Antrim County (ACB) | Bellaire | MI | Walter A Duncan Field Illinois Valley Regional to Antrim County |
Lenawee County (ADG) | Adrian | MI | Walter A Duncan Field Illinois Valley Regional to Lenawee County |
Albert Lea Municipal (AEL) | Albert Lea | MN | Walter A Duncan Field Illinois Valley Regional to Albert Lea Municipal |
Amery Municipal (AHH) | Amery | WI | Walter A Duncan Field Illinois Valley Regional to Amery Municipal |
Anderson Municipal-Darlington Field (AID) | Anderson | IN | Walter A Duncan Field Illinois Valley Regional to Anderson Municipal-Darlington Field |
Atlantic Municipal (AIO) | Atlantic | IA | Walter A Duncan Field Illinois Valley Regional to Atlantic Municipal |
Lee C Fine Memorial (AIZ) | KAISER/LAKE OZARK | MO | Walter A Duncan Field Illinois Valley Regional to Lee C Fine Memorial |
Akron Fulton International (AKC) | Akron | OH | Walter A Duncan Field Illinois Valley Regional to Akron Fulton International |
St Louis Regional (ALN) | Alton | IL | Walter A Duncan Field Illinois Valley Regional to St Louis Regional |
Waterloo Regional (ALO) | Waterloo | IA | Walter A Duncan Field Illinois Valley Regional to Waterloo Regional |
Gratiot Community (AMN) | Alma | MI | Walter A Duncan Field Illinois Valley Regional to Gratiot Community |
Ames Municipal (AMW) | Ames | IA | Walter A Duncan Field Illinois Valley Regional to Ames Municipal |
Tri-State Steuben County (ANQ) | Angola | IN | Walter A Duncan Field Illinois Valley Regional to Tri-State Steuben County |
Lima Allen County (AOH) | Lima | OH | Walter A Duncan Field Illinois Valley Regional to Lima Allen County |
Alpena County Regional (APN) | Alpena | MI | Walter A Duncan Field Illinois Valley Regional to Alpena County Regional |
Ann Arbor Municipal (ARB) | Ann Arbor | MI | Walter A Duncan Field Illinois Valley Regional to Ann Arbor Municipal |
Walnut Ridge (ARG) | Walnut Ridge | AR | Walter A Duncan Field Illinois Valley Regional to Walnut Ridge |
Lakeland/Noble F. Lee Memorial Field (ARV) | Minocqua | WI | Walter A Duncan Field Illinois Valley Regional to Lakeland/Noble F. Lee Memorial Field |
John F Kennedy Memorial (ASX) | Ashland | WI | Walter A Duncan Field Illinois Valley Regional to John F Kennedy Memorial |
Gordon K Bush Ohio University (ATO) | Athens/Albany | OH | Walter A Duncan Field Illinois Valley Regional to Gordon K Bush Ohio University |
Appleton International (ATW) | Appleton | WI | Walter A Duncan Field Illinois Valley Regional to Appleton International |
Austin Municipal (AUM) | Austin | MN | Walter A Duncan Field Illinois Valley Regional to Austin Municipal |
Wausau Downtown (AUW) | Wausau | WI | Walter A Duncan Field Illinois Valley Regional to Wausau Downtown |
Chicago/Aurora Municipal (AUZ) | Chicago | IL | Walter A Duncan Field Illinois Valley Regional to Chicago/Aurora Municipal |
Algona Municipal (AXG) | Algona | IA | Walter A Duncan Field Illinois Valley Regional to Algona Municipal |
Auglaize County Neil Armstrong (AXV) | Wapakoneta | OH | Walter A Duncan Field Illinois Valley Regional to Auglaize County Neil Armstrong |
Kalamazoo/Battle Creek International (AZO) | Kalamazoo | MI | Walter A Duncan Field Illinois Valley Regional to Kalamazoo/Battle Creek International |
Southwest Michigan Regional (BEH) | Benton Harbor | MI | Walter A Duncan Field Illinois Valley Regional to Southwest Michigan Regional |
Virgil I Grissom Municipal (BFR) | Bedford | IN | Walter A Duncan Field Illinois Valley Regional to Virgil I Grissom Municipal |
Wayne County (BJJ) | Wooster | OH | Walter A Duncan Field Illinois Valley Regional to Wayne County |
Branson (BKG) | Branson | MO | Walter A Duncan Field Illinois Valley Regional to Branson |
Burke Lakefront (BKL) | Cleveland | OH | Walter A Duncan Field Illinois Valley Regional to Burke Lakefront |
MidAmerica St Louis Scott AFB (BLV) | Belleville | IL | Walter A Duncan Field Illinois Valley Regional to MidAmerica St Louis Scott AFB |
Monroe County (BMG) | Bloomington | IN | Walter A Duncan Field Illinois Valley Regional to Monroe County |
Central Illinois Regional at Bloomington Normal (BMI) | Bloomington | IL | Walter A Duncan Field Illinois Valley Regional to Central Illinois Regional at Bloomington Normal |
Nashville International (BNA) | Nashville | TN | Walter A Duncan Field Illinois Valley Regional to Nashville International |
Boone Municipal (BNW) | Boone | IA | Walter A Duncan Field Illinois Valley Regional to Boone Municipal |
Southeast Iowa Regional (BRL) | Burlington | IA | Walter A Duncan Field Illinois Valley Regional to Southeast Iowa Regional |
Samuels Field (BRY) | Bardstown | KY | Walter A Duncan Field Illinois Valley Regional to Samuels Field |
W K Kellogg Regional (BTL) | Battle Creek | MI | Walter A Duncan Field Illinois Valley Regional to W K Kellogg Regional |
Butler Memorial (BUM) | Butler | MO | Walter A Duncan Field Illinois Valley Regional to Butler Memorial |
Bowling Green Warren County Regional (BWG) | Bowling Green | KY | Walter A Duncan Field Illinois Valley Regional to Bowling Green Warren County Regional |
