| CityName | Code | AirportName | State | |
| Billings | BIL | LOGAN INTL | MT | |
| Bozeman | BZN | GALLATIN FIELD | MT | |
| Bridger | WQT | BRIDGER MUNICIPAL | MT | |
| Butte | BTM | SILVER BOW COUNTY | MT | |
| Cut Bank | CTB | CUT BANK | MT | |
| Deer Lodge | VWW | DEER LODGE CITY/CO | MT | |
| Glasgow | GGW | GLASGOW INTL | MT | |
| Glendive | GDV | DAWSON COMMUNITY | MT | |
| Great Falls | GFA | MALMSTROM AFB | MT | |
| Great Falls | GTF | GREAT FALLS INTL | MT | |
| Hamilton | WQC | RAVALLI COUNTY | MT | |
| Havre | HVR | HAVRE CITY-COUNTY | MT | |
| Helena | HLN | HELENA | MT | |
| Kalispell/Glacier Natl Pk | FCA | GLACIER NATL PARK | MT | |
| Lewistown | LWT | LEWISTOWN MUNICIPAL | MT | |
| Miles City | MLS | MILES CITY MUNICIPAL | MT | |
| Missoula | MSO | JOHNSON-BELL FIELD | MT | |
| Polson | XXT | POLSON | MT | |
| Poplar | WQS | POPLAR | MT | |
| Roundup | RPX | ROUNDUP | MT | |
| Sidney | SDY | RICHARD MUNICIPAL | MT | |
| St Ignatius | XWI | ST IGNATIUS | MT | |
| Stevensville | QQJ | STEVENSVILLE | MT | |
| Townsend | WQK | TOWNSEND | MT | |
| West Yellowstone | WYS | YELLOWSTONE | MT | |
| Wolf Point | OLF | WOLF POINT INTL | MT |
Last Updated on 10/13/00
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