About United Airlines Company
| Main Base | Chicago O’Hare International Airport (ORD) |
| Headquarters | 233 South Wacker Drive (Willis Tower), Chicago, IL 60606, USA |
| Parent Oraganization | United Airlines Holdings, Inc. |
| Operating bases | Chicago O’Hare International Airport (ORD) |
| Commenced operations | March 28, 1931 |
| Routes | 2,743 |
| Number of aircraft | 1,031 |
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