Flights from Portland (PDX) to Seattle (SEA) on Alaska Airlines

Lowest fares from Portland to Seattle

Sep 2026
From$234*
Seen: 13 hours ago
Flight Type One Way|Saver
Oct 2026
From$149*
Seen: 13 hours ago
Flight Type One Way|Saver
Nov 2026
From$149*
Seen: 13 hours ago
Flight Type One Way|Saver
cmp-daily-histogram-bars-legend-min-price-aria-label $149
cmp-daily-histogram-bars-legend-max-price-aria-label $329
Displaying fares for September-2026
  • PDX–SEA, Sep 14, 2026: From $329
    14

    Mo

    SEP

  • PDX–SEA, Sep 15, 2026: From $329
    15

    Tu

  • PDX–SEA, Sep 16, 2026: From $329
    16

    We

  • PDX–SEA, Sep 17, 2026: From $329
    17

    Th

  • PDX–SEA, Sep 18, 2026: From $329
    18

    Fr

  • PDX–SEA, Sep 19, 2026: From $329
    19

    Sa

  • PDX–SEA, Sep 20, 2026: From $294
    20

    Su

  • PDX–SEA, Sep 21, 2026: From $294
    21

    Mo

  • PDX–SEA, Sep 22, 2026: From $294
    22

    Tu

  • PDX–SEA, Sep 23, 2026: From $294
    23

    We

  • PDX–SEA, Sep 24, 2026: From $294
    24

    Th

  • PDX–SEA, Sep 25, 2026: From $294
    25

    Fr

  • PDX–SEA, Sep 26, 2026: From $294
    26

    Sa

  • PDX–SEA, Sep 27, 2026: From $234
    27

    Su

  • PDX–SEA, Sep 28, 2026: From $234
    28

    Mo

  • PDX–SEA, Sep 29, 2026: From $234
    29

    Tu

  • PDX–SEA, Sep 30, 2026: From $234
    30

    We

  • PDX–SEA, Oct 1, 2026: From $234
    01

    Th

    OCT

  • PDX–SEA, Oct 2, 2026: From $234
    02

    Fr

  • PDX–SEA, Oct 3, 2026: From $234
    03

    Sa

  • PDX–SEA, Oct 4, 2026: From $204
    04

    Su

  • PDX–SEA, Oct 5, 2026: From $204
    05

    Mo

  • PDX–SEA, Oct 6, 2026: From $204
    06

    Tu

  • PDX–SEA, Oct 7, 2026: From $204
    07

    We

  • PDX–SEA, Oct 8, 2026: From $204
    08

    Th

  • PDX–SEA, Oct 9, 2026: From $204
    09

    Fr

  • PDX–SEA, Oct 10, 2026: From $204
    10

    Sa

  • PDX–SEA, Oct 11, 2026: From $204
    11

    Su

  • PDX–SEA, Oct 12, 2026: From $204
    12

    Mo

  • PDX–SEA, Oct 13, 2026: From $149
    13

    Tu

    • Range$149-$329

    *Displayed prices have been available within the past 24 hours and may not be available at the time of booking. Fares listed may be Saver fares, which is our most restrictive fare option and subject to additional restrictions. For roundtrip journeys, the price displayed—available within the past 24 hours—is the aggregate of the lowest available fare each way. Additional baggage charges and fees for optional products and services may apply. Other terms and conditions may apply.

    One-way low-fare flights Portland to Seattle.*

    $
    keyboard_arrow_down
    One-way low-fare flights Portland to Seattle.*
    From
    To
    Fare Type
    Dates
    Price
    Portland (PDX)Seattle (SEA)One-way
    |
    Saver    		Depart: Feb 10, 2027

    From

    $149

    Seen: 13 hours ago

    Portland (PDX)Seattle (SEA)One-way
    |
    Saver    		Depart: Feb 20, 2027

    From

    $149

    Seen: 13 hours ago

    Portland (PDX)Seattle (SEA)One-way
    |
    Saver    		Depart: Mar 2, 2027

    From

    $149

    Seen: 13 hours ago

    Portland (PDX)Seattle (SEA)One-way
    |
    Saver    		Depart: Mar 3, 2027

    From

    $149

    Seen: 13 hours ago

    Portland (PDX)Seattle (SEA)One-way
    |
    Saver    		Depart: Mar 6, 2027

    From

    $149

    Seen: 13 hours ago

    Portland (PDX)Seattle (SEA)One-way
    |
    Saver    		Depart: Mar 9, 2027

    From

    $149

    Seen: 13 hours ago

    Portland (PDX)Seattle (SEA)One-way
    |
    Saver    		Depart: Jan 5, 2027

    From

    $149

    Seen: 13 hours ago

    Portland (PDX)Seattle (SEA)One-way
    |
    Saver    		Depart: Jan 13, 2027

    From

    $149

    Seen: 13 hours ago

    *Displayed prices have been available within the past 24 hours and may not be available at the time of booking. Fares listed may be Saver fares, which is our most restrictive fare option and subject to additional restrictions. For roundtrip journeys, the price displayed—available within the past 24 hours—is the aggregate of the lowest available fare each way. Additional baggage charges and fees for optional products and services may apply. Other terms and conditions may apply.

    Frequently Asked Questions on flights from Portland (PDX) to Seattle (SEA)

    When is the best time to book a flight from Portland to Seattle?

    Want to find the lowest fares by day and time flying from Portland to Seattle on Alaska Airlines or Hawaiian Airlines? Check out our flight search widget.Frequently Asked Questions on flights from Portland (PDX) to Seattle (SEA)

    Can I earn points on my flight to Seattle?

    Yes, with Atmosâ„¢ Rewards you can earn points on flights to 1000+ destinations worldwide through the growing network of Alaska and Hawaiian Airlines. Not an Atmosâ„¢ Rewards member yet? Learn more and join today.

    Can I rent a car when I arrive at Seattle/Tacoma International Airport?

    Yes, you can rent a car at Seattle/Tacoma International Airport. Check availability and book now

    Where can I find the status of my flight to Seattle

    You can check the status of your upcoming Alaska Airlines on our flight schedule page.

    Where can I find answers to questions about flying with Alaska Airlines?

    Visit the Alaska Airlines Help Center to quickly browse our help pages by category to find the information you need.

    Can I change or cancel my Alaska Airlines flight to Seattle?

    Yes, you can review, modify, or cancel a reservation from our Manage Your Reservation tool. You can learn more about our policy for changing or cancelling a reservation here. 

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