| Alaska Airlines (AS) | Allegiant Air Llc (G4) | Delta Air Lines (DL) |
| Northwest Airlines (NW) | United Airlines (UA) |
| Bozeman (BZN) | Denver Intl Apt (DEN) | Helena (HLN) |
| Kalispell (FCA) | Las Vegas McCarran International Apt (LAS) | Minneapolis International Apt (MSP) |
| Salt Lake City (SLC) | Seattle/Tacoma International Apt (SEA) |