Nonstop flights from Portland to Seattle
2 airlines fly this route, with up to 20 flights a day.
PDXPortland International
129 mi · 137 flights a week
SEASeattle-Tacoma International
When they leave
Portland time5:00a8:30pFirst departure 5:00 AM, last 8:30 PM
10 in the morning, 5:00 AM to 11:22 AM, then five in the afternoon, 12:03 PM to 3:30 PM, then five in the evening, 5:30 PM to 8:30 PM.
Every flight
Earliest first
Schedules last checked Sep 19, 2026. Times are local.
Flying from Portland to Seattle
Alaska Airlines flies most often, 11 to 12 times a day on the Embraer 175 and Boeing 737. Delta Air Lines flies 7 to 8 times a day on the Embraer 175.
Flights run every day of the week, from 18 on Saturdays to 20 on Mondays, Wednesdays, Thursdays, Fridays and Sundays. The first arrival in Seattle is at 5:53 AM and the last at 9:38 PM. The flight covers 129 miles.
Flying back, Seattle to Portland has 137 nonstop flights a week.
Return flights
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Find the cheapest day to fly from Portland to Seattle.
Schedules as of Oct 9, 2026.