Southwest® flights from St. Louis to Tucson from $178

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Low fares from St. Louis to Tucson

$

St. Louis (STL)to

Tucson (TUS)
Depart: 11/18/2026

One-way

Basic

From
$178
Seen: 12 hrs ago

St. Louis (STL)to

Tucson (TUS)
Depart: 11/11/2026

One-way

Basic

From
$178
Seen: 9 hrs ago

St. Louis (STL)to

Tucson (TUS)
Depart: 11/17/2026

One-way

Basic

From
$178
Seen: 2 hrs ago

St. Louis (STL)to

Tucson (TUS)
Depart: 10/29/2026

One-way

Basic

From
$178
Seen: 17 hrs ago

St. Louis (STL)to

Tucson (TUS)
Depart: 10/21/2026

One-way

Basic

From
$178
Seen: 18 hrs ago

St. Louis (STL)to

Tucson (TUS)
Depart: 10/13/2026

One-way

Basic

From
$178
Seen: 12 hrs ago

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Explore flights from St. Louis to Tucson

Sep 2026
From$269*
Seen: 5 hrs ago
One Way/Basic
Oct 2026
From$178*
Seen: 17 hrs ago
One Way/Basic
Nov 2026
From$178*
Seen: 12 hrs ago
One Way/Basic
cmp-daily-histogram-bars-legend-min-price-aria-label $216
cmp-daily-histogram-bars-legend-max-price-aria-label $529
Displaying fares for September-2026
  • STL–TUS: cmp-view-offers-disclaimer. Find Offers
    10

    Thu

    SEP

  • STL–TUS, 09/11/2026: From $529
    11

    Fri

  • STL–TUS: cmp-view-offers-disclaimer. Find Offers
    12

    Sat

  • STL–TUS: cmp-view-offers-disclaimer. Find Offers
    13

    Sun

  • STL–TUS: cmp-view-offers-disclaimer. Find Offers
    14

    Mon

  • STL–TUS, 09/15/2026: From $529
    15

    Tue

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

    Wed

  • STL–TUS, 09/17/2026: From $454
    17

    Thu

  • STL–TUS, 09/18/2026: From $454
    18

    Fri

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

    Sat

  • STL–TUS, 09/20/2026: From $454
    20

    Sun

  • STL–TUS: cmp-view-offers-disclaimer. Find Offers
    21

    Mon

  • STL–TUS, 09/22/2026: From $454
    22

    Tue

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

    Wed

  • STL–TUS: cmp-view-offers-disclaimer. Find Offers
    24

    Thu

  • STL–TUS, 09/25/2026: From $279
    25

    Fri

  • STL–TUS, 09/26/2026: From $269
    26

    Sat

  • STL–TUS, 09/27/2026: From $279
    27

    Sun

  • STL–TUS, 09/28/2026: From $274
    28

    Mon

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

    Tue

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

    Wed

  • STL–TUS, 10/01/2026: From $258
    01

    Thu

    OCT

  • STL–TUS, 10/02/2026: From $249
    02

    Fri

  • STL–TUS, 10/03/2026: From $216
    03

    Sat

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

    Sun

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

    Mon

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

    Tue

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

    Wed

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

    Thu

  • STL–TUS, 10/09/2026: From $258
    09

    Fri

    • Range$216-$529

    *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:
    Tucson International Airport
    Distance:
    1244 miles

    Route Information

    149† Weekly flights

    † 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

    There are 149 weekly flights from St. Louis to Tucson on Southwest Airlines.
    To find the lowest fares by day and time to fly St. Louis to Tucson with Southwest, check out our Low Fare Calendar.
    You can rent a car at Tucson International Airport book yours with your flight.
    Yes! Flights from St. Louis to Tucson—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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