| - | - | Landmark Usfs | Landmark | |
| - | - | Lane | Sanger | |
| - | - | Laneys | Maiden | |
| - | KAIG | Langlade Co | Antigo | |
| - | - | Lansdowne Airport | Youngstown | |
| - | KIGQ | Lansing Municipal | Chicago | |
| LPO | KPPO | Laporte Municipal Airport | Laporte | |
| - | - | Larimore Municipal | Larimore | |
| - | - | Larkin | Palatka | |
| - | KLQR | Larned-Pawnee Co | Larned | |
| - | - | Larsen | Belleville | |
| - | - | Larsh | Colfax | |
| LRN | - | Larson Air Force Base | Moses Lake | |
| LTH | - | Lathrop Wells Airport | Lathrop Wells | |
| - | - | Laughlin Afb Aux No 1 | Spofford | |
| - | - | Laurel | Laurel | |
| - | - | Laurel Municipal | Laurel | |
| - | - | Laurens Co | Laurens | |
| - | - | Laverne Municipal | Laverne | |
| - | - | Lavina | Lavina | |
| - | - | Lawing | Lawing | |
| LWC | KLWC | Lawrence Airport | Lawrence | |
| MWC | KMWC | Lawrence J. Timmerman Airport | Milwaukee | |
| - | - | Lawrenceburg-Lawrence Co | Lawrenceburg | |
| LVL | KLVL | Lawrenceville Airport | Lawrenceville | |
| LWV | KLWV | Lawrenceville Municipal Airport | Lawrenceville | |
| - | - | Le Gros Memorial | Crowley | |
| - | - | Le Maire Memorial | Jeanerette | |
| - | - | Le Roy | Le Roy | |
| - | - | Le Sueur Municipal | Le Sueur | |
| - | - | Lea Co | Tatum | |
| - | - | Lea Co | Jal | |
| - | - | Lea Co-Franklin Memorial | Lovington | |
| - | - | Leach | Center | |
| - | - | Leaders/Clear Lake Airport | Clear Lake | |
| - | - | Leadore | Leadore | |
| LXV | KLXV | Leadville Airport | Leadville | |
| - | - | Lebanon Municipal Airport | Lebanon | |
| - | - | Lebanon State | Lebanon | |
| - | - | Lebanon-Springfield Airport | Springfield | |
| - | - | Lebanon-Warren Co | Lebanon | |
| SLO | KSLO | Leckrone Airport | Salem | |
| - | - | Ledgedale | Brockport | |
| - | - | Lee | De Land | |
| ANP | KANP | Lee Airport | Annapolis | |
| - | - | Lee Bottom | Hanover | |
| - | - | Lee Co | Bishopville | |
| - | KPTG | Lee Co | Pennington Gap | |
| - | - | Lee Co-Marianna | Marianna | |
| GVL | KGVL | Lee Gilmer Memorial Airport | Gainesville | |