Olympia Airport (Olympia, WA) 0WN4 Cartes IFR (règles des instruments de vol)
| 1 | KOLM | Olympia Rgnl | Olympia, WA |
| 20 | KCLS | Chehalis-Centralia | Chehalis, WA |
| 22 | KSHN | Sanderson Fld | Shelton, WA |
| 26 | KTIW | Tacoma Narrows | Tacoma, WA |
| 30 | KPLU | Pierce County | Puyallup, WA |
