Southwest® flights from St. Louis to Indianapolis from $119

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Low fares from St. Louis to Indianapolis

$

St. Louis (STL)to

Indianapolis (IND)
Depart: 10/12/2026

One-way

Basic

From
$119
Seen: 18 hrs ago

St. Louis (STL)to

Indianapolis (IND)
Depart: 10/10/2026

One-way

Basic

From
$119
Seen: 13 hrs ago

St. Louis (STL)to

Indianapolis (IND)
Depart: 10/13/2026

One-way

Basic

From
$119
Seen: 15 hrs ago

St. Louis (STL)to

Indianapolis (IND)
Depart: 09/15/2026

One-way

Basic

From
$119
Seen: 5 hrs ago

St. Louis (STL)to

Indianapolis (IND)
Depart: 09/22/2026

One-way

Basic

From
$119
Seen: 1 hour ago

St. Louis (STL)to

Indianapolis (IND)
Depart: 10/09/2026

One-way

Basic

From
$135
Seen: 10 hrs ago

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Explore flights from St. Louis to Indianapolis

Aug 2026
From$295*
Seen: 6 hrs ago
One Way/Basic
Sep 2026
From$119*
Seen: 5 hrs ago
One Way/Basic
Oct 2026
From$119*
Seen: 13 hrs ago
One Way/Basic
cmp-daily-histogram-bars-legend-min-price-aria-label $119
cmp-daily-histogram-bars-legend-max-price-aria-label $341
Displaying fares for August-2026
  • STL–IND, 08/22/2026: From $295
    22

    Sat

    AUG

  • STL–IND, 08/23/2026: From $341
    23

    Sun

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    24

    Mon

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    25

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    26

    Wed

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    27

    Thu

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    28

    Fri

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    29

    Sat

  • STL–IND, 08/30/2026: From $339
    30

    Sun

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    31

    Mon

  • STL–IND, 09/01/2026: From $295
    01

    Tue

    SEP

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    02

    Wed

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    03

    Thu

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    04

    Fri

  • STL–IND, 09/05/2026: From $196
    05

    Sat

  • STL–IND, 09/06/2026: From $196
    06

    Sun

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

    Mon

  • STL–IND, 09/08/2026: From $224
    08

    Tue

  • STL–IND, 09/09/2026: From $196
    09

    Wed

  • STL–IND, 09/10/2026: From $196
    10

    Thu

  • STL–IND, 09/11/2026: From $140
    11

    Fri

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    12

    Sat

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    13

    Sun

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    14

    Mon

  • STL–IND, 09/15/2026: From $119
    15

    Tue

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    16

    Wed

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    17

    Thu

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    18

    Fri

  • STL–IND: cmp-view-offers-disclaimer. Find Offers
    19

    Sat

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    20

    Sun

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

    Mon

    • Range$119-$341

    *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:
    Indianapolis International Airport
    Distance:
    229 miles

    Route Information

    151† 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 151 weekly flights from St. Louis to Indianapolis on Southwest Airlines.
    To find the lowest fares by day and time to fly St. Louis to Indianapolis with Southwest, check out our Low Fare Calendar.
    You can rent a car at Indianapolis International Airport book yours with your flight.
    Yes! Flights from St. Louis to Indianapolis—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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