$118 Cheap United flights St. Louis (STL) to Las Vegas (LAS)

View $118 flight on Sat, Jul 11, 2026Opens in a new window

$118 Cheap United flights St. Louis (STL) to Las Vegas (LAS)

Prices were available within the past 7 days and start at $118 for one-way flights and $235 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Sat, Mar 28 - Tue, Mar 31
STL
St. Louis
LAS
Las Vegas
$235 Roundtrip, found 2 days ago
$235
Roundtrip
found 2 days ago
Select United flight, departing Sat, Mar 28 from St. Louis to Las Vegas, returning Tue, Mar 31, priced at $235 found 2 days ago
United
Sun, Jun 21 - Tue, Jun 23
STL
St. Louis
LAS
Las Vegas
$310 Roundtrip, found 18 hours ago
$310
Roundtrip
found 18 hours ago
Select United flight, departing Sun, Jun 21 from St. Louis to Las Vegas, returning Tue, Jun 23, priced at $310 found 18 hours ago
United
Sun, Jun 21 - Tue, Jun 30
STL
St. Louis
LAS
Las Vegas
$315 Roundtrip, found 18 hours ago
$315
Roundtrip
found 18 hours ago
Select United flight, departing Sun, Jun 21 from St. Louis to Las Vegas, returning Tue, Jun 30, priced at $315 found 18 hours ago

Find the cheapest month to fly from St. Louis (STL) to Las Vegas (LAS)

February is typically the cheapest month to fly

From $88 - $216 per traveler.

Travel information

Origin airport
Lambert-St. Louis Intl.
Destination airport
Harry Reid Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, Frontier Airlines, Southwest Airlines, United
Popular airline
Delta
Distance
2188 km
Average flight time
1 hour 40 mins

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