Alaska Airlines Flights from Saint Louis to Portland

Lowest fares from Saint Louis to Portland

Aug 2026
From$289*
Seen: 18 hours ago
Flight Type One Way|Saver
Sep 2026
From$159*
Seen: 18 hours ago
Flight Type One Way|Saver
Oct 2026
From$169*
Seen: 18 hours ago
Flight Type One Way|Saver
cmp-daily-histogram-bars-legend-min-price-aria-label $159
cmp-daily-histogram-bars-legend-max-price-aria-label $424
Displaying fares for August-2026
  • STL–PDX, Aug 14, 2026: From $424
    14

    Fr

    AUG

  • STL–PDX, Aug 15, 2026: From $424
    15

    Sa

  • STL–PDX, Aug 16, 2026: From $424
    16

    Su

  • STL–PDX, Aug 17, 2026: From $424
    17

    Mo

  • STL–PDX, Aug 18, 2026: From $424
    18

    Tu

  • STL–PDX, Aug 19, 2026: From $359
    19

    We

  • STL–PDX, Aug 20, 2026: From $359
    20

    Th

  • STL–PDX, Aug 21, 2026: From $359
    21

    Fr

  • STL–PDX, Aug 22, 2026: From $359
    22

    Sa

  • STL–PDX, Aug 23, 2026: From $359
    23

    Su

  • STL–PDX, Aug 24, 2026: From $359
    24

    Mo

  • STL–PDX, Aug 25, 2026: From $359
    25

    Tu

  • STL–PDX, Aug 26, 2026: From $289
    26

    We

  • STL–PDX, Aug 27, 2026: From $289
    27

    Th

  • STL–PDX, Aug 28, 2026: From $289
    28

    Fr

  • STL–PDX, Aug 29, 2026: From $289
    29

    Sa

  • STL–PDX, Aug 30, 2026: From $289
    30

    Su

  • STL–PDX, Aug 31, 2026: From $289
    31

    Mo

  • STL–PDX, Sep 1, 2026: From $289
    01

    Tu

    SEP

  • STL–PDX, Sep 2, 2026: From $204
    02

    We

  • STL–PDX, Sep 3, 2026: From $204
    03

    Th

  • STL–PDX, Sep 4, 2026: From $204
    04

    Fr

  • STL–PDX, Sep 5, 2026: From $204
    05

    Sa

  • STL–PDX, Sep 6, 2026: From $204
    06

    Su

  • STL–PDX, Sep 7, 2026: From $204
    07

    Mo

  • STL–PDX, Sep 8, 2026: From $204
    08

    Tu

  • STL–PDX, Sep 9, 2026: From $204
    09

    We

  • STL–PDX, Sep 10, 2026: From $204
    10

    Th

  • STL–PDX, Sep 11, 2026: From $204
    11

    Fr

  • STL–PDX, Sep 12, 2026: From $159
    12

    Sa

  • STL–PDX, Sep 13, 2026: From $254
    13

    Su

    • Range$159-$424

    *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 Saint Louis to Portland.*

    $
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    One-way low-fare flights Saint Louis to Portland.*
    From
    To
    Fare Type
    Dates
    Price
    Saint Louis (STL)Portland (PDX)One-way
    |
    Saver    		Depart: Sep 22, 2026

    From

    $159

    Seen: 18 hours ago

    Saint Louis (STL)Portland (PDX)One-way
    |
    Saver    		Depart: Sep 15, 2026

    From

    $159

    Seen: 18 hours ago

    Saint Louis (STL)Portland (PDX)One-way
    |
    Saver    		Depart: Sep 23, 2026

    From

    $159

    Seen: 18 hours ago

    Saint Louis (STL)Portland (PDX)One-way
    |
    Saver    		Depart: Sep 26, 2026

    From

    $159

    Seen: 18 hours ago

    Saint Louis (STL)Portland (PDX)One-way
    |
    Saver    		Depart: Sep 29, 2026

    From

    $159

    Seen: 18 hours ago

    Saint Louis (STL)Portland (PDX)One-way
    |
    Saver    		Depart: Sep 30, 2026

    From

    $159

    Seen: 18 hours ago

    Saint Louis (STL)Portland (PDX)One-way
    |
    Saver    		Depart: Sep 19, 2026

    From

    $159

    Seen: 18 hours ago

    Saint Louis (STL)Portland (PDX)One-way
    |
    Saver    		Depart: Sep 12, 2026

    From

    $159

    Seen: 18 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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