There are 134.29 miles from Seattle–Tacoma International Airport (SEA) to Portland in south direction and 164 miles (263.93 kilometers) by car, following the I-5 S route.
SEA Airport and Portland are 2 hours 41 mins far apart, if you drive non-stop.
This is the fastest route from SEA Airport to Portland, OR. The halfway point is Chehalis, WA.
SEA Airport and Portland, OR are in the same time zone (PDT). Current time in both locations is 6:46 pm.
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