Southwest® flights from Kansas City to Seattle/Tacoma from $159

Promo Code

Low fares from Kansas City to Seattle/Tacoma

$

Kansas City (MCI)to

Seattle/Tacoma (SEA)
Depart: 09/26/2026

One-way

Basic

From
$159
Seen: 14 hrs ago

Kansas City (MCI)to

Seattle/Tacoma (SEA)
Depart: 09/12/2026

One-way

Basic

From
$169
Seen: 21 hrs ago

Kansas City (MCI)to

Seattle/Tacoma (SEA)
Depart: 09/21/2026

One-way

Basic

From
$169
Seen: 12 hrs ago

Kansas City (MCI)to

Seattle/Tacoma (SEA)
Depart: 11/03/2026

One-way

Basic

From
$169
Seen: 3 hrs ago

Kansas City (MCI)to

Seattle/Tacoma (SEA)
Depart: 11/05/2026

One-way

Basic

From
$169
Seen: 15 hrs ago

Kansas City (MCI)to

Seattle/Tacoma (SEA)
Depart: 11/19/2026

One-way

Basic

From
$169
Seen: 23 hrs ago

Looking for more low-fare flights?

Check out the Low Fare Calendar to find a fare that works for you. Just choose the month you want to depart and return, and we’ll show you the best fares available.

Find low fares

Explore flights from Kansas City to Seattle/Tacoma

Aug 2026
From$354*
Seen: 9 hrs ago
One Way/Basic
Sep 2026
From$159*
Seen: 14 hrs ago
One Way/Basic
Oct 2026
From$169*
Seen: 15 hrs ago
One Way/Basic
cmp-daily-histogram-bars-legend-min-price-aria-label $169
cmp-daily-histogram-bars-legend-max-price-aria-label $479
Displaying fares for August-2026
  • MCI–SEA, 08/22/2026: From $469
    22

    Sat

    AUG

  • MCI–SEA: cmp-view-offers-disclaimer. Find Offers
    23

    Sun

  • MCI–SEA, 08/24/2026: From $479
    24

    Mon

  • MCI–SEA, 08/25/2026: From $479
    25

    Tue

  • MCI–SEA: cmp-view-offers-disclaimer. Find Offers
    26

    Wed

  • MCI–SEA, 08/27/2026: From $354
    27

    Thu

  • MCI–SEA, 08/28/2026: From $354
    28

    Fri

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

    Sat

  • MCI–SEA, 08/30/2026: From $354
    30

    Sun

  • MCI–SEA, 08/31/2026: From $354
    31

    Mon

  • MCI–SEA: cmp-view-offers-disclaimer. Find Offers
    01

    Tue

    SEP

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

    Wed

  • MCI–SEA, 09/03/2026: From $354
    03

    Thu

  • MCI–SEA, 09/04/2026: From $305
    04

    Fri

  • MCI–SEA, 09/05/2026: From $284
    05

    Sat

  • MCI–SEA, 09/06/2026: From $284
    06

    Sun

  • MCI–SEA: cmp-view-offers-disclaimer. Find Offers
    07

    Mon

  • MCI–SEA: cmp-view-offers-disclaimer. Find Offers
    08

    Tue

  • MCI–SEA, 09/09/2026: From $284
    09

    Wed

  • MCI–SEA: cmp-view-offers-disclaimer. Find Offers
    10

    Thu

  • MCI–SEA, 09/11/2026: From $183
    11

    Fri

  • MCI–SEA, 09/12/2026: From $169
    12

    Sat

  • MCI–SEA, 09/13/2026: From $244
    13

    Sun

  • MCI–SEA: cmp-view-offers-disclaimer. Find Offers
    14

    Mon

  • MCI–SEA, 09/15/2026: From $169
    15

    Tue

  • MCI–SEA, 09/16/2026: From $183
    16

    Wed

  • MCI–SEA, 09/17/2026: From $228
    17

    Thu

  • MCI–SEA, 09/18/2026: From $183
    18

    Fri

  • MCI–SEA, 09/19/2026: From $174
    19

    Sat

  • MCI–SEA, 09/20/2026: From $284
    20

    Sun

  • MCI–SEA, 09/21/2026: From $169
    21

    Mon

    • Range$169-$479

    *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:
    Kansas City International Airport
    Arriving at:
    Seattle/Tacoma International Airport
    Distance:
    1489 miles

    Route Information

    150† 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 150 weekly flights from Kansas City to Seattle/Tacoma on Southwest Airlines.
    To find the lowest fares by day and time to fly Kansas City to Seattle/Tacoma with Southwest, check out our Low Fare Calendar.
    You can rent a car at Seattle/Tacoma International Airport book yours with your flight.
    Yes! Flights from Kansas City to Seattle/Tacoma—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.

    Explore Flights from Other Popular Origins

    Popular Flights from Kansas City