| Rank | Search Term | Volume |
| 1. | southwest airlines | 8.50% |
| 2. | american airlines | 3.93% |
| 3. | united airlines | 2.90% |
| 4. | continental airlines | 2.67% |
| 5. | delta airlines | 2.63% |
| 6. | us airways | 2.06% |
| 7. | southwest | 1.97% |
| 8. | northwest airlines | 1.96% |
| 9. | southwest.com | 1.54% |
| 10. | jet blue | 1.52% |
| Source: Hitwise | ||