| Parent | Northern Arizona Intergovernmental Public Transportation Authority |
|---|---|
| Founded | 2001 |
| Headquarters | 3773 N. Kaspar Dr. |
| Locale | Flagstaff, AZ |
| Service area | Transit |
| Service type | bus service |
| Routes | 9 |
| Hubs | Downtown Transfer Center and Flagstaff Mall |
| Fuel type | Hybrid diesel and electric |
| Website | mountainline.az.gov |
The Mountain Line provides fixed route public transportation bus service in the Flagstaff area of Coconino County, Arizona. It started in 2001 as NAIPTA, replacing the county-run Pine Country Transit.
There are nine routes currently in service (2, 3, 4, 5, 7, 8, 10, 14 and 66). Every route currently in service interchanges at the Downtown Connection Center, located on W. Phoenix Ave at S. Mikes Pike. Additionally, three routes (2, 3, and 66) interchange at the Flagstaff Mall Connection Center, located behind the mall at Marketplace Dr./Mall Way.
Routes currently in service: