Cheap flights from St. Louis to Las Vegas (STL - LAS) from $42

This is the cheapest one-way flight price, found on 9/24. Prices may vary by date and flight preferences.
STL — LAS
Oct 1 — Oct 81

The best prices from Lambert-St Louis to Las Vegas Harry Reid Intl are usually found in January or February, booked 21 days in advance, depart on a Saturday or Wednesday and return on a Friday

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 2023: compare St. Louis to Las Vegas flight prices with the expected peak season, weather and rainfall in Las Vegas.

Popular in

June

Cheapest in

January

Round-trip from

$168

One-way from

$109
High demand for flights, 25% potential price rise
Best time to find cheap flights, 34% potential price drop
From Lambert-St Louis to Las Vegas Harry Reid Intl
One-way flight from Lambert-St Louis to Las Vegas Harry Reid Intl

STL - LAS

Price

$168 - $332

LAS

Temperature

48.2 - 93.2 °F

LAS

Rainfall

0.1 - 0.8 inches

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

Users have found that leaving on a Friday can be a cost-effective option. It’s possible to save up to 55% 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 18 days in advance to save up to 14% 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 18 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 $202, or $241 for flights within the next 24 hours.

What is the cheapest month to fly from St. Louis to Las Vegas?

January can be a great time to fly to Las Vegas from St. Louis with a flight ticket averaging about $209. Cheapflights users have found deals in the month of January for as cheap as $96. The most expensive prices can be found in the month of June.

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 in the evening. Doing so could potentially save you 55% on the flight price compared to flying at noon, which is usually more expensive.

Cheap Frontier flights from St. Louis to Las Vegas

Take a look at some of the lowest-priced Frontier flights heading from St. Louis to Las Vegas. Come back soon if you're not finding the exact deal you're looking for.
  • One of the most popular airlines traveling from St. Louis to Las Vegas is Frontier. Flights from Frontier traveling this route typically cost $185.18 RT. This price is typically 43% cheaper than other airlines that offer St. Louis to Las Vegas flights. When booking this route, the cheapest RT price found was $77. Lambert-St Louis Airport is the most common St. Louis airport to take off from when flying to Las Vegas. Las Vegas Harry Reid Intl Airport is the most popular arrival airport in Las Vegas. When flying from St. Louis to Las Vegas, Frontier flights are -10% more popular than any other airline flying that same route.

Cheap Spirit Airlines flights from St. Louis to Las Vegas

To aid your search, here are some of the cheapest Spirit Airlines flights we've found from St. Louis to Las Vegas. Ensure the flight price, dates, time, and airline match your criteria before you book.
  • If you’re traveling from St. Louis to Las Vegas, one of the more common airlines traveling that route is Spirit Airlines. St. Louis to Las Vegas flights are typically 43% cheaper than other airlines traveling the same route. Flights from Spirit Airlines typically cost $193.65 RT. The cheapest Spirit Airlines flight found for this route was $94. When traveling from St. Louis to Las Vegas on Spirit Airlines, the most popular airport to depart from is Lambert-St Louis Airport and the most popular airport to arrive at is Las Vegas Harry Reid Intl Airport. When flying from St. Louis to Las Vegas, Spirit Airlines flights are -16% more popular than any other airline flying that same route.

Cheap St. Louis to Las Vegas flights in September & October 2023

The best prices found for STL to LAS flights for September, October
Check out some of the best flight deals from St. Louis to Las Vegas in 2023. For more flight deals, be sure to check back very soon.

St. Louis to Las Vegas 2023 flight deals

Cheap flights to Las Vegas from St. Louis found for this year
Check out some of the best flight deals from St. Louis to Las Vegas in 2023. For more flight deals, be sure to check back very soon.

Non-stop flights to Las Vegas from St. Louis

Save time with St. Louis to Las Vegas direct flight deals
Take a look at some of the direct flights traveling from St. Louis to Las Vegas in the near future. Search for alternative flights from St. Louis to Las Vegas by utilizing the search form above.

St. Louis to Las Vegas flights leaving soon

Late deals on return flights to Las Vegas from St. Louis, departing today and this week
Users seeking a last-minute flight from St. Louis to Las Vegas should consider booking one of these fares. Tip: verify your flight details before completing your reservation.

