| Antrim County (ACB) | Bellaire | MI | Mettel Field to Antrim County |
| Lenawee County (ADG) | Adrian | MI | Mettel Field to Lenawee County |
| Allegheny County (AGC) | Pittsburgh | PA | Mettel Field to Allegheny County |
| Akron Fulton International (AKC) | Akron | OH | Mettel Field to Akron Fulton International |
| St Louis Regional (ALN) | Alton | IL | Mettel Field to St Louis Regional |
| Gratiot Community (AMN) | Alma | MI | Mettel Field to Gratiot Community |
| Anderson Regional (AND) | Anderson | SC | Mettel Field to Anderson Regional |
| Tri-State Steuben County (ANQ) | Angola | IN | Mettel Field to Tri-State Steuben County |
| Lima Allen County (AOH) | Lima | OH | Mettel Field to Lima Allen County |
| Altoona/Blair County (AOO) | Altoona | PA | Mettel Field to Altoona/Blair County |
| Alpena County Regional (APN) | Alpena | MI | Mettel Field to Alpena County Regional |
| Marion County-Brown Field (APT) | Jasper | TN | Mettel Field to Marion County-Brown Field |
| Ann Arbor Municipal (ARB) | Ann Arbor | MI | Mettel Field to Ann Arbor Municipal |
| Walnut Ridge Regional (ARG) | Walnut Ridge | AR | Mettel Field to Walnut Ridge Regional |
| Gordon K Bush Ohio University (ATO) | Athens/Albany | OH | Mettel Field to Gordon K Bush Ohio University |
| Appleton International (ATW) | Appleton | WI | Mettel Field to Appleton International |
| Chicago/Aurora Municipal (AUZ) | Chicago | IL | Mettel Field to Chicago/Aurora Municipal |
| Asheville Regional (AVL) | Asheville | NC | Mettel Field to Asheville Regional |
| Auglaize County Neil Armstrong (AXV) | Wapakoneta | OH | Mettel Field to Auglaize County Neil Armstrong |
| Kalamazoo/Battle Creek International (AZO) | Kalamazoo | MI | Mettel Field to Kalamazoo/Battle Creek International |
| Virginia Tech Montgomery Executive (BCB) | Blacksburg | VA | Mettel Field to Virginia Tech Montgomery Executive |
| Southwest Michigan Regional (BEH) | Benton Harbor | MI | Mettel Field to Southwest Michigan Regional |
| Bradford Regional (BFD) | Bradford | PA | Mettel Field to Bradford Regional |
| Beaver County (BFP) | Beaver Falls | PA | Mettel Field to Beaver County |
| Virgil I Grissom Municipal (BFR) | Bedford | IN | Mettel Field to Virgil I Grissom Municipal |
| Wayne County (BJJ) | Wooster | OH | Mettel Field to Wayne County |
| Burke Lakefront (BKL) | Cleveland | OH | Mettel Field to Burke Lakefront |
| Raleigh County Memorial (BKW) | Beckley | WV | Mettel Field to Raleigh County Memorial |
| Mercer County (BLF) | Bluefield | WV | Mettel Field to Mercer County |
| MidAmerica St Louis Scott AFB (BLV) | Belleville | IL | Mettel Field to MidAmerica St Louis Scott AFB |
| Monroe County (BMG) | Bloomington | IN | Mettel Field to Monroe County |
| Central Illinois Regional at Bloomington Normal (BMI) | Bloomington | IL | Mettel Field to Central Illinois Regional at Bloomington Normal |
| Nashville International (BNA) | Nashville | TN | Mettel Field to Nashville International |
| Southeast Iowa Regional (BRL) | Burlington | IA | Mettel Field to Southeast Iowa Regional |
| Samuels Field (BRY) | Bardstown | KY | Mettel Field to Samuels Field |
| Battle Creek Executive (BTL) | Battle Creek | MI | Mettel Field to Battle Creek Executive |
| Pittsburgh/Butler Regional Airport (BTP) | Butler | PA | Mettel Field to Pittsburgh/Butler Regional Airport |
| Buffalo Niagara International (BUF) | Buffalo | NY | Mettel Field to Buffalo Niagara International |
| Bowling Green Warren County Regional (BWG) | Bowling Green | KY | Mettel Field to Bowling Green Warren County Regional |
| Arkansas International (BYH) | Blytheville | AR | Mettel Field to Arkansas International |
| Wexford County (CAD) | Cadillac | MI | Mettel Field to Wexford County |
| Akron/Canton Regional (CAK) | Akron | OH | Mettel Field to Akron/Canton Regional |
