| Antrim County (ACB) | Bellaire | MI | Gary Chicago International to Antrim County |
| Lenawee County (ADG) | Adrian | MI | Gary Chicago International to Lenawee County |
| Albert Lea Municipal (AEL) | Albert Lea | MN | Gary Chicago International to Albert Lea Municipal |
| Allegheny County (AGC) | Pittsburgh | PA | Gary Chicago International to Allegheny County |
| Amery Municipal (AHH) | Amery | WI | Gary Chicago International to Amery Municipal |
| Anderson Municipal-Darlington Field (AID) | Anderson | IN | Gary Chicago International to Anderson Municipal-Darlington Field |
| Atlantic Municipal (AIO) | Atlantic | IA | Gary Chicago International to Atlantic Municipal |
| Lee C Fine Memorial (AIZ) | KAISER/LAKE OZARK | MO | Gary Chicago International to Lee C Fine Memorial |
| Akron Fulton International (AKC) | Akron | OH | Gary Chicago International to Akron Fulton International |
| St Louis Regional (ALN) | Alton | IL | Gary Chicago International to St Louis Regional |
| Waterloo Regional (ALO) | Waterloo | IA | Gary Chicago International to Waterloo Regional |
| Gratiot Community (AMN) | Alma | MI | Gary Chicago International to Gratiot Community |
| Ames Municipal (AMW) | Ames | IA | Gary Chicago International to Ames Municipal |
| Tri-State Steuben County (ANQ) | Angola | IN | Gary Chicago International to Tri-State Steuben County |
| Lima Allen County (AOH) | Lima | OH | Gary Chicago International to Lima Allen County |
| Alpena County Regional (APN) | Alpena | MI | Gary Chicago International to Alpena County Regional |
| Ann Arbor Municipal (ARB) | Ann Arbor | MI | Gary Chicago International to Ann Arbor Municipal |
| Lakeland/Noble F. Lee Memorial Field (ARV) | Minocqua | WI | Gary Chicago International to Lakeland/Noble F. Lee Memorial Field |
| John F Kennedy Memorial (ASX) | Ashland | WI | Gary Chicago International to John F Kennedy Memorial |
| Gordon K Bush Ohio University (ATO) | Athens/Albany | OH | Gary Chicago International to Gordon K Bush Ohio University |
| Appleton International (ATW) | Appleton | WI | Gary Chicago International to Appleton International |
| Austin Municipal (AUM) | Austin | MN | Gary Chicago International to Austin Municipal |
| Wausau Downtown (AUW) | Wausau | WI | Gary Chicago International to Wausau Downtown |
| Chicago/Aurora Municipal (AUZ) | Chicago | IL | Gary Chicago International to Chicago/Aurora Municipal |
| Algona Municipal (AXG) | Algona | IA | Gary Chicago International to Algona Municipal |
| Auglaize County Neil Armstrong (AXV) | Wapakoneta | OH | Gary Chicago International to Auglaize County Neil Armstrong |
| Kalamazoo/Battle Creek International (AZO) | Kalamazoo | MI | Gary Chicago International to Kalamazoo/Battle Creek International |
| Southwest Michigan Regional (BEH) | Benton Harbor | MI | Gary Chicago International to Southwest Michigan Regional |
| Beaver County (BFP) | Beaver Falls | PA | Gary Chicago International to Beaver County |
| Virgil I Grissom Municipal (BFR) | Bedford | IN | Gary Chicago International to Virgil I Grissom Municipal |
| Wayne County (BJJ) | Wooster | OH | Gary Chicago International to Wayne County |
| Burke Lakefront (BKL) | Cleveland | OH | Gary Chicago International to Burke Lakefront |
| MidAmerica St Louis Scott AFB (BLV) | Belleville | IL | Gary Chicago International to MidAmerica St Louis Scott AFB |
| Monroe County (BMG) | Bloomington | IN | Gary Chicago International to Monroe County |
| Central Illinois Regional at Bloomington Normal (BMI) | Bloomington | IL | Gary Chicago International to Central Illinois Regional at Bloomington Normal |
| Nashville International (BNA) | Nashville | TN | Gary Chicago International to Nashville International |
| Boone Municipal (BNW) | Boone | IA | Gary Chicago International to Boone Municipal |
| Southeast Iowa Regional (BRL) | Burlington | IA | Gary Chicago International to Southeast Iowa Regional |
| Samuels Field (BRY) | Bardstown | KY | Gary Chicago International to Samuels Field |