Arkansas International (BYH) | Blytheville | AR | Walter A Duncan Field Illinois Valley Regional to Arkansas International |
Wexford County (CAD) | Cadillac | MI | Walter A Duncan Field Illinois Valley Regional to Wexford County |
Council Bluffs Municipal (CBF) | Council Bluffs | IA | Walter A Duncan Field Illinois Valley Regional to Council Bluffs Municipal |
Northeast Iowa Regional (CCY) | Charles City | IA | Walter A Duncan Field Illinois Valley Regional to Northeast Iowa Regional |
Mettel Field (CEV) | Connersville | IN | Walter A Duncan Field Illinois Valley Regional to Mettel Field |
Kyle-Oakley Field (CEY) | Murray | KY | Walter A Duncan Field Illinois Valley Regional to Kyle-Oakley Field |
Cuyahoga County (CGF) | Cleveland | OH | Walter A Duncan Field Illinois Valley Regional to Cuyahoga County |
Cape Girardeau Regional (CGI) | Cape Girardeau | MO | Walter A Duncan Field Illinois Valley Regional to Cape Girardeau Regional |
The Eastern Iowa (CID) | Cedar Rapids | IA | Walter A Duncan Field Illinois Valley Regional to The Eastern Iowa |
Arthur N Neu (CIN) | Carroll | IA | Walter A Duncan Field Illinois Valley Regional to Arthur N Neu |
Cairo Regional (CIR) | Cairo | IL | Walter A Duncan Field Illinois Valley Regional to Cairo Regional |
Outlaw Field (CKV) | Clarksville | TN | Walter A Duncan Field Illinois Valley Regional to Outlaw Field |
Cleveland/Hopkins International (CLE) | Cleveland | OH | Walter A Duncan Field Illinois Valley Regional to Cleveland/Hopkins International |
Clintonville Municipal (CLI) | Clintonville | WI | Walter A Duncan Field Illinois Valley Regional to Clintonville Municipal |
Columbus Municipal (CLU) | Columbus | IN | Walter A Duncan Field Illinois Valley Regional to Columbus Municipal |
John Glenn International (CMH) | Columbus | OH | Walter A Duncan Field Illinois Valley Regional to John Glenn International |
University of Illinois-Willard (CMI) | Champaign/Urbana | IL | Walter A Duncan Field Illinois Valley Regional to University of Illinois-Willard |
Sparta/Fort Mccoy (CMY) | Sparta | WI | Walter A Duncan Field Illinois Valley Regional to Sparta/Fort Mccoy |
Columbia Regional (COU) | Columbia | MO | Walter A Duncan Field Illinois Valley Regional to Columbia Regional |
St Louis Downtown (CPS) | Cahokia/St Louis | IL | Walter A Duncan Field Illinois Valley Regional to St Louis Downtown |
Creston Municipal (CSQ) | Creston | IA | Walter A Duncan Field Illinois Valley Regional to Creston Municipal |
Canton Municipal (CTK) | Canton | SD | Walter A Duncan Field Illinois Valley Regional to Canton Municipal |
Cincinnati Northern Kentucky International (CVG) | Cincinnati | OH | Walter A Duncan Field Illinois Valley Regional to Cincinnati Northern Kentucky International |
Central Wisconsin (CWA) | Mosinee | WI | Walter A Duncan Field Illinois Valley Regional to Central Wisconsin |
Clinton Municipal (CWI) | Clinton | IA | Walter A Duncan Field Illinois Valley Regional to Clinton Municipal |
Dayton International James M Cox (DAY) | Dayton | OH | Walter A Duncan Field Illinois Valley Regional to Dayton International James M Cox |
Dubuque Regional (DBQ) | Dubuque | IA | Walter A Duncan Field Illinois Valley Regional to Dubuque Regional |
Decatur (DEC) | Decatur | IL | Walter A Duncan Field Illinois Valley Regional to Decatur |
Decorah Municipal (DEH) | Decorah | IA | Walter A Duncan Field Illinois Valley Regional to Decorah Municipal |
Coleman A Young Municipal (DET) | Detroit | MI | Walter A Duncan Field Illinois Valley Regional to Coleman A Young Municipal |
Defiance Memorial (DFI) | Defiance | OH | Walter A Duncan Field Illinois Valley Regional to Defiance Memorial |
Sedalia Regional (DMO) | Sedalia | MO | Walter A Duncan Field Illinois Valley Regional to Sedalia Regional |
Denison Municipal (DNS) | Denison | IA | Walter A Duncan Field Illinois Valley Regional to Denison Municipal |
Vermilion Regional (DNV) | Danville | IL | Walter A Duncan Field Illinois Valley Regional to Vermilion Regional |
Dupage (DPA) | Chicago | IL | Walter A Duncan Field Illinois Valley Regional to Dupage |
Des Moines International (DSM) | Des Moines | IA | Walter A Duncan Field Illinois Valley Regional to Des Moines International |
Detroit Metro Wayne County (DTW) | Detroit | MI | Walter A Duncan Field Illinois Valley Regional to Detroit Metro Wayne County |
Davenport Municipal (DVN) | Davenport | IA | Walter A Duncan Field Illinois Valley Regional to Davenport Municipal |
Chippewa Valley Regional (EAU) | Eau Claire | WI | Walter A Duncan Field Illinois Valley Regional to Chippewa Valley Regional |
Webster City Municipal (EBS) | Webster City | IA | Walter A Duncan Field Illinois Valley Regional to Webster City Municipal |
Iosco County (ECA) | East Tawas | MI | Walter A Duncan Field Illinois Valley Regional to Iosco County |
Jefferson Municipal (EFW) | Jefferson | IA | Walter A Duncan Field Illinois Valley Regional to Jefferson Municipal |
