Alaska Airlines Flights from Chicago to Seattle

Lowest fares from Chicago to Seattle

Apr 2026
From$178*
Seen: 10 hours ago
Flight Type One Way|Saver
May 2026
From$128*
Seen: 10 hours ago
Flight Type One Way|Saver
Jun 2026
From$178*
Seen: 10 hours ago
Flight Type One Way|Saver
$128
$379
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    • Range$128-$379

    *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 Chicago to Seattle.*

    $
    keyboard_arrow_down
    One-way low-fare flights Chicago to Seattle.*
    From
    To
    Fare Type
    Dates
    Price
    Chicago (ORD)Seattle (SEA)One-way
    |
    Saver    		Depart: May 6, 2026

    From

    $128

    Seen: 3 minutes ago

    Chicago (ORD)Seattle (SEA)One-way
    |
    Saver    		Depart: May 20, 2026

    From

    $158

    Seen: 3 hours ago

    Chicago (ORD)Seattle (SEA)One-way
    |
    Saver    		Depart: May 19, 2026

    From

    $168

    Seen: 4 hours ago

    Chicago (ORD)Seattle (SEA)One-way
    |
    Saver    		Depart: May 13, 2026

    From

    $128

    Seen: 10 hours ago

    Chicago (ORD)Seattle (SEA)One-way
    |
    Saver    		Depart: May 12, 2026

    From

    $128

    Seen: 10 hours ago

    Chicago (ORD)Seattle (SEA)One-way
    |
    Saver    		Depart: May 16, 2026

    From

    $168

    Seen: 10 hours ago

    Chicago (ORD)Seattle (SEA)One-way
    |
    Saver    		Depart: May 9, 2026

    From

    $168

    Seen: 10 hours ago

    Chicago (ORD)Seattle (SEA)One-way
    |
    Saver    		Depart: Apr 28, 2026

    From

    $178

    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.

    Looking for more? See other routes