Southwest® flights from St. Louis to Cincinnati from $140

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Low fares from St. Louis to Cincinnati

$

St. Louis (STL)to

Cincinnati (CVG)
Depart: 09/05/2026

One-way

Basic

From
$140
Seen: 5 hrs ago

St. Louis (STL)to

Cincinnati (CVG)
Depart: 09/12/2026

One-way

Basic

From
$142
Seen: 7 hrs ago

St. Louis (STL)to

Cincinnati (CVG)
Depart: 10/05/2026

One-way

Basic

From
$150
Seen: 19 hrs ago

St. Louis (STL)to

Cincinnati (CVG)
Depart: 08/24/2026

One-way

Basic

From
$150
Seen: 19 hrs ago

St. Louis (STL)to

Cincinnati (CVG)
Depart: 11/04/2026

One-way

Basic

From
$150
Seen: 22 hrs ago

St. Louis (STL)to

Cincinnati (CVG)
Depart: 09/16/2026

One-way

Basic

From
$150
Seen: 22 hrs ago

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Explore flights from St. Louis to Cincinnati

Aug 2026
From$150*
Seen: 19 hrs ago
One Way/Basic
Sep 2026
From$140*
Seen: 5 hrs ago
One Way/Basic
Oct 2026
From$150*
Seen: 11 hrs ago
One Way/Basic
cmp-daily-histogram-bars-legend-min-price-aria-label $150
cmp-daily-histogram-bars-legend-max-price-aria-label $389
Displaying fares for August-2026
  • STL–CVG, 08/01/2026: From $389
    01

    Sat

    AUG

  • STL–CVG, 08/02/2026: From $389
    02

    Sun

  • STL–CVG: cmp-view-offers-disclaimer. Find Offers
    03

    Mon

  • STL–CVG, 08/04/2026: From $389
    04

    Tue

  • STL–CVG, 08/05/2026: From $389
    05

    Wed

  • STL–CVG, 08/06/2026: From $324
    06

    Thu

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

    Fri

  • STL–CVG, 08/08/2026: From $324
    08

    Sat

  • STL–CVG, 08/09/2026: From $324
    09

    Sun

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

    Mon

  • STL–CVG: cmp-view-offers-disclaimer. Find Offers
    11

    Tue

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

    Wed

  • STL–CVG, 08/13/2026: From $324
    13

    Thu

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

    Fri

  • STL–CVG: cmp-view-offers-disclaimer. Find Offers
    15

    Sat

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

    Sun

  • STL–CVG, 08/17/2026: From $235
    17

    Mon

  • STL–CVG, 08/18/2026: From $235
    18

    Tue

  • STL–CVG, 08/19/2026: From $235
    19

    Wed

  • STL–CVG, 08/20/2026: From $235
    20

    Thu

  • STL–CVG, 08/21/2026: From $165
    21

    Fri

  • STL–CVG, 08/22/2026: From $150
    22

    Sat

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

    Sun

  • STL–CVG, 08/24/2026: From $150
    24

    Mon

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    25

    Tue

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

    Wed

  • STL–CVG, 08/27/2026: From $150
    27

    Thu

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

    Fri

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

    Sat

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    30

    Sun

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

    Mon

    • Range$150-$389

    *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:
    Cincinnati/Northern Kentucky Airport
    Distance:
    308 miles

    Route Information

    89† 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 89 weekly flights from St. Louis to Cincinnati on Southwest Airlines.
    To find the lowest fares by day and time to fly St. Louis to Cincinnati with Southwest, check out our Low Fare Calendar.
    You can rent a car at Cincinnati/Northern Kentucky Airport book yours with your flight.
    Yes! Flights from St. Louis to Cincinnati—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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