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

Lowest fares from Seattle to Chicago

Sep 2026
From$244*
Seen: 1 day ago
Flight Type One Way|Saver
Oct 2026
From$172*
Seen: 3 hours ago
Flight Type One Way|Saver
Nov 2026
From$141*
Seen: 1 hour ago
Flight Type One Way|Saver
cmp-daily-histogram-bars-legend-min-price-aria-label $172
cmp-daily-histogram-bars-legend-max-price-aria-label $329
Displaying fares for September-2026
  • SEA–ORD, Sep 14, 2026: From $244
    14

    Mo

    SEP

  • SEA–ORD, Sep 15, 2026: From $244
    15

    Tu

  • SEA–ORD, Sep 16, 2026: From $244
    16

    We

  • SEA–ORD, Sep 17, 2026: From $244
    17

    Th

  • SEA–ORD, Sep 18, 2026: From $244
    18

    Fr

  • SEA–ORD, Sep 19, 2026: From $244
    19

    Sa

  • SEA–ORD, Sep 20, 2026: From $244
    20

    Su

  • SEA–ORD, Sep 21, 2026: From $244
    21

    Mo

  • SEA–ORD, Sep 22, 2026: From $244
    22

    Tu

  • SEA–ORD, Sep 23, 2026: From $244
    23

    We

  • SEA–ORD, Sep 24, 2026: From $244
    24

    Th

  • SEA–ORD, Sep 25, 2026: From $244
    25

    Fr

  • SEA–ORD, Sep 26, 2026: From $244
    26

    Sa

  • SEA–ORD, Sep 27, 2026: From $244
    27

    Su

  • SEA–ORD, Sep 28, 2026: From $244
    28

    Mo

  • SEA–ORD, Sep 29, 2026: From $244
    29

    Tu

  • SEA–ORD, Sep 30, 2026: From $244
    30

    We

  • SEA–ORD, Oct 1, 2026: From $271
    01

    Th

    OCT

  • SEA–ORD, Oct 2, 2026: From $244
    02

    Fr

  • SEA–ORD, Oct 3, 2026: From $244
    03

    Sa

  • SEA–ORD, Oct 4, 2026: From $229
    04

    Su

  • SEA–ORD, Oct 5, 2026: From $189
    05

    Mo

  • SEA–ORD, Oct 6, 2026: From $172
    06

    Tu

  • SEA–ORD, Oct 7, 2026: From $209
    07

    We

  • SEA–ORD, Oct 8, 2026: From $329
    08

    Th

  • SEA–ORD, Oct 9, 2026: From $259
    09

    Fr

  • SEA–ORD, Oct 10, 2026: From $189
    10

    Sa

  • SEA–ORD, Oct 11, 2026: From $229
    11

    Su

  • SEA–ORD, Oct 12, 2026: From $189
    12

    Mo

  • SEA–ORD, Oct 13, 2026: From $179
    13

    Tu

    • Range$172-$329

    *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 Seattle to Chicago.*

    $
    keyboard_arrow_down
    One-way low-fare flights Seattle to Chicago.*
    From
    To
    Fare Type
    Dates
    Price
    Seattle (SEA)Chicago (ORD)One-way
    |
    Saver    		Depart: Dec 15, 2026

    From

    $189

    Seen: 14 hours ago

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

    From

    $189

    Seen: 14 hours ago

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

    From

    $189

    Seen: 14 hours ago

    Seattle (SEA)Chicago (ORD)One-way
    |
    Saver    		Depart: Jan 13, 2027

    From

    $141

    Seen: 4 hours ago

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

    From

    $141

    Seen: 1 hour ago

    Seattle (SEA)Chicago (ORD)One-way
    |
    Saver    		Depart: Oct 6, 2026

    From

    $172

    Seen: 3 hours ago

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

    From

    $179

    Seen: 1 hour ago

    Seattle (SEA)Chicago (ORD)One-way
    |
    Saver    		Depart: Oct 23, 2026

    From

    $183

    Seen: 4 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 Seattle (SEA) to Chicago (ORD)

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

    Want to find the lowest fares by day and time flying from Seattle to Chicago on Alaska Airlines or Hawaiian Airlines? Check out our flight search widget.Frequently Asked Questions on flights from Seattle (SEA) to Chicago (ORD)

    Can I earn points on my flight to Chicago?

    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 O'Hare International Airport?

    Yes, you can rent a car at O'Hare International Airport. Check availability and book now

    Where can I find the status of my flight to Chicago

    You can check the status of your upcoming Alaska Airlines 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 Chicago?

    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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