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

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Low fares from St. Louis to Jacksonville

$

St. Louis (STL)to

Jacksonville (JAX)
Depart: 09/05/2026

One-way

Basic

From
$119
Seen: 1 hour ago

St. Louis (STL)to

Jacksonville (JAX)
Depart: 09/06/2026

One-way

Basic

From
$119
Seen: 23 hrs ago

St. Louis (STL)to

Jacksonville (JAX)
Depart: 10/21/2026

One-way

Basic

From
$121
Seen: 22 hrs ago

St. Louis (STL)to

Jacksonville (JAX)
Depart: 08/29/2026

One-way

Basic

From
$140
Seen: 17 hrs ago

St. Louis (STL)to

Jacksonville (JAX)
Depart: 09/23/2026

One-way

Basic

From
$140
Seen: 16 hrs ago

St. Louis (STL)to

Jacksonville (JAX)
Depart: 10/31/2026

One-way

Basic

From
$140
Seen: 7 hrs ago

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Explore flights from St. Louis to Jacksonville

Aug 2026
From$140*
Seen: 24 minutes ago
One Way/Basic
Sep 2026
From$119*
Seen: 1 hour ago
One Way/Basic
Oct 2026
From$121*
Seen: 22 hrs ago
One Way/Basic
cmp-daily-histogram-bars-legend-min-price-aria-label $140
cmp-daily-histogram-bars-legend-max-price-aria-label $460
Displaying fares for August-2026
  • STL–JAX, 08/01/2026: From $460
    01

    Sat

    AUG

  • STL–JAX, 08/02/2026: From $460
    02

    Sun

  • STL–JAX, 08/03/2026: From $460
    03

    Mon

  • STL–JAX, 08/04/2026: From $460
    04

    Tue

  • STL–JAX, 08/05/2026: From $460
    05

    Wed

  • STL–JAX: cmp-view-offers-disclaimer. Find Offers
    06

    Thu

  • STL–JAX, 08/07/2026: From $339
    07

    Fri

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    08

    Sat

  • STL–JAX, 08/09/2026: From $339
    09

    Sun

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

    Mon

  • STL–JAX, 08/11/2026: From $368
    11

    Tue

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    12

    Wed

  • STL–JAX, 08/13/2026: From $339
    13

    Thu

  • STL–JAX, 08/14/2026: From $214
    14

    Fri

  • STL–JAX, 08/15/2026: From $214
    15

    Sat

  • STL–JAX, 08/16/2026: From $214
    16

    Sun

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

    Mon

  • STL–JAX, 08/18/2026: From $214
    18

    Tue

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

    Wed

  • STL–JAX, 08/20/2026: From $214
    20

    Thu

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

    Fri

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

    Sat

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    23

    Sun

  • STL–JAX, 08/24/2026: From $140
    24

    Mon

  • STL–JAX, 08/25/2026: From $168
    25

    Tue

  • STL–JAX, 08/26/2026: From $140
    26

    Wed

  • STL–JAX, 08/27/2026: From $140
    27

    Thu

  • STL–JAX, 08/28/2026: From $157
    28

    Fri

  • STL–JAX, 08/29/2026: From $140
    29

    Sat

  • STL–JAX: cmp-view-offers-disclaimer. Find Offers
    30

    Sun

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

    Mon

    • Range$140-$460

    *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:
    Jacksonville International Airport
    Average flight time:
    1 hour 55 minutes
    Distance:
    753 miles

    Route Information

    140† Weekly flights
    • 2‡ Nonstop flights 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 Jacksonville is 1 hour 55 minutes.
    There are 140 weekly flights from St. Louis to Jacksonville on Southwest Airlines.
    Yes, Southwest flies nonstop from St. Louis to Jacksonville 2 times per day from Monday through Friday.
    Yes, Southwest flies nonstop from St. Louis to Jacksonville 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 Jacksonville with Southwest, check out our Low Fare Calendar.
    You can rent a car at Jacksonville International Airport book yours with your flight.
    Yes! Flights from St. Louis to Jacksonville—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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