The journey from Tillamook to Washington, D.C. is a long-distance trip. The most practical way to travel is by driving to Portland (PDX) and taking a flight to one of the D.C. area airports (IAD, DCA, or BWI). This is a major trip requiring careful planning.
Total Distance: 4,400 km driving distance; 3,800 km straight-line air distance.
Book flights well in advance for better prices.
Spring or Fall for mild weather in both locations.