| K01 | Farington Field Airport | Auburn NE |
| K02 | Perryville Muni Airport | Perryville MO |
| K03 | Long Lake Sagamore Spb & Marina Seaplane Base | Long Lake NY |
| K06 | Greater Beardstown Airport | Beardstown IL |
| K07 | Rolla Downtown Airport | Rolla MO |
| K08 | Holly Airport | Holly CO |
| K09 | Piseco Airport | Piseco NY |
| K11 | Sam Riggs Airpark Airport | Claremore OK |
| K15 | Grand Glaize- Osage Beach Airport | Osage Beach MO |
| K16 | Becks Grove Airport | Rome NY |
| K17 | Montezuma Muni Airport | Montezuma KS |
| K19 | Albany Muni Airport | Albany MO |
| K21 | Rouses Point Seaplane Base | Rouses Point NY |
| K23 | Cooperstown-westville Airport | Cooperstown NY |
| K24 | Russell County Airport | Jamestown KY |
| K26 | Carrollton Memorial Airport | Carrollton MO |
| K27 | Burrello-mechanicville Airport | Mechanicville NY |
| K29 | Council Airport | Council AK |
| K30 | Heber Airpark Airport | Gansevoort NY |
| K31 | Sharon Airport | Sharon Springs NY |
| K32 | Riverside Airport | Wichita KS |
| K33 | Salem Memorial Airport | Salem MO |
| K34 | Gardner Muni Airport | Gardner KS |
| K36 | Onawa Muni Airport | Onawa IA |
| K38 | Washington County Memorial Airport | Washington KS |
| K39 | St Clair Rgnl Airport | St Clair MO |
| K40 | Anvik Seaplane Base | Anvik AK |
| K43 | Unionville Muni Airport | Unionville MO |
| K44 | Beaver Muni Airport | Beaver OK |
| K49 | Municipal Airport | Texhoma OK |
| K50 | Cook Airfield Airport | Rose Hill KS |
| K51 | Medicine Lodge Airport | Medicine Lodge KS |
| K52 | Capt. Ben Smith Airfield - Monroe City Airport | Monroe City MO |
| K55 | Thompson Pass Airport | Thompson Pass AK |
| K57 | Gould Peterson Muni Airport | Tarkio MO |
| K58 | Harold Krier Fld Airport | Ashland KS |
| K59 | Amelia Earhart Airport | Atchison KS |
| K61 | Moritz Memorial Airport | Beloit KS |
| K62 | Gene Snyder Airport | Falmouth KY |
| K63 | Council Grove Muni Airport | Council Grove KS |
| K64 | Vinland Valley Aerodrome Airport | Baldwin City KS |
| K65 | Dighton Airport | Dighton KS |
| K67 | Oswego Muni Airport | Oswego KS |
| K68 | Garnett Muni Airport | Garnett KS |
| K71 | Lincoln Muni Airport | Lincoln KS |
| K74 | Hamry Field Airport | Kindred ND |
| K75 | Osborne Muni Airport | Osborne KS |
| K77 | Freedom Muni Airport | Freedom OK |
| K78 | Abilene Muni Airport | Abilene KS |
| K79 | Jetmore Muni Airport | Jetmore KS |
| K81 | Miami County Airport | Paola KS |
| K82 | Smith Center Muni Airport | Smith Center KS |
| K83 | Sabetha Muni Airport | Sabetha KS |
| K87 | Hiawatha Muni Airport | Hiawatha KS |
| K88 | Allen County Airport | Iola KS |
| K89 | Macon-fower Memorial Airport | Macon MO |
| K91 | Horton Muni Airport | Horton KS |
| K94 | Rush County Airport | La Crosse KS |
| K96 | Tuscola Airport | Tuscola IL |
| K98 | Allison Muni Airport | Allison IA |
| KAE | Kake Seaplane Base | Kake AK |
| KAL | Kaltag Airport | Kaltag AK |
| KBE | Bell Island Hot Springs Seaplane Base | Bell Island AK |
| KCC | Coffman Cove Seaplane Base | Coffman Cove AK |
| KCL | Chignik Lagoon Airport | Chignik Lagoon AK |
| KCN | Chernofski Harbor Seaplane Base | Chernofski Harbor AK |
| KCR | Colorado Creek Airport | Colorado Creek AK |
| KDK | Kodiak Muni Airport | Kodiak AK |
| KEB | Nanwalek Airport | Nanwalek AK |
| KEK | Ekwok Airport | Ekwok AK |
| KFP | False Pass Airport | False Pass AK |
| KGX | Grayling Airport | Grayling AK |
| KGZ | Glacier Creek Airport | Glacier Creek AK |
| KIB | Ivanof Bay Seaplane Base | Ivanof Bay AK |
| KIC | Mesa Del Rey Airport | King City CA |
| KKA | Koyuk Alfred Adams Airport | Koyuk AK |
| KKB | Kitoi Bay Seaplane Base | Kitoi Bay AK |
| KKI | Akiachak Seaplane Base | Akiachak AK |
| KKL | Karluk Lake Seaplane Base | Karluk Lake AK |
| KKU | Ekuk Airport | Ekuk AK |
| KLG | Kalskag Airport | Kalskag AK |
| KLS | Southwest Washington Rgnl Airport | Kelso WA |
| KMY | Moser Bay Seaplane Base | Moser Bay AK |
| KNB | Kanab Muni Airport | Kanab UT |
| KNW | New Stuyahok Airport | New Stuyahok AK |
| KOA | Kona Intl At Keahole Airport | Kailua/kona HI |
| KOY | Olga Bay Seaplane Base | Olga Bay AK |
| KPB | Point Baker Seaplane Base | Point Baker AK |
| KPC | Port Clarence Cgs Airport | Port Clarence AK |
| KPR | Port Williams Seaplane Base | Port Williams AK |
| KPY | Port Bailey Seaplane Base | Port Bailey AK |
| KQA | Akutan Seaplane Base | Akutan AK |
| KSM | St Mary's Airport | St Mary's AK |
| KTB | Thorne Bay Seaplane Base | Thorne Bay AK |
| KTN | Ketchikan Intl Airport | Ketchikan AK |
| KTS | Brevig Mission Airport | Brevig Mission AK |
| KVC | King Cove Airport | King Cove AK |
| KVL | Kivalina Airport | Kivalina AK |
| KWF | Waterfall Seaplane Base | Waterfall AK |
| KWP | West Point Village Seaplane Base | West Point AK |
| KWT | Kwethluk Airport | Kwethluk AK |
| KXA | Kasaan Seaplane Base | Kasaan AK |
| KY8 | Hancock Co-ron Lewis Field Airport | Lewisport KY |
| KYK | Karluk Airport | Karluk AK |
| KYU | Koyukuk Airport | Koyukuk AK |
