Watson Airport (Kahlotus, WA) 3WA4 Cartes IFR (règles des instruments de vol)
| 39 | KPSC | Tri-Cities | Pasco, WA |
| 43 | KRLD | Richland | Richland, WA |
| 46 | KALW | Walla Walla Rgnl | Walla Walla, WA |
| 47 | KMWH | Grant County Intl | Moses Lake, WA |
| 59 | KEPH | Ephrata Muni | Ephrata, WA |