Eagle River Union (EGV) | Eagle River | WI | Walter A Duncan Field Illinois Valley Regional to Eagle River Union |
Elkhart Municipal (EKI) | Elkhart | IN | Walter A Duncan Field Illinois Valley Regional to Elkhart Municipal |
Addington Field (EKX) | Elizabethtown | KY | Walter A Duncan Field Illinois Valley Regional to Addington Field |
Centralia Municipal (ENL) | Centralia | IL | Walter A Duncan Field Illinois Valley Regional to Centralia Municipal |
Kenosha Regional (ENW) | Kenosha | WI | Walter A Duncan Field Illinois Valley Regional to Kenosha Regional |
Keokuk Municipal (EOK) | Keokuk | IA | Walter A Duncan Field Illinois Valley Regional to Keokuk Municipal |
Delta County (ESC) | Escanaba | MI | Walter A Duncan Field Illinois Valley Regional to Delta County |
Estherville Municipal (EST) | Estherville | IA | Walter A Duncan Field Illinois Valley Regional to Estherville Municipal |
West Bend Municipal (ETB) | West Bend | WI | Walter A Duncan Field Illinois Valley Regional to West Bend Municipal |
Evansville Regional (EVV) | Evansville | IN | Walter A Duncan Field Illinois Valley Regional to Evansville Regional |
Farmington Regional (FAM) | Farmington | MO | Walter A Duncan Field Illinois Valley Regional to Farmington Regional |
Faribault Municipal (FBL) | Faribault | MN | Walter A Duncan Field Illinois Valley Regional to Faribault Municipal |
Flying Cloud (FCM) | Minneapolis | MN | Walter A Duncan Field Illinois Valley Regional to Flying Cloud |
Findlay (FDY) | Findlay | OH | Walter A Duncan Field Illinois Valley Regional to Findlay |
Albertus (FEP) | Freeport | IL | Walter A Duncan Field Illinois Valley Regional to Albertus |
Fremont Municipal (FET) | Fremont | NE | Walter A Duncan Field Illinois Valley Regional to Fremont Municipal |
Fairfield Municipal (FFL) | Fairfield | IA | Walter A Duncan Field Illinois Valley Regional to Fairfield Municipal |
Capital City (FFT) | Frankfort | KY | Walter A Duncan Field Illinois Valley Regional to Capital City |
Fond Du Lac County (FLD) | Fond Du Lac | WI | Walter A Duncan Field Illinois Valley Regional to Fond Du Lac County |
Marion County Regional (FLP) | Flippin | AR | Walter A Duncan Field Illinois Valley Regional to Marion County Regional |
Sherman Army Airfield (FLV) | Fort Leavenworth | KS | Walter A Duncan Field Illinois Valley Regional to Sherman Army Airfield |
Fort Madison Municipal (FMS) | Fort Madison | IA | Walter A Duncan Field Illinois Valley Regional to Fort Madison Municipal |
Bishop International (FNT) | Flint | MI | Walter A Duncan Field Illinois Valley Regional to Bishop International |
Fort Dodge Regional (FOD) | Fort Dodge | IA | Walter A Duncan Field Illinois Valley Regional to Fort Dodge Regional |
Topeka Regional (FOE) | Topeka | KS | Walter A Duncan Field Illinois Valley Regional to Topeka Regional |
French Lick Municipal (FRH) | French Lick | IN | Walter A Duncan Field Illinois Valley Regional to French Lick Municipal |
Fairmont Municipal (FRM) | Fairmont | MN | Walter A Duncan Field Illinois Valley Regional to Fairmont Municipal |
Fort Scott Municipal (FSK) | Fort Scott | KS | Walter A Duncan Field Illinois Valley Regional to Fort Scott Municipal |
Fort Wayne International (FWA) | Fort Wayne | IN | Walter A Duncan Field Illinois Valley Regional to Fort Wayne International |
Branson West Municipal - Emerson Field (FWB) | Branson West | MO | Walter A Duncan Field Illinois Valley Regional to Branson West Municipal - Emerson Field |
Forest City Municipal (FXY) | Forest City | IA | Walter A Duncan Field Illinois Valley Regional to Forest City Municipal |
Galesburg Municipal (GBG) | Galesburg | IL | Walter A Duncan Field Illinois Valley Regional to Galesburg Municipal |
Gladwin Zettel Memorial (GDW) | Gladwin | MI | Walter A Duncan Field Illinois Valley Regional to Gladwin Zettel Memorial |
Centerville Municipal (GHM) | Centerville | TN | Walter A Duncan Field Illinois Valley Regional to Centerville Municipal |
Gaylord Regional (GLR) | Gaylord | MI | Walter A Duncan Field Illinois Valley Regional to Gaylord Regional |
Glasgow Municipal (GLW) | Glasgow | KY | Walter A Duncan Field Illinois Valley Regional to Glasgow Municipal |
Galion Municipal (GQQ) | Galion | OH | Walter A Duncan Field Illinois Valley Regional to Galion Municipal |
Austin Straubel International (GRB) | Green Bay | WI | Walter A Duncan Field Illinois Valley Regional to Austin Straubel International |
Greenville (GRE) | Greenville | IL | Walter A Duncan Field Illinois Valley Regional to Greenville |
Gerald R Ford International (GRR) | Grand Rapids | MI | Walter A Duncan Field Illinois Valley Regional to Gerald R Ford International |
Goshen Municipal (GSH) | Goshen | IN | Walter A Duncan Field Illinois Valley Regional to Goshen Municipal |
Grantsburg Muni (GTG) | Grantsburg | WI | Walter A Duncan Field Illinois Valley Regional to Grantsburg Muni |
Grissom Aeroplex/Arb (GUS) | Peru | IN | Walter A Duncan Field Illinois Valley Regional to Grissom Aeroplex/Arb |
