If you’re coming Tacoma, you will want to make your way to I-5 N by using either I-705 S, route 7, route 16 or another on ramp onto the interstate. When you’ve merged onto I-5 N heading towards SeaTac continue for about 17 miles until you reach exit 151 at which point you will get off that exit, and take a left onto Military Road S. Take another left at S 200th Street and turn right at the intersection for route 99/International Boulevard for about 1 mile and Jiffy Seattle Airport Parking will be on your right.