Airports are located in Walla Walla (11 miles east of park), Pasco (45 miles west), and Pendleton, Oregon (45 miles south).
Driving directions from Walla:
- Get on Highway 12 going west
- 7 miles west of Walla Walla, turn left onto Swegle Road (there will be brown park signs: 1 mile before turnoff and at turnoff)
- Go over railroad tracks and then bridge (approximately 1/2 mile)
- Turn left onto park entrance road, almost immediately after bridge
- Road ends in circular parking area in front of Visitor Center