Southwest® flights from Kansas City to St. Louis from $102

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Low fares from Kansas City to St. Louis

$

Kansas City (MCI)to

St. Louis (STL)
Depart: 12/09/2026

One-way

Basic

From
$102
Seen: 22 hrs ago

Kansas City (MCI)to

St. Louis (STL)
Depart: 12/10/2026

One-way

Basic

From
$102
Seen: 22 hrs ago

Kansas City (MCI)to

St. Louis (STL)
Depart: 12/20/2026

One-way

Basic

From
$102
Seen: 5 hrs ago

Kansas City (MCI)to

St. Louis (STL)
Depart: 11/09/2026

One-way

Basic

From
$102
Seen: 13 hrs ago

Kansas City (MCI)to

St. Louis (STL)
Depart: 11/24/2026

One-way

Basic

From
$102
Seen: 11 hrs ago

Kansas City (MCI)to

St. Louis (STL)
Depart: 12/11/2026

One-way

Basic

From
$102
Seen: 18 hrs ago

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Explore flights from Kansas City to St. Louis

Oct 2026
From$402*
Seen: 10 hrs ago
One Way/Basic
Nov 2026
From$102*
Seen: 22 hrs ago
One Way/Basic
Dec 2026
From$102*
Seen: 8 hrs ago
One Way/Basic
cmp-daily-histogram-bars-legend-min-price-aria-label $102
cmp-daily-histogram-bars-legend-max-price-aria-label $463
Displaying fares for October-2026
  • MCI–STL, 10/23/2026: From $463
    23

    Fri

    OCT

  • MCI–STL, 10/24/2026: From $463
    24

    Sat

  • MCI–STL: cmp-view-offers-disclaimer. Find Offers
    25

    Sun

  • MCI–STL, 10/26/2026: From $463
    26

    Mon

  • MCI–STL, 10/27/2026: From $463
    27

    Tue

  • MCI–STL, 10/28/2026: From $463
    28

    Wed

  • MCI–STL, 10/29/2026: From $402
    29

    Thu

  • MCI–STL, 10/30/2026: From $402
    30

    Fri

  • MCI–STL: cmp-view-offers-disclaimer. Find Offers
    31

    Sat

  • MCI–STL, 11/01/2026: From $402
    01

    Sun

    NOV

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

    Mon

  • MCI–STL: cmp-view-offers-disclaimer. Find Offers
    03

    Tue

  • MCI–STL, 11/04/2026: From $402
    04

    Wed

  • MCI–STL, 11/05/2026: From $272
    05

    Thu

  • MCI–STL, 11/06/2026: From $272
    06

    Fri

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

    Sat

  • MCI–STL, 11/08/2026: From $272
    08

    Sun

  • MCI–STL, 11/09/2026: From $102
    09

    Mon

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

    Tue

  • MCI–STL, 11/11/2026: From $102
    11

    Wed

  • MCI–STL, 11/12/2026: From $102
    12

    Thu

  • MCI–STL, 11/13/2026: From $102
    13

    Fri

  • MCI–STL, 11/14/2026: From $102
    14

    Sat

  • MCI–STL: cmp-view-offers-disclaimer. Find Offers
    15

    Sun

  • MCI–STL, 11/16/2026: From $102
    16

    Mon

  • MCI–STL, 11/17/2026: From $102
    17

    Tue

  • MCI–STL: cmp-view-offers-disclaimer. Find Offers
    18

    Wed

  • MCI–STL, 11/19/2026: From $102
    19

    Thu

  • MCI–STL, 11/20/2026: From $196
    20

    Fri

  • MCI–STL, 11/21/2026: From $112
    21

    Sat

  • MCI–STL: cmp-view-offers-disclaimer. Find Offers
    22

    Sun

    • Range$102-$463

    *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:
    Lambert-St Louis Int'l Airport
    Average flight time:
    1 hour 3 minutes
    Distance:
    237 miles

    Questions we hear the most

    The average flight time from Kansas City to St. Louis is 1 hour 3 minutes.
    There are 156 weekly flights from Kansas City to St. Louis on Southwest Airlines.
    Yes, Southwest flies nonstop from Kansas City to St. Louis 3 times per day from Monday through Friday.
    Yes, Southwest flies nonstop from Kansas City to St. Louis 2 times per day on Saturdays and 3 times per day on Sundays.
    To find the lowest fares by day and time to fly Kansas City to St. Louis with Southwest, check out our Low Fare Calendar.
    You can rent a car at Lambert-St Louis Int'l Airport book yours with your flight.
    Yes! Flights from Kansas City to St. Louis—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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