Southwest® flights from Amarillo to St. Louis from $135

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Low fares from Amarillo to St. Louis

$

Amarillo (AMA)to

St. Louis (STL)
Depart: 01/04/2027

One-way

Basic

From
$135
Seen: 3 hrs ago

Amarillo (AMA)to

St. Louis (STL)
Depart: 11/13/2026

One-way

Basic

From
$145
Seen: 6 hrs ago

Amarillo (AMA)to

St. Louis (STL)
Depart: 12/11/2026

One-way

Basic

From
$145
Seen: 32 minutes ago

Amarillo (AMA)to

St. Louis (STL)
Depart: 01/04/2027

One-way

Choice

From
$179
Seen: 3 hrs ago

Amarillo (AMA)to

St. Louis (STL)
Depart: 11/27/2026

One-way

Basic

From
$180
Seen: 41 minutes ago

Amarillo (AMA)to

St. Louis (STL)
Depart: 12/11/2026

One-way

Choice

From
$209
Seen: 32 minutes ago

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Explore flights from Amarillo to St. Louis

Oct 2026
From$317*
Seen: 48 minutes ago
One Way/Basic
Nov 2026
From$145*
Seen: 6 hrs ago
One Way/Basic
Dec 2026
From$145*
Seen: 32 minutes ago
One Way/Basic
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Displaying fares for October-2026
  • AMA–STL: cmp-view-offers-disclaimer. Find Offers
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  • AMA–STL, 10/22/2026: From $429
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  • AMA–STL, 10/31/2026: From $317
    31

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    NOV

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  • AMA–STL, 11/06/2026: From $259
    06

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    11

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    12

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  • AMA–STL, 11/13/2026: From $145
    13

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    • Range$145-$429

    *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:
    Rick Husband Amarillo International Airport
    Arriving at:
    Lambert-St Louis Int'l Airport
    Distance:
    672 miles

    Questions we hear the most

    There are 85 weekly flights from Amarillo to St. Louis on Southwest Airlines.
    To find the lowest fares by day and time to fly Amarillo 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 Amarillo 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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