$129 Cheap American Airlines flights St. Louis (STL) to Las Vegas (LAS)

View $129 flight on Fri, Jan 9, 2026Opens in a new window

$129 Cheap American Airlines flights St. Louis (STL) to Las Vegas (LAS)

Prices were available within the past 7 days and start at $129 for one-way flights and $297 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Sat, Mar 28 - Tue, Mar 31
STL
St. Louis
LAS
Las Vegas
$297 Roundtrip, found 2 days ago
$297
Roundtrip
found 2 days ago
Select American Airlines flight, departing Sat, Mar 28 from St. Louis to Las Vegas, returning Tue, Mar 31, priced at $297 found 2 days 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.
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, Southwest Airlines, United
Popular airline
Delta
Distance
2188 km
Average flight time
1 hour 40 mins