Cheap flights from Seattle-Tacoma to Portland International from $79
Updated 2026-08-08
129 miles great-circle distance, typically flown in 40m with 8 airlines operating direct service from Seattle-Tacoma (SEA) to Portland International (PDX). Fares on this corridor stay relatively stable across the year — booking 4–8 weeks ahead and choosing a midweek departure typically secures the best price.
Flying from Seattle-Tacoma
Seattle-Tacoma is Alaska Airlines' principal hub and Delta's growing Pacific Northwest base. The Link Light Rail Red Line runs from the airport's elevated station directly to Westlake in downtown Seattle in 38 minutes for $3.25 — possibly the easiest big-city transfer in the country. International long-haul has expanded sharply post-2023 with new direct service to Tokyo, Seoul, Frankfurt, London Heathrow and Auckland. Weather delays are rare; SEA is one of the most operationally reliable winter airports in the US.
Arriving in Portland
Portland International is 8 miles northeast of downtown Portland. MAX Light Rail Red Line runs from the airport's elevated station directly to Pioneer Square downtown in 38 minutes for $2.80. Fares are remarkably stable year-round — Portland sees less seasonal demand variance than most West Coast cities. Cheapest months are January and February; peak demand is mid-July through August.
Who flies SEA to PDX?
| Airline | IATA | Flight time | Cabin |
| Alaska Airlines | AS | 40m | Economy |
| Delta Air Lines | DL | 40m | Economy |
| Southwest Airlines | WN | 40m | Economy |
| American Airlines | AA | 40m | Economy |
| United Airlines | UA | 40m | Economy |
| JetBlue Airways | B6 | 40m | Economy |
| Spirit Airlines | NK | 40m | Economy |
| Hawaiian Airlines | HA | 40m | Economy |
8 carriers fly direct on this corridor. Frequencies vary by season — summer and winter holiday peaks see additional flights.
Seattle to Portland FAQs
Direct flights from Seattle-Tacoma (SEA) to Portland International (PDX) take approximately 40m for the 129-mile journey, plus 30–60 minutes of taxi, climb and descent. Total airport-to-airport time depends on cruise winds and air-traffic queueing on approach.
8 carriers operate direct service from Seattle-Tacoma (SEA) to Portland International (PDX): Alaska Airlines, Delta Air Lines, Southwest Airlines, American Airlines, United Airlines and 3 more. Frequencies vary by season and carrier — Alaska Airlines typically operates the highest weekly count on this corridor.
No — United States is domestic travel for US citizens. A US passport is not required for the 50 states, DC or US territories (Puerto Rico, US Virgin Islands, Guam, American Samoa, Northern Mariana Islands), though Real ID-compliant ID is required at TSA from May 2025.
Portland International (PDX) is the primary international airport for Portland. Allow 30–60 minutes for the ground transfer by train, express bus, taxi or rideshare depending on traffic and time of day. See the airport's official website for current train and shuttle timetables.