| Albuquerque/Sunport International (ABQ) | Albuquerque | NM | Boulder Municipal to Albuquerque/Sunport International |
| Afton Municipal (AFO) | Afton | WY | Boulder Municipal to Afton Municipal |
| Arapahoe Municipal (AHF) | Arapahoe | NE | Boulder Municipal to Arapahoe Municipal |
| Alliance Municipal (AIA) | Alliance | NE | Boulder Municipal to Alliance Municipal |
| Colorado Plains Regional (AKO) | Akron | CO | Boulder Municipal to Colorado Plains Regional |
| San Luis Valley Regional/Bergman Field (ALS) | Alamosa | CO | Boulder Municipal to San Luis Valley Regional/Bergman Field |
| Rick Husband Amarillo International (AMA) | Amarillo | TX | Boulder Municipal to Rick Husband Amarillo International |
| Animas Air Park (AMK) | Durango | CO | Boulder Municipal to Animas Air Park |
| Ainsworth Regional (ANW) | Ainsworth | NE | Boulder Municipal to Ainsworth Regional |
| Aspen-Pitkin County/Sardy Field (ASE) | Aspen | CO | Boulder Municipal to Aspen-Pitkin County/Sardy Field |
| Angel Fire (Colfax County) (AXX) | Angel Fire | NM | Boulder Municipal to Angel Fire (Colfax County) |
| Broken Bow Municipal/Keith Glaze Field (BBW) | Broken Bow | NE | Boulder Municipal to Broken Bow Municipal/Keith Glaze Field |
| Blanding Municipal (BDG) | Blanding | UT | Boulder Municipal to Blanding Municipal |
| Western Nebraska Regional/William B Heilig Field (BFF) | Scottsbluff | NE | Boulder Municipal to Western Nebraska Regional/William B Heilig Field |
| Bullfrog Basin (BFG) | Glen Canyon | UT | Boulder Municipal to Bullfrog Basin |
| Hutchinson County (BGD) | Borger | TX | Boulder Municipal to Hutchinson County |
| Brigham City Regional (BMC) | Brigham City | UT | Boulder Municipal to Brigham City Regional |
| Miley Memorial Field (Big Piney) (BPI) | Big Piney | WY | Boulder Municipal to Miley Memorial Field (Big Piney) |
| Skypark (BTF) | Bountiful | UT | Boulder Municipal to Skypark |
| Cram Field (BUB) | Burwell | NE | Boulder Municipal to Cram Field |
| Johnson County (BYG) | Buffalo | WY | Boulder Municipal to Johnson County |
| Clayton Municipal Airpark (CAO) | Clayton | NM | Boulder Municipal to Clayton Municipal Airpark |
| Shalz Field (CBK) | Colby | KS | Boulder Municipal to Shalz Field |
| Chadron Municipal (CDR) | Chadron | NE | Boulder Municipal to Chadron Municipal |
| Cortez Municipal (CEZ) | Cortez | CO | Boulder Municipal to Cortez Municipal |
| Craig-Moffat (CIG) | Craig | CO | Boulder Municipal to Craig-Moffat |
| Fremont County (CNE) | Canon City | CO | Boulder Municipal to Fremont County |
| Canyonlands Field (CNY) | Moab | UT | Boulder Municipal to Canyonlands Field |
| Yellowstone Regional (COD) | Cody | WY | Boulder Municipal to Yellowstone Regional |
| City of Colorado Springs Municipal (COS) | Colorado Springs | CO | Boulder Municipal to City of Colorado Springs Municipal |
| Casper/Natrona County International (CPR) | Casper | WY | Boulder Municipal to Casper/Natrona County International |
| Cheyenne Regional/Jerry Olson Field (CYS) | Cheyenne | WY | Boulder Municipal to Cheyenne Regional/Jerry Olson Field |
| Dodge City Regional (DDC) | Dodge City | KS | Boulder Municipal to Dodge City Regional |
