| Alaska Airlines (AS) | Delta Air Lines (DL) | Northwest Airlines (NW) |
| Allegiant Air Llc (G4) | Frontier Airlines Inc. (F9) | United Airlines (UA) |
| Denver Intl Apt (DEN) | Las Vegas McCarran International Apt (LAS) | Salt Lake City (SLC) |
| Helena (HLN) | Minneapolis International Apt (MSP) | Seattle/Tacoma International Apt (SEA) |