Southwest® flights from Seattle/Tacoma to Chicago (O'Hare)

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Low fares from Seattle/Tacoma to Chicago (O'Hare)

$

Seattle/Tacoma (SEA)to

Chicago (Midway) (MDW)
Depart: 10/28/2026

One-way

Basic

From
$139
Seen: 21 hrs ago

Seattle/Tacoma (SEA)to

Chicago (Midway) (MDW)
Depart: 11/11/2026

One-way

Basic

From
$139
Seen: 15 hrs ago

Seattle/Tacoma (SEA)to

Chicago (Midway) (MDW)
Depart: 11/18/2026

One-way

Basic

From
$139
Seen: 18 hrs ago

Seattle/Tacoma (SEA)to

Chicago (Midway) (MDW)
Depart: 09/23/2026

One-way

Basic

From
$139
Seen: 14 hrs ago

Seattle/Tacoma (SEA)to

Chicago (Midway) (MDW)
Depart: 09/22/2026

One-way

Basic

From
$139
Seen: 15 hrs ago

Seattle/Tacoma (SEA)to

Chicago (Midway) (MDW)
Depart: 09/16/2026

One-way

Basic

From
$139
Seen: 15 hrs ago

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Explore flights from Seattle/Tacoma to Chicago (O'Hare)

Aug 2026
From$224*
Seen: 7 hrs ago
One Way/Basic
Sep 2026
From$139*
Seen: 14 hrs ago
One Way/Basic
Oct 2026
From$139*
Seen: 2 hrs ago
One Way/Basic
cmp-daily-histogram-bars-legend-min-price-aria-label $139
cmp-daily-histogram-bars-legend-max-price-aria-label $279
Displaying fares for August-2026
  • SEA–MDW, 08/25/2026: From $224
    25

    Tue

    AUG

  • SEA–MDW, 08/26/2026: From $224
    26

    Wed

  • SEA–MDW, 08/27/2026: From $224
    27

    Thu

  • SEA–MDW, 08/28/2026: From $224
    28

    Fri

  • SEA–MDW: cmp-view-offers-disclaimer. Find Offers
    29

    Sat

  • SEA–MDW, 08/30/2026: From $249
    30

    Sun

  • SEA–MDW, 08/31/2026: From $224
    31

    Mon

  • SEA–MDW, 09/01/2026: From $224
    01

    Tue

    SEP

  • SEA–MDW: cmp-view-offers-disclaimer. Find Offers
    02

    Wed

  • SEA–MDW, 09/03/2026: From $249
    03

    Thu

  • SEA–MDW, 09/04/2026: From $224
    04

    Fri

  • SEA–MDW, 09/05/2026: From $205
    05

    Sat

  • SEA–MDW, 09/06/2026: From $215
    06

    Sun

  • SEA–MDW, 09/07/2026: From $279
    07

    Mon

  • SEA–MDW, 09/08/2026: From $224
    08

    Tue

  • SEA–MDW, 09/09/2026: From $205
    09

    Wed

  • SEA–MDW, 09/10/2026: From $205
    10

    Thu

  • SEA–MDW, 09/11/2026: From $205
    11

    Fri

  • SEA–MDW, 09/12/2026: From $205
    12

    Sat

  • SEA–MDW, 09/13/2026: From $224
    13

    Sun

  • SEA–MDW, 09/14/2026: From $159
    14

    Mon

  • SEA–MDW: cmp-view-offers-disclaimer. Find Offers
    15

    Tue

  • SEA–MDW, 09/16/2026: From $139
    16

    Wed

  • SEA–MDW, 09/17/2026: From $149
    17

    Thu

  • SEA–MDW, 09/18/2026: From $179
    18

    Fri

  • SEA–MDW, 09/19/2026: From $139
    19

    Sat

  • SEA–MDW: cmp-view-offers-disclaimer. Find Offers
    20

    Sun

  • SEA–MDW, 09/21/2026: From $159
    21

    Mon

  • SEA–MDW, 09/22/2026: From $139
    22

    Tue

  • SEA–MDW, 09/23/2026: From $139
    23

    Wed

  • SEA–MDW, 09/24/2026: From $149
    24

    Thu

    • Range$139-$279

    *Fares displayed have been collected within the last 24 hours and may no longer be available at time of booking. Additional fees and charges for optional products and services may apply. Modifying this information may result in a different fare. To find the most updated fare, please visit Southwest.com. Fares listed are Basic, which are subject to additional terms and conditions.

    Flight Details

    Departing from:
    Seattle/Tacoma International Airport
    Arriving at:
    O'Hare International Airport
    Distance:
    1721 miles

    Route Information

    71† Weekly flights

    † Weekly flights based on DOT published scheduled average flights Monday through Sunday between 9/1/2025 and 9/30/2025. Note: route may not operate every day of the week.

    ‡ Nonstop flights based on DOT published scheduled average flights Monday through Sunday between 9/1/2025 and 9/30/2025.

    Questions we hear the most

    There are 71 weekly flights from Seattle/Tacoma to Chicago (O'Hare) on Southwest Airlines.
    To find the lowest fares by day and time to fly Seattle/Tacoma to Chicago (O'Hare) with Southwest, check out our Low Fare Calendar.
    You can rent a car at O'Hare International Airport book yours with your flight.
    Yes! Flights from Seattle/Tacoma to Chicago (O'Hare)—or from here or there to anywhere—can be changed with no change fees. Fare difference may apply.
    Check the status of your upcoming Southwest flight.
    Check out the Southwest Airlines® Help Center for answers about everything Southwest.

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