| Antrim County (ACB) | Bellaire | MI | Lima Allen County to Antrim County |
| Lenawee County (ADG) | Adrian | MI | Lima Allen County to Lenawee County |
| Allegheny County (AGC) | Pittsburgh | PA | Lima Allen County to Allegheny County |
| Anderson Municipal-Darlington Field (AID) | Anderson | IN | Lima Allen County to Anderson Municipal-Darlington Field |
| Akron Fulton International (AKC) | Akron | OH | Lima Allen County to Akron Fulton International |
| St Louis Regional (ALN) | Alton | IL | Lima Allen County to St Louis Regional |
| Gratiot Community (AMN) | Alma | MI | Lima Allen County to Gratiot Community |
| Tri-State Steuben County (ANQ) | Angola | IN | Lima Allen County to Tri-State Steuben County |
| Altoona/Blair County (AOO) | Altoona | PA | Lima Allen County to Altoona/Blair County |
| Alpena County Regional (APN) | Alpena | MI | Lima Allen County to Alpena County Regional |
| Marion County-Brown Field (APT) | Jasper | TN | Lima Allen County to Marion County-Brown Field |
| Ann Arbor Municipal (ARB) | Ann Arbor | MI | Lima Allen County to Ann Arbor Municipal |
| Gordon K Bush Ohio University (ATO) | Athens/Albany | OH | Lima Allen County to Gordon K Bush Ohio University |
| Appleton International (ATW) | Appleton | WI | Lima Allen County to Appleton International |
| Chicago/Aurora Municipal (AUZ) | Chicago | IL | Lima Allen County to Chicago/Aurora Municipal |
| Asheville Regional (AVL) | Asheville | NC | Lima Allen County to Asheville Regional |
| Kalamazoo/Battle Creek International (AZO) | Kalamazoo | MI | Lima Allen County to Kalamazoo/Battle Creek International |
| Virginia Tech Montgomery Executive (BCB) | Blacksburg | VA | Lima Allen County to Virginia Tech Montgomery Executive |
| Southwest Michigan Regional (BEH) | Benton Harbor | MI | Lima Allen County to Southwest Michigan Regional |
| Bradford Regional (BFD) | Bradford | PA | Lima Allen County to Bradford Regional |
| Beaver County (BFP) | Beaver Falls | PA | Lima Allen County to Beaver County |
| Virgil I Grissom Municipal (BFR) | Bedford | IN | Lima Allen County to Virgil I Grissom Municipal |
| Wayne County (BJJ) | Wooster | OH | Lima Allen County to Wayne County |
| Burke Lakefront (BKL) | Cleveland | OH | Lima Allen County to Burke Lakefront |
| Raleigh County Memorial (BKW) | Beckley | WV | Lima Allen County to Raleigh County Memorial |
| Mercer County (BLF) | Bluefield | WV | Lima Allen County to Mercer County |
| MidAmerica St Louis Scott AFB (BLV) | Belleville | IL | Lima Allen County to MidAmerica St Louis Scott AFB |
| Monroe County (BMG) | Bloomington | IN | Lima Allen County to Monroe County |
| Central Illinois Regional at Bloomington Normal (BMI) | Bloomington | IL | Lima Allen County to Central Illinois Regional at Bloomington Normal |
| Nashville International (BNA) | Nashville | TN | Lima Allen County to Nashville International |
| Southeast Iowa Regional (BRL) | Burlington | IA | Lima Allen County to Southeast Iowa Regional |
| Samuels Field (BRY) | Bardstown | KY | Lima Allen County to Samuels Field |
| W K Kellogg Regional (BTL) | Battle Creek | MI | Lima Allen County to W K Kellogg Regional |
| Butler County/K W Scholter Field (BTP) | Butler | PA | Lima Allen County to Butler County/K W Scholter Field |
| Buffalo Niagara International (BUF) | Buffalo | NY | Lima Allen County to Buffalo Niagara International |
| Bowling Green Warren County Regional (BWG) | Bowling Green | KY | Lima Allen County to Bowling Green Warren County Regional |
| Baltimore/Washington Intl Thurgood Marshall (BWI) | Baltimore | MD | Lima Allen County to Baltimore/Washington Intl Thurgood Marshall |
| Wexford County (CAD) | Cadillac | MI | Lima Allen County to Wexford County |
| Akron/Canton Regional (CAK) | Akron | OH | Lima Allen County to Akron/Canton Regional |
| Greater Cumberland Regional (CBE) | Cumberland | MD | Lima Allen County to Greater Cumberland Regional |
| Mettel Field (CEV) | Connersville | IN | Lima Allen County to Mettel Field |
| Kyle-Oakley Field (CEY) | Murray | KY | Lima Allen County to Kyle-Oakley Field |