| Greater Cumberland Regional (CBE) | Cumberland | MD | Mettel Field to Greater Cumberland Regional |
| Oconee County Regional (CEU) | Clemson | SC | Mettel Field to Oconee County Regional |
| Kyle-Oakley Field (CEY) | Murray | KY | Mettel Field to Kyle-Oakley Field |
| Cuyahoga County (CGF) | Cleveland | OH | Mettel Field to Cuyahoga County |
| Cape Girardeau Regional (CGI) | Cape Girardeau | MO | Mettel Field to Cape Girardeau Regional |
| Lovell Field (CHA) | Chattanooga | TN | Mettel Field to Lovell Field |
| Charlottesville Albemarle (CHO) | Charlottesville | VA | Mettel Field to Charlottesville Albemarle |
| The Eastern Iowa (CID) | Cedar Rapids | IA | Mettel Field to The Eastern Iowa |
| Cairo Regional (CIR) | Cairo | IL | Mettel Field to Cairo Regional |
| North Central West Virginia (CKB) | Clarksburg | WV | Mettel Field to North Central West Virginia |
| Outlaw Field (CKV) | Clarksville | TN | Mettel Field to Outlaw Field |
| Cleveland/Hopkins International (CLE) | Cleveland | OH | Mettel Field to Cleveland/Hopkins International |
| Clintonville Municipal (CLI) | Clintonville | WI | Mettel Field to Clintonville Municipal |
| Charlotte Douglas International (CLT) | Charlotte | NC | Mettel Field to Charlotte Douglas International |
| Columbus Municipal (CLU) | Columbus | IN | Mettel Field to Columbus Municipal |
| John Glenn International (CMH) | Columbus | OH | Mettel Field to John Glenn International |
| University of Illinois-Willard (CMI) | Champaign/Urbana | IL | Mettel Field to University of Illinois-Willard |
| Columbia Regional (COU) | Columbia | MO | Mettel Field to Columbia Regional |
| St Louis Downtown (CPS) | Cahokia/St Louis | IL | Mettel Field to St Louis Downtown |
| Yeager (CRW) | Charleston | WV | Mettel Field to Yeager |
| Roscoe Turner (CRX) | Corinth | MS | Mettel Field to Roscoe Turner |
| Crossville Memorial/Whitson Field (CSV) | Crossville | TN | Mettel Field to Crossville Memorial/Whitson Field |
| Cincinnati Northern Kentucky International (CVG) | Cincinnati | OH | Mettel Field to Cincinnati Northern Kentucky International |
| Clinton Municipal (CWI) | Clinton | IA | Mettel Field to Clinton Municipal |
| Burlington Executive (CZB) | Burlington | ON | Mettel Field to Burlington Executive |
| Danville Regional (DAN) | Danville | VA | Mettel Field to Danville Regional |
| Dayton International James M Cox (DAY) | Dayton | OH | Mettel Field to Dayton International James M Cox |
| Dubuque Regional (DBQ) | Dubuque | IA | Mettel Field to Dubuque Regional |
| Pryor Field Regional (DCU) | Decatur | AL | Mettel Field to Pryor Field Regional |
| Decatur (DEC) | Decatur | IL | Mettel Field to Decatur |
| Coleman A Young Municipal (DET) | Detroit | MI | Mettel Field to Coleman A Young Municipal |
| Defiance Memorial (DFI) | Defiance | OH | Mettel Field to Defiance Memorial |
| Chautauqua County/Dunkirk (DKK) | Dunkirk | NY | Mettel Field to Chautauqua County/Dunkirk |
| Dalton Municipal (DNN) | Dalton | GA | Mettel Field to Dalton Municipal |
| Vermilion Regional (DNV) | Danville | IL | Mettel Field to Vermilion Regional |
| Dupage (DPA) | Chicago | IL | Mettel Field to Dupage |
| Detroit Metro Wayne County (DTW) | Detroit | MI | Mettel Field to Detroit Metro Wayne County |
| Dunnville (DU9) | Dunnville | ON | Mettel Field to Dunnville |
| Dubois Regional (DUJ) | DuBois | PA | Mettel Field to Dubois Regional |
| Davenport Municipal (DVN) | Davenport | IA | Mettel Field to Davenport Municipal |
| Iosco County (ECA) | East Tawas | MI | Mettel Field to Iosco County |
| Elkhart Municipal (EKI) | Elkhart | IN | Mettel Field to Elkhart Municipal |
| Elkins/Randolph County (EKN) | Elkins | WV | Mettel Field to Elkins/Randolph County |
| Addington Field (EKX) | Elizabethtown | KY | Mettel Field to Addington Field |
