Southwest® flights from St. Louis to Milwaukee from $134

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Low fares from St. Louis to Milwaukee

$

St. Louis (STL)to

Milwaukee (MKE)
Depart: 09/11/2026

One-way

Basic

From
$134
Seen: 22 hrs ago

St. Louis (STL)to

Milwaukee (MKE)
Depart: 09/17/2026

One-way

Basic

From
$134
Seen: 16 hrs ago

St. Louis (STL)to

Milwaukee (MKE)
Depart: 10/08/2026

One-way

Basic

From
$134
Seen: 5 hrs ago

St. Louis (STL)to

Milwaukee (MKE)
Depart: 11/09/2026

One-way

Basic

From
$134
Seen: 5 hrs ago

St. Louis (STL)to

Milwaukee (MKE)
Depart: 10/01/2026

One-way

Basic

From
$134
Seen: 4 hrs ago

St. Louis (STL)to

Milwaukee (MKE)
Depart: 10/14/2026

One-way

Basic

From
$134
Seen: 1 hour ago

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Explore flights from St. Louis to Milwaukee

Aug 2026
From$234*
Seen: 7 hrs ago
One Way/Basic
Sep 2026
From$134*
Seen: 18 hrs ago
One Way/Basic
Oct 2026
From$134*
Seen: 23 hrs ago
One Way/Basic
cmp-daily-histogram-bars-legend-min-price-aria-label $134
cmp-daily-histogram-bars-legend-max-price-aria-label $371
Displaying fares for August-2026
  • STL–MKE, 08/22/2026: From $371
    22

    Sat

    AUG

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

    Sun

  • STL–MKE: cmp-view-offers-disclaimer. Find Offers
    24

    Mon

  • STL–MKE, 08/25/2026: From $234
    25

    Tue

  • STL–MKE, 08/26/2026: From $234
    26

    Wed

  • STL–MKE, 08/27/2026: From $234
    27

    Thu

  • STL–MKE, 08/28/2026: From $234
    28

    Fri

  • STL–MKE, 08/29/2026: From $234
    29

    Sat

  • STL–MKE, 08/30/2026: From $234
    30

    Sun

  • STL–MKE, 08/31/2026: From $234
    31

    Mon

  • STL–MKE, 09/01/2026: From $234
    01

    Tue

    SEP

  • STL–MKE, 09/02/2026: From $234
    02

    Wed

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

    Thu

  • STL–MKE, 09/04/2026: From $168
    04

    Fri

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

    Sat

  • STL–MKE: cmp-view-offers-disclaimer. Find Offers
    06

    Sun

  • STL–MKE, 09/07/2026: From $168
    07

    Mon

  • STL–MKE, 09/08/2026: From $168
    08

    Tue

  • STL–MKE, 09/09/2026: From $168
    09

    Wed

  • STL–MKE, 09/10/2026: From $134
    10

    Thu

  • STL–MKE, 09/11/2026: From $134
    11

    Fri

  • STL–MKE: cmp-view-offers-disclaimer. Find Offers
    12

    Sat

  • STL–MKE: cmp-view-offers-disclaimer. Find Offers
    13

    Sun

  • STL–MKE, 09/14/2026: From $134
    14

    Mon

  • STL–MKE, 09/15/2026: From $134
    15

    Tue

  • STL–MKE, 09/16/2026: From $134
    16

    Wed

  • STL–MKE, 09/17/2026: From $134
    17

    Thu

  • STL–MKE, 09/18/2026: From $134
    18

    Fri

  • STL–MKE, 09/19/2026: From $134
    19

    Sat

  • STL–MKE: cmp-view-offers-disclaimer. Find Offers
    20

    Sun

  • STL–MKE, 09/21/2026: From $134
    21

    Mon

    • Range$134-$371

    *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:
    Lambert-St Louis Int'l Airport
    Arriving at:
    General Mitchell Airport
    Average flight time:
    1 hour 14 minutes
    Distance:
    317 miles

    Route Information

    89† Weekly flights
    • 2‡ Nonstop flights per day Monday through Friday
    • 1‡ Nonstop flight on Saturday
    • 2‡ Nonstop flights on Sunday

    † 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

    The average flight time from St. Louis to Milwaukee is 1 hour 14 minutes.
    There are 89 weekly flights from St. Louis to Milwaukee on Southwest Airlines.
    Yes, Southwest flies nonstop from St. Louis to Milwaukee 2 times per day from Monday through Friday.
    Yes, Southwest flies nonstop from St. Louis to Milwaukee once per day on Saturdays and 2 times per day on Sundays.
    To find the lowest fares by day and time to fly St. Louis to Milwaukee with Southwest, check out our Low Fare Calendar.
    You can rent a car at General Mitchell Airport book yours with your flight.
    Yes! Flights from St. Louis to Milwaukee—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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