| Cuyahoga County (CGF) | Cleveland | OH | Lima Allen County to Cuyahoga County |
| Cape Girardeau Regional (CGI) | Cape Girardeau | MO | Lima Allen County to Cape Girardeau Regional |
| College Park Airport (CGS) | College Park | MD | Lima Allen County to College Park Airport |
| Lovell Field (CHA) | Chattanooga | TN | Lima Allen County to Lovell Field |
| Charlottesville Albemarle (CHO) | Charlottesville | VA | Lima Allen County to Charlottesville Albemarle |
| Cairo Regional (CIR) | Cairo | IL | Lima Allen County to Cairo Regional |
| Chippewa County International (CIU) | Sault Ste Marie | MI | Lima Allen County to Chippewa County International |
| North Central West Virginia (CKB) | Clarksburg | WV | Lima Allen County to North Central West Virginia |
| Outlaw Field (CKV) | Clarksville | TN | Lima Allen County to Outlaw Field |
| Cleveland/Hopkins International (CLE) | Cleveland | OH | Lima Allen County to Cleveland/Hopkins International |
| Clintonville Municipal (CLI) | Clintonville | WI | Lima Allen County to Clintonville Municipal |
| Columbus Municipal (CLU) | Columbus | IN | Lima Allen County to Columbus Municipal |
| John Glenn International (CMH) | Columbus | OH | Lima Allen County to John Glenn International |
| University of Illinois-Willard (CMI) | Champaign/Urbana | IL | Lima Allen County to University of Illinois-Willard |
| St Louis Downtown (CPS) | Cahokia/St Louis | IL | Lima Allen County to St Louis Downtown |
| Yeager (CRW) | Charleston | WV | Lima Allen County to Yeager |
| Crossville Memorial/Whitson Field (CSV) | Crossville | TN | Lima Allen County to Crossville Memorial/Whitson Field |
| Cincinnati Northern Kentucky International (CVG) | Cincinnati | OH | Lima Allen County to Cincinnati Northern Kentucky International |
| Central Wisconsin (CWA) | Mosinee | WI | Lima Allen County to Central Wisconsin |
| Clinton Municipal (CWI) | Clinton | IA | Lima Allen County to Clinton Municipal |
| Burlington Executive (CZB) | Burlington | ON | Lima Allen County to Burlington Executive |
| Danville Regional (DAN) | Danville | VA | Lima Allen County to Danville Regional |
| Dayton International James M Cox (DAY) | Dayton | OH | Lima Allen County to Dayton International James M Cox |
| Dubuque Regional (DBQ) | Dubuque | IA | Lima Allen County to Dubuque Regional |
| Decatur (DEC) | Decatur | IL | Lima Allen County to Decatur |
| Coleman A Young Municipal (DET) | Detroit | MI | Lima Allen County to Coleman A Young Municipal |
| Defiance Memorial (DFI) | Defiance | OH | Lima Allen County to Defiance Memorial |
| Chautauqua County/Dunkirk (DKK) | Dunkirk | NY | Lima Allen County to Chautauqua County/Dunkirk |
| Vermilion Regional (DNV) | Danville | IL | Lima Allen County to Vermilion Regional |
| Dupage (DPA) | Chicago | IL | Lima Allen County to Dupage |
| Drummond Island (DRE) | Drummond Island | MI | Lima Allen County to Drummond Island |
| Dansville Municipal (DSV) | Dansville | NY | Lima Allen County to Dansville Municipal |
| Detroit Metro Wayne County (DTW) | Detroit | MI | Lima Allen County to Detroit Metro Wayne County |
| Dunnville (DU9) | Dunnville | ON | Lima Allen County to Dunnville |
| Dubois Regional (DUJ) | DuBois | PA | Lima Allen County to Dubois Regional |
| Davenport Municipal (DVN) | Davenport | IA | Lima Allen County to Davenport Municipal |
| Iosco County (ECA) | East Tawas | MI | Lima Allen County to Iosco County |
| Elkhart Municipal (EKI) | Elkhart | IN | Lima Allen County to Elkhart Municipal |
| Elkins/Randolph County (EKN) | Elkins | WV | Lima Allen County to Elkins/Randolph County |
| Addington Field (EKX) | Elizabethtown | KY | Lima Allen County to Addington Field |
| Elmira/Corning Regional (ELM) | Elmira | NY | Lima Allen County to Elmira/Corning Regional |
| Wellsville Municipal/Tarantine Field (ELZ) | Wellsville | NY | Lima Allen County to Wellsville Municipal/Tarantine Field |
| Centralia Municipal (ENL) | Centralia | IL | Lima Allen County to Centralia Municipal |
