| Restricted Cash and Short-term Investments | |||||||||
| Millions | |||||||||
| 2000 | 2001 | 2002 | 2003 | 2004 | 2005 | 2006 | 2007 | ||
| AMR Corp | - | 535 | 783 | 527 | 478 | 510 | 468 | 428 | |
| Continental Airlines Inc | - | 30 | 62 | 170 | 211 | 241 | 265 | 179 | |
| Delta Air Lines Inc | - | - | 134 | 207 | 348 | 870 | 750 | 520 | |
| Northwest Airlines Corp | 35 | 100 | 100 | 126 | 156 | 600 | 424 | 725 | |
| UAL Corp | - | - | 462 | 679 | 877 | 643 | 341 | 325 | |
| US Airways Group Inc I | - | - | 150 | 151 | 99 | - | - | - | |
| US Airways Group Inc II | - | - | - | - | - | - | 1 | 2 | |
| America West Holdings Corp | - | - | - | 43 | 41 | - | - | - | |
| --sub Network | 35 | 665 | 1,691 | 1,903 | 2,210 | 2,864 | 2,249 | 2,179 | |
| Southwest Airlines Co | - | - | - | - | - | - | - | - | |
| JetBlue Airways Corp | - | - | - | - | - | - | - | - | |
| AirTran Holdings Inc | 26 | 27 | 34 | 10 | 8 | 19 | 25 | 30 | |
| Frontier Airlines Holdings Inc* | 9 | 12 | 15 | 25 | 28 | 35 | 43 | 74 | |
| --sub LCC | 35 | 39 | 49 | 35 | 36 | 55 | 68 | 104 | |
| Alaska Air Group Inc | - | - | - | - | - | - | - | - | |
| Hawaiian Holdings Inc | - | 27 | 23 | - | 1 | 53 | 54 | 39 | |
| Midwest Air Group Inc | - | - | 15 | 26 | 29 | 39 | 40 | - | |
| -- sub Other | - | 27 | 38 | 26 | 30 | 92 | 93 | 39 | |
| Total All Sectors | 70 | 731 | 1,778 | 1,963 | 2,276 | 3,011 | 2,410 | 2,321 | |
| * Frontier Airlines Inc before 2006. Year end March 31 treated as the year before. | |||||||||
| Note: Zero value might also mean data not reported. | |||||||||
| Data Source: SEC 10K Filings | |||||||||