Southwest® flights from Kansas City to St. Louis from $105

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Low fares from Kansas City to St. Louis

$

Kansas City (MCI)to

St. Louis (STL)
Depart: 01/06/2027

One-way

Basic

From
$105
Seen: 23 hrs ago

Kansas City (MCI)to

St. Louis (STL)
Depart: 01/09/2027

One-way

Basic

From
$105
Seen: 23 hrs ago

Kansas City (MCI)to

St. Louis (STL)
Depart: 12/21/2026

One-way

Basic

From
$105
Seen: 22 hrs ago

Kansas City (MCI)to

St. Louis (STL)
Depart: 12/23/2026

One-way

Basic

From
$105
Seen: 22 hrs ago

Kansas City (MCI)to

St. Louis (STL)
Depart: 01/11/2027

One-way

Basic

From
$105
Seen: 18 hrs ago

Kansas City (MCI)to

St. Louis (STL)
Depart: 01/21/2027

One-way

Basic

From
$105
Seen: 20 hrs ago

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Explore flights from Kansas City to St. Louis

Nov 2026
From$277*
Seen: 8 hrs ago
One Way/Basic
Dec 2026
From$105*
Seen: 9 hrs ago
One Way/Basic
Jan 2027
From$105*
Seen: 20 hrs ago
One Way/Basic
cmp-daily-histogram-bars-legend-min-price-aria-label $105
cmp-daily-histogram-bars-legend-max-price-aria-label $468
Displaying fares for November-2026
  • MCI–STL, 11/12/2026: From $468
    12

    Thu

    NOV

  • MCI–STL, 11/13/2026: From $468
    13

    Fri

  • MCI–STL, 11/14/2026: From $468
    14

    Sat

  • MCI–STL, 11/15/2026: From $468
    15

    Sun

  • MCI–STL, 11/16/2026: From $468
    16

    Mon

  • MCI–STL, 11/17/2026: From $468
    17

    Tue

  • MCI–STL, 11/18/2026: From $407
    18

    Wed

  • MCI–STL, 11/19/2026: From $407
    19

    Thu

  • MCI–STL, 11/20/2026: From $407
    20

    Fri

  • MCI–STL, 11/21/2026: From $407
    21

    Sat

  • MCI–STL, 11/22/2026: From $407
    22

    Sun

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

    Mon

  • MCI–STL, 11/24/2026: From $407
    24

    Tue

  • MCI–STL, 11/25/2026: From $277
    25

    Wed

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

    Thu

  • MCI–STL: cmp-view-offers-disclaimer. Find Offers
    27

    Fri

  • MCI–STL, 11/28/2026: From $307
    28

    Sat

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

    Sun

  • MCI–STL, 11/30/2026: From $307
    30

    Mon

  • MCI–STL, 12/01/2026: From $277
    01

    Tue

    DEC

  • MCI–STL, 12/02/2026: From $194
    02

    Wed

  • MCI–STL, 12/03/2026: From $105
    03

    Thu

  • MCI–STL, 12/04/2026: From $246
    04

    Fri

  • MCI–STL: cmp-view-offers-disclaimer. Find Offers
    05

    Sat

  • MCI–STL, 12/06/2026: From $246
    06

    Sun

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

    Mon

  • MCI–STL, 12/08/2026: From $194
    08

    Tue

  • MCI–STL, 12/09/2026: From $194
    09

    Wed

  • MCI–STL, 12/10/2026: From $194
    10

    Thu

  • MCI–STL, 12/11/2026: From $246
    11

    Fri

    • Range$105-$468

    *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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