| W K Kellogg Regional (BTL) | Battle Creek | MI | Gary Chicago International to W K Kellogg Regional |
| Butler County/K W Scholter Field (BTP) | Butler | PA | Gary Chicago International to Butler County/K W Scholter Field |
| Bowling Green Warren County Regional (BWG) | Bowling Green | KY | Gary Chicago International to Bowling Green Warren County Regional |
| Wexford County (CAD) | Cadillac | MI | Gary Chicago International to Wexford County |
| Akron/Canton Regional (CAK) | Akron | OH | Gary Chicago International to Akron/Canton Regional |
| Northeast Iowa Regional (CCY) | Charles City | IA | Gary Chicago International to Northeast Iowa Regional |
| Mettel Field (CEV) | Connersville | IN | Gary Chicago International to Mettel Field |
| Kyle-Oakley Field (CEY) | Murray | KY | Gary Chicago International to Kyle-Oakley Field |
| Cuyahoga County (CGF) | Cleveland | OH | Gary Chicago International to Cuyahoga County |
| Cape Girardeau Regional (CGI) | Cape Girardeau | MO | Gary Chicago International to Cape Girardeau Regional |
| The Eastern Iowa (CID) | Cedar Rapids | IA | Gary Chicago International to The Eastern Iowa |
| Arthur N Neu (CIN) | Carroll | IA | Gary Chicago International to Arthur N Neu |
| Cairo Regional (CIR) | Cairo | IL | Gary Chicago International to Cairo Regional |
| Chippewa County International (CIU) | Sault Ste Marie | MI | Gary Chicago International to Chippewa County International |
| Outlaw Field (CKV) | Clarksville | TN | Gary Chicago International to Outlaw Field |
| Cleveland/Hopkins International (CLE) | Cleveland | OH | Gary Chicago International to Cleveland/Hopkins International |
| Clintonville Municipal (CLI) | Clintonville | WI | Gary Chicago International to Clintonville Municipal |
| Columbus Municipal (CLU) | Columbus | IN | Gary Chicago International to Columbus Municipal |
| John Glenn International (CMH) | Columbus | OH | Gary Chicago International to John Glenn International |
| University of Illinois-Willard (CMI) | Champaign/Urbana | IL | Gary Chicago International to University of Illinois-Willard |
| Houghton County Memorial (CMX) | Hancock | MI | Gary Chicago International to Houghton County Memorial |
| Sparta/Fort Mccoy (CMY) | Sparta | WI | Gary Chicago International to Sparta/Fort Mccoy |
| Columbia Regional (COU) | Columbia | MO | Gary Chicago International to Columbia Regional |
| St Louis Downtown (CPS) | Cahokia/St Louis | IL | Gary Chicago International to St Louis Downtown |
| Yeager (CRW) | Charleston | WV | Gary Chicago International to Yeager |
| Creston Municipal (CSQ) | Creston | IA | Gary Chicago International to Creston Municipal |
| Cincinnati Northern Kentucky International (CVG) | Cincinnati | OH | Gary Chicago International to Cincinnati Northern Kentucky International |
| Central Wisconsin (CWA) | Mosinee | WI | Gary Chicago International to Central Wisconsin |
| Clinton Municipal (CWI) | Clinton | IA | Gary Chicago International to Clinton Municipal |
| Burlington Executive (CZB) | Burlington | ON | Gary Chicago International to Burlington Executive |
| Dayton International James M Cox (DAY) | Dayton | OH | Gary Chicago International to Dayton International James M Cox |
| Dubuque Regional (DBQ) | Dubuque | IA | Gary Chicago International to Dubuque Regional |
| Decatur (DEC) | Decatur | IL | Gary Chicago International to Decatur |
| Decorah Municipal (DEH) | Decorah | IA | Gary Chicago International to Decorah Municipal |
| Coleman A Young Municipal (DET) | Detroit | MI | Gary Chicago International to Coleman A Young Municipal |
| Defiance Memorial (DFI) | Defiance | OH | Gary Chicago International to Defiance Memorial |
| Sedalia Regional (DMO) | Sedalia | MO | Gary Chicago International to Sedalia Regional |
| Vermilion Regional (DNV) | Danville | IL | Gary Chicago International to Vermilion Regional |
| Dupage (DPA) | Chicago | IL | Gary Chicago International to Dupage |
| Drummond Island (DRE) | Drummond Island | MI | Gary Chicago International to Drummond Island |
| Des Moines International (DSM) | Des Moines | IA | Gary Chicago International to Des Moines International |
