Cheap flights from Portland to North Seattle

View AU$104 flight on Sat, 13 Sep. 2025Opens in a new window

Popular airlines from Portland to North Seattle

  • Alaska Airlines

    Alaska Airlines

  • Delta

    Delta

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Cheap Flights from Portland (PDX) to North Seattle (SEA)

Prices were available within the past 7 days for one-way flights and round trip tickets for the period specified. Prices and availability are subject to change. Additional terms apply.

Alaska Airlines
Sat, 13 Sep. - Wed, 17 Sep.
PDX
Portland
SEA
Seattle
AU$148 Return, found 2 days ago
AU$148
Return
found 2 days ago
Select Alaska Airlines flight, departing Sat, 13 Sep. from Portland to Seattle, returning Wed, 17 Sep., priced at AU$148 found 2 days ago
Delta
Sat, 13 Sep. - Wed, 17 Sep.
PDX
Portland
SEA
Seattle
AU$148 Return, found 2 days ago
AU$148
Return
found 2 days ago
Select Delta flight, departing Sat, 13 Sep. from Portland to Seattle, returning Wed, 17 Sep., priced at AU$148 found 2 days ago
Delta
Sat, 13 Sep. - Wed, 17 Sep.
PDX
Portland
SEA
Seattle
AU$163 Return, found 2 days ago
AU$163
Return
found 2 days ago
Select Delta flight, departing Sat, 13 Sep. from Portland to Seattle, returning Wed, 17 Sep., priced at AU$163 found 2 days ago
Alaska Airlines
Tue, 9 Sep. - Tue, 16 Sep.
PDX
Portland
SEA
Seattle
AU$178 Return, found 1 day ago
AU$178
Return
found 1 day ago
Select Alaska Airlines flight, departing Tue, 9 Sep. from Portland to Seattle, returning Tue, 16 Sep., priced at AU$178 found 1 day ago
American Airlines
Sat, 13 Sep. - Wed, 17 Sep.
PDX
Portland
SEA
Seattle
AU$495 Return, found 2 days ago
AU$495
Return
found 2 days ago
Select American Airlines flight, departing Sat, 13 Sep. from Portland to Seattle, returning Wed, 17 Sep., priced at AU$495 found 2 days ago
United
Sat, 13 Sep. - Wed, 17 Sep.
PDX
Portland
SEA
Seattle
AU$1,054 Return, found 2 days ago
AU$1,054
Return
found 2 days ago
Select United flight, departing Sat, 13 Sep. from Portland to Seattle, returning Wed, 17 Sep., priced at AU$1,054 found 2 days ago

Find the cheapest month to fly from Portland (PDX) to Seattle (SEA)

January is typically the cheapest month to fly

From AU$117 - AU$333 per traveller.

Graph displaying average flight prices per month

*Available to Expedia members.