| Identifier: | SPHNX |
| NAS ID: | SPHNX |
| Name: | SPHNX |
| Fix Type: | Civilian |
| Fix Use: | |
| State: | MONTANA |
| ICAO Region: | K1 |
| Latitude: | 45-19-59.860N (45.333300) |
| Longitude: | 111-39-13.680W (-111.653800) |
| Magnetic Variance: | 11.4 E as of 9/30/2025 |
| High ARTCC Area: | ZLC |
| Low ARTCC Area: | ZLC |
| Published: | Yes |
| Charts: | |
| Pitch: | No |
| Catch: | No |
| SUA ATCAA: | No |
| SID |