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Find low faresSouthwest® flights from Amarillo to St. Louis from $184
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1 Passenger
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Low fares from Amarillo to St. Louis
$
Amarillo (AMA)to
St. Louis (STL)
Depart: 03/10/2026
One-way
Basic
From
$184
Seen: 5 hrs ago
Amarillo (AMA)to
St. Louis (STL)
Depart: 03/09/2026
One-way
Basic
From
$199
Seen: 5 hrs ago
Amarillo (AMA)to
St. Louis (STL)
Depart: 03/10/2026
One-way
Choice
From
$219
Seen: 5 hrs ago
Amarillo (AMA)to
St. Louis (STL)
Depart: 03/12/2026
One-way
Basic
From
$224
Seen: 10 hrs ago
Amarillo (AMA)to
St. Louis (STL)
Depart: 03/09/2026
One-way
Choice
From
$234
Seen: 5 hrs ago
Amarillo (AMA)to
St. Louis (STL)
Depart: 03/12/2026
One-way
Choice
From
$259
Seen: 10 hrs ago
Explore flights from Amarillo to St. Louis
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Flight Details
Departing from:
Rick Husband Amarillo International Airport
Arriving at:
Lambert-St Louis Int'l Airport
Distance:
672 miles
Route Information
85† 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 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.