| Converse County (DGW) | Douglas | WY | Boulder Municipal to Converse County |
| Dalhart Municipal (DHT) | Dalhart | TX | Boulder Municipal to Dalhart Municipal |
| Durango/La Plata County (DRO) | Durango | CO | Boulder Municipal to Durango/La Plata County |
| Delta Municipal (DTA) | Delta | UT | Boulder Municipal to Delta Municipal |
| Phifer Airfield (EAN) | Wheatland | WY | Boulder Municipal to Phifer Airfield |
| Kearney Regional (EAR) | Kearney | NE | Boulder Municipal to Kearney Regional |
| Mondell Field (ECS) | Newcastle | WY | Boulder Municipal to Mondell Field |
| Eagle County Regional (EGE) | Eagle | CO | Boulder Municipal to Eagle County Regional |
| Kemmerer Municipal (EMM) | Kemmerer | WY | Boulder Municipal to Kemmerer Municipal |
| Ohkay Owingeh (ESO) | Espanola | NM | Boulder Municipal to Ohkay Owingeh |
| Evanston-Uinta County Burns Field (EVW) | Evanston | WY | Boulder Municipal to Evanston-Uinta County Burns Field |
| Fort Bridger Airport (FBR) | Fort Bridger | WY | Boulder Municipal to Fort Bridger Airport |
| Fillmore Municipal (FIL) | Fillmore | UT | Boulder Municipal to Fillmore Municipal |
| Four Corners Regional (FMN) | Farmington | NM | Boulder Municipal to Four Corners Regional |
| Fort Sumner Municipal (FSU) | Fort Sumner | NM | Boulder Municipal to Fort Sumner Municipal |
| Gage (GAG) | Gage | OK | Boulder Municipal to Gage |
| Great Bend Municipal (GBD) | Great Bend | KS | Boulder Municipal to Great Bend Municipal |
| Gillette-Campbell County (GCC) | Gillette | WY | Boulder Municipal to Gillette-Campbell County |
| Garden City Regional (GCK) | Garden City | KS | Boulder Municipal to Garden City Regional |
| South Big Horn County (GEY) | Greybull | WY | Boulder Municipal to South Big Horn County |
| Grand Junction Regional Walker Field (GJT) | Grand Junction | CO | Boulder Municipal to Grand Junction Regional Walker Field |
| Renner Field/Goodland Municipal (GLD) | Goodland | KS | Boulder Municipal to Renner Field/Goodland Municipal |
| Grants-Milan Municipal (GNT) | Grants | NM | Boulder Municipal to Grants-Milan Municipal |
| Central Nebraska Regional (GRI) | Grand Island | NE | Boulder Municipal to Central Nebraska Regional |
| Gordon Municipal (GRN) | Gordon | NE | Boulder Municipal to Gordon Municipal |
| Gunnison/Crested Butte Regional (GUC) | Gunnison | CO | Boulder Municipal to Gunnison/Crested Butte Regional |
| Gallup Municipal (GUP) | Gallup | NM | Boulder Municipal to Gallup Municipal |
| Guymon Municipal (GUY) | Guymon | OK | Boulder Municipal to Guymon Municipal |
| Glenwood Springs Municipal (GWS) | Glenwood Springs | CO | Boulder Municipal to Glenwood Springs Municipal |
| Brewster Field (HDE) | Holdrege | NE | Boulder Municipal to Brewster Field |
| Hayden Yampa Valley Regional (HDN) | Hayden | CO | Boulder Municipal to Hayden Yampa Valley Regional |
| Hill City Municipal (HLC) | Hill City | KS | Boulder Municipal to Hill City Municipal |
| Hastings Municipal (HSI) | Hastings | NE | Boulder Municipal to Hastings Municipal |
| Hanksville (HVE) | Hanksville | UT | Boulder Municipal to Hanksville |
