Southwest® flights from New Orleans to St. Louis from $172

Promo Code

Low fares from New Orleans to St. Louis

$

New Orleans (MSY)to

St. Louis (STL)
Depart: 10/05/2026

One-way

Basic

From
$172
Seen: 9 hrs ago

New Orleans (MSY)to

St. Louis (STL)
Depart: 10/08/2026

One-way

Basic

From
$172
Seen: 19 hrs ago

New Orleans (MSY)to

St. Louis (STL)
Depart: 10/27/2026

One-way

Basic

From
$172
Seen: 17 hrs ago

New Orleans (MSY)to

St. Louis (STL)
Depart: 11/23/2026

One-way

Basic

From
$172
Seen: 19 hrs ago

New Orleans (MSY)to

St. Louis (STL)
Depart: 11/04/2026

One-way

Basic

From
$172
Seen: 3 hrs ago

New Orleans (MSY)to

St. Louis (STL)
Depart: 10/07/2026

One-way

Basic

From
$172
Seen: 10 hrs 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 New Orleans to St. Louis

Sep 2026
From$269*
Seen: 17 hrs ago
One Way/Basic
Oct 2026
From$172*
Seen: 10 hrs ago
One Way/Basic
Nov 2026
From$172*
Seen: 10 hrs ago
One Way/Basic
cmp-daily-histogram-bars-legend-min-price-aria-label $172
cmp-daily-histogram-bars-legend-max-price-aria-label $485
Displaying fares for September-2026
  • MSY–STL, 09/09/2026: From $485
    09

    Wed

    SEP

  • MSY–STL, 09/10/2026: From $485
    10

    Thu

  • MSY–STL, 09/11/2026: From $485
    11

    Fri

  • MSY–STL, 09/12/2026: From $485
    12

    Sat

  • MSY–STL, 09/13/2026: From $480
    13

    Sun

  • MSY–STL, 09/14/2026: From $485
    14

    Mon

  • MSY–STL, 09/15/2026: From $485
    15

    Tue

  • MSY–STL, 09/16/2026: From $376
    16

    Wed

  • MSY–STL, 09/17/2026: From $376
    17

    Thu

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

    Fri

  • MSY–STL: cmp-view-offers-disclaimer. Find Offers
    19

    Sat

  • MSY–STL, 09/20/2026: From $371
    20

    Sun

  • MSY–STL, 09/21/2026: From $376
    21

    Mon

  • MSY–STL, 09/22/2026: From $376
    22

    Tue

  • MSY–STL, 09/23/2026: From $269
    23

    Wed

  • MSY–STL, 09/24/2026: From $269
    24

    Thu

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

    Fri

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

    Sat

  • MSY–STL, 09/27/2026: From $269
    27

    Sun

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

    Mon

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

    Tue

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

    Wed

  • MSY–STL: cmp-view-offers-disclaimer. Find Offers
    01

    Thu

    OCT

  • MSY–STL, 10/02/2026: From $185
    02

    Fri

  • MSY–STL, 10/03/2026: From $172
    03

    Sat

  • MSY–STL, 10/04/2026: From $194
    04

    Sun

  • MSY–STL, 10/05/2026: From $172
    05

    Mon

  • MSY–STL, 10/06/2026: From $172
    06

    Tue

  • MSY–STL, 10/07/2026: From $172
    07

    Wed

  • MSY–STL, 10/08/2026: From $172
    08

    Thu

    • Range$172-$485

    *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:
    Louis Armstrong International Airport
    Arriving at:
    Lambert-St Louis Int'l Airport
    Average flight time:
    1 hour 46 minutes
    Distance:
    604 miles

    Route Information

    156† Weekly flights
    • 2‡ Nonstop flights per day Monday through Friday
    • 1‡ Nonstop flight on Saturday
    • 3‡ 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 New Orleans to St. Louis is 1 hour 46 minutes.
    There are 156 weekly flights from New Orleans to St. Louis on Southwest Airlines.
    Yes, Southwest flies nonstop from New Orleans to St. Louis 2 times per day from Monday through Friday.
    Yes, Southwest flies nonstop from New Orleans to St. Louis once per day on Saturdays and 3 times per day on Sundays.
    To find the lowest fares by day and time to fly New Orleans 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 New Orleans 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 New Orleans