Clasificación
2018
Pilotos
| Pos | Piloto | Puntos |
 US
|
US
|
US
|
US
|
US
|
US
|
 CA
|
US
|
US
|
US
|
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 |
P. O'Ward
Andretti Autosport
| 491 | 47 | 63 | 35 | 38/2 | 45 | 47/1 | 56 | 64 | 33/3 | 63 |
| 2 |
C. Herta
Andretti Autosport
| 447 | 35 | 48 | 61 | 45/1 | 56 | 38/2 | 30 | 50 | 40/2 | 44 |
| 3 |
S. Urrutia
Belardi Auto Racing
| 395 | 55 | 39 | 45 | 29/4 | 33 | 33/3 | 57 | 34 | 29/4 | 41 |
| 4 |
R. Norman
Andretti Autosport
| 345 | 37 | 31 | 34 | 26/5 | 32 | 29/4 | 41 | 39 | 45/1 | 31 |
| 5 |
V. Franzoni
Juncos Racing
| 341 | 38 | 44 | 37 | 20/8 | 54 | 23/6 | 29 | 34 | 23/6 | 39 |
| 6 |
A. Telitz
Belardi Auto Racing
| 316 | 19 | 32 | 47 | 23/6 | 39 | 21/7 | 41 | 28 | 26/5 | 40 |
| 7 |
D. Kellett
Andretti Autosport
| 299 | 28 | 30 | 29 | 35/3 | 29 | 26/5 | 34 | 39 | 21/7 | 28 |
| 8 |
S. Blackstock
Team Pelfrey
| 42 | 42 | - | - | - | - | - | - | - | - | - |
| 9 |
N. Alberico
Team Pelfrey
| 31 | 31 | - | - | - | - | - | - | - | - | - |
| 10 |
H. Choi
Juncos Racing
| 28 | - | - | - | - | - | - | - | - | - | 28 |
| 11 |
A. Celis Jr.
Juncos Racing
| 27 | - | 27 | - | - | - | - | - | - | - | - |
| 12 |
D. Hamilton
Team Pelfrey
| 21 | - | - | - | 21/7 | - | - | - | - | - | - |
