Cheap flights from St. Louis to Las Vegas (STL - LAS)

Know your dates, get live prices in seconds:

From
To
Depart
Return
Any month
Compare vs. Cheapflights |
From
To
Depart
Depart
Time
Anytime
From
To
Depart
Depart
Time
Anytime
From
To
Depart
Depart
Time
Anytime
From
To
Depart
Depart
Time
Anytime
From
To
Depart
Depart
Time
Anytime
From
To
Depart
Depart
Time
Anytime

We work with more than 300 partners to bring you better travel deals

The best prices from Lambert-St Louis to Las Vegas Harry Reid Intl are usually found in September or January, booked 56 days in advance, depart on a Tuesday or Monday and return on a Tuesday

How to find the cheapest flight from
St. Louis (STL) to Las Vegas (LAS)

All the information you need to plan the best STL to LAS flight in 2022: compare St. Louis to Las Vegas flight prices with the expected peak season, weather and rainfall in Las Vegas.
STL - LAS
Price
$152 - $206
LAS
Temperature
48.2 - 93.2 °F
LAS
Rainfall
0.1 - 0.8 inches

Popular in

March

High demand for flights, 12% potential price rise

Cheapest in

September

Best time to find cheap flights, 16% potential price drop

Round-trip from

$152

From Lambert-St Louis to Las Vegas Harry Reid Intl

One-way from

$50

One-way flight from Lambert-St Louis to Las Vegas Harry Reid Intl

Flight route prices based on searches on Cheapflights within the last 3 days, monthly prices based on aggregated historical data.
What is the cheapest month to fly from St. Louis to Las Vegas?

September can be a great time to fly to Las Vegas from St. Louis with a flight ticket averaging about $181. Cheapflights users have found deals in the month of September for as cheap as $113. The most expensive prices can be found in the month of March.

When is the cheapest time to fly from St. Louis to Las Vegas (STL - LAS)?

It’s typically best to fly out from St. Louis to Las Vegas at noon. Doing so could potentially save you 44% on the flight price compared to flying in the morning, which is usually more expensive.

What is the cheapest day to fly round-trip from St. Louis to Las Vegas?

Users have found that leaving on a Monday can be a cost-effective option. It’s possible to save up to 52% on your flight compared to booking on days when demand is much higher.

How far in advance should I book a flight from St. Louis to Las Vegas?

Travelers have found it’s best to book a flight 25 days in advance to save up to 23% compared to booking the same week of travel. As your travel date approaches, the cost of this flight route may potentially increase. While opting to book 25 days out may not be an option for all, there are still additional ways to secure a deal in the near future. You might find a flight from St. Louis to Las Vegas 1-2 weeks in advance for as low as $177, or $216 for flights within the next 24 hours.

Cheap flights from St. Louis to Las Vegas in May, June 2022

The best prices found for STL to LAS flights for May, June
31 May - 2 Jun
$138pp
STL
Lambert-St Louis
Spirit Airlines
Non-Stop
LAS
Las Vegas Harry Reid Intl
LAS
Las Vegas Harry Reid Intl
Spirit Airlines
Non-Stop
STL
Lambert-St Louis
31 May - 2 Jun
$142pp
STL
Lambert-St Louis
Spirit Airlines
Non-Stop
LAS
Las Vegas Harry Reid Intl
LAS
Las Vegas Harry Reid Intl
Spirit Airlines
Non-Stop
STL
Lambert-St Louis
29 May - 2 Jun
$160pp
STL
Lambert-St Louis
Multiple Airlines
Non-Stop
LAS
Las Vegas Harry Reid Intl
LAS
Las Vegas Harry Reid Intl
Spirit Airlines
Non-Stop
STL
Lambert-St Louis

Lambert-St Louis to Las Vegas 2022 flight deals

Cheap flights to Las Vegas from St. Louis found for this year
17 Aug - 23 Aug
$103pp
STL
Lambert-St Louis
Frontier
Non-Stop
LAS
Las Vegas Harry Reid Intl
LAS
Las Vegas Harry Reid Intl
Frontier
Non-Stop
STL
Lambert-St Louis
9 Aug - 16 Aug
$108pp
STL
Lambert-St Louis
Frontier
Non-Stop
LAS
Las Vegas Harry Reid Intl
LAS
Las Vegas Harry Reid Intl
Frontier
Non-Stop
STL
Lambert-St Louis
24 Aug - 30 Aug
$112pp
STL
Lambert-St Louis
Frontier
Non-Stop
LAS
Las Vegas Harry Reid Intl
LAS
Las Vegas Harry Reid Intl
Frontier
Non-Stop
STL
Lambert-St Louis

Non-stop flights to Las Vegas from St. Louis

Save time with St. Louis to Las Vegas direct flight deals
17 Aug - 23 Aug
$103pp
STL
Lambert-St Louis
Frontier
Non-Stop
LAS
Las Vegas Harry Reid Intl
LAS
Las Vegas Harry Reid Intl
Frontier
Non-Stop
STL
Lambert-St Louis
9 Aug - 16 Aug
$108pp
STL
Lambert-St Louis
Frontier
Non-Stop
LAS
Las Vegas Harry Reid Intl
LAS
Las Vegas Harry Reid Intl
Frontier
Non-Stop
STL
Lambert-St Louis
24 Aug - 30 Aug
$112pp
STL
Lambert-St Louis
Frontier
Non-Stop
LAS
Las Vegas Harry Reid Intl
LAS
Las Vegas Harry Reid Intl
Frontier
Non-Stop
STL
Lambert-St Louis

