| - | - | Little Goose Lock & Dam | Starbuck | |
| WLN | - | Little Naukati Airport | Little Naukati | |
| LPW | - | Little Port Walter Airport | Little Port Walter | |
| - | - | Little River | Little River | |
| LRF | KLRF | Little Rock Air Force Base | Jacksonville | |
| - | - | Littlebrook | Eliot | |
| - | - | Littlefield Municipal | Littlefield | |
| - | - | Littlefork Municipal/Hanover | Littlefork | |
| - | - | Live Oak Co | George West | |
| LIV | - | Livengood Airport | Livengood | |
| - | - | Livingston Municipal | Livingston | |
| - | - | Livingston Municipal | Livingston | |
| - | - | Llano Municipal | Llano | |
| - | - | Loars Field Inc | Onsted | |
| - | TX25 | Lochridge Ranch | Athens | |
| - | - | Lockhart Municipal | Lockhart | |
| - | - | Lodi | Lodi | |
| - | - | Logan Co | Lincoln | |
| - | - | Logan Co | Logan | |
| - | KGGP | Logansport Municipal | Logansport | |
| LPC | KLPC | Lompoc Airport | Lompoc | |
| - | - | Lone Hickory | Yadkinville | |
| - | - | Lone Pine | Lone Pine | |
| - | - | Lone Star Steel Company | Lone Star | |
| LNI | - | Lonely Air Station | Lonely | |
| JLB | - | Long Beach Heliport | Long Beach | |
| LIJ | - | Long Island Airport | Long Island | |
| KLS | KKLS | Longview Airport | Kelso | |
| LOG | - | Longview Airport | Longview | |
| - | KXVG | Longville Municipal | Longville | |
| - | KLPR | Lorain County Regional Airport | Lorain/Elyria | |
| LSB | KLSB | Lordsburg Airport | Lordsburg | |
| LIZ | - | Loring Air Force Base | Limestone | |
| WLR | - | Loring Sea Plane Base | Loring | |
| - | KSLI | Los Alamitos Aaf | Los Alamitos | |
| LSN | KLSN | Los Banos Airport | Los Banos | |
| - | - | Lost Bridge Village | Garfield | |
| - | - | Lost Creek | Luzerne | |
| LHB | - | Lost Harbor Sea Port | Lost Harbor | |
| - | - | Lost Hills-Kern Co | Lost Hills | |
| LNN | KLNN | Lost Nation Airport | Willoughby | |
| LSR | - | Lost River Airport | Lost River | |
| - | - | Lost River Resort | Mazama | |
| - | KPQL | Lott International | Pascagoula | |
| LOW | KLKU | Louisa Airport | Louisa | |
| - | - | Louisiana Regional | Gonzales | |
| - | - | Louisville Municipal | Louisville | |
| - | - | Loup City Municipal | Loup City | |
| - | - | Love Co | Marietta | |
| LOR | - | Lowe Army Heliport | Ozark | |