| Detroit Metro Wayne County (DTW) | Detroit | MI | Gary Chicago International to Detroit Metro Wayne County |
| Davenport Municipal (DVN) | Davenport | IA | Gary Chicago International to Davenport Municipal |
| Chippewa Valley Regional (EAU) | Eau Claire | WI | Gary Chicago International to Chippewa Valley Regional |
| Webster City Municipal (EBS) | Webster City | IA | Gary Chicago International to Webster City Municipal |
| Iosco County (ECA) | East Tawas | MI | Gary Chicago International to Iosco County |
| Jefferson Municipal (EFW) | Jefferson | IA | Gary Chicago International to Jefferson Municipal |
| Eagle River Union (EGV) | Eagle River | WI | Gary Chicago International to Eagle River Union |
| Elkhart Municipal (EKI) | Elkhart | IN | Gary Chicago International to Elkhart Municipal |
| Addington Field (EKX) | Elizabethtown | KY | Gary Chicago International to Addington Field |
| Centralia Municipal (ENL) | Centralia | IL | Gary Chicago International to Centralia Municipal |
| Kenosha Regional (ENW) | Kenosha | WI | Gary Chicago International to Kenosha Regional |
| Keokuk Municipal (EOK) | Keokuk | IA | Gary Chicago International to Keokuk Municipal |
| Erie International/Tom Ridge Field (ERI) | Erie | PA | Gary Chicago International to Erie International/Tom Ridge Field |
| Delta County (ESC) | Escanaba | MI | Gary Chicago International to Delta County |
| Estherville Municipal (EST) | Estherville | IA | Gary Chicago International to Estherville Municipal |
| West Bend Municipal (ETB) | West Bend | WI | Gary Chicago International to West Bend Municipal |
| Evansville Regional (EVV) | Evansville | IN | Gary Chicago International to Evansville Regional |
| Farmington Regional (FAM) | Farmington | MO | Gary Chicago International to Farmington Regional |
| Faribault Municipal (FBL) | Faribault | MN | Gary Chicago International to Faribault Municipal |
| Flying Cloud (FCM) | Minneapolis | MN | Gary Chicago International to Flying Cloud |
| Findlay (FDY) | Findlay | OH | Gary Chicago International to Findlay |
| Albertus (FEP) | Freeport | IL | Gary Chicago International to Albertus |
| Fairfield Municipal (FFL) | Fairfield | IA | Gary Chicago International to Fairfield Municipal |
| Capital City (FFT) | Frankfort | KY | Gary Chicago International to Capital City |
| Venango Regional (FKL) | Franklin | PA | Gary Chicago International to Venango Regional |
| Fond Du Lac County (FLD) | Fond Du Lac | WI | Gary Chicago International to Fond Du Lac County |
| Fort Madison Municipal (FMS) | Fort Madison | IA | Gary Chicago International to Fort Madison Municipal |
| Bishop International (FNT) | Flint | MI | Gary Chicago International to Bishop International |
| Fort Dodge Regional (FOD) | Fort Dodge | IA | Gary Chicago International to Fort Dodge Regional |
| French Lick Municipal (FRH) | French Lick | IN | Gary Chicago International to French Lick Municipal |
| Fairmont Municipal (FRM) | Fairmont | MN | Gary Chicago International to Fairmont Municipal |
| Fort Wayne International (FWA) | Fort Wayne | IN | Gary Chicago International to Fort Wayne International |
| Forest City Municipal (FXY) | Forest City | IA | Gary Chicago International to Forest City Municipal |
| Galesburg Municipal (GBG) | Galesburg | IL | Gary Chicago International to Galesburg Municipal |
| Gladwin Zettel Memorial (GDW) | Gladwin | MI | Gary Chicago International to Gladwin Zettel Memorial |
| Centerville Municipal (GHM) | Centerville | TN | Gary Chicago International to Centerville Municipal |
| Gaylord Regional (GLR) | Gaylord | MI | Gary Chicago International to Gaylord Regional |
| Glasgow Municipal (GLW) | Glasgow | KY | Gary Chicago International to Glasgow Municipal |
| Galion Municipal (GQQ) | Galion | OH | Gary Chicago International to Galion Municipal |
| Austin Straubel International (GRB) | Green Bay | WI | Gary Chicago International to Austin Straubel International |
| Greenville (GRE) | Greenville | IL | Gary Chicago International to Greenville |