| Hays Regional (HYS) | Hays | KS | Boulder Municipal to Hays Regional |
| Imperial Municipal (IML) | Imperial | NE | Boulder Municipal to Imperial Municipal |
| Jackson Hole (JAC) | Jackson | WY | Boulder Municipal to Jackson Hole |
| Lamar Municipal (LAA) | Lamar | CO | Boulder Municipal to Lamar Municipal |
| Los Alamos (LAM) | Los Alamos | NM | Boulder Municipal to Los Alamos |
| Laramie Regional (LAR) | Laramie | WY | Boulder Municipal to Laramie Regional |
| North Platte Regional/Lee Bird Field (LBF) | North Platte | NE | Boulder Municipal to North Platte Regional/Lee Bird Field |
| Liberal Mid-America Regional (LBL) | Liberal | KS | Boulder Municipal to Liberal Mid-America Regional |
| Logan-Cache (LGU) | Logan | UT | Boulder Municipal to Logan-Cache |
| Limon Municipal (LIC) | Limon | CO | Boulder Municipal to Limon Municipal |
| Hunt Field (LND) | Lander | WY | Boulder Municipal to Hunt Field |
| Lusk Municipal (LSK) | Lusk | WY | Boulder Municipal to Lusk Municipal |
| Las Vegas Municipal (LVS) | Las Vegas | NM | Boulder Municipal to Las Vegas Municipal |
| Jim Kelly Field (LXN) | Lexington | NE | Boulder Municipal to Jim Kelly Field |
| Lake County (LXV) | Leadville | CO | Boulder Municipal to Lake County |
| Lyons-Rice County Muni (LYO) | Lyons | KS | Boulder Municipal to Lyons-Rice County Muni |
| Mccook Ben Nelson Regional (MCK) | Mc Cook | NE | Boulder Municipal to Mccook Ben Nelson Regional |
| Malad City (MLD) | Malad City | ID | Boulder Municipal to Malad City |
| Mount Pleasant (MSD) | Mount Pleasant | UT | Boulder Municipal to Mount Pleasant |
| Montrose Regional (MTJ) | Montrose | CO | Boulder Municipal to Montrose Regional |
| Kayenta (MVM) | Kayenta | AZ | Boulder Municipal to Kayenta |
| Nephi Munivipal (NPH) | Nephi | UT | Boulder Municipal to Nephi Munivipal |
| Manti-Ephraim (NTJ) | Manti | UT | Boulder Municipal to Manti-Ephraim |
| Searle Field (OGA) | Ogallala | NE | Boulder Municipal to Searle Field |
| Ogden/Hinckley (OGD) | Ogden | UT | Boulder Municipal to Ogden/Hinckley |
| Garden County (OKS) | Oshkosh | NE | Boulder Municipal to Garden County |
| The O'neill Municipal-John L Baker Field (ONL) | O'neill | NE | Boulder Municipal to The O'neill Municipal-John L Baker Field |
| Page Municipal (PGA) | Page | AZ | Boulder Municipal to Page Municipal |
| Pagosa Springs/Stevens Field (PGO) | Pagosa Springs | CO | Boulder Municipal to Pagosa Springs/Stevens Field |
| Philip (PHP) | Philip | SD | Boulder Municipal to Philip |
| Pierre Regional (PIR) | Pierre | SD | Boulder Municipal to Pierre Regional |
| Powell Municipal (POY) | Powell | WY | Boulder Municipal to Powell Municipal |
| Perry Lefors Field (PPA) | Pampa | TX | Boulder Municipal to Perry Lefors Field |
| Pratt Regional (PTT) | Pratt | KS | Boulder Municipal to Pratt Regional |
| Pueblo Memorial (PUB) | Pueblo | CO | Boulder Municipal to Pueblo Memorial |
| Carbon County Regional/Buck Davis Field (PUC) | Price | UT | Boulder Municipal to Carbon County Regional/Buck Davis Field |
| Provo Municipal (PVU) | Provo | UT | Boulder Municipal to Provo Municipal |
