- Kingston-Ulster
- Kirbyville Airport
- KIRK Air Base
- Kirksville Airport
- Kittie Hill Airport
- Kittie Hill Airport
- Klamath Falls Airport
- KNOX County Airport
- KNOX County Regional Airport
- Knoxville Airport Commission
- Knoxville Municipal Airport
- KOLL Aviation Airport
- Kosciusko-Attala County Arprt
- L & L Aviation Inc
- L M Clayton Airport Manager
- LA Belle Municipal Airport
- LA Cholla Airpark Inc
- LA Fayette Barwick Airport
- LA Grange Calloway Airport
- LA Guardia Airport
- LA Guardia Airport-Lga
- LA Junta Municipal Airport
- LA Porte Aero Club
- LA Porte Municipal Airport
- Lac Qui Parle Airport
- Lackey Aviation Airport
- Laconia Airport
- Lady's Island Airport
- Lafayette Barwick Airport
- Laguardia
- Laguardia
- Lake Andes Municipal Airport
- Lake Charles Regional Airport
- Lake Chelan Airport
- Lake City Airport
- Lake In The Hills Airport
- Lake In The Hills Airport
- Lake In The Hills Airport
- Lake Mills Municipal Airport
- Lake Norman Airport
- Lake Tenkiller Airpark
- Lake Wales Airport
- Lakefield Airport
- Lakeland Airport
- Lakeland Airport Manager's Ofc
- Lakeland Aviation Co-Airport
- Lakeland Linder Regl Airport
- Lakeview Municipal Airport
- Lakeway Airpark
- Lakeway Airpark
- Lakewood Airport Authority
- Lamar
- Lamar City Airport
- Lamar County Airport
- Lamar Municipal Airport
- Lamar Municipal Airport Mgr
- Lampasas City Airport
- Lampasas Municipal Airport
- Lancaster Airport
- Lancaster Airport
- Lancaster Airport
- Lancaster County Airport
- Lancaster Municipal Airport
- Land O'Lakes Municipal Airport
- Landmark Aviation
- Lane Aviation
- Lane County Airport
- Lanett Muicipal Airport
- Langlade County Airport
- Lantana Airport
- Laramie Regional Airport
- Las Animas County Airport
- Las Cruces Intl
- Las Cruces Intl Airport
- Las Vegas Municipal Airport
- Lattin Aviation
- Laurens County Airport
- Laurinburg-Maxton Airport
- Laverne Airport
- Lawrence County Airport
- Lawrence Smith Memorial Arprt
- Lawrenceville Brunswick Arprt
- Lawton Municipal Airport
- Lawton-Ft Sill Regional Arprt
- LAX Intl Baggage
- LBR Inc
- Le Mars Municipal Airport
- Le Master Aviation Inc
- Lebanon Airport Manager
- Lebanon Aviation Svc
- Lebanon Springfield Airport
- Lee C Fine Airport
- Lee C Fine Airport
- Lee Gilmer Memorial Airport
- Lee Runway Manager LLC
- Leelanau Township Airport
- Lees Summit Municipal Airport
- Leesburg Airport Adm
- Leesburg Regional Airport
- Leesville City Airport
- Leesville City Airport
- Lema Aviation Inc
- Lemmon Municipal Airport
- Lenawee County Airport
- Lenawee County Airport
- Letourneau Inc
- Lewis County Regional Airport
- Lewis Ranch Airport
- Lewis University Airport
- Lewis University Airport
- Lewis University Airport
- Lewiston-Nez Perce Cty Airport
- Lewistown Municipal Airport
- Lexington Airport Authority
- Lexington Airport Awos
- LGT Intl Inc
- Libby City-County Airport
- Liberal Airport
- Liberal Municipal Airport
- Liberty Aviation
- Liberty Aviation
- Liberty County Airport
- Liberty Municipal Airport
- Lightening Bar A Hangars
- Lihue Airport
- Limestone County Airport
- Limestone County Airport
- Limington Airport Authority
- Limo-The Airport Connection
- Lincoln Airport Authority-Lnk
- Lincoln County Airport
- Lincoln Municipal Airport
- Lincoln Park Airport
- Lincolnton/Lincoln Cnty Arprt
- Lindbergh Airport
- Lindsay Municipal Airport
- Lineas Aereas Azteca
- Linton Municipal Airport
- Lion Oil Co
- Litchfield Municipal Airport
- Litchfield Municipal Airport
- Little Falls Airport
- Little Rock Natl Airport-Lit
- Littlefield Municipal Airport
- Littlefield Municipal Airport
- Littlefield Municipal Airport
- Littlefield Municipal Airport