| Gerald R Ford International (GRR) | Grand Rapids | MI | Gary Chicago International to Gerald R Ford International |
| Goshen Municipal (GSH) | Goshen | IN | Gary Chicago International to Goshen Municipal |
| Grantsburg Muni (GTG) | Grantsburg | WI | Gary Chicago International to Grantsburg Muni |
| Grissom Aeroplex/Arb (GUS) | Peru | IN | Gary Chicago International to Grissom Aeroplex/Arb |
| Three Rivers Municipal Dr Haines (HAI) | Three Rivers | MI | Gary Chicago International to Three Rivers Municipal Dr Haines |
| Butler County Regional-Hogan Field (HAO) | Hamilton | OH | Gary Chicago International to Butler County Regional-Hogan Field |
| Wheeling Ohio County (HLG) | Wheeling | WV | Gary Chicago International to Wheeling Ohio County |
| Park Township (HLM) | Holland | MI | Gary Chicago International to Park Township |
| Huntingburg (HNB) | Huntingburg | IN | Gary Chicago International to Huntingburg |
| Hampton Municipal (HPT) | Hampton | IA | Gary Chicago International to Hampton Municipal |
| Harrisburg-Raleigh (HSB) | Harrisburg | IL | Gary Chicago International to Harrisburg-Raleigh |
| Roscommon County - Blodgett Memorial (HTL) | Houghton Lake | MI | Gary Chicago International to Roscommon County - Blodgett Memorial |
| Tri-State Milton J Ferguson Field (HTS) | Huntington | WV | Gary Chicago International to Tri-State Milton J Ferguson Field |
| Lawrence County Airpark (HTW) | Chesapeake | OH | Gary Chicago International to Lawrence County Airpark |
| Humboldt Municipal (HUD) | Humboldt | IA | Gary Chicago International to Humboldt Municipal |
| Terre Haute Regional/Hulman Field (HUF) | Terre Haute | IN | Gary Chicago International to Terre Haute Regional/Hulman Field |
| Sawyer County (HYR) | Hayward | WI | Gary Chicago International to Sawyer County |
| Schenck Field (ICL) | Clarinda | IA | Gary Chicago International to Schenck Field |
| Iowa Falls Municipal (IFA) | Iowa Falls | IA | Gary Chicago International to Iowa Falls Municipal |
| Jacksonville Municipal (IJX) | Jacksonville | IL | Gary Chicago International to Jacksonville Municipal |
| Greater Kankakee (IKK) | Kankakee | IL | Gary Chicago International to Greater Kankakee |
| Wilmington Airpark (ILN) | Wilmington | OH | Gary Chicago International to Wilmington Airpark |
| Ford (IMT) | Iron Mountain | MI | Gary Chicago International to Ford |
| Indianapolis International (IND) | Indianapolis | IN | Gary Chicago International to Indianapolis International |
| Iowa City Municipal (IOW) | Iowa City | IA | Gary Chicago International to Iowa City Municipal |
| Kirksville Regional (IRK) | Kirksville | MO | Gary Chicago International to Kirksville Regional |
| Kirsch Municipal (IRS) | Sturgis | MI | Gary Chicago International to Kirsch Municipal |
| Schoolcraft County (ISQ) | Manistique | MI | Gary Chicago International to Schoolcraft County |
| Alexander Field South Wood County (ISW) | Wisconsin Rapids | WI | Gary Chicago International to Alexander Field South Wood County |
| Gogebic-Iron County (IWD) | Ironwood | MI | Gary Chicago International to Gogebic-Iron County |
| Jefferson City Memorial (JEF) | Jefferson City | MO | Gary Chicago International to Jefferson City Memorial |
| Northeast Ohio Regional (JFN) | Ashtabula | OH | Gary Chicago International to Northeast Ohio Regional |
| Souther Wisconsin Regional (JVL) | Janesville | WI | Gary Chicago International to Souther Wisconsin Regional |
| Jackson County/Reynolds Field (JXN) | Jackson | MI | Gary Chicago International to Jackson County/Reynolds Field |
| Kentland Municipal (KKT) | Kentland | IN | Gary Chicago International to Kentland Municipal |
| Kennett Memorial (KNT) | Kennett | MO | Gary Chicago International to Kennett Memorial |
| Purdue University (LAF) | Lafayette | IN | Gary Chicago International to Purdue University |
| Capital Region International (LAN) | Lansing | MI | Gary Chicago International to Capital Region International |
| Rickenbacker International (LCK) | Columbus | OH | Gary Chicago International to Rickenbacker International |