| Centralia Municipal (ENL) | Centralia | IL | Mettel Field to Centralia Municipal |
| Kenosha Regional (ENW) | Kenosha | WI | Mettel Field to Kenosha Regional |
| Keokuk Municipal (EOK) | Keokuk | IA | Mettel Field to Keokuk Municipal |
| Erie International/Tom Ridge Field (ERI) | Erie | PA | Mettel Field to Erie International/Tom Ridge Field |
| West Bend Municipal (ETB) | West Bend | WI | Mettel Field to West Bend Municipal |
| Evansville Regional (EVV) | Evansville | IN | Mettel Field to Evansville Regional |
| Farmington Regional (FAM) | Farmington | MO | Mettel Field to Farmington Regional |
| Findlay (FDY) | Findlay | OH | Mettel Field to Findlay |
| Albertus (FEP) | Freeport | IL | Mettel Field to Albertus |
| Fairfield Municipal (FFL) | Fairfield | IA | Mettel Field to Fairfield Municipal |
| Capital City (FFT) | Frankfort | KY | Mettel Field to Capital City |
| Venango Regional (FKL) | Franklin | PA | Mettel Field to Venango Regional |
| Fond Du Lac County (FLD) | Fond Du Lac | WI | Mettel Field to Fond Du Lac County |
| Fort Madison Municipal (FMS) | Fort Madison | IA | Mettel Field to Fort Madison Municipal |
| Bishop International (FNT) | Flint | MI | Mettel Field to Bishop International |
| French Lick Municipal (FRH) | French Lick | IN | Mettel Field to French Lick Municipal |
| Front Royal-Warren County (FRR) | Front Royal | VA | Mettel Field to Front Royal-Warren County |
| Fort Wayne International (FWA) | Fort Wayne | IN | Mettel Field to Fort Wayne International |
| Fayetteville Municipal (FYM) | Fayetteville | TN | Mettel Field to Fayetteville Municipal |
| Northeast Alabama Regional (GAD) | Gadsden | AL | Mettel Field to Northeast Alabama Regional |
| Galesburg Municipal (GBG) | Galesburg | IL | Mettel Field to Galesburg Municipal |
| Greeneville-Greene County Municipal (GCY) | Greeneville | TN | Mettel Field to Greeneville-Greene County Municipal |
| Donaldson Field (GDC) | Greenville | SC | Mettel Field to Donaldson Field |
| Gladwin Zettel Memorial (GDW) | Gladwin | MI | Mettel Field to Gladwin Zettel Memorial |
| Centerville Municipal (GHM) | Centerville | TN | Mettel Field to Centerville Municipal |
| Gatlinburg-Pigeon Forge (GKT) | Sevierville | TN | Mettel Field to Gatlinburg-Pigeon Forge |
| Gaylord Regional (GLR) | Gaylord | MI | Mettel Field to Gaylord Regional |
| Glasgow Municipal (GLW) | Glasgow | KY | Mettel Field to Glasgow Municipal |
| Greenville Downtown (GMU) | Greenville | SC | Mettel Field to Greenville Downtown |
| Galion Municipal (GQQ) | Galion | OH | Mettel Field to Galion Municipal |
| Austin Straubel International (GRB) | Green Bay | WI | Mettel Field to Austin Straubel International |
| Greenville (GRE) | Greenville | IL | Mettel Field to Greenville |
| Gerald R Ford International (GRR) | Grand Rapids | MI | Mettel Field to Gerald R Ford International |
| Goshen Municipal (GSH) | Goshen | IN | Mettel Field to Goshen Municipal |
| Piedmont Triad International (GSO) | Greensboro | NC | Mettel Field to Piedmont Triad International |
| Greenville Spartanburg International (GSP) | Greer | SC | Mettel Field to Greenville Spartanburg International |
| Grissom Aeroplex/Arb (GUS) | Peru | IN | Mettel Field to Grissom Aeroplex/Arb |
| Gordonsville Municipal Airport (GVE) | Gordonsville | VA | Mettel Field to Gordonsville Municipal Airport |
| Lee Gilmer Memorial (GVL) | Gainesville | GA | Mettel Field to Lee Gilmer Memorial |
| Gary/Chicago International (GYY) | GARY | IN | Mettel Field to Gary/Chicago International |
| Three Rivers Municipal Dr Haines (HAI) | Three Rivers | MI | Mettel Field to Three Rivers Municipal Dr Haines |
| Richard A Henson Field/Hagerstown Regional (HGR) | Hagerstown | MD | Mettel Field to Richard A Henson Field/Hagerstown Regional |