| Rapid City Regional (RAP) | Rapid City | SD | Boulder Municipal to Rapid City Regional |
| Rooks County Regional (RCP) | Stockton | KS | Boulder Municipal to Rooks County Regional |
| Richfield Municipal (RIF) | Richfield | UT | Boulder Municipal to Richfield Municipal |
| Garfield County Regional (RIL) | Rifle | CO | Boulder Municipal to Garfield County Regional |
| Riverton Regional (RIW) | Riverton | WY | Boulder Municipal to Riverton Regional |
| Rock Springs Sweetwater County (RKS) | Rock Springs | WY | Boulder Municipal to Rock Springs Sweetwater County |
| Rangely (RNG) | Rangely | CO | Boulder Municipal to Rangely |
| Roosevelt Municipal (ROL) | Roosevelt | UT | Boulder Municipal to Roosevelt Municipal |
| Russell Municipal (RSL) | Russell | KS | Boulder Municipal to Russell Municipal |
| Raton Municipal/Crews Field (RTN) | Raton | NM | Boulder Municipal to Raton Municipal/Crews Field |
| Green River Municipal (RVR) | Green River | UT | Boulder Municipal to Green River Municipal |
| Rawlins Municipal/Harvey Field (RWL) | Rawlins | WY | Boulder Municipal to Rawlins Municipal/Harvey Field |
| Shively Field (SAA) | Saratoga | WY | Boulder Municipal to Shively Field |
| Santa Fe Municipal (SAF) | Santa Fe | NM | Boulder Municipal to Santa Fe Municipal |
| Salina-Gunnison (SBO) | Salina | UT | Boulder Municipal to Salina-Gunnison |
| Steamboat Springs/Bob Adams Field (SBS) | Steamboat Springs | CO | Boulder Municipal to Steamboat Springs/Bob Adams Field |
| Sheridan County (SHR) | Sheridan | WY | Boulder Municipal to Sheridan County |
| Salt Lake City International (SLC) | Salt Lake City | UT | Boulder Municipal to Salt Lake City International |
| Harriet Alexander Field (SLT) | Salida | CO | Boulder Municipal to Harriet Alexander Field |
| Lloyd W. Carr Field/Sidney Municipal (SNY) | Sidney | NE | Boulder Municipal to Lloyd W. Carr Field/Sidney Municipal |
| Black Hills-Clyde Ice Field (SPF) | Spearfish | SD | Boulder Municipal to Black Hills-Clyde Ice Field |
| Sterling Municipal (STK) | Sterling | CO | Boulder Municipal to Sterling Municipal |
| Perry Stokes (TAD) | Trinidad | CO | Boulder Municipal to Perry Stokes |
| Tucumcari Municipal (TCC) | Tucumcari | NM | Boulder Municipal to Tucumcari Municipal |
| Tradewind (TDW) | Amarillo | TX | Boulder Municipal to Tradewind |
| Telluride Regional (TEX) | Telluride | CO | Boulder Municipal to Telluride Regional |
| Hot Springs County-Thermopolis Municipal (THP) | Thermopolis | WY | Boulder Municipal to Hot Springs County-Thermopolis Municipal |
| Torrington Municipal (TOR) | Torrington | WY | Boulder Municipal to Torrington Municipal |
| Taos Regional (TSM) | Taos | NM | Boulder Municipal to Taos Regional |
| Vernal Regional (VEL) | Vernal | UT | Boulder Municipal to Vernal Regional |
| Miller Field (VTN) | Valentine | NE | Boulder Municipal to Miller Field |
| North Fork Valley (WPO) | Paonia | CO | Boulder Municipal to North Fork Valley |
| Worland Municipal (WRL) | Worland | WY | Boulder Municipal to Worland Municipal |
| West Woodward (WWR) | Woodward | OK | Boulder Municipal to West Woodward |
| Pine Ridge (XPR) | Pine Ridge | SD | Boulder Municipal to Pine Ridge |