| Mason County (LDM) | Ludington | MI | Gary Chicago International to Mason County |
| Blue Grass (LEX) | Lexington | KY | Gary Chicago International to Blue Grass |
| Willoughby Lost Nation Municipal (LNN) | Willoughby | OH | Gary Chicago International to Willoughby Lost Nation Municipal |
| Tri-County Regional (LNR) | Lone Rock | WI | Gary Chicago International to Tri-County Regional |
| Bowman Field (LOU) | Louisville | KY | Gary Chicago International to Bowman Field |
| London Corbin Magee Field (LOZ) | London | KY | Gary Chicago International to London Corbin Magee Field |
| La Crosse Regional (LSE) | La Crosse | WI | Gary Chicago International to La Crosse Regional |
| Cincinnati Municipal Lunken (LUK) | Cincinnati | OH | Gary Chicago International to Cincinnati Municipal Lunken |
| Lawrenceville-Vincennes International (LWV) | Lawrenceville | IL | Gary Chicago International to Lawrenceville-Vincennes International |
| Malden Regional (MAW) | Malden | MO | Gary Chicago International to Malden Regional |
| Manistee County-Blacker (MBL) | Manistee | MI | Gary Chicago International to Manistee County-Blacker |
| Mbs International (MBS) | Saginaw | MI | Gary Chicago International to Mbs International |
| Omar N Bradley (MBY) | Moberly | MO | Gary Chicago International to Omar N Bradley |
| Mackinac Island (MCD) | Mackinac Island | MI | Gary Chicago International to Mackinac Island |
| Mason City Municipal (MCW) | Mason City | IA | Gary Chicago International to Mason City Municipal |
| Taylor County (MDF) | Medford | WI | Gary Chicago International to Taylor County |
| Southern Illinois (MDH) | Carbondale/Murphysboro | IL | Gary Chicago International to Southern Illinois |
| Madison Municipal (MDN) | Madison | IN | Gary Chicago International to Madison Municipal |
| Port Meadville (MEJ) | Meadville | PA | Gary Chicago International to Port Meadville |
| Mansfield Lahm Regional (MFD) | Mansfield | OH | Gary Chicago International to Mansfield Lahm Regional |
| Marshfield Municipal (MFI) | Marshfield | WI | Gary Chicago International to Marshfield Municipal |
| Dayton-Wright Brothers (MGY) | Dayton | OH | Gary Chicago International to Dayton-Wright Brothers |
| Marshall Memorial Municipal (MHL) | Marshall | MO | Gary Chicago International to Marshall Memorial Municipal |
| Crystal (MIC) | Minneapolis | MN | Gary Chicago International to Crystal |
| Delaware County Regional (MIE) | Muncie | IN | Gary Chicago International to Delaware County Regional |
| Marshalltown Municipal (MIW) | Marshalltown | IA | Gary Chicago International to Marshalltown Municipal |
| Milwaukee General Mitchell International (MKE) | Milwaukee | WI | Gary Chicago International to Milwaukee General Mitchell International |
| Muskegon County (MKG) | Muskegon | MI | Gary Chicago International to Muskegon County |
| Mankato Regional (MKT) | Mankato | MN | Gary Chicago International to Mankato Regional |
| Quad City International (MLI) | Moline | IL | Gary Chicago International to Quad City International |
| Menominee-Marinette Twin County (MNM) | Menominee | MI | Gary Chicago International to Menominee-Marinette Twin County |
| Marion Municipal (MNN) | Marion | OH | Gary Chicago International to Marion Municipal |
| Mount Pleasant Municipal (MOP) | Mount Pleasant | MI | Gary Chicago International to Mount Pleasant Municipal |
| Mount Pleasant Municipal (MPZ) | Mount Pleasant | IA | Gary Chicago International to Mount Pleasant Municipal |
| Macomb Municipal (MQB) | Macomb | IL | Gary Chicago International to Macomb Municipal |
| Sawyer International (MQT) | Marquette | MI | Gary Chicago International to Sawyer International |
| Smyrna (MQY) | Smyrna | TN | Gary Chicago International to Smyrna |
| Truax Field/Dane County Regional (MSN) | Madison | WI | Gary Chicago International to Truax Field/Dane County Regional |
| Minneapolis St Paul International/Wold-Chamberlain (MSP) | Minneapolis | MN | Gary Chicago International to Minneapolis St Paul International/Wold-Chamberlain |
