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$79+ Cheap flights from St. Louis to Las Vegas (STL - LAS)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/16. Fares are subject to change and may not be available on all flights or dates of travel.
STL — LAS
May 27 — Jun 31
Wed 5/27
Wed 6/3
1 adult, Economy
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Find cheap flights from St. Louis to Las Vegas with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

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3. Compare prices and book

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Cheapflights Tip: The best prices from Lambert-St Louis to Las Vegas Harry Reid Intl are usually found in January or October, booked 37 days in advance, depart on a Monday or Sunday and return on a Friday

Cheap flight deals from St. Louis to Las Vegas

Cheapest flights from St. Louis to Las Vegas
Explore the most affordable flight options available from St. Louis to Las Vegas. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 27, 2026.

This Travelocity deal was found by Cheapflights users on 4/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/117:03 pm
STL
-
LAS
Nonstop3h 33m
Frontier
Fri 8/212:10 pm
LAS
-
STL
Nonstop3h 26m
Frontier
Deal found 4/22$198
This Cheapflightsfares deal was found by Cheapflights users on 4/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/97:08 pm
STL
-
LAS
1 stop6h 46m
Frontier
Tue 5/126:45 am
LAS
-
STL
1 stop8h 48m
Frontier
Deal found 4/25$199
This Kiwi.com deal was found by Cheapflights users on 4/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/185:27 pm
STL
-
LAS
1 stop21h 26m
Frontier
Sat 5/236:00 am
LAS
-
STL
1 stop11h 31m
Frontier
Deal found 4/26$202
This Cheapflightsfares deal was found by Cheapflights users on 4/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/189:18 pm
STL
-
LAS
Nonstop3h 36m
Frontier
Sat 5/2312:29 am
LAS
-
STL
1 stop16h 54m
Frontier
Deal found 4/22$203
This Frontier deal was found by Cheapflights users on 4/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/167:08 pm
STL
-
LAS
1 stop6h 46m
Frontier
Wed 5/2012:39 pm
LAS
-
STL
Nonstop3h 27m
Frontier
Deal found 4/25$204
This Kiwi.com deal was found by Cheapflights users on 4/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/189:18 pm
STL
-
LAS
Nonstop3h 36m
Frontier
Wed 5/276:30 am
LAS
-
STL
1 stop10h 53m
Frontier
Deal found 4/22$205
This Cheapflightsfares deal was found by Cheapflights users on 4/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/244:19 pm
STL
-
LAS
1 stop30h 28m
Frontier
Wed 5/2712:39 pm
LAS
-
STL
Nonstop3h 27m
Frontier
Deal found 4/23$206
This Cheapflightsfares deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/237:46 pm
STL
-
LAS
Nonstop3h 34m
Frontier
Fri 6/2612:59 am
LAS
-
STL
1 stop16h 24m
Frontier
Deal found 4/27$207
This Expedia deal was found by Cheapflights users on 4/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/278:08 pm
STL
-
LAS
1 stop5h 21m
Frontier
Tue 6/301:23 pm
LAS
-
STL
Nonstop3h 28m
Frontier
Deal found 4/25$208
This Cheapflightsfares deal was found by Cheapflights users on 4/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/298:08 pm
STL
-
LAS
1 stop19h 36m
Frontier
Tue 6/212:29 am
LAS
-
STL
1 stop16h 54m
Frontier
Deal found 4/23$209
This Cheapflightsfares deal was found by Cheapflights users on 4/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/103:33 pm
STL
-
LAS
1 stop10h 21m
Frontier
Wed 5/1312:39 pm
LAS
-
STL
Nonstop3h 27m
Frontier
Deal found 4/23$211

Find flight deals from St. Louis to Las Vegas

Discover tips and strategies to find the most affordable flight options for your journey from St. Louis (STL) to Las Vegas (LAS). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated April 27, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$198
(Frontier)

One-way from

$79
(Kiwi.com)

