Flights from Chicago (ORD) to Seattle (SEA) on Alaska Airlines

Lowest fares from Chicago to Seattle

Nov 2026
From$269*
Seen: 18 hours ago
Flight Type One Way|Saver
Dec 2026
From$124*
Seen: 18 hours ago
Flight Type One Way|Saver
Jan 2027
From$150*
Seen: 18 hours ago
Flight Type One Way|Saver
cmp-daily-histogram-bars-legend-min-price-aria-label $124
cmp-daily-histogram-bars-legend-max-price-aria-label $804
Displaying fares for November-2026
  • ORD–SEA, Nov 11, 2026: From $269
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  • ORD–SEA, Nov 12, 2026: From $269
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  • ORD–SEA, Nov 13, 2026: From $269
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  • ORD–SEA, Nov 14, 2026: From $269
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  • ORD–SEA, Nov 15, 2026: From $269
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  • ORD–SEA, Nov 16, 2026: From $269
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  • ORD–SEA, Nov 17, 2026: From $269
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  • ORD–SEA, Nov 18, 2026: From $269
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  • ORD–SEA, Nov 19, 2026: From $269
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  • ORD–SEA, Nov 20, 2026: From $269
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  • ORD–SEA, Nov 21, 2026: From $269
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  • ORD–SEA, Nov 22, 2026: From $269
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  • ORD–SEA, Nov 23, 2026: From $269
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  • ORD–SEA, Nov 24, 2026: From $269
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  • ORD–SEA, Nov 25, 2026: From $269
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  • ORD–SEA, Nov 26, 2026: From $269
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  • ORD–SEA, Nov 27, 2026: From $269
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    Fr

  • ORD–SEA, Nov 28, 2026: From $549
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    Sa

  • ORD–SEA, Nov 29, 2026: From $804
    29

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  • ORD–SEA, Nov 30, 2026: From $549
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  • ORD–SEA, Dec 1, 2026: From $150
    01

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    DEC

  • ORD–SEA, Dec 2, 2026: From $124
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  • ORD–SEA, Dec 3, 2026: From $124
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  • ORD–SEA, Dec 4, 2026: From $124
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  • ORD–SEA, Dec 5, 2026: From $124
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  • ORD–SEA, Dec 6, 2026: From $124
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  • ORD–SEA, Dec 7, 2026: From $124
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  • ORD–SEA, Dec 8, 2026: From $124
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  • ORD–SEA, Dec 9, 2026: From $124
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  • ORD–SEA, Dec 10, 2026: From $124
    10

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    • Range$124-$804

    *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: Dec 15, 2026

    From

    $124

    Seen: 18 hours ago

    Chicago (ORD)Seattle (SEA)One-way
    |
    Saver    		Depart: Dec 17, 2026

    From

    $124

    Seen: 18 hours ago

    Chicago (ORD)Seattle (SEA)One-way
    |
    Saver    		Depart: Dec 3, 2026

    From

    $124

    Seen: 18 hours ago

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

    From

    $124

    Seen: 18 hours ago

    Chicago (ORD)Seattle (SEA)One-way
    |
    Saver    		Depart: Dec 10, 2026

    From

    $124

    Seen: 18 hours ago

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

    From

    $124

    Seen: 18 hours ago

    Chicago (ORD)Seattle (SEA)One-way
    |
    Saver    		Depart: Dec 14, 2026

    From

    $124

    Seen: 18 hours ago

    Chicago (ORD)Seattle (SEA)One-way
    |
    Saver    		Depart: Dec 4, 2026

    From

    $124

    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.

    Frequently Asked Questions on flights from Chicago (ORD) to Seattle (SEA)

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

    Want to find the lowest fares by day and time flying from Chicago to Seattle on Alaska Airlines or Hawaiian Airlines? Check out our flight search widget.

    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 flight 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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