Gary/Chicago International (GYY) | GARY | IN | Walter A Duncan Field Illinois Valley Regional to Gary/Chicago International |
Three Rivers Municipal Dr Haines (HAI) | Three Rivers | MI | Walter A Duncan Field Illinois Valley Regional to Three Rivers Municipal Dr Haines |
Butler County Regional-Hogan Field (HAO) | Hamilton | OH | Walter A Duncan Field Illinois Valley Regional to Butler County Regional-Hogan Field |
Blytheville Municipal (HKA) | Blytheville | AR | Walter A Duncan Field Illinois Valley Regional to Blytheville Municipal |
Park Township (HLM) | Holland | MI | Walter A Duncan Field Illinois Valley Regional to Park Township |
Huntingburg (HNB) | Huntingburg | IN | Walter A Duncan Field Illinois Valley Regional to Huntingburg |
Hampton Municipal (HPT) | Hampton | IA | Walter A Duncan Field Illinois Valley Regional to Hampton Municipal |
Harrisburg-Raleigh (HSB) | Harrisburg | IL | Walter A Duncan Field Illinois Valley Regional to Harrisburg-Raleigh |
Roscommon County - Blodgett Memorial (HTL) | Houghton Lake | MI | Walter A Duncan Field Illinois Valley Regional to Roscommon County - Blodgett Memorial |
Tri-State Milton J Ferguson Field (HTS) | Huntington | WV | Walter A Duncan Field Illinois Valley Regional to Tri-State Milton J Ferguson Field |
Humboldt Municipal (HUD) | Humboldt | IA | Walter A Duncan Field Illinois Valley Regional to Humboldt Municipal |
Terre Haute Regional/Hulman Field (HUF) | Terre Haute | IN | Walter A Duncan Field Illinois Valley Regional to Terre Haute Regional/Hulman Field |
Sawyer County (HYR) | Hayward | WI | Walter A Duncan Field Illinois Valley Regional to Sawyer County |
Schenck Field (ICL) | Clarinda | IA | Walter A Duncan Field Illinois Valley Regional to Schenck Field |
Ida Grove Municipal (IDG) | Ida Grove | IA | Walter A Duncan Field Illinois Valley Regional to Ida Grove Municipal |
Iowa Falls Municipal (IFA) | Iowa Falls | IA | Walter A Duncan Field Illinois Valley Regional to Iowa Falls Municipal |
Jacksonville Municipal (IJX) | Jacksonville | IL | Walter A Duncan Field Illinois Valley Regional to Jacksonville Municipal |
Greater Kankakee (IKK) | Kankakee | IL | Walter A Duncan Field Illinois Valley Regional to Greater Kankakee |
Willmar Municipal/John L Rice Field (ILL) | Willmar | MN | Walter A Duncan Field Illinois Valley Regional to Willmar Municipal/John L Rice Field |
Wilmington Airpark (ILN) | Wilmington | OH | Walter A Duncan Field Illinois Valley Regional to Wilmington Airpark |
Ford (IMT) | Iron Mountain | MI | Walter A Duncan Field Illinois Valley Regional to Ford |
Indianapolis International (IND) | Indianapolis | IN | Walter A Duncan Field Illinois Valley Regional to Indianapolis International |
Iowa City Municipal (IOW) | Iowa City | IA | Walter A Duncan Field Illinois Valley Regional to Iowa City Municipal |
Kirksville Regional (IRK) | Kirksville | MO | Walter A Duncan Field Illinois Valley Regional to Kirksville Regional |
Kirsch Municipal (IRS) | Sturgis | MI | Walter A Duncan Field Illinois Valley Regional to Kirsch Municipal |
Schoolcraft County (ISQ) | Manistique | MI | Walter A Duncan Field Illinois Valley Regional to Schoolcraft County |
Alexander Field South Wood County (ISW) | Wisconsin Rapids | WI | Walter A Duncan Field Illinois Valley Regional to Alexander Field South Wood County |
Gogebic-Iron County (IWD) | Ironwood | MI | Walter A Duncan Field Illinois Valley Regional to Gogebic-Iron County |
Jonesboro Municipal (JBR) | Jonesboro | AR | Walter A Duncan Field Illinois Valley Regional to Jonesboro Municipal |
New Century Aircenter (JCI) | Olathe | KS | Walter A Duncan Field Illinois Valley Regional to New Century Aircenter |
Jefferson City Memorial (JEF) | Jefferson City | MO | Walter A Duncan Field Illinois Valley Regional to Jefferson City Memorial |
Joliet Regional Airport (JOT) | Joliet | IL | Walter A Duncan Field Illinois Valley Regional to Joliet Regional Airport |
Souther Wisconsin Regional (JVL) | Janesville | WI | Walter A Duncan Field Illinois Valley Regional to Souther Wisconsin Regional |
Jackson County/Reynolds Field (JXN) | Jackson | MI | Walter A Duncan Field Illinois Valley Regional to Jackson County/Reynolds Field |
Kentland Municipal (KKT) | Kentland | IN | Walter A Duncan Field Illinois Valley Regional to Kentland Municipal |
Kennett Memorial (KNT) | Kennett | MO | Walter A Duncan Field Illinois Valley Regional to Kennett Memorial |
Purdue University (LAF) | Lafayette | IN | Walter A Duncan Field Illinois Valley Regional to Purdue University |
Capital Region International (LAN) | Lansing | MI | Walter A Duncan Field Illinois Valley Regional to Capital Region International |
Rickenbacker International (LCK) | Columbus | OH | Walter A Duncan Field Illinois Valley Regional to Rickenbacker International |
Mason County (LDM) | Ludington | MI | Walter A Duncan Field Illinois Valley Regional to Mason County |
Blue Grass (LEX) | Lexington | KY | Walter A Duncan Field Illinois Valley Regional to Blue Grass |
Lincoln Municipal (LNK) | Lincoln | NE | Walter A Duncan Field Illinois Valley Regional to Lincoln Municipal |