Popular in

June

Cheapest in

January

Average price

$348

Good round-trip deal

$270 or less

Good one-way deal

$131 or less
Provider with most accurate pricing for Lambert-St Louis-Las Vegas Harry Reid Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Lambert-St Louis-Las Vegas Harry Reid Intl flights.
Search Deals
From Lambert-St Louis to Las Vegas Harry Reid Intl
Search Deals
One-way flight from Lambert-St Louis to Las Vegas Harry Reid Intl
Search Deals
Highest demand for flights based on searches. 9% potential increase in price ($29 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($5 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 2026
Search Deals
Price to beat on a round-trip flight from Lambert-St Louis to Las Vegas Harry Reid Intl.
Search Deals
Price to beat on a one-way flight from Lambert-St Louis to Las Vegas Harry Reid Intl.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from St. Louis to Las Vegas that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated April 27, 2026.
Use the filters below to find and compare flights from St. Louis to Las Vegas that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

Tue 5/19

8:46 am-2:41 pm

1 stop7h 55m

Las Vegas Harry Reid Intl

Wed 5/20

5:15 am-1:13 pm

1 stop5h 58m

$379

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

Sat 5/23

1:13 pm-11:57 pm

2 stops12h 44m

Las Vegas Harry Reid Intl

Wed 5/27

6:00 am-9:10 pm

2 stops13h 10m

$389

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

Mon 5/25

7:22 am-2:46 pm

1 stop9h 24m

Las Vegas Harry Reid Intl

Wed 5/27

10:45 am-9:21 pm

2 stops8h 36m

$407

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

Sun 7/12

6:35 pm-10:40 pm

1 stop6h 05m

Las Vegas Harry Reid Intl

Wed 7/15

11:50 am-6:25 pm

1 stop4h 35m

$498

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

Wed 5/20

2:35 pm-7:07 pm

1 stop6h 32m

Las Vegas Harry Reid Intl

Wed 5/27

10:45 am-9:21 pm

2 stops8h 36m

$512

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

Wed 6/3

2:27 pm-10:51 pm

2 stops10h 24m

Las Vegas Harry Reid Intl

Sun 6/7

6:19 am-4:52 pm

1 stop8h 33m

$526

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

Fri 5/29

2:27 pm-10:58 pm

2 stops10h 31m

Las Vegas Harry Reid Intl

Thu 6/4

6:04 am-7:03 pm

2 stops10h 59m

$560
Quickest round-trip

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

Sun 5/24

6:30 am-8:00 am

Nonstop3h 30m

Las Vegas Harry Reid Intl

Sun 5/31

8:45 pm-1:55 am

Nonstop3h 10m

$567

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

Fri 6/12

4:48 pm-12:21 am

2 stops9h 33m

Las Vegas Harry Reid Intl

Wed 6/17

6:00 am-11:35 pm

2 stops15h 35m

$572

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

Fri 5/8

5:28 pm-10:04 pm

1 stop6h 36m

Las Vegas Harry Reid Intl

Tue 5/12

10:46 am-9:13 pm

2 stops8h 27m

$614

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/26

Showing 1-10 of 18 resultsSorted by cheapest first
1
2

Compare providers for flights from St. Louis to Las Vegas

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from St. Louis to Las Vegas in April.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
JustAirTicketPrice Accuracy-Trust Score*1 star
CheapflightsfaresPrice Accuracy2 starsTrust Score*2 stars
PricelinePrice Accuracy1 starTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
Super.comPrice Accuracy-Trust Score*3 stars
CheapOairPrice Accuracy3 starsTrust Score*3 stars
MytripPrice Accuracy2 starsTrust Score*3 stars
CheapfaremartPrice Accuracy-Trust Score*1 star

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on St. Louis-Las Vegas flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on St. Louis-Las Vegas flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from St. Louis-Las Vegas flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on St. Louis-Las Vegas flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for St. Louis-Las Vegas flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from St. Louis to Las Vegas

Have a flexible travel schedule? Discover the best time to fly to Las Vegas from St. Louis with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from St. Louis to Las Vegas

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

Booking 36 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.

What is the cheapest month to book a flight from St. Louis to Las Vegas?

Currently, January is the cheapest month in which you can book a flight from St. Louis to Las Vegas (average of $253). Flying from St. Louis to Las Vegas in June is currently the most expensive (average of $349). 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.

What is the cheapest time of day to fly from STL to LAS?

Find hourly flight availability from St. Louis to Las Vegas. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated April 27, 2026.

It’s typically best to fly out from St. Louis to Las Vegas in the evening. Doing so could potentially save you 47% on the flight price compared to flying in the morning, which is usually more expensive.

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

Use this chart to determine the cheapest time to fly round-trip from St. Louis to Las Vegas. Price data was last updated on April 25, 2026.