| Kenosha Regional (ENW) | Kenosha | WI | Lima Allen County to Kenosha Regional |
| Keokuk Municipal (EOK) | Keokuk | IA | Lima Allen County to Keokuk Municipal |
| Erie International/Tom Ridge Field (ERI) | Erie | PA | Lima Allen County to Erie International/Tom Ridge Field |
| Delta County (ESC) | Escanaba | MI | Lima Allen County to Delta County |
| West Bend Municipal (ETB) | West Bend | WI | Lima Allen County to West Bend Municipal |
| Evansville Regional (EVV) | Evansville | IN | Lima Allen County to Evansville Regional |
| Farmington Regional (FAM) | Farmington | MO | Lima Allen County to Farmington Regional |
| Frederick Municipal (FDK) | Frederick | MD | Lima Allen County to Frederick Municipal |
| Albertus (FEP) | Freeport | IL | Lima Allen County to Albertus |
| Capital City (FFT) | Frankfort | KY | Lima Allen County to Capital City |
| Venango Regional (FKL) | Franklin | PA | Lima Allen County to Venango Regional |
| Fond Du Lac County (FLD) | Fond Du Lac | WI | Lima Allen County to Fond Du Lac County |
| Fort Meade (Odenton) Tipton (FME) | Fort Meade Odenton | MD | Lima Allen County to Fort Meade (Odenton) Tipton |
| Fort Madison Municipal (FMS) | Fort Madison | IA | Lima Allen County to Fort Madison Municipal |
| Bishop International (FNT) | Flint | MI | Lima Allen County to Bishop International |
| French Lick Municipal (FRH) | French Lick | IN | Lima Allen County to French Lick Municipal |
| Front Royal-Warren County (FRR) | Front Royal | VA | Lima Allen County to Front Royal-Warren County |
| Fort Wayne International (FWA) | Fort Wayne | IN | Lima Allen County to Fort Wayne International |
| Montgomery County Airpark (GAI) | Gaithersburg | MD | Lima Allen County to Montgomery County Airpark |
| Galesburg Municipal (GBG) | Galesburg | IL | Lima Allen County to Galesburg Municipal |
| Greeneville-Greene County Municipal (GCY) | Greeneville | TN | Lima Allen County to Greeneville-Greene County Municipal |
| Gladwin Zettel Memorial (GDW) | Gladwin | MI | Lima Allen County to Gladwin Zettel Memorial |
| Centerville Municipal (GHM) | Centerville | TN | Lima Allen County to Centerville Municipal |
| Gatlinburg-Pigeon Forge (GKT) | Sevierville | TN | Lima Allen County to Gatlinburg-Pigeon Forge |
| Gaylord Regional (GLR) | Gaylord | MI | Lima Allen County to Gaylord Regional |
| Glasgow Municipal (GLW) | Glasgow | KY | Lima Allen County to Glasgow Municipal |
| Galion Municipal (GQQ) | Galion | OH | Lima Allen County to Galion Municipal |
| Austin Straubel International (GRB) | Green Bay | WI | Lima Allen County to Austin Straubel International |
| Greenville (GRE) | Greenville | IL | Lima Allen County to Greenville |
| Gerald R Ford International (GRR) | Grand Rapids | MI | Lima Allen County to Gerald R Ford International |
| Goshen Municipal (GSH) | Goshen | IN | Lima Allen County to Goshen Municipal |
| Piedmont Triad International (GSO) | Greensboro | NC | Lima Allen County to Piedmont Triad International |
| Gettysburg Regional (GTY) | Gettysburg | PA | Lima Allen County to Gettysburg Regional |
| Grissom Aeroplex/Arb (GUS) | Peru | IN | Lima Allen County to Grissom Aeroplex/Arb |
| Gordonsville Municipal Airport (GVE) | Gordonsville | VA | Lima Allen County to Gordonsville Municipal Airport |
| Gary/Chicago International (GYY) | GARY | IN | Lima Allen County to Gary/Chicago International |
| Three Rivers Municipal Dr Haines (HAI) | Three Rivers | MI | Lima Allen County to Three Rivers Municipal Dr Haines |
| Butler County Regional-Hogan Field (HAO) | Hamilton | OH | Lima Allen County to Butler County Regional-Hogan Field |
| Capital City Harrisburg (HAR) | Harrisburg | PA | Lima Allen County to Capital City Harrisburg |
| Richard A Henson Field/Hagerstown Regional (HGR) | Hagerstown | MD | Lima Allen County to Richard A Henson Field/Hagerstown Regional |
| Hickory Regional (HKY) | Hickory | NC | Lima Allen County to Hickory Regional |
| Wheeling Ohio County (HLG) | Wheeling | WV | Lima Allen County to Wheeling Ohio County |
| Park Township (HLM) | Holland | MI | Lima Allen County to Park Township |
