how far is portland from seattle

The distance from Portland to Seattle is approximately 173 to 178 miles by road, depending on the specific route taken, mainly along Interstate 5. The driving distance takes about 3 to 3.5 hours under typical traffic conditions. The straight-line air distance between Portland International Airport and Seattle-Tacoma International Airport is about 129 miles (208 kilometers), which translates to a flight time of around 45 to 60 minutes.