| Blytheville Municipal (HKA) | Blytheville | AR | Mettel Field to Blytheville Municipal |
| Hickory Regional (HKY) | Hickory | NC | Mettel Field to Hickory Regional |
| Wheeling Ohio County (HLG) | Wheeling | WV | Mettel Field to Wheeling Ohio County |
| Park Township (HLM) | Holland | MI | Mettel Field to Park Township |
| Huntingburg (HNB) | Huntingburg | IN | Mettel Field to Huntingburg |
| Harrisburg-Raleigh (HSB) | Harrisburg | IL | Mettel Field to Harrisburg-Raleigh |
| Ingalls Field (HSP) | Hot Springs | VA | Mettel Field to Ingalls Field |
| Huntsville International/Carl T Jones Field (HSV) | Huntsville | AL | Mettel Field to Huntsville International/Carl T Jones Field |
| Roscommon County - Blodgett Memorial (HTL) | Houghton Lake | MI | Mettel Field to Roscommon County - Blodgett Memorial |
| Tri-State Milton J Ferguson Field (HTS) | Huntington | WV | Mettel Field to Tri-State Milton J Ferguson Field |
| Lawrence County Airpark (HTW) | Chesapeake | OH | Mettel Field to Lawrence County Airpark |
| Terre Haute Regional (HUF) | Terre Haute | IN | Mettel Field to Terre Haute Regional |
| Niagara Falls International (IAG) | Niagara Falls | NY | Mettel Field to Niagara Falls International |
| Indiana County/Jimmy Stewart Field (IDI) | Indiana | PA | Mettel Field to Indiana County/Jimmy Stewart Field |
| Jacksonville Municipal (IJX) | Jacksonville | IL | Mettel Field to Jacksonville Municipal |
| Wilkes County (IKB) | N Wilkesboro | NC | Mettel Field to Wilkes County |
| Greater Kankakee (IKK) | Kankakee | IL | Mettel Field to Greater Kankakee |
| Wilmington Airpark (ILN) | Wilmington | OH | Mettel Field to Wilmington Airpark |
| Indianapolis International (IND) | Indianapolis | IN | Mettel Field to Indianapolis International |
| Smith Reynolds (INT) | Winston-Salem | NC | Mettel Field to Smith Reynolds |
| Iowa City Municipal (IOW) | Iowa City | IA | Mettel Field to Iowa City Municipal |
| Kirksville Regional (IRK) | Kirksville | MO | Mettel Field to Kirksville Regional |
| Kirsch Municipal (IRS) | Sturgis | MI | Mettel Field to Kirsch Municipal |
| Alexander Field South Wood County (ISW) | Wisconsin Rapids | WI | Mettel Field to Alexander Field South Wood County |
| Jonesboro Municipal (JBR) | Jonesboro | AR | Mettel Field to Jonesboro Municipal |
| Jefferson City Memorial (JEF) | Jefferson City | MO | Mettel Field to Jefferson City Memorial |
| Northeast Ohio Regional (JFN) | Ashtabula | OH | Mettel Field to Northeast Ohio Regional |
| Chautauqua County/Jamestown (JHW) | Jamestown | NY | Mettel Field to Chautauqua County/Jamestown |
| Joliet Regional Airport (JOT) | Joliet | IL | Mettel Field to Joliet Regional Airport |
| John Murtha Johnstown/Cambria County (JST) | Johnstown | PA | Mettel Field to John Murtha Johnstown/Cambria County |
| Souther Wisconsin Regional (JVL) | Janesville | WI | Mettel Field to Souther Wisconsin Regional |
| Jackson County/Reynolds Field (JXN) | Jackson | MI | Mettel Field to Jackson County/Reynolds Field |
| Kentland Municipal (KKT) | Kentland | IN | Mettel Field to Kentland Municipal |
| Kennett Memorial (KNT) | Kennett | MO | Mettel Field to Kennett Memorial |
| Purdue University (LAF) | Lafayette | IN | Mettel Field to Purdue University |
| Capital Region International (LAN) | Lansing | MI | Mettel Field to Capital Region International |
| Arnold Palmer Regional (LBE) | Latrobe | PA | Mettel Field to Arnold Palmer Regional |
| Rickenbacker International (LCK) | Columbus | OH | Mettel Field to Rickenbacker International |
| Mason County (LDM) | Ludington | MI | Mettel Field to Mason County |
| Blue Grass (LEX) | Lexington | KY | Mettel Field to Blue Grass |
| Willoughby Lost Nation Municipal (LNN) | Willoughby | OH | Mettel Field to Willoughby Lost Nation Municipal |