| Huntingburg (HNB) | Huntingburg | IN | Lima Allen County to Huntingburg |
| Harrisburg-Raleigh (HSB) | Harrisburg | IL | Lima Allen County to Harrisburg-Raleigh |
| Ingalls Field (HSP) | Hot Springs | VA | Lima Allen County to Ingalls Field |
| Roscommon County - Blodgett Memorial (HTL) | Houghton Lake | MI | Lima Allen County to Roscommon County - Blodgett Memorial |
| Tri-State Milton J Ferguson Field (HTS) | Huntington | WV | Lima Allen County to Tri-State Milton J Ferguson Field |
| Lawrence County Airpark (HTW) | Chesapeake | OH | Lima Allen County to Lawrence County Airpark |
| Terre Haute Regional/Hulman Field (HUF) | Terre Haute | IN | Lima Allen County to Terre Haute Regional/Hulman Field |
| Washington Dulles International (IAD) | Washington | VA | Lima Allen County to Washington Dulles International |
| Niagara Falls International (IAG) | Niagara Falls | NY | Lima Allen County to Niagara Falls International |
| Indiana County/Jimmy Stewart Field (IDI) | Indiana | PA | Lima Allen County to Indiana County/Jimmy Stewart Field |
| Jacksonville Municipal (IJX) | Jacksonville | IL | Lima Allen County to Jacksonville Municipal |
| Wilkes County (IKB) | N Wilkesboro | NC | Lima Allen County to Wilkes County |
| Greater Kankakee (IKK) | Kankakee | IL | Lima Allen County to Greater Kankakee |
| Wilmington Airpark (ILN) | Wilmington | OH | Lima Allen County to Wilmington Airpark |
| Indianapolis International (IND) | Indianapolis | IN | Lima Allen County to Indianapolis International |
| Smith Reynolds (INT) | Winston-Salem | NC | Lima Allen County to Smith Reynolds |
| Iowa City Municipal (IOW) | Iowa City | IA | Lima Allen County to Iowa City Municipal |
| Williamsport Regional (IPT) | Williamsport | PA | Lima Allen County to Williamsport Regional |
| Kirsch Municipal (IRS) | Sturgis | MI | Lima Allen County to Kirsch Municipal |
| Schoolcraft County (ISQ) | Manistique | MI | Lima Allen County to Schoolcraft County |
| Alexander Field South Wood County (ISW) | Wisconsin Rapids | WI | Lima Allen County to Alexander Field South Wood County |
| Northeast Ohio Regional (JFN) | Ashtabula | OH | Lima Allen County to Northeast Ohio Regional |
| Chautauqua County/Jamestown (JHW) | Jamestown | NY | Lima Allen County to Chautauqua County/Jamestown |
| Joliet Regional Airport (JOT) | Joliet | IL | Lima Allen County to Joliet Regional Airport |
| John Murtha Johnstown/Cambria County (JST) | Johnstown | PA | Lima Allen County to John Murtha Johnstown/Cambria County |
| Souther Wisconsin Regional (JVL) | Janesville | WI | Lima Allen County to Souther Wisconsin Regional |
| Jackson County/Reynolds Field (JXN) | Jackson | MI | Lima Allen County to Jackson County/Reynolds Field |
| Kentland Municipal (KKT) | Kentland | IN | Lima Allen County to Kentland Municipal |
| Purdue University (LAF) | Lafayette | IN | Lima Allen County to Purdue University |
| Capital Region International (LAN) | Lansing | MI | Lima Allen County to Capital Region International |
| Arnold Palmer Regional (LBE) | Latrobe | PA | Lima Allen County to Arnold Palmer Regional |
| Rickenbacker International (LCK) | Columbus | OH | Lima Allen County to Rickenbacker International |
| Mason County (LDM) | Ludington | MI | Lima Allen County to Mason County |
| Blue Grass (LEX) | Lexington | KY | Lima Allen County to Blue Grass |
| William T. Piper Memorial (LHV) | Lock Haven | PA | Lima Allen County to William T. Piper Memorial |
| Willoughby Lost Nation Municipal (LNN) | Willoughby | OH | Lima Allen County to Willoughby Lost Nation Municipal |
| Lonesome Pine (LNP) | Wise | VA | Lima Allen County to Lonesome Pine |
| Tri-County Regional (LNR) | Lone Rock | WI | Lima Allen County to Tri-County Regional |
| Lewis University Chicago Romeoville (LOT) | Chicago/Romeoville | IL | Lima Allen County to Lewis University Chicago Romeoville |
| Bowman Field (LOU) | Louisville | KY | Lima Allen County to Bowman Field |
| Louisa County/Freeman Field (LOW) | Louisa | VA | Lima Allen County to Louisa County/Freeman Field |
