Southwest® flights from San Antonio to St. Louis from $164

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Low fares from San Antonio to St. Louis

$

San Antonio (SAT)to

St. Louis (STL)
Depart: 12/08/2026

One-way

Basic

From
$164
Seen: 23 hrs ago

San Antonio (SAT)to

St. Louis (STL)
Depart: 02/09/2027

One-way

Basic

From
$169
Seen: 8 hrs ago

San Antonio (SAT)to

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

One-way

Basic

From
$169
Seen: 2 hrs ago

San Antonio (SAT)to

St. Louis (STL)
Depart: 12/01/2026

One-way

Basic

From
$169
Seen: 12 hrs ago

San Antonio (SAT)to

St. Louis (STL)
Depart: 01/05/2027

One-way

Basic

From
$169
Seen: 7 hrs ago

San Antonio (SAT)to

St. Louis (STL)
Depart: 12/16/2026

One-way

Basic

From
$169
Seen: 5 hrs ago

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Explore flights from San Antonio to St. Louis

Nov 2026
From$305*
Seen: 4 hrs ago
One Way/Basic
Dec 2026
From$164*
Seen: 23 hrs ago
One Way/Basic
Jan 2027
From$169*
Seen: 7 hrs ago
One Way/Basic
cmp-daily-histogram-bars-legend-min-price-aria-label $164
cmp-daily-histogram-bars-legend-max-price-aria-label $544
Displaying fares for November-2026
  • SAT–STL, 11/11/2026: From $544
    11

    Wed

    NOV

  • SAT–STL, 11/12/2026: From $544
    12

    Thu

  • SAT–STL, 11/13/2026: From $544
    13

    Fri

  • SAT–STL, 11/14/2026: From $544
    14

    Sat

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

    Sun

  • SAT–STL, 11/16/2026: From $544
    16

    Mon

  • SAT–STL, 11/17/2026: From $480
    17

    Tue

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

    Wed

  • SAT–STL, 11/19/2026: From $480
    19

    Thu

  • SAT–STL, 11/20/2026: From $480
    20

    Fri

  • SAT–STL, 11/21/2026: From $480
    21

    Sat

  • SAT–STL, 11/22/2026: From $480
    22

    Sun

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

    Mon

  • SAT–STL, 11/24/2026: From $305
    24

    Tue

  • SAT–STL, 11/25/2026: From $305
    25

    Wed

  • SAT–STL, 11/26/2026: From $305
    26

    Thu

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

    Fri

  • SAT–STL: cmp-view-offers-disclaimer. Find Offers
    28

    Sat

  • SAT–STL, 11/29/2026: From $335
    29

    Sun

  • SAT–STL, 11/30/2026: From $335
    30

    Mon

  • SAT–STL, 12/01/2026: From $169
    01

    Tue

    DEC

  • SAT–STL, 12/02/2026: From $179
    02

    Wed

  • SAT–STL, 12/03/2026: From $189
    03

    Thu

  • SAT–STL, 12/04/2026: From $214
    04

    Fri

  • SAT–STL, 12/05/2026: From $179
    05

    Sat

  • SAT–STL, 12/06/2026: From $271
    06

    Sun

  • SAT–STL, 12/07/2026: From $179
    07

    Mon

  • SAT–STL, 12/08/2026: From $164
    08

    Tue

  • SAT–STL, 12/09/2026: From $169
    09

    Wed

  • SAT–STL, 12/10/2026: From $199
    10

    Thu

    • Range$164-$544

    *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:
    San Antonio International Airport
    Arriving at:
    Lambert-St Louis Int'l Airport
    Average flight time:
    2 hours 5 minutes
    Distance:
    786 miles

    Questions we hear the most

    The average flight time from San Antonio to St. Louis is 2 hours 5 minutes.
    There are 156 weekly flights from San Antonio to St. Louis on Southwest Airlines.
    Yes, Southwest flies nonstop from San Antonio to St. Louis once per day from Monday through Friday.
    Yes, Southwest flies nonstop from San Antonio to St. Louis once per day on Saturdays and Sundays.
    To find the lowest fares by day and time to fly San Antonio 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 San Antonio 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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