| Lonesome Pine (LNP) | Wise | VA | Mettel Field to Lonesome Pine |
| Tri-County Regional (LNR) | Lone Rock | WI | Mettel Field to Tri-County Regional |
| Lewis University Chicago Romeoville (LOT) | Chicago/Romeoville | IL | Mettel Field to Lewis University Chicago Romeoville |
| Bowman Field (LOU) | Louisville | KY | Mettel Field to Bowman Field |
| Louisa County/Freeman Field (LOW) | Louisa | VA | Mettel Field to Louisa County/Freeman Field |
| London Corbin Magee Field (LOZ) | London | KY | Mettel Field to London Corbin Magee Field |
| La Porte Municipal (LPO) | La Porte | IN | Mettel Field to La Porte Municipal |
| Pickens County (LQK) | Pickens | SC | Mettel Field to Pickens County |
| Cincinnati Municipal Lunken (LUK) | Cincinnati | OH | Mettel Field to Cincinnati Municipal Lunken |
| Greenbrier Valley (LWB) | Lewisburg | WV | Mettel Field to Greenbrier Valley |
| Lawrenceville-Vincennes International (LWV) | Lawrenceville | IL | Mettel Field to Lawrenceville-Vincennes International |
| Lynchburg Regional/Preston Glenn Field (LYH) | Lynchburg | VA | Mettel Field to Lynchburg Regional/Preston Glenn Field |
| Malden Regional (MAW) | Malden | MO | Mettel Field to Malden Regional |
| Manistee County-Blacker (MBL) | Manistee | MI | Mettel Field to Manistee County-Blacker |
| Mbs International (MBS) | Saginaw | MI | Mettel Field to Mbs International |
| Omar N Bradley (MBY) | Moberly | MO | Mettel Field to Omar N Bradley |
| Southern Illinois (MDH) | Carbondale/Murphysboro | IL | Mettel Field to Southern Illinois |
| Madison Municipal (MDN) | Madison | IN | Mettel Field to Madison Municipal |
| Chicago Midway International (MDW) | Chicago | IL | Mettel Field to Chicago Midway International |
| Port Meadville (MEJ) | Meadville | PA | Mettel Field to Port Meadville |
| Mansfield Lahm Regional (MFD) | Mansfield | OH | Mettel Field to Mansfield Lahm Regional |
| Michigan City Municipal-Phillips Field (MGC) | Michigan City | IN | Mettel Field to Michigan City Municipal-Phillips Field |
| Morgantown Municipal Walter L Bill Hart Field (MGW) | Morgantown | WV | Mettel Field to Morgantown Municipal Walter L Bill Hart Field |
| Dayton-Wright Brothers (MGY) | Dayton | OH | Mettel Field to Dayton-Wright Brothers |
| Milwaukee Mitchell International (MKE) | Milwaukee | WI | Mettel Field to Milwaukee Mitchell International |
| Muskegon County (MKG) | Muskegon | MI | Mettel Field to Muskegon County |
| Mckellar Sipes Regional (MKL) | Jackson | TN | Mettel Field to Mckellar Sipes Regional |
| Quad City International (MLI) | Moline | IL | Mettel Field to Quad City International |
| Mcminn County (MMI) | Athens | TN | Mettel Field to Mcminn County |
| Menominee-Marinette Twin County (MNM) | Menominee | MI | Mettel Field to Menominee-Marinette Twin County |
| Marion Municipal (MNN) | Marion | OH | Mettel Field to Marion Municipal |
| Mount Pleasant Municipal (MOP) | Mount Pleasant | MI | Mettel Field to Mount Pleasant Municipal |
| Moore-Murrell (MOR) | Morristown | TN | Mettel Field to Moore-Murrell |
| Mount Pleasant Municipal (MPZ) | Mount Pleasant | IA | Mettel Field to Mount Pleasant Municipal |
| Macomb Municipal (MQB) | Macomb | IL | Mettel Field to Macomb Municipal |
| Smyrna (MQY) | Smyrna | TN | Mettel Field to Smyrna |
| Eastern West Virginia Regional/Shepherd Field (MRB) | Martinsburg | WV | Mettel Field to Eastern West Virginia Regional/Shepherd Field |
| Maury County (MRC) | Columbia | TN | Mettel Field to Maury County |
| Foothills Regional (MRN) | Morganton | NC | Mettel Field to Foothills Regional |
| Northwest Alabama Regional (MSL) | Muscle Shoals | AL | Mettel Field to Northwest Alabama Regional |
| Truax Field/Dane County Regional (MSN) | Madison | WI | Mettel Field to Truax Field/Dane County Regional |