Last minute flights from St. Louis to Las Vegas

Late deals on round-trip flights to Las Vegas from St. Louis, departing today and this week
31 May - 2 Jun
$138pp
STL
Lambert-St Louis
Spirit Airlines
Non-Stop
LAS
Las Vegas Harry Reid Intl
LAS
Las Vegas Harry Reid Intl
Spirit Airlines
Non-Stop
STL
Lambert-St Louis
31 May - 2 Jun
$142pp
STL
Lambert-St Louis
Spirit Airlines
Non-Stop
LAS
Las Vegas Harry Reid Intl
LAS
Las Vegas Harry Reid Intl
Spirit Airlines
Non-Stop
STL
Lambert-St Louis
29 May - 2 Jun
$160pp
STL
Lambert-St Louis
Multiple Airlines
Non-Stop
LAS
Las Vegas Harry Reid Intl
LAS
Las Vegas Harry Reid Intl
Spirit Airlines
Non-Stop
STL
Lambert-St Louis

One-way flights to Harry Reid Intl from St. Louis

The cheapest one-way flights from St. Louis to Las Vegas
2:11 pm - 3:41 pm
Frontier
Nonstop
3h 30m
STL - LAS
Frontier
$50
JustFly
3:09 am - 4:47 am
Frontier
Nonstop
3h 38m
STL - LAS
Frontier
$51
Flights by SU
2:11 pm - 3:41 pm
Frontier
Nonstop
3h 30m
STL - LAS
Frontier
$60
Flights by SU

Related info for your journey

Useful info, stats and facts about <span class="emphasized">St. Louis</span> to <span class="emphasized">Las Vegas</span> flights.

Flight FAQs

From St. Louis to Las Vegas

What airports do I use to fly from St. Louis to Las Vegas?

If you book a flight from St. Louis to Las Vegas, you will be flying from Lambert-St Louis to Harry Reid Intl. Flights to Las Vegas Harry Reid Intl (LAS) from Lambert-St Louis (STL) take 3h 23m for a nonstop flight. There are 8 flights from Lambert-St Louis to Las Vegas per day from 10 airlines.

Which airlines flying from Lambert-St Louis to Las Vegas Harry Reid Intl have flexible cancellations due to COVID-19?

Spirit Airlines, Frontier, and American Airlines are some of the carriers that may have flexible cancellation policies. You can use our site to filter for other airlines that may also have this kind of flexibility.

Can I find flights from St. Louis to Las Vegas for under $200 on Cheapflights?

Yes, there are multiple flights from St. Louis to Las Vegas for under $200. The cheapest flight booked recently is on Frontier for just $103, but on average you can expect to pay $146.

Are there nonstop flights from St. Louis to Las Vegas for under $200 on Cheapflights?

Cheapflights has at least 20 direct flights from St. Louis to Las Vegas under $200. A good price for a nonstop flight from St. Louis to Las Vegas is less than $149.

Are there last-minute flights available from St. Louis to Las Vegas for under $200?

There are currently 20+ open flights from St. Louis to Las Vegas within the next 7 days for less than $200.

What days are nonstop flights available from St. Louis to Las Vegas?

Nonstop flights can be found on the following days: Sunday, Friday.

How popular is this St. Louis to Las Vegas flight route?

Within the past month, 300 users have taken a look at flights from Lambert-St Louis to Las Vegas Harry Reid Intl.

How many flights depart from St. Louis to Las Vegas on average per day?

Per day, 2 flights depart from St. Louis to Las Vegas on average.
Morning (6am - Noon) - 50% of flight departures
Afternoon (Noon - 6pm) - 50% of flight departures

How long is the flight from St. Louis to Las Vegas?

Frontier and Spirit Airlines can get you from St. Louis to Las Vegas in just under 3h 26m. Your travel time will be generally consistent. There are 1375 mi between St. Louis and Las Vegas. Generally, flights for this route are nonstop.

What are the cheapest airlines flying from St. Louis to Las Vegas round-trip?

Cheapflights users have booked flights from St. Louis to Las Vegas round-trip from $103. Another airline that can offer you cheap pricing is Spirit Airlines. Frontier is priced at 42% lower than the current average price of a flight leaving 3 months from now.

What are the most popular airlines that fly from St. Louis to Las Vegas?

Consider American Airlines, Alaska Airlines or Delta when booking your flight. These represent the most popular airlines when flying from St. Louis to Las Vegas.

What are the most reliable airlines from St. Louis to Las Vegas?

Consider Southwest (66%), Frontier (60%) or Spirit Airlines (51%) when booking your flight. These represent the most reliable airlines when flying from St. Louis to Las Vegas.

What are the cheapest flights from St. Louis to Las Vegas?