One-way flights to Las Vegas from St. Louis

The cheapest one-way flights from St. Louis to Las Vegas
Take a look at some of the best available options we've come across on one-way flights from St. Louis to Las Vegas. Those seeking round-trip flights from St. Louis to Las Vegas should utilize the search form at the the top of the page.

Find flights from St. Louis to Las Vegas within your budget

Use the slider to find flights from St. Louis to Las Vegas that fit your budget.

Fly from

Any airport

Fly to

Any airport

Budget

$80 - $95

Route

Depart

Return

Price

Lambert-St LouisLas Vegas Harry Reid Intl

STL - LAS

STLLAS

Lambert-St Louis

Tue 10/24

1 stop19h 52m

Las Vegas Harry Reid Intl

Thu 10/26

Nonstop3h 19m

Lambert-St LouisLas Vegas Harry Reid Intl

STL - LAS

STLLAS

Lambert-St Louis

Sat 12/9

Nonstop3h 45m

Las Vegas Harry Reid Intl

Mon 12/11

Nonstop3h 03m

Lambert-St LouisLas Vegas Harry Reid Intl

STL - LAS

STLLAS

Lambert-St Louis

Mon 12/4

Nonstop3h 14m

Las Vegas Harry Reid Intl

Tue 12/5

Nonstop3h 04m

Lambert-St LouisLas Vegas Harry Reid Intl

STL - LAS

STLLAS

Lambert-St Louis

Sat 10/21

1 stop20h 31m

Las Vegas Harry Reid Intl

Tue 10/24

1 stop5h 37m

Lambert-St LouisLas Vegas Harry Reid Intl

STL - LAS

STLLAS

Lambert-St Louis

Wed 10/25

1 stop16h 00m

Las Vegas Harry Reid Intl

Fri 10/27

1 stop10h 46m

Lambert-St LouisLas Vegas Harry Reid Intl

STL - LAS

STLLAS

Lambert-St Louis

Sat 12/2

1 stop14h 42m

Las Vegas Harry Reid Intl

Wed 12/6

Nonstop3h 03m

Lambert-St LouisLas Vegas Harry Reid Intl

STL - LAS

STLLAS

Lambert-St Louis

Sat 12/2

1 stop14h 42m

Las Vegas Harry Reid Intl

Mon 12/4

Nonstop3h 04m

Lambert-St LouisLas Vegas Harry Reid Intl

STL - LAS

STLLAS

Lambert-St Louis

Mon 12/4

Nonstop3h 14m

Las Vegas Harry Reid Intl

Wed 12/6

Nonstop3h 03m

Lambert-St LouisLas Vegas Harry Reid Intl

STL - LAS

STLLAS

Lambert-St Louis

Tue 10/17

1 stop10h 15m

Las Vegas Harry Reid Intl

Sat 10/21

1 stop7h 54m

Flights are sorted by cheapest first

Deals found on 9/25

Reviews of airlines servicing Las Vegas

To help decide which airline to fly from St. Louis to Las Vegas, see what other customers have to say about Frontier and Spirit Airlines. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.9
Good
3,021 reviews

Comfort

7.9

Food

7.2

Entertainment

7.8

Crew

8.5

Boarding

8.0

Overall

7.9

Reviews

1 / 10

The AC vents were FILTHY, and the last 4 rows kept having water and ice sprayed on them from the vents. Update and clean your planes, delta.

Delta
7.9
Good
3,021 reviews
Delta
7.9
Good
3,021 reviews

Comfort

7.9

Food

7.2

Entertainment

7.8

Crew

8.5

Boarding

8.0

Overall

7.9

Reviews

1 / 10

The AC vents were FILTHY, and the last 4 rows kept having water and ice sprayed on them from the vents. Update and clean your planes, delta.

United Airlines
7.4
Good
1,890 reviews
Delta
7.9
Good
3,021 reviews

Comfort

7.9

Food

7.2

Entertainment

7.8

Crew

8.5

Boarding

8.0

Overall

7.9

Reviews

1 / 10

The AC vents were FILTHY, and the last 4 rows kept having water and ice sprayed on them from the vents. Update and clean your planes, delta.

American Airlines
7.2
Good
2,635 reviews
Delta
7.9
Good
3,021 reviews

Comfort

7.9

Food

7.2

Entertainment

7.8

Crew

8.5

Boarding

8.0

Overall

7.9

Reviews

1 / 10

The AC vents were FILTHY, and the last 4 rows kept having water and ice sprayed on them from the vents. Update and clean your planes, delta.