| Coles County Memorial (MTO) | Mattoon/Charleston | IL | Mettel Field to Coles County Memorial |
| Manitowoc County (MTW) | Manitowoc | WI | Mettel Field to Manitowoc County |
| Muscatine Municipal (MUT) | Muscatine | IA | Mettel Field to Muscatine Municipal |
| Mount Vernon (MVN) | Mount Vernon | IL | Mettel Field to Mount Vernon |
| Williamson County Rgnl (MWA) | Marion | IL | Mettel Field to Williamson County Rgnl |
| Lawrence J Timmerman (MWC) | Milwaukee | WI | Mettel Field to Lawrence J Timmerman |
| Manila Municipal (MXA) | Manila | AR | Mettel Field to Manila Municipal |
| Monticello Regional (MXO) | Monticello | IA | Mettel Field to Monticello Regional |
| Marion Municipal (MZZ) | Marion | IN | Mettel Field to Marion Municipal |
| Jerry Tyler Memorial (NLE) | Niles | MI | Mettel Field to Jerry Tyler Memorial |
| Niagara Central (NQ3) | Welland | ON | Mettel Field to Niagara Central |
| Millington Regional Jetport (NQA) | Millington | TN | Mettel Field to Millington Regional Jetport |
| Garrett County (ODM) | Oakland | MD | Mettel Field to Garrett County |
| Kokomo Municipal (OKK) | Kokomo | IN | Mettel Field to Kokomo Municipal |
| Cattaraugus County-Olean Municipal (OLE) | Olean | NY | Mettel Field to Cattaraugus County-Olean Municipal |
| Olney-Noble (OLY) | Olney-Noble | IL | Mettel Field to Olney-Noble |
| Oskaloosa Municipal (OOA) | Oskaloosa | IA | Mettel Field to Oskaloosa Municipal |
| Chicago O'hare International (ORD) | Chicago | IL | Mettel Field to Chicago O'hare International |
| Oscoda-Wurtsmith (OSC) | Oscoda | MI | Mettel Field to Oscoda-Wurtsmith |
| Wittman Regional (OSH) | Oshkosh | WI | Mettel Field to Wittman Regional |
| Ohio State University (OSU) | Columbus | OH | Mettel Field to Ohio State University |
| Ottumwa Regional (OTM) | Ottumwa | IA | Mettel Field to Ottumwa Regional |
| Owensboro-Daviess County Regional (OWB) | Owensboro | KY | Mettel Field to Owensboro-Daviess County Regional |
| Barkley Regional (PAH) | Paducah | KY | Mettel Field to Barkley Regional |
| Prairie Du Chien Municipal (PCD) | Prairie Duchien | WI | Mettel Field to Prairie Du Chien Municipal |
| Cambridge/Reid's Field (PE4) | Cambridge | ON | Mettel Field to Cambridge/Reid's Field |
| Grant County (PGC) | Petersburg | WV | Mettel Field to Grant County |
| Paragould/Kirk Field (PGR) | Paragould | AR | Mettel Field to Paragould/Kirk Field |
| Harry Clever Field (PHD) | New Philadelphia | OH | Mettel Field to Harry Clever Field |
| St Clair County International (PHN) | Port Huron | MI | Mettel Field to St Clair County International |
| Henry County (PHT) | Paris | TN | Mettel Field to Henry County |
| Gen Wayne A Downing Peoria International (PIA) | Peoria | IL | Mettel Field to Gen Wayne A Downing Peoria International |
| Pittsburgh International (PIT) | Pittsburgh | PA | Mettel Field to Pittsburgh International |
| Mid Ohio Valley Regional (PKB) | Parkersburg | WV | Mettel Field to Mid Ohio Valley Regional |
| Plymouth Municipal (PLY) | Plymouth | IN | Mettel Field to Plymouth Municipal |
| Greater Portsmouth Regional (PMH) | Portsmouth | OH | Mettel Field to Greater Portsmouth Regional |
| Poplar Bluff Municipal (POF) | Poplar Bluff | MO | Mettel Field to Poplar Bluff Municipal |
| Wingham/Richard W Levan (PR7) | Wingham | ON | Mettel Field to Wingham/Richard W Levan |
| Mid-State (PSB) | Philipsburg | PA | Mettel Field to Mid-State |
| New River Valley (PSK) | Dublin | VA | Mettel Field to New River Valley |
| Oakland County International (PTK) | Pontiac | MI | Mettel Field to Oakland County International |
| Chicago Executive (PWK) | Chicago | IL | Mettel Field to Chicago Executive |
| Wilgrove Air Park (QWG) | Charlotte | NC | Mettel Field to Wilgrove Air Park |
| Batten International (RAC) | Racine | WI | Mettel Field to Batten International |
