Southwest® flights from St. Louis to Detroit from $90

Promo Code

Low fares from St. Louis to Detroit

$

St. Louis (STL)to

Detroit (DTW)
Depart: 09/05/2026

One-way

Basic

From
$90
Seen: 15 hrs ago

St. Louis (STL)to

Detroit (DTW)
Depart: 09/06/2026

One-way

Basic

From
$109
Seen: 19 hrs ago

St. Louis (STL)to

Detroit (DTW)
Depart: 11/11/2026

One-way

Basic

From
$111
Seen: 18 hrs ago

St. Louis (STL)to

Detroit (DTW)
Depart: 09/15/2026

One-way

Basic

From
$111
Seen: 16 hrs ago

St. Louis (STL)to

Detroit (DTW)
Depart: 09/30/2026

One-way

Basic

From
$111
Seen: 9 hrs ago

St. Louis (STL)to

Detroit (DTW)
Depart: 10/21/2026

One-way

Basic

From
$111
Seen: 22 hrs ago

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Explore flights from St. Louis to Detroit

Aug 2026
From$143*
Seen: 8 hrs ago
One Way/Basic
Sep 2026
From$90*
Seen: 15 hrs ago
One Way/Basic
Oct 2026
From$111*
Seen: 22 hrs ago
One Way/Basic
cmp-daily-histogram-bars-legend-min-price-aria-label $90
cmp-daily-histogram-bars-legend-max-price-aria-label $417
Displaying fares for August-2026
  • STL–DTW: cmp-view-offers-disclaimer. Find Offers
    14

    Fri

    AUG

  • STL–DTW, 08/15/2026: From $417
    15

    Sat

  • STL–DTW, 08/16/2026: From $417
    16

    Sun

  • STL–DTW, 08/17/2026: From $417
    17

    Mon

  • STL–DTW, 08/18/2026: From $417
    18

    Tue

  • STL–DTW, 08/19/2026: From $417
    19

    Wed

  • STL–DTW, 08/20/2026: From $417
    20

    Thu

  • STL–DTW, 08/21/2026: From $340
    21

    Fri

  • STL–DTW, 08/22/2026: From $340
    22

    Sat

  • STL–DTW, 08/23/2026: From $340
    23

    Sun

  • STL–DTW, 08/24/2026: From $340
    24

    Mon

  • STL–DTW, 08/25/2026: From $340
    25

    Tue

  • STL–DTW, 08/26/2026: From $340
    26

    Wed

  • STL–DTW, 08/27/2026: From $340
    27

    Thu

  • STL–DTW, 08/28/2026: From $238
    28

    Fri

  • STL–DTW, 08/29/2026: From $228
    29

    Sat

  • STL–DTW, 08/30/2026: From $228
    30

    Sun

  • STL–DTW, 08/31/2026: From $143
    31

    Mon

  • STL–DTW, 09/01/2026: From $143
    01

    Tue

    SEP

  • STL–DTW, 09/02/2026: From $143
    02

    Wed

  • STL–DTW, 09/03/2026: From $228
    03

    Thu

  • STL–DTW, 09/04/2026: From $157
    04

    Fri

  • STL–DTW, 09/05/2026: From $90
    05

    Sat

  • STL–DTW, 09/06/2026: From $109
    06

    Sun

  • STL–DTW, 09/07/2026: From $129
    07

    Mon

  • STL–DTW, 09/08/2026: From $129
    08

    Tue

  • STL–DTW, 09/09/2026: From $129
    09

    Wed

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

    Thu

  • STL–DTW, 09/11/2026: From $130
    11

    Fri

  • STL–DTW, 09/12/2026: From $129
    12

    Sat

  • STL–DTW, 09/13/2026: From $186
    13

    Sun

    • Range$90-$417

    *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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