While on average a flight from St. Louis to Las Vegas is generally $686, our data shows the cheapest flight currently is $61. When looking at the most popular route, (Lambert-St Louis - Las Vegas Harry Reid Intl), you can expect to pay $112 for that flight.

How long is the flight from St. Louis to Las Vegas?

The flight from St. Louis to Las Vegas usually takes less than three hours, so you can get checked into your hotel and ready to see the sites in no time.

Which airlines operate flights from St. Louis to Las Vegas?

Two airlines fly between St. Louis and Las Vegas. Southwest Airlines operates the bulk of nonstop flights, and Frontier Airlines also offers direct service between the two cities.

How frequent are flights between St. Louis to Las Vegas?

Airline schedules to Las Vegas vary based on the day of the week, but on most days, you can choose from a minimum of four direct flights from St. Louis.

Which airports serve St. Louis to Las Vegas?

In St. Louis, your flight will depart from the St. Louis Lambert International Airport. If you want to leave your car at home, take the GO BEST airport shuttle or ride the MetroLink light rail from the city to the terminal. Your flight to Vegas arrives at the Las Vegas McCarran International Airport, which lies just a few miles from the iconic Strip.

Which direct flight route between St. Louis to Las Vegas is cheapest?

Of the two airlines that fly the St. Louis to Las Vegas route, Frontier tends to offer lower prices. Before you book, be sure to check baggage fees, as they can add a large amount to the final ticket price.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.

COVID Restrictions

View COVID Travel Restrictions for Las Vegas, NV

Do I need a COVID test to fly to Las Vegas from St. Louis?

Information is based on travel restrictions for travel to Las Vegas Harry Reid Intl within the United States

Most visitors from Lambert-St Louis need to provide a negative COVID-19 test result and/or quarantine to enter Las Vegas Harry Reid Intl.

COVID-19 testing requirements
Visitors from Lambert-St Louis must present a negative RT-PCR (NAAT) or Antigen (quick-test) test taken 1 day for RT-PCR (NAAT) and 1 day for Antigen (quick-test) before departing to Las Vegas Harry Reid Intl.

Quarantine requirements
Visitors from Lambert-St Louis are not required to quarantine after entering Las Vegas Harry Reid Intl.

Do I need a test to fly back to St. Louis from Las Vegas?

Returning to Lambert-St Louis from Las Vegas Harry Reid Intl

COVID-19 testing requirements
Visitors from Las Vegas Harry Reid Intl must present a negative RT-PCR (NAAT) or Antigen (quick-test) test taken 1 day for RT-PCR (NAAT) and 1 day for Antigen (quick-test) before departing to Lambert-St Louis.

Quarantine requirements
Visitors from Las Vegas Harry Reid Intl are not required to quarantine after entering Lambert-St Louis.

Hide COVID Travel Restrictions for Las Vegas, NV

Alternative routes for St. Louis to Las Vegas

See prices for flight routes from nearby airports that may be better suited for you.

Destination information for Las Vegas

Things to know before you go - useful duration and weather info for your trip from St. Louis to Las Vegas.
Flight duration from STL to LAS
3h 21m
Average temperature for May in Las Vegas
91.4 °F
Avg rainfall for May in Las Vegas
0.1 ″

Airports servicing St. Louis

Airports servicing Las Vegas

Top 9 airlines flying from Lambert-St Louis to Las Vegas Harry Reid Intl

The chart below displays the airlines Cheapflights users traveling from St. Louis to Las Vegas choose most often. Cheapest and average prices are based on aggregated data from the past 12 months.
Airline Cheapest Average Flexibility On-time COVID-19 safety
Juneyao Airlines
$12 $22 No cancel fee 66%

We couldn't confirm the COVID-19 safety measures taken by Juneyao Airlines. Please check directly on their website for additional information.

Sun Country Air
$61 $210 No cancel fee 83%
Spirit Airlines
$68 $163 No cancel fee 65%
Frontier
$70 $162 No cancel fee 62%
American Airlines
$85 $394 No cancel fee 71%
Delta
$127 $366 No cancel fee N/A
Allegiant Air
$138 $258 No cancel fee 88%
United Airlines
$139 $385 No cancel fee 69%
Alaska Airlines
$163 $528 No cancel fee 75%

Hourly flight availability from St. Louis to Las Vegas

See what time of day planes typically take off from St. Louis towards Las Vegas.
Morning 6 AM to noon 53% of STL to LAS departures
Evening 6 PM to midnight 22% of STL to LAS departures
Afternoon Noon to 6 PM 14% of STL to LAS departures
Early morning Midnight to 6 AM 11% of STL to LAS departures
Midnight
6 AM
Noon
6 PM
Weekly flight availability
from St. Louis to Las Vegas
See how many times per day planes take to the skies headed from St. Louis to Las Vegas.
Sunday
8 daily flights
Monday
9 daily flights
Tuesday
8 daily flights
Wednesday
8 daily flights
Thursday
8 daily flights
Friday
9 daily flights
Saturday
9 daily flights
Home North America USA Nevada Las Vegas Cheap flights from St. Louis to Las Vegas