Alaska Airlines Flights from Saint Louis to Portland

Lowest fares from Saint Louis to Portland

Apr 2026
From$189*
Seen: 10 hours ago
Flight Type One Way|Saver
May 2026
From$139*
Seen: 10 hours ago
Flight Type One Way|Saver
Jun 2026
From$139*
Seen: 10 hours ago
Flight Type One Way|Saver
$139
$474
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    • Range$139-$474

    *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: Jul 29, 2026

    From

    $125

    Seen: 1 hour ago

    Saint Louis (STL)Portland (PDX)One-way
    |
    Saver    		Depart: May 27, 2026

    From

    $139

    Seen: 10 hours ago

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

    From

    $139

    Seen: 10 hours ago

    Saint Louis (STL)Portland (PDX)One-way
    |
    Saver    		Depart: Jun 6, 2026

    From

    $139

    Seen: 10 hours ago

    Saint Louis (STL)Portland (PDX)One-way
    |
    Saver    		Depart: May 13, 2026

    From

    $139

    Seen: 10 hours ago

    Saint Louis (STL)Portland (PDX)One-way
    |
    Saver    		Depart: Jun 5, 2026

    From

    $145

    Seen: 10 hours ago

    Saint Louis (STL)Portland (PDX)One-way
    |
    Saver    		Depart: Aug 25, 2026

    From

    $145

    Seen: 10 hours ago

    Saint Louis (STL)Portland (PDX)One-way
    |
    Saver    		Depart: Sep 1, 2026

    From

    $145

    Seen: 10 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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