Southwest® flights from Atlanta to St. Louis from $115

Promo Code

Low fares from Atlanta to St. Louis

$

Atlanta (ATL)to

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

One-way

Basic

From
$115
Seen: 5 hrs ago

Atlanta (ATL)to

St. Louis (STL)
Depart: 12/14/2026

One-way

Basic

From
$115
Seen: 4 hrs ago

Atlanta (ATL)to

St. Louis (STL)
Depart: 12/22/2026

One-way

Basic

From
$115
Seen: 2 minutes ago

Atlanta (ATL)to

St. Louis (STL)
Depart: 12/29/2026

One-way

Basic

From
$115
Seen: 3 hrs ago

Atlanta (ATL)to

St. Louis (STL)
Depart: 12/30/2026

One-way

Basic

From
$115
Seen: 2 hrs ago

Atlanta (ATL)to

St. Louis (STL)
Depart: 01/04/2027

One-way

Basic

From
$115
Seen: 7 minutes 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 Atlanta to St. Louis

Nov 2026
From$247*
Seen: 1 hour ago
One Way/Basic
Dec 2026
From$115*
Seen: 3 hrs ago
One Way/Basic
Jan 2027
From$115*
Seen: 7 minutes ago
One Way/Basic
cmp-daily-histogram-bars-legend-min-price-aria-label $115
cmp-daily-histogram-bars-legend-max-price-aria-label $432
Displaying fares for November-2026
  • ATL–STL, 11/11/2026: From $432
    11

    Wed

    NOV

  • ATL–STL, 11/12/2026: From $432
    12

    Thu

  • ATL–STL, 11/13/2026: From $432
    13

    Fri

  • ATL–STL, 11/14/2026: From $432
    14

    Sat

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

    Sun

  • ATL–STL, 11/16/2026: From $388
    16

    Mon

  • ATL–STL, 11/17/2026: From $388
    17

    Tue

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

    Wed

  • ATL–STL, 11/19/2026: From $388
    19

    Thu

  • ATL–STL, 11/20/2026: From $388
    20

    Fri

  • ATL–STL, 11/21/2026: From $388
    21

    Sat

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

    Sun

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

    Mon

  • ATL–STL, 11/24/2026: From $247
    24

    Tue

  • ATL–STL, 11/25/2026: From $247
    25

    Wed

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

    Thu

  • ATL–STL, 11/27/2026: From $247
    27

    Fri

  • ATL–STL, 11/28/2026: From $277
    28

    Sat

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

    Sun

  • ATL–STL: cmp-view-offers-disclaimer. Find Offers
    30

    Mon

  • ATL–STL, 12/01/2026: From $159
    01

    Tue

    DEC

  • ATL–STL, 12/02/2026: From $159
    02

    Wed

  • ATL–STL, 12/03/2026: From $115
    03

    Thu

  • ATL–STL, 12/04/2026: From $159
    04

    Fri

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

    Sat

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

    Sun

  • ATL–STL, 12/07/2026: From $159
    07

    Mon

  • ATL–STL: cmp-view-offers-disclaimer. Find Offers
    08

    Tue

  • ATL–STL, 12/09/2026: From $119
    09

    Wed

  • ATL–STL, 12/10/2026: From $119
    10

    Thu

    • Range$115-$432

    *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:
    Hartsfield-Jackson Atlanta International Airport
    Arriving at:
    Lambert-St Louis Int'l Airport
    Average flight time:
    1 hour 43 minutes
    Distance:
    484 miles

    Questions we hear the most

    The average flight time from Atlanta to St. Louis is 1 hour 43 minutes.
    There are 156 weekly flights from Atlanta to St. Louis on Southwest Airlines.
    Yes, Southwest flies nonstop from Atlanta to St. Louis 3 times per day from Monday through Friday.
    Yes, Southwest flies nonstop from Atlanta 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 Atlanta 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 Atlanta 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.

    Explore Flights from Other Popular Origins

    Popular Flights from Atlanta