Montana
| Site | Code |
|---|
| DRUMMOND | K3DU |
| HARLOWTON | K3HT |
| THOMPSON FALLS | K3TH |
| BILLINGS/LOGAN INTL | KBIL |
| BUTTE/BERT MOONEY | KBTM |
| BOZEMAN/GALLATIN | KBZN |
| CUT BANK (AWOS) | KCTB |
| DILLON AIRPORT | KDLN |
| KALISPELL/GLACIER | KFCA |
| GLENDIVE(AWOS) | KGDV |
| MALMSTROM AFB | KGFA |
| GLASGOW INTL ARPT | KGGW |
| GREAT FALLS INTL | KGTF |
| HELENA REGIONAL | KHLN |
| HAMILTON/RAVALLI CO | KHMM |
| HAVRE (AMOS) | KHVR |
| JORDAN (RAMOS) | KJDN |
| LIVINGSTON/MISSION | KLVM |
| LEWISTOWN MUNICIPAL | KLWT |
| MILES CITY & | KMLS |
| MISSOULA/BELL FIELD | KMSO |
| WOLF POINT INTL | KOLF |
| SIDNEY-RICHLAND | KSDY |
| WEST YELLOWSTONE & | KWEY |
| WEST YELLOWSTONE | KWYS |