| Coles County Memorial (MTO) | Mattoon/Charleston | IL | Gary Chicago International to Coles County Memorial |
| Manitowoc County (MTW) | Manitowoc | WI | Gary Chicago International to Manitowoc County |
| Muscatine Municipal (MUT) | Muscatine | IA | Gary Chicago International to Muscatine Municipal |
| Mount Vernon (MVN) | Mount Vernon | IL | Gary Chicago International to Mount Vernon |
| Williamson County Rgnl (MWA) | Marion | IL | Gary Chicago International to Williamson County Rgnl |
| Lawrence J Timmerman (MWC) | Milwaukee | WI | Gary Chicago International to Lawrence J Timmerman |
| Middletown Regional - Hook Field (MWO) | Middletown | OH | Gary Chicago International to Middletown Regional - Hook Field |
| Monticello Regional (MXO) | Monticello | IA | Gary Chicago International to Monticello Regional |
| Marion Municipal (MZZ) | Marion | IN | Gary Chicago International to Marion Municipal |
| Jerry Tyler Memorial (NLE) | Niles | MI | Gary Chicago International to Jerry Tyler Memorial |
| Tobermory (NR4) | Tobermory | ON | Gary Chicago International to Tobermory |
| L O Simenstad Municipal (OEO) | Osceola | WI | Gary Chicago International to L O Simenstad Municipal |
| Kokomo Municipal (OKK) | Kokomo | IN | Gary Chicago International to Kokomo Municipal |
| Olney-Noble (OLY) | Olney-Noble | IL | Gary Chicago International to Olney-Noble |
| Winona Municipal-Max Conrad Field (ONA) | Winona | MN | Gary Chicago International to Winona Municipal-Max Conrad Field |
| Oskaloosa Municipal (OOA) | Oskaloosa | IA | Gary Chicago International to Oskaloosa Municipal |
| Grand Glaize Osage Beach (OSB) | Osage Beach | MO | Gary Chicago International to Grand Glaize Osage Beach |
| Oscoda-Wurtsmith (OSC) | Oscoda | MI | Gary Chicago International to Oscoda-Wurtsmith |
| Wittman Regional (OSH) | Oshkosh | WI | Gary Chicago International to Wittman Regional |
| Ohio State University (OSU) | Columbus | OH | Gary Chicago International to Ohio State University |
| Ottumwa Regional (OTM) | Ottumwa | IA | Gary Chicago International to Ottumwa Regional |
| Owatonna Degner Regional (OWA) | Owatonna | MN | Gary Chicago International to Owatonna Degner Regional |
| Owensboro-Daviess County Regional (OWB) | Owensboro | KY | Gary Chicago International to Owensboro-Daviess County Regional |
| Miami University (OXD) | Oxford | OH | Gary Chicago International to Miami University |
| Barkley Regional (PAH) | Paducah | KY | Gary Chicago International to Barkley Regional |
| Prairie Du Chien Municipal (PCD) | Prairie Duchien | WI | Gary Chicago International to Prairie Du Chien Municipal |
| Cambridge/Reid's Field (PE4) | Cambridge | ON | Gary Chicago International to Cambridge/Reid's Field |
| Harry Clever Field (PHD) | New Philadelphia | OH | Gary Chicago International to Harry Clever Field |
| St Clair County International (PHN) | Port Huron | MI | Gary Chicago International to St Clair County International |
| Henry County (PHT) | Paris | TN | Gary Chicago International to Henry County |
| Gen Wayne A Downing Peoria International (PIA) | Peoria | IL | Gary Chicago International to Gen Wayne A Downing Peoria International |
| Pittsburgh International (PIT) | Pittsburgh | PA | Gary Chicago International to Pittsburgh International |
| Mid Ohio Valley Regional (PKB) | Parkersburg | WV | Gary Chicago International to Mid Ohio Valley Regional |
| Park Falls Municipal (PKF) | Park Falls | WI | Gary Chicago International to Park Falls Municipal |
| Pellston Regional of Emmet County (PLN) | Pellston | MI | Gary Chicago International to Pellston Regional of Emmet County |
| Plymouth Municipal (PLY) | Plymouth | IN | Gary Chicago International to Plymouth Municipal |
| Greater Portsmouth Regional (PMH) | Portsmouth | OH | Gary Chicago International to Greater Portsmouth Regional |
| Poplar Bluff Municipal (POF) | Poplar Bluff | MO | Gary Chicago International to Poplar Bluff Municipal |
| Pocahontas Municipal (POH) | Pocahontas | IA | Gary Chicago International to Pocahontas Municipal |
| Wingham/Richard W Levan (PR7) | Wingham | ON | Gary Chicago International to Wingham/Richard W Levan |