- Livermore Municipal Airport
- Livingston Airport
- Llano Airport
- Llano Airport
- Lockhart Municipal Airport
- Lockhart Municipal Airport
- Logan Airport Heating Plant
- Logan Cache Airport
- London Corbin Airport
- Lone Pine Airport
- Lone Pine Airport
- Lone Star Aercraft
- Lone Star Aercraft
- Lone Star Aercraft
- Lone Star Executive Airport
- Long Aviation-Goose Creek
- Long Beach Airport-Lgb
- Long Island Mc Arthur Airport
- Longmont Airport Awos
- Longville-Airport Line
- Lorain County Regional Airport
- Lordsburg Municipal Airport
- Los Alamos Airport
- Los Angeles Intl Airport-Lax
- Los Angeles LAX Airport
- Los Banos City Airport
- Louisiana Aircraft
- Louisiana Regional Airport
- Louisville Intl Airport
- Louisville Intl Airport
- Louisville Regional Airport
- Loup City Airport
- Lovington County Airport
- Lowcountry Regional Airport
- Loyd's Aviation Flight Trnng
- LSG Skychef
- Lt Paul Baer Terminal
- Lt Warren E Eaton Airport
- Lubbock International Airport
- Lubbock International Airport
- Luce County Airport
- Lumberton Airport
- Lumpkin County Airport
- Lunenburg County Airport
- Lunken Airport
- Luray Caverns Airport
- Lusk Airport
- Luverne Municipal Airport
- Luverne Municipal Airport
- Luverne Municipal Airport
- Lynchburg Airport Manager
- Lynchburg Regional Airport
- Lynden Municipal Airport
- Lynion Hanger 9
- M C Aviation Inc
- M C Aviation Inc
- Mabuhay Airport Svc Corp
- Mac Airo
- Mac Arthur Airport
- Machias Valley Airport
- Mack Mesa Airport Inc
- Mackay Airport
- Mackinac Aviation Inc
- Mackinac Aviation Inc
- Mackinac Island Airport
- Mackinac Island Airport
- Macomb Airport
- Macomb Airport Authority Awos
- Macon-Fower Memorial Airport
- Madera Municipal Airport
- Madera Municipal Airport
- Madison Aircraft
- Madison Airport
- Madison Airport
- Madison City Airport
- Madison County Airport
- Madison Municipal Airport
- Madisonville Airport
- Madras Jefferson County Arprt
- Magee City Airport
- Magee City Airport
- Magellan Aviation LLC
- Magnolia Airport
- Mainline Road & Bridge Airport
- Maize Airport Inc
- Malad Airport
- Malden Airport
- Malibu Airport Shuttle
- Mallory Airport
- Mammoth Air Charters
- Mammoth Airport Business
- Mammoth Lakes Airport
- Manchester Airport-Mht
- Manhattan Regional Airport
- Manitowish Waters Airport
- Manitowoc County Airport
- Mankato Regional Airport
- Mansfield Lahm Muni Airport
- Mansfield Municipal Airport
- Maple Lake Municipal Airport
- Maplegrove Airport
- Mapleton Airport
- Maquoketa City Airport
- Marana Northwest Reg Airport
- Marathon Airport
- Marathon Flight School Inc
- Marcellus Airport
- Marco Island Executive Airport
- Marcy Field
- Marfa Municipal Airport
- Marfa Municipal Airport
- Marianna Municipal Airport
- Marina Air
- Marina Municipal Airport
- Marine City Aviation
- Marion Airport
- Marion Airport
- Marion County Airport
- Marion County Airport
- Marion County Airport
- Marion County Regional Airport
- Marion Municipal Airport
- Mariposa-Yosemite Airport
- Mark Anton Airport
- Marks Municipal
- Marlar Rentals
- Marlborough Airport
- Marshall County Airport
- Marshfield City Airport
- Marshfield Municipal Airport
- Marthas Vineyard Airport
- Marthas Vineyard Airport
- Martin County Airport
- Martin State Airport
- Martin-Campbell Airport
- Maryland Airport
- Maryville Airport
- Mason Airport
- Mason City Municipal Airport
- Mason City Municipal Airport
- Mason County Airport
- Mason County Airport
- Massena International Airport
- Massey Aero
- Massey Hanger
- Massport Authority
- Mather Airport
- Mathies Memorial Airport
- Maury County Airport AWOS
- Maxair Inc
- MBS Intl Airport
- Mc Alester City Airport Mgr
- Mc Allen-Miller Intl Airport