Tri-County Regional (LNR) | Lone Rock | WI | Walter A Duncan Field Illinois Valley Regional to Tri-County Regional |
Lewis University Chicago Romeoville (LOT) | Chicago/Romeoville | IL | Walter A Duncan Field Illinois Valley Regional to Lewis University Chicago Romeoville |
Bowman Field (LOU) | Louisville | KY | Walter A Duncan Field Illinois Valley Regional to Bowman Field |
London Corbin Magee Field (LOZ) | London | KY | Walter A Duncan Field Illinois Valley Regional to London Corbin Magee Field |
La Porte Municipal (LPO) | La Porte | IN | Walter A Duncan Field Illinois Valley Regional to La Porte Municipal |
Le Mars Municipal (LRJ) | Le Mars | IA | Walter A Duncan Field Illinois Valley Regional to Le Mars Municipal |
La Crosse Regional (LSE) | La Crosse | WI | Walter A Duncan Field Illinois Valley Regional to La Crosse Regional |
Cincinnati Municipal Lunken (LUK) | Cincinnati | OH | Walter A Duncan Field Illinois Valley Regional to Cincinnati Municipal Lunken |
Lawrence Municipal (LWC) | Lawrence | KS | Walter A Duncan Field Illinois Valley Regional to Lawrence Municipal |
Lawrenceville-Vincennes International (LWV) | Lawrenceville | IL | Walter A Duncan Field Illinois Valley Regional to Lawrenceville-Vincennes International |
Quentin Aanenson Field (LYV) | Luverne | MN | Walter A Duncan Field Illinois Valley Regional to Quentin Aanenson Field |
Malden Regional (MAW) | Malden | MO | Walter A Duncan Field Illinois Valley Regional to Malden Regional |
Manistee County-Blacker (MBL) | Manistee | MI | Walter A Duncan Field Illinois Valley Regional to Manistee County-Blacker |
Mbs International (MBS) | Saginaw | MI | Walter A Duncan Field Illinois Valley Regional to Mbs International |
Omar N Bradley (MBY) | Moberly | MO | Walter A Duncan Field Illinois Valley Regional to Omar N Bradley |
Mackinac Island (MCD) | Mackinac Island | MI | Walter A Duncan Field Illinois Valley Regional to Mackinac Island |
Kansas City International (MCI) | Kansas City | MO | Walter A Duncan Field Illinois Valley Regional to Kansas City International |
Mason City Municipal (MCW) | Mason City | IA | Walter A Duncan Field Illinois Valley Regional to Mason City Municipal |
Taylor County (MDF) | Medford | WI | Walter A Duncan Field Illinois Valley Regional to Taylor County |
Southern Illinois (MDH) | Carbondale/Murphysboro | IL | Walter A Duncan Field Illinois Valley Regional to Southern Illinois |
Madison Municipal (MDN) | Madison | IN | Walter A Duncan Field Illinois Valley Regional to Madison Municipal |
Chicago Midway International (MDW) | Chicago | IL | Walter A Duncan Field Illinois Valley Regional to Chicago Midway International |
Mansfield Lahm Regional (MFD) | Mansfield | OH | Walter A Duncan Field Illinois Valley Regional to Mansfield Lahm Regional |
Marshfield Municipal (MFI) | Marshfield | WI | Walter A Duncan Field Illinois Valley Regional to Marshfield Municipal |
Michigan City Municipal-Phillips Field (MGC) | Michigan City | IN | Walter A Duncan Field Illinois Valley Regional to Michigan City Municipal-Phillips Field |
Dayton-Wright Brothers (MGY) | Dayton | OH | Walter A Duncan Field Illinois Valley Regional to Dayton-Wright Brothers |
Marshall Memorial Municipal (MHL) | Marshall | MO | Walter A Duncan Field Illinois Valley Regional to Marshall Memorial Municipal |
Crystal (MIC) | Minneapolis | MN | Walter A Duncan Field Illinois Valley Regional to Crystal |
Delaware County Regional (MIE) | Muncie | IN | Walter A Duncan Field Illinois Valley Regional to Delaware County Regional |
Omaha Millard (MIQ) | Omaha | NE | Walter A Duncan Field Illinois Valley Regional to Omaha Millard |
Marshalltown Municipal (MIW) | Marshalltown | IA | Walter A Duncan Field Illinois Valley Regional to Marshalltown Municipal |
Jackson Municipal (MJQ) | Jackson | MN | Walter A Duncan Field Illinois Valley Regional to Jackson Municipal |
Charles B Wheeler Downtown (MKC) | Kansas City | MO | Walter A Duncan Field Illinois Valley Regional to Charles B Wheeler Downtown |
Milwaukee General Mitchell International (MKE) | Milwaukee | WI | Walter A Duncan Field Illinois Valley Regional to Milwaukee General Mitchell International |
Muskegon County (MKG) | Muskegon | MI | Walter A Duncan Field Illinois Valley Regional to Muskegon County |
Mckellar Sipes Regional (MKL) | Jackson | TN | Walter A Duncan Field Illinois Valley Regional to Mckellar Sipes Regional |
Mankato Regional (MKT) | Mankato | MN | Walter A Duncan Field Illinois Valley Regional to Mankato Regional |
Quad City International (MLI) | Moline | IL | Walter A Duncan Field Illinois Valley Regional to Quad City International |
Southwest Minnesota Regional Marshall/Ryan Field (MML) | Marshall | MN | Walter A Duncan Field Illinois Valley Regional to Southwest Minnesota Regional Marshall/Ryan Field |
Menominee-Marinette Twin County (MNM) | Menominee | MI | Walter A Duncan Field Illinois Valley Regional to Menominee-Marinette Twin County |
