Southwest® flights from St. Louis to Detroit from $171

Promo Code

Low fares from St. Louis to Detroit

$

St. Louis (STL)to

Detroit (DTW)
Depart: 10/10/2026

One-way

Basic

From
$171
Seen: 19 hrs ago

St. Louis (STL)to

Detroit (DTW)
Depart: 10/24/2026

One-way

Basic

From
$171
Seen: 16 hrs ago

St. Louis (STL)to

Detroit (DTW)
Depart: 10/30/2026

One-way

Basic

From
$171
Seen: 17 hrs ago

St. Louis (STL)to

Detroit (DTW)
Depart: 11/11/2026

One-way

Basic

From
$171
Seen: 23 hrs ago

St. Louis (STL)to

Detroit (DTW)
Depart: 10/09/2026

One-way

Basic

From
$171
Seen: 5 hrs ago

St. Louis (STL)to

Detroit (DTW)
Depart: 10/07/2026

One-way

Basic

From
$171
Seen: 14 hrs ago

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Explore flights from St. Louis to Detroit

Sep 2026
From$171*
Seen: 14 hrs ago
One Way/Basic
Oct 2026
From$171*
Seen: 21 hrs ago
One Way/Basic
Nov 2026
From$171*
Seen: 11 hrs ago
One Way/Basic
cmp-daily-histogram-bars-legend-min-price-aria-label $171
cmp-daily-histogram-bars-legend-max-price-aria-label $427
Displaying fares for September-2026
  • STL–DTW, 09/08/2026: From $427
    08

    Tue

    SEP

  • STL–DTW, 09/09/2026: From $427
    09

    Wed

  • STL–DTW, 09/10/2026: From $386
    10

    Thu

  • STL–DTW, 09/11/2026: From $427
    11

    Fri

  • STL–DTW, 09/12/2026: From $427
    12

    Sat

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

    Sun

  • STL–DTW, 09/14/2026: From $350
    14

    Mon

  • STL–DTW, 09/15/2026: From $350
    15

    Tue

  • STL–DTW, 09/16/2026: From $350
    16

    Wed

  • STL–DTW: cmp-view-offers-disclaimer. Find Offers
    17

    Thu

  • STL–DTW, 09/18/2026: From $350
    18

    Fri

  • STL–DTW, 09/19/2026: From $350
    19

    Sat

  • STL–DTW, 09/20/2026: From $238
    20

    Sun

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

    Mon

  • STL–DTW: cmp-view-offers-disclaimer. Find Offers
    22

    Tue

  • STL–DTW, 09/23/2026: From $238
    23

    Wed

  • STL–DTW, 09/24/2026: From $238
    24

    Thu

  • STL–DTW, 09/25/2026: From $248
    25

    Fri

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

    Sat

  • STL–DTW, 09/27/2026: From $238
    27

    Sun

  • STL–DTW: cmp-view-offers-disclaimer. Find Offers
    28

    Mon

  • STL–DTW: cmp-view-offers-disclaimer. Find Offers
    29

    Tue

  • STL–DTW, 09/30/2026: From $171
    30

    Wed

  • STL–DTW, 10/01/2026: From $171
    01

    Thu

    OCT

  • STL–DTW: cmp-view-offers-disclaimer. Find Offers
    02

    Fri

  • STL–DTW, 10/03/2026: From $171
    03

    Sat

  • STL–DTW, 10/04/2026: From $196
    04

    Sun

  • STL–DTW, 10/05/2026: From $171
    05

    Mon

  • STL–DTW, 10/06/2026: From $171
    06

    Tue

  • STL–DTW, 10/07/2026: From $171
    07

    Wed

    • Range$171-$427

    *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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