| Willits Municipal Airport | |
| Nativename: | Ells Field |
| Faa: | O28 |
| Type: | Public |
| Operator: | City of Willits |
| Location: | Willits, California |
| Elevation-F: | 2,066 |
| Elevation-M: | 630 |
| R1-Number: | 16/34 |
| R1-Length-F: | 2,705 |
| R1-Length-M: | 824 |
| R1-Surface: | Asphalt |
Willits Municipal Airport, also known as Ells Field, is a public airport located three miles (4.6 km) northwest of Willits, serving Mendocino County, California, USA. This general aviation airport covers 75 acres and has one runway.