Marion Municipal (MNN) | Marion | OH | Walter A Duncan Field Illinois Valley Regional to Marion Municipal |
Mount Pleasant Municipal (MOP) | Mount Pleasant | MI | Walter A Duncan Field Illinois Valley Regional to Mount Pleasant Municipal |
Mount Pleasant Municipal (MPZ) | Mount Pleasant | IA | Walter A Duncan Field Illinois Valley Regional to Mount Pleasant Municipal |
Macomb Municipal (MQB) | Macomb | IL | Walter A Duncan Field Illinois Valley Regional to Macomb Municipal |
Sawyer International (MQT) | Marquette | MI | Walter A Duncan Field Illinois Valley Regional to Sawyer International |
Smyrna (MQY) | Smyrna | TN | Walter A Duncan Field Illinois Valley Regional to Smyrna |
Truax Field/Dane County Regional (MSN) | Madison | WI | Walter A Duncan Field Illinois Valley Regional to Truax Field/Dane County Regional |
Minneapolis St Paul International/Wold-Chamberlain (MSP) | Minneapolis | MN | Walter A Duncan Field Illinois Valley Regional to Minneapolis St Paul International/Wold-Chamberlain |
Coles County Memorial (MTO) | Mattoon/Charleston | IL | Walter A Duncan Field Illinois Valley Regional to Coles County Memorial |
Manitowoc County (MTW) | Manitowoc | WI | Walter A Duncan Field Illinois Valley Regional to Manitowoc County |
Muscatine Municipal (MUT) | Muscatine | IA | Walter A Duncan Field Illinois Valley Regional to Muscatine Municipal |
Mount Vernon (MVN) | Mount Vernon | IL | Walter A Duncan Field Illinois Valley Regional to Mount Vernon |
Williamson County Rgnl (MWA) | Marion | IL | Walter A Duncan Field Illinois Valley Regional to Williamson County Rgnl |
Lawrence J Timmerman (MWC) | Milwaukee | WI | Walter A Duncan Field Illinois Valley Regional to Lawrence J Timmerman |
Windom Municipal (MWM) | Windom | MN | Walter A Duncan Field Illinois Valley Regional to Windom Municipal |
Middletown Regional - Hook Field (MWO) | Middletown | OH | Walter A Duncan Field Illinois Valley Regional to Middletown Regional - Hook Field |
Manila Municipal (MXA) | Manila | AR | Walter A Duncan Field Illinois Valley Regional to Manila Municipal |
Monticello Regional (MXO) | Monticello | IA | Walter A Duncan Field Illinois Valley Regional to Monticello Regional |
Marion Municipal (MZZ) | Marion | IN | Walter A Duncan Field Illinois Valley Regional to Marion Municipal |
Jerry Tyler Memorial (NLE) | Niles | MI | Walter A Duncan Field Illinois Valley Regional to Jerry Tyler Memorial |
Slayton Municipal (NSL) | Slayton | MN | Walter A Duncan Field Illinois Valley Regional to Slayton Municipal |
Nevada Municipal (NVD) | Nevada | MO | Walter A Duncan Field Illinois Valley Regional to Nevada Municipal |
L O Simenstad Municipal (OEO) | Osceola | WI | Walter A Duncan Field Illinois Valley Regional to L O Simenstad Municipal |
Johnson County Executive (OJC) | Olathe | KS | Walter A Duncan Field Illinois Valley Regional to Johnson County Executive |
Kokomo Municipal (OKK) | Kokomo | IN | Walter A Duncan Field Illinois Valley Regional to Kokomo Municipal |
Olney-Noble (OLY) | Olney-Noble | IL | Walter A Duncan Field Illinois Valley Regional to Olney-Noble |
Eppley Airfield (OMA) | Omaha | NE | Walter A Duncan Field Illinois Valley Regional to Eppley Airfield |
Winona Municipal-Max Conrad Field (ONA) | Winona | MN | Walter A Duncan Field Illinois Valley Regional to Winona Municipal-Max Conrad Field |
Oskaloosa Municipal (OOA) | Oskaloosa | IA | Walter A Duncan Field Illinois Valley Regional to Oskaloosa Municipal |
Chicago O'hare International (ORD) | Chicago | IL | Walter A Duncan Field Illinois Valley Regional to Chicago O'hare International |
Grand Glaize Osage Beach (OSB) | Osage Beach | MO | Walter A Duncan Field Illinois Valley Regional to Grand Glaize Osage Beach |
Oscoda-Wurtsmith (OSC) | Oscoda | MI | Walter A Duncan Field Illinois Valley Regional to Oscoda-Wurtsmith |
Wittman Regional (OSH) | Oshkosh | WI | Walter A Duncan Field Illinois Valley Regional to Wittman Regional |
Ohio State University (OSU) | Columbus | OH | Walter A Duncan Field Illinois Valley Regional to Ohio State University |
Worthington Municipal (OTG) | Worthington | MN | Walter A Duncan Field Illinois Valley Regional to Worthington Municipal |
Ottumwa Regional (OTM) | Ottumwa | IA | Walter A Duncan Field Illinois Valley Regional to Ottumwa Regional |
Owatonna Degner Regional (OWA) | Owatonna | MN | Walter A Duncan Field Illinois Valley Regional to Owatonna Degner Regional |
Owensboro-Daviess County Regional (OWB) | Owensboro | KY | Walter A Duncan Field Illinois Valley Regional to Owensboro-Daviess County Regional |
Miami University (OXD) | Oxford | OH | Walter A Duncan Field Illinois Valley Regional to Miami University |
Barkley Regional (PAH) | Paducah | KY | Walter A Duncan Field Illinois Valley Regional to Barkley Regional |
Prairie Du Chien Municipal (PCD) | Prairie Duchien | WI | Walter A Duncan Field Illinois Valley Regional to Prairie Du Chien Municipal |
Paragould/Kirk Field (PGR) | Paragould | AR | Walter A Duncan Field Illinois Valley Regional to Paragould/Kirk Field |
