Alaska Airlines Flights from Portland to Seattle

Lowest fares from Portland to Seattle

Aug 2026
From$204*
Seen: 11 hours ago
Flight Type One Way|Saver
Sep 2026
From$129*
Seen: 11 hours ago
Flight Type One Way|Saver
Oct 2026
From$129*
Seen: 11 hours ago
Flight Type One Way|Saver
cmp-daily-histogram-bars-legend-min-price-aria-label $139
cmp-daily-histogram-bars-legend-max-price-aria-label $299
Displaying fares for August-2026
  • PDX–SEA, Aug 12, 2026: From $299
    12

    We

    AUG

  • PDX–SEA, Aug 13, 2026: From $299
    13

    Th

  • PDX–SEA, Aug 14, 2026: From $299
    14

    Fr

  • PDX–SEA, Aug 15, 2026: From $299
    15

    Sa

  • PDX–SEA, Aug 16, 2026: From $299
    16

    Su

  • PDX–SEA, Aug 17, 2026: From $299
    17

    Mo

  • PDX–SEA, Aug 18, 2026: From $264
    18

    Tu

  • PDX–SEA, Aug 19, 2026: From $264
    19

    We

  • PDX–SEA, Aug 20, 2026: From $264
    20

    Th

  • PDX–SEA, Aug 21, 2026: From $264
    21

    Fr

  • PDX–SEA, Aug 22, 2026: From $264
    22

    Sa

  • PDX–SEA, Aug 23, 2026: From $264
    23

    Su

  • PDX–SEA, Aug 24, 2026: From $264
    24

    Mo

  • PDX–SEA, Aug 25, 2026: From $204
    25

    Tu

  • PDX–SEA, Aug 26, 2026: From $204
    26

    We

  • PDX–SEA, Aug 27, 2026: From $204
    27

    Th

  • PDX–SEA, Aug 28, 2026: From $204
    28

    Fr

  • PDX–SEA, Aug 29, 2026: From $204
    29

    Sa

  • PDX–SEA, Aug 30, 2026: From $204
    30

    Su

  • PDX–SEA, Aug 31, 2026: From $204
    31

    Mo

  • PDX–SEA, Sep 1, 2026: From $174
    01

    Tu

    SEP

  • PDX–SEA, Sep 2, 2026: From $174
    02

    We

  • PDX–SEA, Sep 3, 2026: From $174
    03

    Th

  • PDX–SEA, Sep 4, 2026: From $174
    04

    Fr

  • PDX–SEA, Sep 5, 2026: From $174
    05

    Sa

  • PDX–SEA, Sep 6, 2026: From $174
    06

    Su

  • PDX–SEA, Sep 7, 2026: From $174
    07

    Mo

  • PDX–SEA, Sep 8, 2026: From $174
    08

    Tu

  • PDX–SEA, Sep 9, 2026: From $174
    09

    We

  • PDX–SEA, Sep 10, 2026: From $174
    10

    Th

  • PDX–SEA, Sep 11, 2026: From $139
    11

    Fr

    • Range$139-$299

    *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: Oct 27, 2026

    From

    $129

    Seen: 11 hours ago

    Portland (PDX)Seattle (SEA)One-way
    |
    Saver    		Depart: Nov 3, 2026

    From

    $129

    Seen: 11 hours ago

    Portland (PDX)Seattle (SEA)One-way
    |
    Saver    		Depart: Nov 10, 2026

    From

    $129

    Seen: 11 hours ago

    Portland (PDX)Seattle (SEA)One-way
    |
    Saver    		Depart: Sep 12, 2026

    From

    $129

    Seen: 11 hours ago

    Portland (PDX)Seattle (SEA)One-way
    |
    Saver    		Depart: Sep 16, 2026

    From

    $129

    Seen: 11 hours ago

    Portland (PDX)Seattle (SEA)One-way
    |
    Saver    		Depart: Sep 22, 2026

    From

    $129

    Seen: 11 hours ago

    Portland (PDX)Seattle (SEA)One-way
    |
    Saver    		Depart: Sep 26, 2026

    From

    $129

    Seen: 11 hours ago

    Portland (PDX)Seattle (SEA)One-way
    |
    Saver    		Depart: Oct 13, 2026

    From

    $129

    Seen: 11 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.

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