Southwest® flights from St. Louis to New Orleans from $171

Promo Code

Low fares from St. Louis to New Orleans

$

St. Louis (STL)to

New Orleans (MSY)
Depart: 11/25/2026

One-way

Basic

From
$171
Seen: 5 hrs ago

St. Louis (STL)to

New Orleans (MSY)
Depart: 11/11/2026

One-way

Basic

From
$172
Seen: 20 hrs ago

St. Louis (STL)to

New Orleans (MSY)
Depart: 10/14/2026

One-way

Basic

From
$172
Seen: 6 hrs ago

St. Louis (STL)to

New Orleans (MSY)
Depart: 11/14/2026

One-way

Basic

From
$172
Seen: 6 hrs ago

St. Louis (STL)to

New Orleans (MSY)
Depart: 10/12/2026

One-way

Basic

From
$172
Seen: 8 hrs ago

St. Louis (STL)to

New Orleans (MSY)
Depart: 10/01/2026

One-way

Basic

From
$172
Seen: 7 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 St. Louis to New Orleans

Sep 2026
From$172*
Seen: 14 hrs ago
One Way/Basic
Oct 2026
From$172*
Seen: 16 hrs ago
One Way/Basic
Nov 2026
From$171*
Seen: 5 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
  • STL–MSY, 09/11/2026: From $485
    11

    Fri

    SEP

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

    Sat

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

    Sun

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

    Mon

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

    Tue

  • STL–MSY: cmp-view-offers-disclaimer. Find Offers
    16

    Wed

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

    Thu

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

    Fri

  • STL–MSY, 09/19/2026: From $376
    19

    Sat

  • STL–MSY, 09/20/2026: From $376
    20

    Sun

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

    Mon

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

    Tue

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

    Wed

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

    Thu

  • STL–MSY, 09/25/2026: From $280
    25

    Fri

  • STL–MSY, 09/26/2026: From $408
    26

    Sat

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

    Sun

  • STL–MSY, 09/28/2026: From $269
    28

    Mon

  • STL–MSY, 09/29/2026: From $269
    29

    Tue

  • STL–MSY, 09/30/2026: From $172
    30

    Wed

  • STL–MSY, 10/01/2026: From $172
    01

    Thu

    OCT

  • STL–MSY, 10/02/2026: From $174
    02

    Fri

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

    Sat

  • STL–MSY, 10/04/2026: From $230
    04

    Sun

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

    Mon

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

    Tue

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

    Wed

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

    Thu

  • STL–MSY, 10/09/2026: From $230
    09

    Fri

  • STL–MSY, 10/10/2026: From $184
    10

    Sat

    • 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:
    Lambert-St Louis Int'l Airport
    Arriving at:
    Louis Armstrong International Airport
    Average flight time:
    1 hour 43 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 St. Louis to New Orleans is 1 hour 43 minutes.
    There are 156 weekly flights from St. Louis to New Orleans on Southwest Airlines.
    Yes, Southwest flies nonstop from St. Louis to New Orleans 2 times per day from Monday through Friday.
    Yes, Southwest flies nonstop from St. Louis to New Orleans once per day on Saturdays and 3 times per day on Sundays.
    To find the lowest fares by day and time to fly St. Louis to New Orleans with Southwest, check out our Low Fare Calendar.
    You can rent a car at Louis Armstrong International Airport book yours with your flight.
    Yes! Flights from St. Louis to New Orleans—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 St. Louis