St Clair County International (PHN) | Port Huron | MI | Walter A Duncan Field Illinois Valley Regional to St Clair County International |
Henry County (PHT) | Paris | TN | Walter A Duncan Field Illinois Valley Regional to Henry County |
Gen Wayne A Downing Peoria International (PIA) | Peoria | IL | Walter A Duncan Field Illinois Valley Regional to Gen Wayne A Downing Peoria International |
Park Falls Municipal (PKF) | Park Falls | WI | Walter A Duncan Field Illinois Valley Regional to Park Falls Municipal |
M. Graham Clark Downtown (PLK) | Point Lookout | MO | Walter A Duncan Field Illinois Valley Regional to M. Graham Clark Downtown |
Pellston Regional of Emmet County (PLN) | Pellston | MI | Walter A Duncan Field Illinois Valley Regional to Pellston Regional of Emmet County |
Plymouth Municipal (PLY) | Plymouth | IN | Walter A Duncan Field Illinois Valley Regional to Plymouth Municipal |
Greater Portsmouth Regional (PMH) | Portsmouth | OH | Walter A Duncan Field Illinois Valley Regional to Greater Portsmouth Regional |
Poplar Bluff Municipal (POF) | Poplar Bluff | MO | Walter A Duncan Field Illinois Valley Regional to Poplar Bluff Municipal |
Pocahontas Municipal (POH) | Pocahontas | IA | Walter A Duncan Field Illinois Valley Regional to Pocahontas Municipal |
Perry Municipal (PRO) | Perry | IA | Walter A Duncan Field Illinois Valley Regional to Perry Municipal |
Prentice Municipal (PRW) | Prentice | WI | Walter A Duncan Field Illinois Valley Regional to Prentice Municipal |
Oakland County International (PTK) | Pontiac | MI | Walter A Duncan Field Illinois Valley Regional to Oakland County International |
Atkinson Municipal (PTS) | Pittsburg | KS | Walter A Duncan Field Illinois Valley Regional to Atkinson Municipal |
Chicago Executive (PWK) | Chicago | IL | Walter A Duncan Field Illinois Valley Regional to Chicago Executive |
Batten International (RAC) | Racine | WI | Walter A Duncan Field Illinois Valley Regional to Batten International |
Fulton County (RCR) | Rochester | IN | Walter A Duncan Field Illinois Valley Regional to Fulton County |
Nartron Field (RCT) | Reed City | MI | Walter A Duncan Field Illinois Valley Regional to Nartron Field |
Chicago/Rockford International (RFD) | Rockford | IL | Walter A Duncan Field Illinois Valley Regional to Chicago/Rockford International |
Rhinelander Oneida County (RHI) | Rhinelander | WI | Walter A Duncan Field Illinois Valley Regional to Rhinelander Oneida County |
Richmond Municipal (RID) | Richmond | IN | Walter A Duncan Field Illinois Valley Regional to Richmond Municipal |
Rice Lake Regional - Carl's Field (RIE) | Rice Lake | WI | Walter A Duncan Field Illinois Valley Regional to Rice Lake Regional - Carl's Field |
Rolla Downtown (RLA) | Rolla | MO | Walter A Duncan Field Illinois Valley Regional to Rolla Downtown |
New Richmond Regional (RNH) | New Richmond | WI | Walter A Duncan Field Illinois Valley Regional to New Richmond Regional |
Jasper County (RNZ) | Rensselaer | IN | Walter A Duncan Field Illinois Valley Regional to Jasper County |
Merrill Municipal (RRL) | Merrill | WI | Walter A Duncan Field Illinois Valley Regional to Merrill Municipal |
Rochester International (RST) | Rochester | MN | Walter A Duncan Field Illinois Valley Regional to Rochester International |
Spirit Lake Municipal (RTL) | Spirit Lake | IA | Walter A Duncan Field Illinois Valley Regional to Spirit Lake Municipal |
Redwood Falls Municipal (RWF) | Redwood Falls | MN | Walter A Duncan Field Illinois Valley Regional to Redwood Falls Municipal |
Sparta Community - Hunter Field (SAR) | Sparta | IL | Walter A Duncan Field Illinois Valley Regional to Sparta Community - Hunter Field |
Sheboygan County Memorial (SBM) | Sheboygan | WI | Walter A Duncan Field Illinois Valley Regional to Sheboygan County Memorial |
South Bend International (SBN) | South Bend | IN | Walter A Duncan Field Illinois Valley Regional to South Bend International |
Scribner State (SCB) | Scribner | NE | Walter A Duncan Field Illinois Valley Regional to Scribner State |
Louisville International/Standiford Field (SDF) | Louisville | KY | Walter A Duncan Field Illinois Valley Regional to Louisville International/Standiford Field |
Freeman Municipal (SER) | Seymour | IN | Walter A Duncan Field Illinois Valley Regional to Freeman Municipal |
Springfield/Branson National (SGF) | Springfield | MO | Walter A Duncan Field Illinois Valley Regional to Springfield/Branson National |
Springfield/Beckley Municipal (SGH) | Springfield | OH | Walter A Duncan Field Illinois Valley Regional to Springfield/Beckley Municipal |
Sikeston Memorial Municipal (SIK) | Sikeston | MO | Walter A Duncan Field Illinois Valley Regional to Sikeston Memorial Municipal |
Sullivan County (SIV) | Sullivan | IN | Walter A Duncan Field Illinois Valley Regional to Sullivan County |
Storm Lake Municipal (SLB) | Storm Lake | IA | Walter A Duncan Field Illinois Valley Regional to Storm Lake Municipal |
Salem-Leckrone (SLO) | Salem | IL | Walter A Duncan Field Illinois Valley Regional to Salem-Leckrone |
