| Alaska Airlines (AS) | Delta Air Lines (DL) | Frontier Airlines Inc. (F9) |
| Northwest Airlines (NW) | United Airlines (UA) |
| Atlanta Hartsfield-Jackson Intl Apt (ATL) | Chicago O'Hare International Apt (ORD) | Denver Intl Apt (DEN) |
| Detroit Wayne County (DTW) | Great Falls International Apt (GTF) | Los Angeles International Apt (LAX) |
| Minneapolis International Apt (MSP) | Salt Lake City (SLC) | San Francisco International Apt (SFO) |
| Seattle/Tacoma International Apt (SEA) |