| Rank | Search Term | Volume |
| 1. | southwest airlines | 7.12% |
| 2. | american airlines | 3.69% |
| 3. | united airlines | 2.53% |
| 4. | delta airlines | 2.53% |
| 5. | continental airlines | 2.28% |
| 6. | southwest | 1.96% |
| 7. | us airways | 1.89% |
| 8. | northwest airlines | 1.75% |
| 9. | delta | 1.58% |
| 10. | southwest.com | 1.46% |
| Souce: Hitwise | ||