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Find low faresSouthwest® flights from Las Vegas to St. Louis from $100
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Low fares from Las Vegas to St. Louis
$
Las Vegas (LAS)to
St. Louis (STL)
Depart: 04/04/2026
One-way
Basic
From
$100
Seen: 5 hrs ago
Las Vegas (LAS)to
St. Louis (STL)
Depart: 02/28/2026
One-way
Basic
From
$108
Seen: 6 hrs ago
Las Vegas (LAS)to
St. Louis (STL)
Depart: 02/21/2026
One-way
Basic
From
$108
Seen: 3 hrs ago
Las Vegas (LAS)to
St. Louis (STL)
Depart: 02/26/2026
One-way
Basic
From
$119
Seen: 13 hrs ago
Las Vegas (LAS)to
St. Louis (STL)
Depart: 03/03/2026
One-way
Basic
From
$137
Seen: 2 hrs ago
Las Vegas (LAS)to
St. Louis (STL)
Depart: 04/04/2026
One-way
Choice
From
$140
Seen: 5 hrs ago
Explore flights from Las Vegas to St. Louis
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Flight Details
Departing from:
McCarran International Airport
Arriving at:
Lambert-St Louis Int'l Airport
Average flight time:
3 hours 12 minutes
Distance:
1371 miles
Route Information
156† Weekly flights
- 5‡ Nonstop flights per day Monday through Friday
- 4‡ Nonstop flights on Saturday
- 6‡ 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.
Explore St. Louis
St. Louis is well-known for a number of reasons: it was the birthplace of the ice cream cone, and, most importantly, it’s the American city with the most free tourist attractions outside of Washington, D.C. Start your vacation with one of said free (and kid-friendly!) attractions, such as the iconic St. Louis Zoo, or ride the elevator up the 630-foot Gateway Arch for unbeatable city views. Kids and adults alike will love the City Museum with its playground full of climbing structures, slides, and more.
If you’re looking for something a little more meditative, St. Louis is a great city for art. Spend an afternoon checking out the collections at the St. Louis Art Museum, the Contemporary Art Museum of St. Louis, and the Mildred Lane Kemper Art Museum, or catch a concert at the St. Louis Symphony. Rather be outside? Pay a visit to Laumeier Sculpture Park, a green space with more than 70 outdoor sculptures that also hosts events in its music amphitheater.
Questions we hear the most
The average flight time from Las Vegas to St. Louis is 3 hours 12 minutes.
There are 156 weekly flights from Las Vegas to St. Louis on Southwest Airlines.
Yes, Southwest flies nonstop from Las Vegas to St. Louis 5 times per day from Monday through Friday.
Yes, Southwest flies nonstop from Las Vegas to St. Louis 4 times per day on Saturdays and 6 times per day on Sundays.
To find the lowest fares by day and time to fly Las Vegas 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 Las Vegas 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.