Southwest® flights from St. Louis to Detroit from $139

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Low fares from St. Louis to Detroit

$

St. Louis (STL)to

Detroit (DTW)
Depart: 11/12/2026

One-way

Basic

From
$139
Seen: 14 hrs ago

St. Louis (STL)to

Detroit (DTW)
Depart: 12/07/2026

One-way

Basic

From
$139
Seen: 21 hrs ago

St. Louis (STL)to

Detroit (DTW)
Depart: 10/19/2026

One-way

Basic

From
$139
Seen: 3 hrs ago

St. Louis (STL)to

Detroit (DTW)
Depart: 10/21/2026

One-way

Basic

From
$139
Seen: 2 hrs ago

St. Louis (STL)to

Detroit (DTW)
Depart: 10/24/2026

One-way

Basic

From
$139
Seen: 16 hrs ago

St. Louis (STL)to

Detroit (DTW)
Depart: 10/29/2026

One-way

Basic

From
$139
Seen: 18 hrs ago

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Explore flights from St. Louis to Detroit

Sep 2026
From$437*
Seen: 13 hrs ago
One Way/Basic
Oct 2026
From$139*
Seen: 7 hrs ago
One Way/Basic
Nov 2026
From$139*
Seen: 7 hrs ago
One Way/Basic
cmp-daily-histogram-bars-legend-min-price-aria-label $139
cmp-daily-histogram-bars-legend-max-price-aria-label $437
Displaying fares for September-2026
  • STL–DTW: cmp-view-offers-disclaimer. Find Offers
    28

    Mon

    SEP

  • STL–DTW, 09/29/2026: From $437
    29

    Tue

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

    Wed

  • STL–DTW, 10/01/2026: From $437
    01

    Thu

    OCT

  • STL–DTW, 10/02/2026: From $437
    02

    Fri

  • STL–DTW, 10/03/2026: From $437
    03

    Sat

  • STL–DTW, 10/04/2026: From $360
    04

    Sun

  • STL–DTW, 10/05/2026: From $360
    05

    Mon

  • STL–DTW, 10/06/2026: From $360
    06

    Tue

  • STL–DTW, 10/07/2026: From $360
    07

    Wed

  • STL–DTW, 10/08/2026: From $360
    08

    Thu

  • STL–DTW, 10/09/2026: From $360
    09

    Fri

  • STL–DTW: cmp-view-offers-disclaimer. Find Offers
    10

    Sat

  • STL–DTW, 10/11/2026: From $248
    11

    Sun

  • STL–DTW, 10/12/2026: From $248
    12

    Mon

  • STL–DTW, 10/13/2026: From $248
    13

    Tue

  • STL–DTW, 10/14/2026: From $248
    14

    Wed

  • STL–DTW, 10/15/2026: From $248
    15

    Thu

  • STL–DTW, 10/16/2026: From $248
    16

    Fri

  • STL–DTW, 10/17/2026: From $248
    17

    Sat

  • STL–DTW, 10/18/2026: From $206
    18

    Sun

  • STL–DTW, 10/19/2026: From $139
    19

    Mon

  • STL–DTW, 10/20/2026: From $139
    20

    Tue

  • STL–DTW, 10/21/2026: From $139
    21

    Wed

  • STL–DTW, 10/22/2026: From $149
    22

    Thu

  • STL–DTW, 10/23/2026: From $156
    23

    Fri

  • STL–DTW, 10/24/2026: From $139
    24

    Sat

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

    Sun

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

    Mon

  • STL–DTW, 10/27/2026: From $139
    27

    Tue

    • Range$139-$437

    *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:
    Wayne County Airport
    Average flight time:
    1 hour 30 minutes
    Distance:
    440 miles

    Route Information

    135† Weekly flights
    • 1‡ Nonstop flight per day Monday through Friday
    • 1‡ Nonstop flight on Saturday
    • 2‡ 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 Detroit is 1 hour 30 minutes.
    There are 135 weekly flights from St. Louis to Detroit on Southwest Airlines.
    Yes, Southwest flies nonstop from St. Louis to Detroit once per day from Monday through Friday.
    Yes, Southwest flies nonstop from St. Louis to Detroit once per day on Saturdays and 2 times per day on Sundays.
    To find the lowest fares by day and time to fly St. Louis to Detroit with Southwest, check out our Low Fare Calendar.
    You can rent a car at Wayne County Airport book yours with your flight.
    Yes! Flights from St. Louis to Detroit—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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