Enter city, state, or port code.
| Name / Location | State   | Airport Code | Port Code | Zip Code |
| Lawrenceburg | Indiana | 4102 | ||
| Lebanon Municipal Airport | New Hampshire | LEB | 0181 | |
| Limestone | Maine | 0118 | ||
| Little Rock | Arkansas | LIT | 2003 | |
| Lockport | Illinois | 3901 | ||
| Logan International Airport Boston | Massachusetts | BOS | 0417 | |
| Long Beach | California | LGB | 2709 | |
| Los Angeles | California | LAX | 2704 | |
| Los Angeles International Airport | California | LAX | 2720 | |
| Louisville Intl Airport | Kentucky | SDF | 4115 | |
| Lubbock | Texas | LBB | 5503 | |
| Lukeville | Arizona | 2602 | ||
| Luling | Louisiana | 2009 | ||
| Madawaska | Maine | 0109 | ||
| Manistee | Michigan | MBL | 3815 | |
| Mare Island Strait | California | 2829 | ||
| Martinez | California | 2820 | ||
| Mayberry Slough | California | 2828 | ||
| Melbourne | Florida | MLB | 1885 | |
| Memphis | Tennessee | MEM | 2006 | |
| Miami | Florida | MIA | 5201 | |
| Miami International Airport | Florida | MIA | 5206 | 33126 |
| Michigan City Harbor | Indiana | MGC | 3905 | |
| Midland International Airport | Texas | MAF | 5582 | |
| Milwaukee | Wisconsin | MKE | 3701 | |
