| Pos. | Nr. | Fahrer | Team | Zeit | auf F. | Abstand |
|---|---|---|---|---|---|---|
| 1 | S. Bourdais | Newman/Haas Racing | 57.242 | |||
| 2 | W. Power | Team Australia | 57.405 | 0.163 | ||
| 3 | J. Wilson | RSPORTS | 57.533 | 0.291 | 0.128 | |
| 4 | N. Jani | PKV Racing | 57.753 | 0.511 | 0.220 | |
| 5 | O. Servia | Forsythe Championship Racing | 57.790 | 0.548 | 0.037 | |
| 6 | G. Rahal | Newman/Haas Racing | 57.896 | 0.654 | 0.106 | |
| 7 | S. Pagenaud | Team Australia | 57.929 | 0.687 | 0.033 | |
| 8 | T. Gommendy | PKV Racing | 58.026 | 0.784 | 0.097 | |
| 9 | M. Dominguez | Forsythe Championship Racing | 58.079 | 0.837 | 0.053 | |
| 10 | B. Junqueira | Dale Coyne Racing | 58.181 | 0.939 | 0.102 | |
| 11 | A. Tagliani | RSPORTS | 58.198 | 0.956 | 0.017 | |
| 12 | D. Clarke | Minardi Team USA | 58.355 | 1.113 | 0.157 | |
| 13 | R. Doornbos | Minardi Team USA | 58.569 | 1.327 | 0.214 | |
| 14 | M. Halliday | Conquest Racing | 58.577 | 1.335 | 0.008 | |
| 15 | R. Dalziel | Pacific Coast Motorsports | 58.835 | 1.593 | 0.258 | |
| 16 | R. Moreno | Pacific Coast Motorsports | 59.231 | 1.989 | 0.396 | |
| 17 | K. Legge | Dale Coyne Racing | 59.257 | 2.015 | 0.026 | |
| Pos. = Position, Rnd. = Runden | ||||||
Houston
2. Qualifying