| London Corbin Magee Field (LOZ) | London | KY | Lima Allen County to London Corbin Magee Field |
| La Porte Municipal (LPO) | La Porte | IN | Lima Allen County to La Porte Municipal |
| Cincinnati Municipal Lunken (LUK) | Cincinnati | OH | Lima Allen County to Cincinnati Municipal Lunken |
| Greenbrier Valley (LWB) | Lewisburg | WV | Lima Allen County to Greenbrier Valley |
| Lawrenceville-Vincennes International (LWV) | Lawrenceville | IL | Lima Allen County to Lawrenceville-Vincennes International |
| Lynchburg Regional/Preston Glenn Field (LYH) | Lynchburg | VA | Lima Allen County to Lynchburg Regional/Preston Glenn Field |
| Manistee County-Blacker (MBL) | Manistee | MI | Lima Allen County to Manistee County-Blacker |
| Mbs International (MBS) | Saginaw | MI | Lima Allen County to Mbs International |
| Mackinac Island (MCD) | Mackinac Island | MI | Lima Allen County to Mackinac Island |
| Southern Illinois (MDH) | Carbondale/Murphysboro | IL | Lima Allen County to Southern Illinois |
| Madison Municipal (MDN) | Madison | IN | Lima Allen County to Madison Municipal |
| Harrisburg International (MDT) | Harrisburg | PA | Lima Allen County to Harrisburg International |
| Chicago Midway International (MDW) | Chicago | IL | Lima Allen County to Chicago Midway International |
| Port Meadville (MEJ) | Meadville | PA | Lima Allen County to Port Meadville |
| Mansfield Lahm Regional (MFD) | Mansfield | OH | Lima Allen County to Mansfield Lahm Regional |
| Michigan City Municipal-Phillips Field (MGC) | Michigan City | IN | Lima Allen County to Michigan City Municipal-Phillips Field |
| Morgantown Municipal Walter L Bill Hart Field (MGW) | Morgantown | WV | Lima Allen County to Morgantown Municipal Walter L Bill Hart Field |
| Dayton-Wright Brothers (MGY) | Dayton | OH | Lima Allen County to Dayton-Wright Brothers |
| Delaware County Regional (MIE) | Muncie | IN | Lima Allen County to Delaware County Regional |
| Milwaukee General Mitchell International (MKE) | Milwaukee | WI | Lima Allen County to Milwaukee General Mitchell International |
| Muskegon County (MKG) | Muskegon | MI | Lima Allen County to Muskegon County |
| Quad City International (MLI) | Moline | IL | Lima Allen County to Quad City International |
| Mcminn County (MMI) | Athens | TN | Lima Allen County to Mcminn County |
| Menominee-Marinette Twin County (MNM) | Menominee | MI | Lima Allen County to Menominee-Marinette Twin County |
| Marion Municipal (MNN) | Marion | OH | Lima Allen County to Marion Municipal |
| Manassas Regional/Harry P Davis Field (MNZ) | Manassas | VA | Lima Allen County to Manassas Regional/Harry P Davis Field |
| Mount Pleasant Municipal (MOP) | Mount Pleasant | MI | Lima Allen County to Mount Pleasant Municipal |
| Moore-Murrell (MOR) | Morristown | TN | Lima Allen County to Moore-Murrell |
| Mount Pleasant Municipal (MPZ) | Mount Pleasant | IA | Lima Allen County to Mount Pleasant Municipal |
| Macomb Municipal (MQB) | Macomb | IL | Lima Allen County to Macomb Municipal |
| Smyrna (MQY) | Smyrna | TN | Lima Allen County to Smyrna |
| Eastern West Virginia Regional/Shepherd Field (MRB) | Martinsburg | WV | Lima Allen County to Eastern West Virginia Regional/Shepherd Field |
| Maury County (MRC) | Columbia | TN | Lima Allen County to Maury County |
| Foothills Regional (MRN) | Morganton | NC | Lima Allen County to Foothills Regional |
| Truax Field/Dane County Regional (MSN) | Madison | WI | Lima Allen County to Truax Field/Dane County Regional |
| Coles County Memorial (MTO) | Mattoon/Charleston | IL | Lima Allen County to Coles County Memorial |
| Manitowoc County (MTW) | Manitowoc | WI | Lima Allen County to Manitowoc County |
| Muscatine Municipal (MUT) | Muscatine | IA | Lima Allen County to Muscatine Municipal |
| Mount Vernon (MVN) | Mount Vernon | IL | Lima Allen County to Mount Vernon |
| Williamson County Rgnl (MWA) | Marion | IL | Lima Allen County to Williamson County Rgnl |
| Lawrence J Timmerman (MWC) | Milwaukee | WI | Lima Allen County to Lawrence J Timmerman |