| Perry Municipal (PRO) | Perry | IA | Gary Chicago International to Perry Municipal |
| Prentice Municipal (PRW) | Prentice | WI | Gary Chicago International to Prentice Municipal |
| Oakland County International (PTK) | Pontiac | MI | Gary Chicago International to Oakland County International |
| Chicago Executive (PWK) | Chicago | IL | Gary Chicago International to Chicago Executive |
| Batten International (RAC) | Racine | WI | Gary Chicago International to Batten International |
| Fulton County (RCR) | Rochester | IN | Gary Chicago International to Fulton County |
| Nartron Field (RCT) | Reed City | MI | Gary Chicago International to Nartron Field |
| Chicago/Rockford International (RFD) | Rockford | IL | Gary Chicago International to Chicago/Rockford International |
| Rhinelander Oneida County (RHI) | Rhinelander | WI | Gary Chicago International to Rhinelander Oneida County |
| Richmond Municipal (RID) | Richmond | IN | Gary Chicago International to Richmond Municipal |
| Rice Lake Regional - Carl's Field (RIE) | Rice Lake | WI | Gary Chicago International to Rice Lake Regional - Carl's Field |
| Rolla Downtown (RLA) | Rolla | MO | Gary Chicago International to Rolla Downtown |
| New Richmond Regional (RNH) | New Richmond | WI | Gary Chicago International to New Richmond Regional |
| Jasper County (RNZ) | Rensselaer | IN | Gary Chicago International to Jasper County |
| Merrill Municipal (RRL) | Merrill | WI | Gary Chicago International to Merrill Municipal |
| Rochester International (RST) | Rochester | MN | Gary Chicago International to Rochester International |
| Sparta Community - Hunter Field (SAR) | Sparta | IL | Gary Chicago International to Sparta Community - Hunter Field |
| Sheboygan County Memorial (SBM) | Sheboygan | WI | Gary Chicago International to Sheboygan County Memorial |
| South Bend International (SBN) | South Bend | IN | Gary Chicago International to South Bend International |
| Louisville International/Standiford Field (SDF) | Louisville | KY | Gary Chicago International to Louisville International/Standiford Field |
| Freeman Municipal (SER) | Seymour | IN | Gary Chicago International to Freeman Municipal |
| Springfield/Beckley Municipal (SGH) | Springfield | OH | Gary Chicago International to Springfield/Beckley Municipal |
| Sikeston Memorial Municipal (SIK) | Sikeston | MO | Gary Chicago International to Sikeston Memorial Municipal |
| Sullivan County (SIV) | Sullivan | IN | Gary Chicago International to Sullivan County |
| Salem-Leckrone (SLO) | Salem | IL | Gary Chicago International to Salem-Leckrone |
| Smith Field (SMD) | Fort Wayne | IN | Gary Chicago International to Smith Field |
| Lake Cumberland Regional (SME) | Somerset | KY | Gary Chicago International to Lake Cumberland Regional |
| Abraham Lincoln Capital (SPI) | Springfield | IL | Gary Chicago International to Abraham Lincoln Capital |
| Whiteside Co-Jos H Bittorf Field (SQI) | Sterling/Rock Falls | IL | Gary Chicago International to Whiteside Co-Jos H Bittorf Field |
| Stevens Point Municipal (STE) | Stevens Point | WI | Gary Chicago International to Stevens Point Municipal |
| Lambert St Louis International (STL) | St Louis | MO | Gary Chicago International to Lambert St Louis International |
| St Paul Downtown Holman Field (STP) | St Paul | MN | Gary Chicago International to St Paul Downtown Holman Field |
| Door County Cherryland (SUE) | Sturgeon Bay | WI | Gary Chicago International to Door County Cherryland |
| Spirit of St Louis (SUS) | St Louis | MO | Gary Chicago International to Spirit of St Louis |
| Waynesville St Robert Regional/Forney Field (TBN) | Fort Leonard Wood | MO | Gary Chicago International to Waynesville St Robert Regional/Forney Field |
| Toledo Executive (TDZ) | Toledo | OH | Gary Chicago International to Toledo Executive |
| Newton Municipal (TNU) | Newton | IA | Gary Chicago International to Newton Municipal |
| Toledo Express (TOL) | Toledo | OH | Gary Chicago International to Toledo Express |