| Fulton County (RCR) | Rochester | IN | Mettel Field to Fulton County |
| Nartron Field (RCT) | Reed City | MI | Mettel Field to Nartron Field |
| Mifflin County (RED) | Reedsville | PA | Mettel Field to Mifflin County |
| Chicago/Rockford International (RFD) | Rockford | IL | Mettel Field to Chicago/Rockford International |
| Rock Hill/York County/Bryant Field (RKH) | Rock Hill | SC | Mettel Field to Rock Hill/York County/Bryant Field |
| Rockwood Municipal (RKW) | Rockwood | TN | Mettel Field to Rockwood Municipal |
| Rolla Downtown (RLA) | Rolla | MO | Mettel Field to Rolla Downtown |
| Richard B Russell Regional/J H Towers Field (RMG) | Rome | GA | Mettel Field to Richard B Russell Regional/J H Towers Field |
| Warren County Memorial (RNC) | McMinnville | TN | Mettel Field to Warren County Memorial |
| Jasper County (RNZ) | Rensselaer | IN | Mettel Field to Jasper County |
| Roanoke Regional/Woodrum Field (ROA) | Roanoke | VA | Mettel Field to Roanoke Regional/Woodrum Field |
| Sparta Community - Hunter Field (SAR) | Sparta | IL | Mettel Field to Sparta Community - Hunter Field |
| Sheboygan County Memorial (SBM) | Sheboygan | WI | Mettel Field to Sheboygan County Memorial |
| South Bend International (SBN) | South Bend | IN | Mettel Field to South Bend International |
| University Park (SCE) | State College | PA | Mettel Field to University Park |
| Louisville International/Standiford Field (SDF) | Louisville | KY | Mettel Field to Louisville International/Standiford Field |
| Freeman Municipal (SER) | Seymour | IN | Mettel Field to Freeman Municipal |
| Springfield/Beckley Municipal (SGH) | Springfield | OH | Mettel Field to Springfield/Beckley Municipal |
| Shenandoah Valley Regional (SHD) | Staunton | VA | Mettel Field to Shenandoah Valley Regional |
| Sikeston Memorial Municipal (SIK) | Sikeston | MO | Mettel Field to Sikeston Memorial Municipal |
| Sullivan County (SIV) | Sullivan | IN | Mettel Field to Sullivan County |
| Salem-Leckrone (SLO) | Salem | IL | Mettel Field to Salem-Leckrone |
| Smith Field (SMD) | Fort Wayne | IN | Mettel Field to Smith Field |
| Lake Cumberland Regional (SME) | Somerset | KY | Mettel Field to Lake Cumberland Regional |
| Spartanburg Downtown Memorial (SPA) | Spartanburg | SC | Mettel Field to Spartanburg Downtown Memorial |
| Abraham Lincoln Capital (SPI) | Springfield | IL | Mettel Field to Abraham Lincoln Capital |
| Whiteside Co/Jos H Bittorf Field (SQI) | Sterling/Rock Falls | IL | Mettel Field to Whiteside Co/Jos H Bittorf Field |
| Mid-Carolina Regional (SRW) | Salisbury | NC | Mettel Field to Mid-Carolina Regional |
| Stevens Point Municipal (STE) | Stevens Point | WI | Mettel Field to Stevens Point Municipal |
| Lambert St Louis International (STL) | St Louis | MO | Mettel Field to Lambert St Louis International |
| St Marys Municipal (STQ) | St Marys | PA | Mettel Field to St Marys Municipal |
| Door County Cherryland (SUE) | Sturgeon Bay | WI | Mettel Field to Door County Cherryland |
| Spirit of St Louis (SUS) | St Louis | MO | Mettel Field to Spirit of St Louis |
| Statesville Regional (SVH) | Statesville | NC | Mettel Field to Statesville Regional |
| Shelbyville Municipal/Bomar Field (SYI) | Shelbyville | TN | Mettel Field to Shelbyville Municipal/Bomar Field |
| Waynesville St Robert Regional/Forney Field (TBN) | Fort Leonard Wood | MO | Mettel Field to Waynesville St Robert Regional/Forney Field |
| Toledo Executive (TDZ) | Toledo | OH | Mettel Field to Toledo Executive |
| Tullahoma Regional/William Northern Field (THA) | Tullahoma | TN | Mettel Field to Tullahoma Regional/William Northern Field |
| Toccoa Regional Letourneau Field (TOC) | Toccoa | GA | Mettel Field to Toccoa Regional Letourneau Field |
| Toledo Express (TOL) | Toledo | OH | Mettel Field to Toledo Express |