| Middletown Regional - Hook Field (MWO) | Middletown | OH | Lima Allen County to Middletown Regional - Hook Field |
| Monticello Regional (MXO) | Monticello | IA | Lima Allen County to Monticello Regional |
| Marion Municipal (MZZ) | Marion | IN | Lima Allen County to Marion Municipal |
| Lindsay (NF4) | Lindsay | ON | Lima Allen County to Lindsay |
| Jerry Tyler Memorial (NLE) | Niles | MI | Lima Allen County to Jerry Tyler Memorial |
| Niagara Central (NQ3) | Welland | ON | Lima Allen County to Niagara Central |
| Tobermory (NR4) | Tobermory | ON | Lima Allen County to Tobermory |
| Toronto/Markham (NU8) | Markham | | Lima Allen County to Toronto/Markham |
| Collingwood (NY3) | Collingwood | ON | Lima Allen County to Collingwood |
| Garrett County (ODM) | Oakland | MD | Lima Allen County to Garrett County |
| Kokomo Municipal (OKK) | Kokomo | IN | Lima Allen County to Kokomo Municipal |
| Cattaraugus County-Olean Municipal (OLE) | Olean | NY | Lima Allen County to Cattaraugus County-Olean Municipal |
| Olney-Noble (OLY) | Olney-Noble | IL | Lima Allen County to Olney-Noble |
| Chicago O'hare International (ORD) | Chicago | IL | Lima Allen County to Chicago O'hare International |
| Oscoda-Wurtsmith (OSC) | Oscoda | MI | Lima Allen County to Oscoda-Wurtsmith |
| Wittman Regional (OSH) | Oshkosh | WI | Lima Allen County to Wittman Regional |
| Ohio State University (OSU) | Columbus | OH | Lima Allen County to Ohio State University |
| Owensboro-Daviess County Regional (OWB) | Owensboro | KY | Lima Allen County to Owensboro-Daviess County Regional |
| Miami University (OXD) | Oxford | OH | Lima Allen County to Miami University |
| Barkley Regional (PAH) | Paducah | KY | Lima Allen County to Barkley Regional |
| Prairie Du Chien Municipal (PCD) | Prairie Duchien | WI | Lima Allen County to Prairie Du Chien Municipal |
| Cambridge/Reid's Field (PE4) | Cambridge | ON | Lima Allen County to Cambridge/Reid's Field |
| Grant County (PGC) | Petersburg | WV | Lima Allen County to Grant County |
| Harry Clever Field (PHD) | New Philadelphia | OH | Lima Allen County to Harry Clever Field |
| St Clair County International (PHN) | Port Huron | MI | Lima Allen County to St Clair County International |
| Henry County (PHT) | Paris | TN | Lima Allen County to Henry County |
| Gen Wayne A Downing Peoria International (PIA) | Peoria | IL | Lima Allen County to Gen Wayne A Downing Peoria International |
| Pittsburgh International (PIT) | Pittsburgh | PA | Lima Allen County to Pittsburgh International |
| Mid Ohio Valley Regional (PKB) | Parkersburg | WV | Lima Allen County to Mid Ohio Valley Regional |
| Pellston Regional of Emmet County (PLN) | Pellston | MI | Lima Allen County to Pellston Regional of Emmet County |
| Plymouth Municipal (PLY) | Plymouth | IN | Lima Allen County to Plymouth Municipal |
| Greater Portsmouth Regional (PMH) | Portsmouth | OH | Lima Allen County to Greater Portsmouth Regional |
| Wingham/Richard W Levan (PR7) | Wingham | ON | Lima Allen County to Wingham/Richard W Levan |
| Mid-State (PSB) | Philipsburg | PA | Lima Allen County to Mid-State |
| New River Valley (PSK) | Dublin | VA | Lima Allen County to New River Valley |
| Killarney (PT2) | Killarney | ON | Lima Allen County to Killarney |
| Oakland County International (PTK) | Pontiac | MI | Lima Allen County to Oakland County International |
| Chicago Executive (PWK) | Chicago | IL | Lima Allen County to Chicago Executive |
| Batten International (RAC) | Racine | WI | Lima Allen County to Batten International |
| Fulton County (RCR) | Rochester | IN | Lima Allen County to Fulton County |
| Nartron Field (RCT) | Reed City | MI | Lima Allen County to Nartron Field |
| Mifflin County (RED) | Reedsville | PA | Lima Allen County to Mifflin County |
| Chicago/Rockford International (RFD) | Rockford | IL | Lima Allen County to Chicago/Rockford International |
| Richmond Municipal (RID) | Richmond | IN | Lima Allen County to Richmond Municipal |