Spirit Airlines
6.3
Okay
1,483 reviews
Delta
7.9
Good
3,021 reviews

Comfort

7.9

Food

7.2

Entertainment

7.8

Crew

8.5

Boarding

8.0

Overall

7.9

Reviews

1 / 10

The AC vents were FILTHY, and the last 4 rows kept having water and ice sprayed on them from the vents. Update and clean your planes, delta.

Frontier
5.8
Fair
762 reviews
Delta
7.9
Good
3,021 reviews

Comfort

7.9

Food

7.2

Entertainment

7.8

Crew

8.5

Boarding

8.0

Overall

7.9

Reviews

1 / 10

The AC vents were FILTHY, and the last 4 rows kept having water and ice sprayed on them from the vents. Update and clean your planes, delta.

Related info for your journey

Useful info, stats and facts about St. Louis to Las Vegas flights.

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.

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.

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 14m for a nonstop flight. There are 7 flights from Lambert-St Louis to Las Vegas per day from 5 airlines.

Can I find flights from St. Louis to Las Vegas for under $100 on Cheapflights?

Yes, there are multiple flights from St. Louis to Las Vegas for under $100. The cheapest flight booked recently is on Frontier for just $80, but on average you can expect to pay $98.

Are there nonstop flights from St. Louis to Las Vegas for under $100 on Cheapflights?

Cheapflights has at least 20 direct flights from St. Louis to Las Vegas under $100. A good price for a nonstop flight from St. Louis to Las Vegas is less than $142.

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: Wednesday, Thursday, Friday, Saturday.

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

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

Per day, 20 flights depart from St. Louis to Las Vegas on average.
Early Morning (Midnight to 6am) - 25% of flight departures
Morning (6am - Noon) - 30% of flight departures
Afternoon (Noon - 6pm) - 20% of flight departures
Evening (6pm - Midnight) - 25% 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 45m. Your travel time can differ by up to 16h 07m. There are 1375 mi between St. Louis and Las Vegas. Both multi-stop and nonstop flights can be found to your destination and back.

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 $80. Another airline that can offer you cheap pricing is Spirit Airlines. Frontier is priced at 61% 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?

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

Consider Frontier (74%), Southwest (63%) or Spirit Airlines (52%) 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 $175, our data shows the cheapest flight currently is $51. When looking at the most popular route, (Lambert-St Louis - Las Vegas Harry Reid Intl), you can expect to pay $83 for that flight.

What does STL to LAS mean?

Lambert-St Louis Airport is STL and Las Vegas Harry Reid Intl Airport is LAS. These codes are created by the International Air Transport Association (IATA) and airlines use them to identify the departing and arrival airports in the flight routes they service.

Alternative routes for St. Louis to Las Vegas

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

Top 5 airlines flying from St. Louis to Las Vegas

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.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$77Average$185FlexibilityNo cancel feeOn-time65%
Search Spirit Airlines flights
FrontierCheapest$94Average$194FlexibilityNo cancel feeOn-time62%
Search Frontier flights
United AirlinesCheapest$180Average$416FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
DeltaCheapest$267Average$426FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
American AirlinesCheapest$275Average$470FlexibilityNo cancel feeOn-time71%
Search American Airlines flights

Hourly flight availability from St. Louis to Las Vegas

See what time of day planes typically take off from St. Louis to Las Vegas
10%of flight departuresEarly morningMidnight to 6 am
67%of flight departuresMorning6 am to noon
18%of flight departuresAfternoonNoon to 6 pm
5%of flight departuresEvening6 pm to midnight
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
Sunday8daily flights
Monday9daily flights
Tuesday7daily flights
Wednesday7daily flights
Thursday8daily flights
Friday8daily flights
Saturday7daily flights

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Why should you use Cheapflights to find cheap flight tickets from St. Louis to Las Vegas?

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Users can book flights with no change fees policies with our dedicated filters. Book flights from St. Louis to Las Vegas flexibly with Cheapflights today.

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Yes! Start tracking prices for St. Louis to Las Vegas flights today and get alerted whenever prices for these flights change. To access this feature, navigate to the search form above to perform a search, which will then prompt you for a valid email address to use the tool.

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