Expect security screening at STL to take 5-10 minutes during off-peak times. Check real-time wait times online before heading to the airport.

Most accurate provider | CheapOair 3 stars |
|---|---|
Most trusted provider | CheapOair 3 stars |
Round-trip from | $154 (Frontier) |
One-way from | $85 (Kiwi.com) |
Popular in | June |
Cheapest in | February |
Average price | $296 |
Good round-trip deal | $251 or less |
Good one-way deal | $119 or less |
Fly from
Fly to
Route
Depart
Return
Price
St. LouisLas Vegas
STL - LAS
STLLAS
Lambert-St Louis
vie. 1/30
3:31 pm-8:44 pm
1 stop7h 13m
Las Vegas Harry Reid Intl
lun. 2/2
6:15 am-2:38 pm
1 stop6h 23m
St. LouisLas Vegas
STL - LAS
STLLAS
Lambert-St Louis
lun. 1/12
10:15 am-2:45 pm
2 stops6h 30m
Las Vegas Harry Reid Intl
jue. 1/15
11:25 am-5:45 pm
1 stop4h 20m
St. LouisLas Vegas
STL - LAS
STLLAS
Lambert-St Louis
dom. 1/11
7:10 am-10:45 am
1 stop5h 35m
Las Vegas Harry Reid Intl
sáb. 1/17
11:00 am-8:05 pm
2 stops7h 05m
St. LouisLas Vegas
STL - LAS
STLLAS
Lambert-St Louis
jue. 1/15
6:00 pm-9:59 pm
1 stop5h 59m
Las Vegas Harry Reid Intl
mié. 1/21
12:59 am-9:22 am
1 stop6h 23m
St. LouisLas Vegas
STL - LAS
STLLAS
Lambert-St Louis
mar. 12/16
2:20 pm-6:18 pm
1 stop5h 58m
Las Vegas Harry Reid Intl
vie. 12/19
5:20 pm-12:54 am
1 stop5h 34m
St. LouisLas Vegas
STL - LAS
STLLAS
Lambert-St Louis
vie. 1/2
7:06 pm-11:44 pm
1 stop6h 38m
Las Vegas Harry Reid Intl
lun. 1/5
11:06 am-11:25 pm
2 stops10h 19m
St. LouisLas Vegas
STL - LAS
STLLAS
Lambert-St Louis
mar. 1/27
6:10 am-5:41 pm
2 stops13h 31m
Las Vegas Harry Reid Intl
sáb. 1/31
6:00 am-9:38 pm
2 stops13h 38m
St. LouisLas Vegas
STL - LAS
STLLAS
Lambert-St Louis
mié. 12/3
4:37 pm-8:46 pm
1 stop6h 09m
Las Vegas Harry Reid Intl
dom. 12/7
12:59 am-10:00 am
1 stop7h 01m
St. LouisLas Vegas
STL - LAS
STLLAS
Lambert-St Louis
vie. 1/16
6:00 pm-9:59 pm
1 stop5h 59m
Las Vegas Harry Reid Intl
sáb. 1/17
10:45 am-8:58 pm
2 stops8h 13m
St. LouisLas Vegas
STL - LAS
STLLAS
Lambert-St Louis
mié. 11/26
4:43 pm-8:46 pm
1 stop6h 03m
Las Vegas Harry Reid Intl
lun. 12/1
12:59 am-10:04 am
1 stop7h 05m
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy2 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*1 star | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*2 stars | |
| Price Accuracy- | Trust Score*1 star | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*1 star | |
| Price Accuracy2 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
Booking 20 days in advance of your planned departure date is, on average, the best time to get cheap flights from St. Louis to Las Vegas. The general trend is that the closer you book to the departure date, the more expensive your flight will be.
Currently, March is the cheapest month in which you can book a flight from St. Louis to Las Vegas (average of $107). Flying from St. Louis to Las Vegas in July is currently the most expensive (average of $194). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
It’s typically best to fly out from St. Louis to Las Vegas in the evening. Doing so could potentially save you 48% on the flight price compared to flying in the morning, which is usually more expensive.
Travelers seeking maximum savings on their St. Louis to Las Vegas flight should consider departing on Monday evenings when fares are most often at their lowest. Saturday mornings flights should be avoided if possible as fares are typically the most expensive at this time.
About 14% of weekly flights between St. Louis and Las Vegas have experienced delays in the past year, with the average delay time being 134 minutes.
Historically, flights departing in the morning are less likely to be delayed, whereas flights leaving in the evening tend to experience delays more often.
Saturday tends to have the lowest number of delays on this route, whereas Friday has historically faced a higher average of delays compared to other days of the week.
Over the last year, Allegiant Air have had the lowest number of delays on this route, with no flights being classified as delayed.
Comfort
Boarding
Food
Entertainment
Crew
Overall
Reviews
Mike,Aug 2025
OKC - AUS
Comfort
Boarding
Food
Entertainment
Crew
Overall
Reviews
Mike,Aug 2025
OKC - AUS
Comfort
Boarding
Food
Entertainment
Crew
Overall
Reviews
Mike,Aug 2025
OKC - AUS
Comfort
Boarding
Food
Entertainment
Crew
Overall
Reviews
Mike,Aug 2025
OKC - AUS
Comfort
Boarding
Food
Entertainment
Crew
Overall
Reviews
Mike,Aug 2025
OKC - AUS
Comfort
Boarding
Food
Entertainment
Crew
Overall
Reviews
Mike,Aug 2025
OKC - AUS
Las Vegas, with its wild atmosphere and brilliant lights, is a thrilling spot for a vacation. Whether you're visiting with the family or coming with friends, the city's energy and exuberance is sure to draw you in. From the always-busy casinos of the Strip to the classic style of Fremont Street, every inch of the city is designed to provide fun-filled memories to last a lifetime. Best of all? The Vegas attractions all sit just a quick flight from St. Louis.
Every inch of Las Vegas is designed to make an impression. Start your trip off with a bang by jumping off the edge of the Stratosphere casino and falling 829 feet on the heart-pounding Sky Jump. Closer to the south end of the Strip, get a thrill on the roller coaster that runs over the New York New York casino. Want to stay close to the earth? Opt for a boat ride through the canals of the elegant Venetian hotel and casino. When you're ready for a break from gambling, check out the Hispanic Museum of Nevada or go for a hair-raising spin in a stock care around the track of the Las Vegas Motor Speedway.
Check out prices for your trip to Las Vegas today using the Cheapflights smart search engine. Simply enter your dates to see all available times and prices.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$104 | Average$238 | FlexibilityNo cancel fee | On-time88% | |
| Cheapest$113 | Average$245 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$120 | Average$210 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$166 | Average$384 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$171 | Average$424 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$238 | Average$473 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$257 | Average$403 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$276 | Average$479 | FlexibilityNo cancel fee | On-time63% |