| name | Hub | image | date Ceased operations | date Commenced operations | IATA Code | ICAO Code | city Headquarters | administrative division Headquarters | country Headquarters | continent Headquarters | Country | continent | Parent | number of aircrafts | number of destinations | Website |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Big Sky Airlines | Billings Logan International Airport | 2008 | 1978 | GQ | BSY | Billings, Montana | Montana | United States | Americas | United States | Americas | 10 | 10 | Website | ||
| Comco |  | 2002 | Helena, Montana | Montana | United States | Americas | United States | Americas | 2 | Website | ||||||
| Corporate Air | Billings Logan International Airport | 1981 | OJ | CPT | Billings, Montana | Montana | United States | Americas | United States | Americas | 40 | Website | ||||
| Corporate Air (Philippines) | 2008 | 1995 | Billings, Montana | Montana | United States | Americas | Philippines | Asia | Corporate Air | Website | ||||||
| Merlin Airways | San Antonio International Airport | 1983 | MEI | Billings, Montana | Montana | United States | Americas | United States | Americas | 6 | Website |