| Rank | Search Term | Volume | |
| 1. | southwest airlines | 8.11% | |
| 2. | american airlines | 3.98% | |
| 3. | continental airlines | 2.73% | |
| 4. | delta airlines | 2.59% | |
| 5. | united airlines | 2.57% | |
| 6. | us airways | 2.18% | |
| 7. | southwest | 1.92% | |
| 8. | northwest airlines | 1.89% | |
| 9. | southwest.com | 1.86% | |
| 10. | delta | 1.35% | |
| Source:Hitwise | |||