport |
| C56 | | Monee | | Bult Field Airport |
| C66 | | Monmouth | | Monmouth Municipal Airport |
| C09 | | Morris | | Morris Municipal Airport/James R Washburn Field |
| KAJG | | Mount Carmel | | Mount Carmel Municipal Airport |
| C55 | | Mount Morris | | Ogle County Airport |
| I63 | | Mount Sterling | | Mount Sterling Municipal Airport |
| KMVN | | Mount Vernon | | Mount Vernon Airport |
| 0C8 | | Newark | | Cushing Field Ltd Airport |
| KOLY | | Olney-Noble | | Olney-Noble Airport |
| 8N2 | | Ottawa | | Skydive Chicago Airport |
| 5K1 | | Palmyra | | Zelmer Memorial Airpark Inc |
| KPRG | | Paris | | Edgar County Airport |
| 1C1 | | Paxton | | Paxton Airport |
| C15 | | Pekin | | Pekin Municipal Airport |
| KPIA | | Peoria | | General Downing - Peoria International Airport |
| 3MY | | Peoria | | Mount Hawley Auxiliary Airport |
| KVYS | | Peru | | Illinois Valley Regional Airport-Walter A Duncan Field |
| KPJY | | Pinckneyville | | Pinckneyville/Du Quoin Airport |
| KPPQ | | Pittsfield | | Pittsfield Penstone Municipal Airport |
| KPNT | | Pontiac | | Pontiac Municipal Airport |
| C77 | | Poplar Grove | | Poplar Grove Airport |
| KUIN | | Quincy | | Quincy Regional Airport-Baldwin Field |
| KTIP | | Rantoul | | Rantoul National Aviation Center Airport-Frank Elliott Field |
| KRSV | | Robinson | | Crawford County Airport |
| KRPJ | | Rochelle | | Rochelle Municipal Airport/Koritz Field |
| 1C8 | | Rockford | | Cottonwood Airport |
| 5K4 | | Rushville | | Schuy-Rush Airport |
| KSLO | | Salem | | Salem-Leckrone Airport |
| KSFY | | Savanna | | Tri-Township Airport |
| 2H0 | | Shelbyville | | Shelby County Airport |
| KSAR | | Sparta | | Sparta Community Airport-Hunter Field |
| KSPI | | Springfield | | Abraham Lincoln Capital Airport |
| KSQI | | Sterling/Rockfalls | | Whiteside County Airport/Jos H Bittorf Field |
| KTAZ | | Taylorville | | Taylorville Municipal Airport |
| K96 | | Tuscola | | Tuscola Airport |
| C16 | | Urbana | | Frasca Field Airport |
| KVLA | | Vandalia | | Vandalia Municipal Airport |
| 2T2 | | Watson | | Percival Springs Airport |
| 2C6 | | Yates City | | Tri-County Airport |
