Southwest® flights from Pittsburgh to St. Louis from $106

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Low fares from Pittsburgh to St. Louis

$

Pittsburgh (PIT)to

St. Louis (STL)
Depart: 11/24/2026

One-way

Basic

From
$106
Seen: 23 hrs ago

Pittsburgh (PIT)to

St. Louis (STL)
Depart: 12/02/2026

One-way

Basic

From
$106
Seen: 16 hrs ago

Pittsburgh (PIT)to

St. Louis (STL)
Depart: 12/01/2026

One-way

Basic

From
$106
Seen: 9 hrs ago

Pittsburgh (PIT)to

St. Louis (STL)
Depart: 01/12/2027

One-way

Basic

From
$106
Seen: 10 hrs ago

Pittsburgh (PIT)to

St. Louis (STL)
Depart: 12/22/2026

One-way

Basic

From
$106
Seen: 10 hrs ago

Pittsburgh (PIT)to

St. Louis (STL)
Depart: 12/23/2026

One-way

Basic

From
$106
Seen: 4 hrs ago

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Explore flights from Pittsburgh to St. Louis

Oct 2026
From$455*
Seen: 6 hrs ago
One Way/Basic
Nov 2026
From$106*
Seen: 23 hrs ago
One Way/Basic
Dec 2026
From$106*
Seen: 10 hrs ago
One Way/Basic
cmp-daily-histogram-bars-legend-min-price-aria-label $122
cmp-daily-histogram-bars-legend-max-price-aria-label $533
Displaying fares for October-2026
  • PIT–STL: cmp-view-offers-disclaimer. Find Offers
    22

    Thu

    OCT

  • PIT–STL, 10/23/2026: From $533
    23

    Fri

  • PIT–STL, 10/24/2026: From $533
    24

    Sat

  • PIT–STL, 10/25/2026: From $533
    25

    Sun

  • PIT–STL, 10/26/2026: From $533
    26

    Mon

  • PIT–STL, 10/27/2026: From $533
    27

    Tue

  • PIT–STL, 10/28/2026: From $455
    28

    Wed

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

    Thu

  • PIT–STL, 10/30/2026: From $455
    30

    Fri

  • PIT–STL, 10/31/2026: From $455
    31

    Sat

  • PIT–STL, 11/01/2026: From $455
    01

    Sun

    NOV

  • PIT–STL, 11/02/2026: From $455
    02

    Mon

  • PIT–STL, 11/03/2026: From $455
    03

    Tue

  • PIT–STL, 11/04/2026: From $264
    04

    Wed

  • PIT–STL: cmp-view-offers-disclaimer. Find Offers
    05

    Thu

  • PIT–STL, 11/06/2026: From $264
    06

    Fri

  • PIT–STL, 11/07/2026: From $264
    07

    Sat

  • PIT–STL: cmp-view-offers-disclaimer. Find Offers
    08

    Sun

  • PIT–STL, 11/09/2026: From $122
    09

    Mon

  • PIT–STL, 11/10/2026: From $122
    10

    Tue

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

    Wed

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

    Thu

  • PIT–STL, 11/13/2026: From $122
    13

    Fri

  • PIT–STL, 11/14/2026: From $122
    14

    Sat

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

    Sun

  • PIT–STL, 11/16/2026: From $122
    16

    Mon

  • PIT–STL, 11/17/2026: From $122
    17

    Tue

  • PIT–STL: cmp-view-offers-disclaimer. Find Offers
    18

    Wed

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

    Thu

  • PIT–STL, 11/20/2026: From $145
    20

    Fri

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

    Sat

    • Range$122-$533

    *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:
    Pittsburgh International Airport
    Arriving at:
    Lambert-St Louis Int'l Airport
    Average flight time:
    1 hour 48 minutes
    Distance:
    554 miles

    Questions we hear the most

    The average flight time from Pittsburgh to St. Louis is 1 hour 48 minutes.
    There are 156 weekly flights from Pittsburgh to St. Louis on Southwest Airlines.
    Yes, Southwest flies nonstop from Pittsburgh to St. Louis once per day from Monday through Friday.
    Yes, Southwest flies nonstop from Pittsburgh to St. Louis once per day on Saturdays and 2 times per day on Sundays.
    To find the lowest fares by day and time to fly Pittsburgh to St. Louis with Southwest, check out our Low Fare Calendar.
    You can rent a car at Lambert-St Louis Int'l Airport book yours with your flight.
    Yes! Flights from Pittsburgh to St. Louis—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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