Southwest® flights from St. Louis to Las Vegas from $156

Promo Code

Low fares from St. Louis to Las Vegas

$

St. Louis (STL)to

Las Vegas (LAS)
Depart: 12/14/2026

One-way

Basic

From
$156
Seen: 3 hrs ago

St. Louis (STL)to

Las Vegas (LAS)
Depart: 12/08/2026

One-way

Basic

From
$156
Seen: 21 hrs ago

St. Louis (STL)to

Las Vegas (LAS)
Depart: 12/15/2026

One-way

Basic

From
$156
Seen: 13 hrs ago

St. Louis (STL)to

Las Vegas (LAS)
Depart: 11/10/2026

One-way

Basic

From
$156
Seen: 17 minutes ago

St. Louis (STL)to

Las Vegas (LAS)
Depart: 01/12/2027

One-way

Basic

From
$156
Seen: 14 hrs ago

St. Louis (STL)to

Las Vegas (LAS)
Depart: 12/16/2026

One-way

Basic

From
$156
Seen: 11 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.

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Explore flights from St. Louis to Las Vegas

Oct 2026
From$181*
Seen: 3 hrs ago
One Way/Basic
Nov 2026
From$156*
Seen: 17 minutes ago
One Way/Basic
Dec 2026
From$156*
Seen: 11 hrs ago
One Way/Basic
cmp-daily-histogram-bars-legend-min-price-aria-label $156
cmp-daily-histogram-bars-legend-max-price-aria-label $584
Displaying fares for October-2026
  • STL–LAS, 10/09/2026: From $579
    09

    Fri

    OCT

  • STL–LAS, 10/10/2026: From $584
    10

    Sat

  • STL–LAS: cmp-view-offers-disclaimer. Find Offers
    11

    Sun

  • STL–LAS, 10/12/2026: From $579
    12

    Mon

  • STL–LAS, 10/13/2026: From $584
    13

    Tue

  • STL–LAS, 10/14/2026: From $584
    14

    Wed

  • STL–LAS, 10/15/2026: From $508
    15

    Thu

  • STL–LAS, 10/16/2026: From $508
    16

    Fri

  • STL–LAS, 10/17/2026: From $513
    17

    Sat

  • STL–LAS, 10/18/2026: From $513
    18

    Sun

  • STL–LAS, 10/19/2026: From $508
    19

    Mon

  • STL–LAS, 10/20/2026: From $513
    20

    Tue

  • STL–LAS, 10/21/2026: From $513
    21

    Wed

  • STL–LAS, 10/22/2026: From $329
    22

    Thu

  • STL–LAS, 10/23/2026: From $329
    23

    Fri

  • STL–LAS, 10/24/2026: From $334
    24

    Sat

  • STL–LAS, 10/25/2026: From $334
    25

    Sun

  • STL–LAS, 10/26/2026: From $207
    26

    Mon

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

    Tue

  • STL–LAS, 10/28/2026: From $207
    28

    Wed

  • STL–LAS, 10/29/2026: From $181
    29

    Thu

  • STL–LAS, 10/30/2026: From $234
    30

    Fri

  • STL–LAS, 10/31/2026: From $181
    31

    Sat

  • STL–LAS, 11/01/2026: From $287
    01

    Sun

    NOV

  • STL–LAS, 11/02/2026: From $181
    02

    Mon

  • STL–LAS, 11/03/2026: From $181
    03

    Tue

  • STL–LAS: cmp-view-offers-disclaimer. Find Offers
    04

    Wed

  • STL–LAS, 11/05/2026: From $185
    05

    Thu

  • STL–LAS, 11/06/2026: From $237
    06

    Fri

  • STL–LAS, 11/07/2026: From $156
    07

    Sat

  • STL–LAS, 11/08/2026: From $250
    08

    Sun

    • Range$156-$584

    *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:
    McCarran International Airport
    Average flight time:
    3 hours 31 minutes
    Distance:
    1371 miles

    Questions we hear the most

    The average flight time from St. Louis to Las Vegas is 3 hours 31 minutes.
    There are 156 weekly flights from St. Louis to Las Vegas on Southwest Airlines.
    Yes, Southwest flies nonstop from St. Louis to Las Vegas 5 times per day from Monday through Friday.
    Yes, Southwest flies nonstop from St. Louis to Las Vegas 4 times per day on Saturdays and 6 times per day on Sundays.
    To find the lowest fares by day and time to fly St. Louis to Las Vegas with Southwest, check out our Low Fare Calendar.
    You can rent a car at McCarran International Airport book yours with your flight.
    Yes! Flights from St. Louis to Las Vegas—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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