More trip calculations. vacation deals to PDX. Driving distance from Salem, OR to PDX. The total driving distance from Salem, OR to PDX is 60 miles or 97 kilometers. Your trip begins in Salem, Oregon. It ends at Portland International Airport in Portland, Oregon. If you are planning a road trip, you might also want to calculate the total driving time from Salem, OR to PDX so you can see when you'll arrive at your destination.