The trip from Deer Park to the Tri-Cities (Kennewick, Pasco, Richland) is approximately 220 kilometers. The most practical way to travel is by driving via US-395 South. This route takes you through Spokane and south through the rolling hills of eastern Washington. Expect a travel time of about 2.5 hours. This route is popular for regional travel.
Total Distance: 220 km driving, 190 km air distance.
Traffic can be heavy near the Spokane city center.
Spring and summer for the best driving conditions.