$139 Cheap United flights St. Louis (STL) to Las Vegas (LAS)

View $139 flight on Tue, Oct 14, 2025Opens in a new window

$139 Cheap United flights St. Louis (STL) to Las Vegas (LAS)

Prices were available within the past 7 days and start at $139 for one-way flights and $373 for roundtrip, for the period specified. Prices and availability are subject to change. Additional terms apply.
United
Thu, Jul 3 - Fri, Jul 11
STL
St. Louis
LAS
Las Vegas
$373
Roundtrip
Found 1 day ago
Select United flight, departing Thu, Jul 3 from St. Louis to Las Vegas, returning Fri, Jul 11, priced at $373 Found 1 day ago
United
Thu, Jul 3 - Fri, Jul 11
STL
St. Louis
LAS
Las Vegas
$400
Roundtrip
Found 1 day ago
Select United flight, departing Thu, Jul 3 from St. Louis to Las Vegas, returning Fri, Jul 11, priced at $400 Found 1 day ago
United
Thu, Jul 3 - Fri, Jul 11
STL
St. Louis
LAS
Las Vegas
$409
Roundtrip
Found 1 day ago
Select United flight, departing Thu, Jul 3 from St. Louis to Las Vegas, returning Fri, Jul 11, priced at $409 Found 1 day ago
United
Thu, Jul 3 - Fri, Jul 11
STL
St. Louis
LAS
Las Vegas
$412
Roundtrip
Found 1 day ago
Select United flight, departing Thu, Jul 3 from St. Louis to Las Vegas, returning Fri, Jul 11, priced at $412 Found 1 day ago
United
Thu, Jul 3 - Fri, Jul 11
STL
St. Louis
LAS
Las Vegas
$527
Roundtrip
Found 1 day ago
Select United flight, departing Thu, Jul 3 from St. Louis to Las Vegas, returning Fri, Jul 11, priced at $527 Found 1 day ago
Flights from St. Louis (STL) to Las Vegas (LAS)
Origin airport
Lambert-St. Louis Intl.
Destination airport
Harry Reid Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, Frontier Airlines, Spirit Airlines, United
Popular airline
Delta
Distance
2188 km
Average flight time
1 hour 35 mins