Smith Field (SMD) | Fort Wayne | IN | Walter A Duncan Field Illinois Valley Regional to Smith Field |
Lake Cumberland Regional (SME) | Somerset | KY | Walter A Duncan Field Illinois Valley Regional to Lake Cumberland Regional |
Abraham Lincoln Capital (SPI) | Springfield | IL | Walter A Duncan Field Illinois Valley Regional to Abraham Lincoln Capital |
Spencer Municipal/Northwest Iowa Regional (SPW) | Spencer | IA | Walter A Duncan Field Illinois Valley Regional to Spencer Municipal/Northwest Iowa Regional |
St Cloud Regional (STC) | St Cloud | MN | Walter A Duncan Field Illinois Valley Regional to St Cloud Regional |
Stevens Point Municipal (STE) | Stevens Point | WI | Walter A Duncan Field Illinois Valley Regional to Stevens Point Municipal |
Rosecrans Memorial (STJ) | St Joseph | MO | Walter A Duncan Field Illinois Valley Regional to Rosecrans Memorial |
Lambert St Louis International (STL) | St Louis | MO | Walter A Duncan Field Illinois Valley Regional to Lambert St Louis International |
St Paul Downtown Holman Field (STP) | St Paul | MN | Walter A Duncan Field Illinois Valley Regional to St Paul Downtown Holman Field |
Door County Cherryland (SUE) | Sturgeon Bay | WI | Walter A Duncan Field Illinois Valley Regional to Door County Cherryland |
Spirit of St Louis (SUS) | St Louis | MO | Walter A Duncan Field Illinois Valley Regional to Spirit of St Louis |
Richard I Bong Memorial (SUW) | Superior | WI | Walter A Duncan Field Illinois Valley Regional to Richard I Bong Memorial |
Sioux Gateway/Col Bud Day Field (SUX) | Sioux City | IA | Walter A Duncan Field Illinois Valley Regional to Sioux Gateway/Col Bud Day Field |
Waynesville St Robert Regional/Forney Field (TBN) | Fort Leonard Wood | MO | Walter A Duncan Field Illinois Valley Regional to Waynesville St Robert Regional/Forney Field |
Toledo Executive (TDZ) | Toledo | OH | Walter A Duncan Field Illinois Valley Regional to Toledo Executive |
Newton Municipal (TNU) | Newton | IA | Walter A Duncan Field Illinois Valley Regional to Newton Municipal |
Toledo Express (TOL) | Toledo | OH | Walter A Duncan Field Illinois Valley Regional to Toledo Express |
Philip Billard Municipal (TOP) | Topeka | KS | Walter A Duncan Field Illinois Valley Regional to Philip Billard Municipal |
Trenton Municipal (TRX) | Trenton | MO | Walter A Duncan Field Illinois Valley Regional to Trenton Municipal |
Cherry Capital (TVC) | Traverse City | MI | Walter A Duncan Field Illinois Valley Regional to Cherry Capital |
Tuscola Area (TZC) | Caro | MI | Walter A Duncan Field Illinois Valley Regional to Tuscola Area |
Everett-Stewart Regional (UCY) | Union City | TN | Walter A Duncan Field Illinois Valley Regional to Everett-Stewart Regional |
Waukesha County (UES) | Waukesha | WI | Walter A Duncan Field Illinois Valley Regional to Waukesha County |
Chicago/Waukegan Regional (UGN) | Chicago | IL | Walter A Duncan Field Illinois Valley Regional to Chicago/Waukegan Regional |
Baldwin Field/Quincy Regional (UIN) | Quincy | IL | Walter A Duncan Field Illinois Valley Regional to Baldwin Field/Quincy Regional |
Waukon Municipal Airport (UKN) | Waukon | IA | Walter A Duncan Field Illinois Valley Regional to Waukon Municipal Airport |
New Ulm Municipal (ULM) | New Ulm | MN | Walter A Duncan Field Illinois Valley Regional to New Ulm Municipal |
Dodge County (UNU) | Juneau | WI | Walter A Duncan Field Illinois Valley Regional to Dodge County |
Rolla National (VIH) | Rolla/Vichy | MO | Walter A Duncan Field Illinois Valley Regional to Rolla National |
Vandalia Municipal (VLA) | Vandalia | IL | Walter A Duncan Field Illinois Valley Regional to Vandalia Municipal |
Porter County Regional (VPZ) | Valparaiso | IN | Walter A Duncan Field Illinois Valley Regional to Porter County Regional |
Roy Otten Memorial Airfield (VRS) | Versailles | MO | Walter A Duncan Field Illinois Valley Regional to Roy Otten Memorial Airfield |
West Branch Community (WBK) | West Branch | MI | Walter A Duncan Field Illinois Valley Regional to West Branch Community |
Roben-Hood (WBR) | Big Rapids | MI | Walter A Duncan Field Illinois Valley Regional to Roben-Hood |
Baxter County (WMH) | Mountain Home | AR | Walter A Duncan Field Illinois Valley Regional to Baxter County |
Grand Geneva Resort (XES) | Lake Geneva | WI | Walter A Duncan Field Illinois Valley Regional to Grand Geneva Resort |
Chatham-Kent Municipal (YCK) | Chatham | ON | Walter A Duncan Field Illinois Valley Regional to Chatham-Kent Municipal |
Willow Run (YIP) | Detroit | MI | Walter A Duncan Field Illinois Valley Regional to Willow Run |
Pelee Island (YPT) | Pelee Island | ON | Walter A Duncan Field Illinois Valley Regional to Pelee Island |
Windsor (YQG) | Windsor | ON | Walter A Duncan Field Illinois Valley Regional to Windsor |
Sarnia/Chris Hadfield (YZR) | Sarnia | ON | Walter A Duncan Field Illinois Valley Regional to Sarnia/Chris Hadfield |
Zanesville Municipal (ZZV) | Zanesville | OH | Walter A Duncan Field Illinois Valley Regional to Zanesville Municipal |