| Allegiant | 702-505-8888 |
| American Airlines | 800-433-7300 |
| Delta Air Lines | 800-221-1212 |
| Frontier Airlines | 801-401-9000 |
| Midwest Express | |
| Southwest Airlines | 800-435-9792 |
| United Airlines | 800-241-6522 |
| Avis | 800-230-4898 |
| Budget | 800-527-0700 |
| Enterprise | 800-736-8222 |
| Hertz/Dollar | 800-654-3131 |
| National/Alamo | 800-227-7368 |
| FedEx | 800-238-5355 |
| United Parcel Service (UPS) | 800-443-6379 |
| Avflight FBO | 734-663-6466 |
| Avflight Services Corporation | 734-663-6466 |
| Northern Jet Management, Inc. | 616-336-4800 |
| The Company Jet | 616-336-4811 |
| Signature Flight Support | 616-336-4711 |
| STS Line Maintenance | 616-430-3509 |
| FAA Air Traffic Control | 616-575-1902 |
| FAA Airways Facilities | 616-464-5370 |
| National Weather Service | 616-949-0643 |
| TSA Employment | 888-328-6172 |
| TSA Customer Service | 866-289-9673 |
| U.S. Customs & Border Protection | 616-942-5245 |
| Civil Air Patrol | 616-934-8927 |
| Clear Channel Interspace Airport Advertising | 800-628-6800 |
| Cyndee's Shoe Shine | 616-893-3152 |
| Diverse Facility Solutions (airport janitorial services) | 773-582-1022 |
| DK Security | 616-656-0123 |
| Global Aviation Services, LLC | 616-956-6229 |
| HMSHost Restaurants | 616-239-7050 |
| Hudson Retail Shops | 616-233-6384 |
| Kent Career/Technical Center | 616-954-8008 |
| Mayday Avionics | 616-957-4920 |
| Prospect Airport Services | 616-550-7643 |
| Standard Parking | 616-336-8955 |
| Swissport | 616-956-0088 |
| Valet Parking | 616-233-6400 |
| West Michigan Aviation Academy | 616-446-8886 |