| Rockwood Municipal (RKW) | Rockwood | TN | Lima Allen County to Rockwood Municipal |
| Warren County Memorial (RNC) | McMinnville | TN | Lima Allen County to Warren County Memorial |
| Jasper County (RNZ) | Rensselaer | IN | Lima Allen County to Jasper County |
| Roanoke Regional/Woodrum Field (ROA) | Roanoke | VA | Lima Allen County to Roanoke Regional/Woodrum Field |
| Greater Rochester International (ROC) | Rochester | NY | Lima Allen County to Greater Rochester International |
| Sparta Community - Hunter Field (SAR) | Sparta | IL | Lima Allen County to Sparta Community - Hunter Field |
| Sheboygan County Memorial (SBM) | Sheboygan | WI | Lima Allen County to Sheboygan County Memorial |
| South Bend International (SBN) | South Bend | IN | Lima Allen County to South Bend International |
| University Park (SCE) | State College | PA | Lima Allen County to University Park |
| Louisville International/Standiford Field (SDF) | Louisville | KY | Lima Allen County to Louisville International/Standiford Field |
| Penn Valley (SEG) | Selinsgrove | PA | Lima Allen County to Penn Valley |
| Freeman Municipal (SER) | Seymour | IN | Lima Allen County to Freeman Municipal |
| Springfield/Beckley Municipal (SGH) | Springfield | OH | Lima Allen County to Springfield/Beckley Municipal |
| Shenandoah Valley Regional (SHD) | Staunton | VA | Lima Allen County to Shenandoah Valley Regional |
| Sikeston Memorial Municipal (SIK) | Sikeston | MO | Lima Allen County to Sikeston Memorial Municipal |
| Sullivan County (SIV) | Sullivan | IN | Lima Allen County to Sullivan County |
| Salem-Leckrone (SLO) | Salem | IL | Lima Allen County to Salem-Leckrone |
| Smith Field (SMD) | Fort Wayne | IN | Lima Allen County to Smith Field |
| Lake Cumberland Regional (SME) | Somerset | KY | Lima Allen County to Lake Cumberland Regional |
| Abraham Lincoln Capital (SPI) | Springfield | IL | Lima Allen County to Abraham Lincoln Capital |
| Whiteside Co-Jos H Bittorf Field (SQI) | Sterling/Rock Falls | IL | Lima Allen County to Whiteside Co-Jos H Bittorf Field |
| Salisbury/Rowan County (SRW) | Salisbury | NC | Lima Allen County to Salisbury/Rowan County |
| Stevens Point Municipal (STE) | Stevens Point | WI | Lima Allen County to Stevens Point Municipal |
| Lambert St Louis International (STL) | St Louis | MO | Lima Allen County to Lambert St Louis International |
| St Marys Municipal (STQ) | St Marys | PA | Lima Allen County to St Marys Municipal |
| Door County Cherryland (SUE) | Sturgeon Bay | WI | Lima Allen County to Door County Cherryland |
| Spirit of St Louis (SUS) | St Louis | MO | Lima Allen County to Spirit of St Louis |
| Statesville Regional (SVH) | Statesville | NC | Lima Allen County to Statesville Regional |
| Shelbyville Municipal/Bomar Field (SYI) | Shelbyville | TN | Lima Allen County to Shelbyville Municipal/Bomar Field |
| Toledo Executive (TDZ) | Toledo | OH | Lima Allen County to Toledo Executive |
| Tullahoma Regional/William Northern Field (THA) | Tullahoma | TN | Lima Allen County to Tullahoma Regional/William Northern Field |
| York (THV) | York | PA | Lima Allen County to York |
| Toledo Express (TOL) | Toledo | OH | Lima Allen County to Toledo Express |
| Tri-Cities Regional Tn/Va (TRI) | Bristol/Johnson/Kingsport | TN | Lima Allen County to Tri-Cities Regional Tn/Va |
| Cherry Capital (TVC) | Traverse City | MI | Lima Allen County to Cherry Capital |
| Mcghee Tyson (TYS) | Knoxville | TN | Lima Allen County to Mcghee Tyson |
| Tuscola Area (TZC) | Caro | MI | Lima Allen County to Tuscola Area |
| Everett-Stewart Regional (UCY) | Union City | TN | Lima Allen County to Everett-Stewart Regional |
| Waukesha County (UES) | Waukesha | WI | Lima Allen County to Waukesha County |
| Chicago/Waukegan Regional (UGN) | Chicago | IL | Lima Allen County to Chicago/Waukegan Regional |
| Baldwin Field/Quincy Regional (UIN) | Quincy | IL | Lima Allen County to Baldwin Field/Quincy Regional |
| Dodge County (UNU) | Juneau | WI | Lima Allen County to Dodge County |
| Franklin County (UOS) | Sewanee | TN | Lima Allen County to Franklin County |
