Southwest® flights from St. Louis to Detroit from $89

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Low fares from St. Louis to Detroit

$

St. Louis (STL)to

Detroit (DTW)
Depart: 09/15/2026

One-way

Basic

From
$89
Seen: 11 hrs ago

St. Louis (STL)to

Detroit (DTW)
Depart: 09/05/2026

One-way

Basic

From
$89
Seen: 15 hrs ago

St. Louis (STL)to

Detroit (DTW)
Depart: 09/26/2026

One-way

Basic

From
$89
Seen: 19 hrs ago

St. Louis (STL)to

Detroit (DTW)
Depart: 09/08/2026

One-way

Basic

From
$89
Seen: 11 hrs ago

St. Louis (STL)to

Detroit (DTW)
Depart: 10/03/2026

One-way

Basic

From
$89
Seen: 14 hrs ago

St. Louis (STL)to

Detroit (DTW)
Depart: 09/06/2026

One-way

Basic

From
$109
Seen: 21 hrs ago

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Explore flights from St. Louis to Detroit

Aug 2026
From$125*
Seen: 8 hrs ago
One Way/Basic
Sep 2026
From$89*
Seen: 15 hrs ago
One Way/Basic
Oct 2026
From$89*
Seen: 14 hrs ago
One Way/Basic
cmp-daily-histogram-bars-legend-min-price-aria-label $125
cmp-daily-histogram-bars-legend-max-price-aria-label $417
Displaying fares for August-2026
  • STL–DTW, 08/01/2026: From $417
    01

    Sat

    AUG

  • STL–DTW, 08/02/2026: From $417
    02

    Sun

  • STL–DTW, 08/03/2026: From $417
    03

    Mon

  • STL–DTW, 08/04/2026: From $417
    04

    Tue

  • STL–DTW, 08/05/2026: From $417
    05

    Wed

  • STL–DTW, 08/06/2026: From $417
    06

    Thu

  • STL–DTW, 08/07/2026: From $340
    07

    Fri

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

    Sat

  • STL–DTW, 08/09/2026: From $340
    09

    Sun

  • STL–DTW, 08/10/2026: From $340
    10

    Mon

  • STL–DTW, 08/11/2026: From $340
    11

    Tue

  • STL–DTW, 08/12/2026: From $340
    12

    Wed

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

    Thu

  • STL–DTW, 08/14/2026: From $228
    14

    Fri

  • STL–DTW, 08/15/2026: From $228
    15

    Sat

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

    Sun

  • STL–DTW, 08/17/2026: From $228
    17

    Mon

  • STL–DTW, 08/18/2026: From $228
    18

    Tue

  • STL–DTW, 08/19/2026: From $228
    19

    Wed

  • STL–DTW, 08/20/2026: From $228
    20

    Thu

  • STL–DTW, 08/21/2026: From $129
    21

    Fri

  • STL–DTW, 08/22/2026: From $135
    22

    Sat

  • STL–DTW: cmp-view-offers-disclaimer. Find Offers
    23

    Sun

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

    Mon

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

    Tue

  • STL–DTW, 08/26/2026: From $125
    26

    Wed

  • STL–DTW, 08/27/2026: From $125
    27

    Thu

  • STL–DTW, 08/28/2026: From $139
    28

    Fri

  • STL–DTW, 08/29/2026: From $125
    29

    Sat

  • STL–DTW, 08/30/2026: From $149
    30

    Sun

  • STL–DTW: cmp-view-offers-disclaimer. Find Offers
    31

    Mon

    • Range$125-$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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