The following is a list of the many types of services and businesses operating in and around Ellington Airport and the companies providing those services:
Fixed-base Operator (FBO)
| Tenant | Contact |
| Signature Flight Support | 1-281-484-6551 |
Other Tenants
| Tenant | Contact |
| TrustComm, Inc. | 1-281-272-7500 1-877-340-8524 |
| NASA | 1-281-483-0123 |
| Texas Air National Guard | 1-281-929-2110 |
| Texas Army National Guard | 1-281-464-8101 |
| U.S. Coast Guard | 1-713-578-3000 |
| Texas Flying Legends | 1-832-630-5501 |
| Northrop Rice | 1-281-499-7200 |
| Lone Star Flight Museum | 1-409-740-7722 1-888-359-5736 |
| North American Controls | 1-281-481-3073 |