| Virginia Highlands (VJI) | Abingdon | VA | Lima Allen County to Virginia Highlands |
| Vandalia Municipal (VLA) | Vandalia | IL | Lima Allen County to Vandalia Municipal |
| Porter County Regional (VPZ) | Valparaiso | IN | Lima Allen County to Porter County Regional |
| Walter A Duncan Field/Illinois Valley Regional (VYS) | Peru | IL | Lima Allen County to Walter A Duncan Field/Illinois Valley Regional |
| Greene County (WAY) | Waynesburg | PA | Lima Allen County to Greene County |
| West Branch Community (WBK) | West Branch | MI | Lima Allen County to West Branch Community |
| Roben-Hood (WBR) | Big Rapids | MI | Lima Allen County to Roben-Hood |
| Winchester Regional (WGO) | Winchester | VA | Lima Allen County to Winchester Regional |
| Washington County (WSG) | Washington | PA | Lima Allen County to Washington County |
| Grand Geneva Resort (XES) | Lake Geneva | WI | Lima Allen County to Grand Geneva Resort |
| Brantford Municipal (XFV) | Brantford | ON | Lima Allen County to Brantford Municipal |
| Grimsby Airpark (XGY) | Grimsby | ON | Lima Allen County to Grimsby Airpark |
| Brampton (XPN) | Brampton | ON | Lima Allen County to Brampton |
| Sault Ste Marie (YAM) | Sault Ste Marie | ON | Lima Allen County to Sault Ste Marie |
| Centralia/James T Field Memorial (YCE) | Centralia | ON | Lima Allen County to Centralia/James T Field Memorial |
| Chatham-Kent Municipal (YCK) | Chatham | ON | Lima Allen County to Chatham-Kent Municipal |
| Niagara District (YCM) | St Catharines | ON | Lima Allen County to Niagara District |
| Bar River (YEB) | Bar River | ON | Lima Allen County to Bar River |
| Midland/Huronia (YEE) | Midland | ON | Lima Allen County to Midland/Huronia |
| Elliot Lake Municipal (YEL) | Elliot Lake | ON | Lima Allen County to Elliot Lake Municipal |
| Manitowaning Manitoulin East Municipal (YEM) | Manitowaning | ON | Lima Allen County to Manitowaning Manitoulin East Municipal |
| Goderich Municipal (YGD) | Goderich | ON | Lima Allen County to Goderich Municipal |
| John C Munro Hamilton International (YHM) | Hamilton | ON | Lima Allen County to John C Munro Hamilton International |
| Saugeen Municipal (YHS) | Hanover | ON | Lima Allen County to Saugeen Municipal |
| Willow Run (YIP) | Detroit | MI | Lima Allen County to Willow Run |
| Kincardine (YKD) | Kincardine | ON | Lima Allen County to Kincardine |
| Lake Simcoe Regional (YLS) | Barrie-Orillia | ON | Lima Allen County to Lake Simcoe Regional |
| Youngstown/Warren Regional (YNG) | Youngstown | OH | Lima Allen County to Youngstown/Warren Regional |
| Oshawa (YOO) | Oshawa | ON | Lima Allen County to Oshawa |
| Owen Sound - Billy Bishop Regional (YOS) | Owen Sound | ON | Lima Allen County to Owen Sound - Billy Bishop Regional |
| Parry Sound Area Municipal (YPD) | Parry Sound | ON | Lima Allen County to Parry Sound Area Municipal |
| Peterborough (YPQ) | Peterborough | ON | Lima Allen County to Peterborough |
| Pelee Island (YPT) | Pelee Island | ON | Lima Allen County to Pelee Island |
| Muskoka (YQA) | Gravenhurst | ON | Lima Allen County to Muskoka |
| Windsor (YQG) | Windsor | ON | Lima Allen County to Windsor |
| St Thomas Municipal (YQS) | St Thomas | ON | Lima Allen County to St Thomas Municipal |
| Stratford Municipal (YSA) | Stratford | ON | Lima Allen County to Stratford Municipal |
| Trenton (YTR) | Trenton | ON | Lima Allen County to Trenton |
| Billy Bishop Toronto City (YTZ) | Toronto | ON | Lima Allen County to Billy Bishop Toronto City |
| Wiarton (YVV) | Wiarton | ON | Lima Allen County to Wiarton |
| London (YXU) | London | ON | Lima Allen County to London |
| Toronto Lester B Pearson International (YYZ) | Toronto | ON | Lima Allen County to Toronto Lester B Pearson International |
| Gore Bay Manitoulin (YZE) | Gore Bay | ON | Lima Allen County to Gore Bay Manitoulin |
| Sarnia/Chris Hadfield (YZR) | Sarnia | ON | Lima Allen County to Sarnia/Chris Hadfield |
| Zanesville Municipal (ZZV) | Zanesville | OH | Lima Allen County to Zanesville Municipal |
