Cheap flights from Portland to Herron Island

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

Popular airlines from Portland to Herron Island

  • Plan, book, fly with confidence

  • trending down icon

    Be in the know

    Get alerts if flight prices drop or rise*
  • bex rewards loyalty icon

    Book smarter

    Save up to 35% on select hotels after you book a flight*
  • payments icon

    Earn twice

    Earn your airline miles on top of our rewards
    Sign in

Cheap Flights from Portland (PDX) to Herron Island (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 16 hours ago
AU$148
Return
found 16 hours ago
Select Alaska Airlines flight, departing Sat, 13 Sep. from Portland to Seattle, returning Wed, 17 Sep., priced at AU$148 found 16 hours ago
Delta
Sat, 13 Sep. - Wed, 17 Sep.
PDX
Portland
SEA
Seattle
AU$148 Return, found 16 hours ago
AU$148
Return
found 16 hours ago
Select Delta flight, departing Sat, 13 Sep. from Portland to Seattle, returning Wed, 17 Sep., priced at AU$148 found 16 hours ago
Delta
Sat, 13 Sep. - Wed, 17 Sep.
PDX
Portland
SEA
Seattle
AU$163 Return, found 16 hours ago
AU$163
Return
found 16 hours ago
Select Delta flight, departing Sat, 13 Sep. from Portland to Seattle, returning Wed, 17 Sep., priced at AU$163 found 16 hours ago
Delta
Sat, 13 Sep. - Wed, 17 Sep.
PDX
Portland
SEA
Seattle
AU$178 Return, found 16 hours ago
AU$178
Return
found 16 hours ago
Select Delta flight, departing Sat, 13 Sep. from Portland to Seattle, returning Wed, 17 Sep., priced at AU$178 found 16 hours ago
American Airlines
Sat, 13 Sep. - Wed, 17 Sep.
PDX
Portland
SEA
Seattle
AU$495 Return, found 16 hours ago
AU$495
Return
found 16 hours ago
Select American Airlines flight, departing Sat, 13 Sep. from Portland to Seattle, returning Wed, 17 Sep., priced at AU$495 found 16 hours ago
United
Sat, 13 Sep. - Wed, 17 Sep.
PDX
Portland
SEA
Seattle
AU$1,054 Return, found 16 hours ago
AU$1,054
Return
found 16 hours ago
Select United flight, departing Sat, 13 Sep. from Portland to Seattle, returning Wed, 17 Sep., priced at AU$1,054 found 16 hours 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.