$83 Find Cheap Flights from St. Louis to Las Vegas - Compare and Save

These are the earliest and latest flight times available from St. Louis to Las Vegas:

• Earliest: departs at 5:05 am and lands at 8:43 am
• Latest: departs at 10:45 pm and lands at 2:23 am.

The flight takes about 3h 38m.

Three cabin classes are available on flights from St. Louis to Las Vegas:

• Economy Class
• Business Class
• First Class

A nonstop flight from St. Louis to Las Vegas takes 3h 38m, covering 1,367 miles.

No, a passport is not required for this domestic route, but you will need a real ID-compliant driver's license, a state ID or another TSA-accepted form of identification.

Round-trip flights from St. Louis to Las Vegas range from $233 to $456, with an average of $326 over the past 12 months. Anything below $233 counts as a good deal.

Last-minute fares on this route (booked within two weeks of departure) run 25% above the $326 route average. Book 7 weeks before departure for the lowest fares.

On this route, layover flights are cheaper than nonstop options on average. Layover fares average $248 round-trip via Wichita Eisenhower National (ICT), compared to $344 for nonstop.

There is no standard. Checked-bag policies vary by airline on this route. Most carriers charge $45–$100 for the first checked bag in economy. Premium fares and elite-status bookings typically include a free checked bag.

The Boeing 737 MAX 8 family is used most often on this route, operated mainly by Southwest. Other aircraft seen on the route include Boeing 737-800 Passenger/BBJ2 (winglets) variants.

Morning is the busiest departure period on St. Louis to Las Vegas flights, with 40% of flights leaving in that window. Afternoon departures account for 40%, evening flights for 20%, and night flights for 0%.

JetBlue is the only airline on the St. Louis to Las Vegas route offering in-flight Wi-Fi. Pricing depends on fare class.

One-way fares from St. Louis to Las Vegas are currently lower than usual. Average one-way flight prices are about $147, which is 25% below the typical average for this route.

Flights from St. Louis to Las Vegas usually depart from Lambert-St Louis (STL) and arrive at Las Vegas Harry Reid Intl (LAS).

Morning flights have the fewest delays on this route, while evening departures tend to have the most.

A flight is considered delayed when it departs 15 minutes or more after its scheduled time. This is the standard used by the US Department of Transportation and most airline industry reporting. On the St. Louis to Las Vegas route, 20% of flights were delayed in the past 3 months, with delays averaging 2h 20m.

One-stop flights from St. Louis to Las Vegas most commonly connect through:

• Denver Intl (DEN) - 48% of one-stop connections
• Salt Lake City (SLC) - 13% of one-stop connections
• Dallas/Fort Worth (DFW) - 12% of one-stop connections
• Phoenix Sky Harbor Intl (PHX) - 10% of one-stop connections

Yes. Flexible dates can save you up to 14% on flights from St. Louis to Las Vegas. Monday is the cheapest departure day at $297 round-trip on average, while Thursday is the most expensive at $344, a difference of $47.

KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

2 airlines operate flights between St. Louis and Las Vegas. The airlines offering nonstop flights on this route include:

• Southwest
• Frontier

Flying via Wichita Eisenhower National (ICT) gives the shortest average 1-stop total travel time at 4h 44m, compared with 5h 12m via Kansas City (MCI) and 5h 24m via Dallas Love Field (DAL).

Las Vegas is 2 hours behind St. Louis (Pacific Time vs Central Time). Plan for the time shift when scheduling connections or first-day activities.

Some of the most popular sights in Las Vegas are Fremont Street Experience, Las Vegas Convention Center and Wynn Las Vegas. These are among the most viewed places in Las Vegas on KAYAK.

Among airlines operating St. Louis to Las Vegas flights:

• Frontier: offers free seat selection
• Southwest: offers free seat selection

Extra legroom and free seat selection availability depends on fare class and route.

Here are some options for this route, based on selected ticket types and cabin classes:

• Frontier: a cabin bag and a checked bag in Economy Class
• Southwest: a cabin bag and a checked bag in Economy Class

Bag allowance can vary by ticket type, cabin class, route and airline, so always check the fare details before booking.

At Terminal 1, bus service is on Level 0 and serves two routes. From Terminal 3, the inter-terminal shuttle from Baggage Claim provides access to the bus stop at Terminal 1. Shuttle service at Terminal 1 is on the west side of the baggage claim area outside exit doors 7-13. At Terminal 3, shuttle service is located outside Level 0.

Yes, STL has toll-free motel/hotel phone centers in Terminal 1 and Terminal 2. In Terminal 2, the St. Louis Visitor Center is on the lower level next to door 12. The ride-app passenger pickup zone is on Arrivals Drive (lower), at the curb between entries 15 and 16.

Several car rental agencies are available at LAS. The rental car facility is located away from both terminals and a courtesy shuttle takes travelers there.

There are three lactation suites located near Gate A10, Gate C9, and Gate E33.

Yes. STL permits service animals and has pet-relief amenities inside and outside its terminals, including in its concourses. Harry Reid International Airport (LAS) also has designated indoor and outdoor relief areas for pets and service animals, including outside Terminal 1 Baggage Claim and Terminal 1 Ticketing, along with other designated indoor and outdoor pet-relief areas.

Lounges at St. Louis Lambert International Airport (STL) include American Airlines Admirals Club in Terminal 1 and Wingtips Lounge in Terminal 2. Wingtips Lounge is open regardless of airline or class after paying for a day pass. Admirals Club One-Day Pass holders must have same-day travel on a flight marketed or operated by American or marketed and operated by a oneworld carrier. Admission is capacity-controlled.