| Tri-Cities Regional, TN/VA (TRI) | Bristol/Johnson/Kingsport | TN | Mettel Field to Tri-Cities Regional, TN/VA |
| Cherry Capital (TVC) | Traverse City | MI | Mettel Field to Cherry Capital |
| Mcghee Tyson (TYS) | Knoxville | TN | Mettel Field to Mcghee Tyson |
| Tuscola Area (TZC) | Caro | MI | Mettel Field to Tuscola Area |
| Everett-Stewart Regional (UCY) | Union City | TN | Mettel Field to Everett-Stewart Regional |
| Waukesha County (UES) | Waukesha | WI | Mettel Field to Waukesha County |
| Chicago/Waukegan Regional (UGN) | Chicago | IL | Mettel Field to Chicago/Waukegan Regional |
| Baldwin Field/Quincy Regional (UIN) | Quincy | IL | Mettel Field to Baldwin Field/Quincy Regional |
| Dodge County (UNU) | Juneau | WI | Mettel Field to Dodge County |
| Franklin County (UOS) | Sewanee | TN | Mettel Field to Franklin County |
| Union County Troy Shelton Field (USC) | Union | SC | Mettel Field to Union County Troy Shelton Field |
| Rolla National (VIH) | Rolla/Vichy | MO | Mettel Field to Rolla National |
| Virginia Highlands (VJI) | Abingdon | VA | Mettel Field to Virginia Highlands |
| Vandalia Municipal (VLA) | Vandalia | IL | Mettel Field to Vandalia Municipal |
| Porter County Regional (VPZ) | Valparaiso | IN | Mettel Field to Porter County Regional |
| Walter A Duncan Field/Illinois Valley Regional (VYS) | Peru | IL | Mettel Field to Walter A Duncan Field/Illinois Valley Regional |
| Greene County (WAY) | Waynesburg | PA | Mettel Field to Greene County |
| West Branch Community (WBK) | West Branch | MI | Mettel Field to West Branch Community |
| Roben-Hood (WBR) | Big Rapids | MI | Mettel Field to Roben-Hood |
| Winchester Regional (WGO) | Winchester | VA | Mettel Field to Winchester Regional |
| Washington County (WSG) | Washington | PA | Mettel Field to Washington County |
| Grand Geneva Resort (XES) | Lake Geneva | WI | Mettel Field to Grand Geneva Resort |
| Brantford Municipal (XFV) | Brantford | ON | Mettel Field to Brantford Municipal |
| Grimsby Airpark (XGY) | Grimsby | ON | Mettel Field to Grimsby Airpark |
| Brampton (XPN) | Brampton | ON | Mettel Field to Brampton |
| Centralia/James T Field Memorial (YCE) | Centralia | ON | Mettel Field to Centralia/James T Field Memorial |
| Chatham-Kent Municipal (YCK) | Chatham | ON | Mettel Field to Chatham-Kent Municipal |
| Niagara District (YCM) | St Catharines | ON | Mettel Field to Niagara District |
| Goderich Municipal (YGD) | Goderich | ON | Mettel Field to Goderich Municipal |
| John C Munro Hamilton International (YHM) | Hamilton | ON | Mettel Field to John C Munro Hamilton International |
| Saugeen Municipal (YHS) | Hanover | ON | Mettel Field to Saugeen Municipal |
| Willow Run (YIP) | Detroit | MI | Mettel Field to Willow Run |
| Kincardine (YKD) | Kincardine | ON | Mettel Field to Kincardine |
| Youngstown/Warren Regional (YNG) | Youngstown | OH | Mettel Field to Youngstown/Warren Regional |
| Owen Sound - Billy Bishop Regional (YOS) | Owen Sound | ON | Mettel Field to Owen Sound - Billy Bishop Regional |
| Pelee Island (YPT) | Pelee Island | ON | Mettel Field to Pelee Island |
| Windsor (YQG) | Windsor | ON | Mettel Field to Windsor |
| St Thomas Municipal (YQS) | St Thomas | ON | Mettel Field to St Thomas Municipal |
| Stratford Municipal (YSA) | Stratford | ON | Mettel Field to Stratford Municipal |
| Billy Bishop Toronto City (YTZ) | Toronto | ON | Mettel Field to Billy Bishop Toronto City |
| London (YXU) | London | ON | Mettel Field to London |
| Toronto Lester B Pearson International (YYZ) | Toronto | ON | Mettel Field to Toronto Lester B Pearson International |
| Sarnia/Chris Hadfield (YZR) | Sarnia | ON | Mettel Field to Sarnia/Chris Hadfield |
| Zanesville Municipal (ZZV) | Zanesville | OH | Mettel Field to Zanesville Municipal |
