Southwest, Alaska Airlines, Delta, American Airlines and various other airlines have round-trip flights from Phoenix (PHX) to Seattle or Portland, Oregon (SEA, PDX) for $91-$147, NONSTOP. Flights April to May. Origin/Destination reversible.
Carrier will depend on date and destination selected.
Seattle fares have good weekend availability. Portland fares do not. Portland’s cheapest fares depart on Tuesdays, Wednesdays, and Saturdays.
Portland fares start at $147, Seattle fares are less than $129.
Click for more details and booking links Nonstop Flights: Phoenix to/from Seattle or Portland, Oregon $91-$147 round-trip [April-May] – Southwest / Alaska Airlines / Delta / American Airlines