| Trenton Municipal (TRX) | Trenton | MO | Gary Chicago International to Trenton Municipal |
| Cherry Capital (TVC) | Traverse City | MI | Gary Chicago International to Cherry Capital |
| Tuscola Area (TZC) | Caro | MI | Gary Chicago International to Tuscola Area |
| Everett-Stewart Regional (UCY) | Union City | TN | Gary Chicago International to Everett-Stewart Regional |
| Waukesha County (UES) | Waukesha | WI | Gary Chicago International to Waukesha County |
| Chicago/Waukegan Regional (UGN) | Chicago | IL | Gary Chicago International to Chicago/Waukegan Regional |
| Baldwin Field/Quincy Regional (UIN) | Quincy | IL | Gary Chicago International to Baldwin Field/Quincy Regional |
| Waukon Municipal Airport (UKN) | Waukon | IA | Gary Chicago International to Waukon Municipal Airport |
| New Ulm Municipal (ULM) | New Ulm | MN | Gary Chicago International to New Ulm Municipal |
| Dodge County (UNU) | Juneau | WI | Gary Chicago International to Dodge County |
| Rolla National (VIH) | Rolla/Vichy | MO | Gary Chicago International to Rolla National |
| Vandalia Municipal (VLA) | Vandalia | IL | Gary Chicago International to Vandalia Municipal |
| Roy Otten Memorial Airfield (VRS) | Versailles | MO | Gary Chicago International to Roy Otten Memorial Airfield |
| Walter A Duncan Field/Illinois Valley Regional (VYS) | Peru | IL | Gary Chicago International to Walter A Duncan Field/Illinois Valley Regional |
| Greene County (WAY) | Waynesburg | PA | Gary Chicago International to Greene County |
| West Branch Community (WBK) | West Branch | MI | Gary Chicago International to West Branch Community |
| Roben-Hood (WBR) | Big Rapids | MI | Gary Chicago International to Roben-Hood |
| Washington County (WSG) | Washington | PA | Gary Chicago International to Washington County |
| Grand Geneva Resort (XES) | Lake Geneva | WI | Gary Chicago International to Grand Geneva Resort |
| Brantford Municipal (XFV) | Brantford | ON | Gary Chicago International to Brantford Municipal |
| Sault Ste Marie (YAM) | Sault Ste Marie | ON | Gary Chicago International to Sault Ste Marie |
| Centralia/James T Field Memorial (YCE) | Centralia | ON | Gary Chicago International to Centralia/James T Field Memorial |
| Chatham-Kent Municipal (YCK) | Chatham | ON | Gary Chicago International to Chatham-Kent Municipal |
| Bar River (YEB) | Bar River | ON | Gary Chicago International to Bar River |
| Manitowaning Manitoulin East Municipal (YEM) | Manitowaning | ON | Gary Chicago International to Manitowaning Manitoulin East Municipal |
| Goderich Municipal (YGD) | Goderich | ON | Gary Chicago International to Goderich Municipal |
| John C Munro Hamilton International (YHM) | Hamilton | ON | Gary Chicago International to John C Munro Hamilton International |
| Saugeen Municipal (YHS) | Hanover | ON | Gary Chicago International to Saugeen Municipal |
| Willow Run (YIP) | Detroit | MI | Gary Chicago International to Willow Run |
| Kincardine (YKD) | Kincardine | ON | Gary Chicago International to Kincardine |
| Youngstown/Warren Regional (YNG) | Youngstown | OH | Gary Chicago International to Youngstown/Warren Regional |
| Owen Sound - Billy Bishop Regional (YOS) | Owen Sound | ON | Gary Chicago International to Owen Sound - Billy Bishop Regional |
| Pelee Island (YPT) | Pelee Island | ON | Gary Chicago International to Pelee Island |
| Windsor (YQG) | Windsor | ON | Gary Chicago International to Windsor |
| St Thomas Municipal (YQS) | St Thomas | ON | Gary Chicago International to St Thomas Municipal |
| Stratford Municipal (YSA) | Stratford | ON | Gary Chicago International to Stratford Municipal |
| Wiarton (YVV) | Wiarton | ON | Gary Chicago International to Wiarton |
| London (YXU) | London | ON | Gary Chicago International to London |
| Gore Bay Manitoulin (YZE) | Gore Bay | ON | Gary Chicago International to Gore Bay Manitoulin |
| Sarnia/Chris Hadfield (YZR) | Sarnia | ON | Gary Chicago International to Sarnia/Chris Hadfield |
| Zanesville Municipal (ZZV) | Zanesville | OH | Gary Chicago International to Zanesville Municipal |
