Rank | Search Term | Volume |
1. | southwest airlines | 9.92% |
2. | american airlines | 3.68% |
3. | united airlines | 2.86% |
4. | continental airlines | 2.74% |
5. | delta airlines | 2.22% |
6. | northwest airlines | 1.83% |
7. | us airways | 1.80% |
8. | southwest | 1.71% |
9. | delta | 1.61% |
10. | allegiant air | 1.40% |
Source: Hitwise |