Southwest® flights from Phoenix to St. Louis from $200

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Low fares from Phoenix to St. Louis

$

Phoenix (PHX)to

St. Louis (STL)
Depart: 01/16/2027

One-way

Basic

From
$200
Seen: 22 hrs ago

Phoenix (PHX)to

St. Louis (STL)
Depart: 01/27/2027

One-way

Basic

From
$200
Seen: 23 hrs ago

Phoenix (PHX)to

St. Louis (STL)
Depart: 12/23/2026

One-way

Basic

From
$205
Seen: 18 hrs ago

Phoenix (PHX)to

St. Louis (STL)
Depart: 01/06/2027

One-way

Basic

From
$205
Seen: 1 hour ago

Phoenix (PHX)to

St. Louis (STL)
Depart: 12/19/2026

One-way

Basic

From
$205
Seen: 18 hrs ago

Phoenix (PHX)to

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

One-way

Basic

From
$205
Seen: 17 hrs ago

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Explore flights from Phoenix to St. Louis

Nov 2026
From$321*
Seen: 18 hrs ago
One Way/Basic
Dec 2026
From$205*
Seen: 18 hrs ago
One Way/Basic
Jan 2027
From$200*
Seen: 23 hrs ago
One Way/Basic
cmp-daily-histogram-bars-legend-min-price-aria-label $205
cmp-daily-histogram-bars-legend-max-price-aria-label $367
Displaying fares for November-2026
  • PHX–STL, 11/11/2026: From $321
    11

    Wed

    NOV

  • PHX–STL, 11/12/2026: From $367
    12

    Thu

  • PHX–STL, 11/13/2026: From $367
    13

    Fri

  • PHX–STL, 11/14/2026: From $321
    14

    Sat

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

    Sun

  • PHX–STL, 11/16/2026: From $367
    16

    Mon

  • PHX–STL, 11/17/2026: From $321
    17

    Tue

  • PHX–STL, 11/18/2026: From $321
    18

    Wed

  • PHX–STL, 11/19/2026: From $367
    19

    Thu

  • PHX–STL, 11/20/2026: From $367
    20

    Fri

  • PHX–STL, 11/21/2026: From $321
    21

    Sat

  • PHX–STL, 11/22/2026: From $367
    22

    Sun

  • PHX–STL, 11/23/2026: From $367
    23

    Mon

  • PHX–STL, 11/24/2026: From $321
    24

    Tue

  • PHX–STL, 11/25/2026: From $321
    25

    Wed

  • PHX–STL, 11/26/2026: From $350
    26

    Thu

  • PHX–STL, 11/27/2026: From $350
    27

    Fri

  • PHX–STL, 11/28/2026: From $321
    28

    Sat

  • PHX–STL, 11/29/2026: From $350
    29

    Sun

  • PHX–STL, 11/30/2026: From $350
    30

    Mon

  • PHX–STL, 12/01/2026: From $321
    01

    Tue

    DEC

  • PHX–STL, 12/02/2026: From $205
    02

    Wed

  • PHX–STL, 12/03/2026: From $225
    03

    Thu

  • PHX–STL, 12/04/2026: From $240
    04

    Fri

  • PHX–STL, 12/05/2026: From $205
    05

    Sat

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

    Sun

  • PHX–STL, 12/07/2026: From $225
    07

    Mon

  • PHX–STL, 12/08/2026: From $205
    08

    Tue

  • PHX–STL, 12/09/2026: From $205
    09

    Wed

  • PHX–STL, 12/10/2026: From $225
    10

    Thu

    • Range$205-$367

    *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:
    Sky Harbor International Airport
    Arriving at:
    Lambert-St Louis Int'l Airport
    Average flight time:
    2 hours 54 minutes
    Distance:
    1262 miles

    Questions we hear the most

    The average flight time from Phoenix to St. Louis is 2 hours 54 minutes.
    There are 156 weekly flights from Phoenix to St. Louis on Southwest Airlines.
    Yes, Southwest flies nonstop from Phoenix to St. Louis 4 times per day from Monday through Friday.
    Yes, Southwest flies nonstop from Phoenix to St. Louis 4 times per day on Saturdays and Sundays.
    To find the lowest fares by day and time to fly Phoenix 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 Phoenix 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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