$123 Cheap American Airlines flights St. Louis (STL) to Las Vegas (LAS)

View $123 flight on Thu, Jan 22, 2026Opens in a new window

$123 Cheap American Airlines flights St. Louis (STL) to Las Vegas (LAS)

Prices were available within the past 7 days and start at $123 for one-way flights and for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

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.
Distance
2188 km
Average flight time
1 hour 39 mins