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. Thursday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

How much does it cost to fly round-trip from St. Louis to Las Vegas?

The best insider tips for St. Louis to Las Vegas flights

AI-powered summary based on content written by travel experts. AI can make mistakes.
Cheapflights partnered with top experts to bring you the best recommendations for your St. Louis to Las Vegas trip
Our travel experts
Taryn White

Taryn White

Expert on STL

Taryn White is a freelance travel writer, digital creator, and travel advisor who has visited nearly 100 countries and all 50 states. She’s familiar with many airports and enjoys beach hopping, boutique hotels, spa experiences, and exploring local culture. Her work has appeared in Travel + Leisure, Condé Nast Traveler, National Geographic, Smithsonian Magazine, AFAR, and more.

Read more
Ramsey Qubein

Ramsey Qubein

Expert on LAS

An avid traveler and aviation expert who has visited 173 countries, all 50 states and seven continents, Ramsey Qubein flies nearly 400,000 miles a year. As a North Carolina-based freelance journalist for publications including Conde Nast Traveler, Forbes, USA Today and Bloomberg among others, he explores the latest trends in aviation, hospitality, cruises and business.

Read more

Reviews of airlines servicing Las Vegas

Get insights into the airlines that provide service to Las Vegas. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Las Vegas. Reviews last updated April 27, 2026.
See what other customers who have flown with Southwest,Delta, andUnited Airlines from St. Louis to Las Vegas have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,324 reviews

Entertainment

7.5

Overall

8.0

Comfort

8.0

Crew

8.6

Food

7.0

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
Southwest
8.0
Very good
4,324 reviews
Southwest
8.0
Very good
4,324 reviews

Entertainment

7.5

Overall

8.0

Comfort

8.0

Crew

8.6

Food

7.0

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
Delta
7.9
Good
8,463 reviews
Southwest
8.0
Very good
4,324 reviews

Entertainment

7.5

Overall

8.0

Comfort

8.0

Crew

8.6

Food

7.0

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
United Airlines
7.4
Good
9,665 reviews
Southwest
8.0
Very good
4,324 reviews

Entertainment

7.5

Overall

8.0

Comfort

8.0

Crew

8.6

Food

7.0

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
American Airlines
7.1
Good
11,668 reviews
Southwest
8.0
Very good
4,324 reviews

Entertainment

7.5

Overall

8.0

Comfort

8.0

Crew

8.6

Food

7.0

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
Frontier
5.6
Fair
2,974 reviews
Southwest
8.0
Very good
4,324 reviews

Entertainment

7.5

Overall

8.0

Comfort

8.0

Crew

8.6

Food

7.0

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.

St. Louis to Las Vegas Travel Guide

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.

Related info for your journey

Find useful and relevant information for your journey from St. Louis to Las Vegas. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • 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.

  • 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 25m for a nonstop flight. There are 4 flights from Lambert-St Louis to Las Vegas per day from 8 airlines.

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

    Within the past month, 110 users have taken a look at flights from Lambert-St Louis to Las Vegas Harry Reid Intl.

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

    United Airlines and Southwest can get you from St. Louis to Las Vegas in just under 6h 05m. Your travel time can differ by up to 1h 50m. There are 1367 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 $100. Other airlines that can offer you cheap pricing are Frontier, from $111, and Delta, from $121. Spirit Airlines is priced at 66% lower than the current average price of a flight leaving 3 months from now.

  • What are the cheapest airlines to fly from St. Louis to Las Vegas one-way?

    The cheapest airlines for a one-way flight from St. Louis to Las Vegas are Frontier ($53), United Airlines ($116), and Delta ($116).

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

    Consider Volaris (94%), Frontier (82%) or Southwest (72%) 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 $283, our data shows the cheapest flight currently is $86. When looking at the most popular route, (Lambert-St Louis - Las Vegas Harry Reid Intl), you can expect to pay $218 for that flight.

  • Can I find deals for flights from St. Louis to Las Vegas that include hotel bookings?

    Yes. In addition to deals on St. Louis to Las Vegas flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from St. Louis to Las Vegas?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from St. Louis to Las Vegas.

  • Can I find deals for business class flights from St. Louis to Las Vegas?

    Yes. Cheapflights offers flight deals from St. Louis to Las Vegas by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from St. Louis to Las Vegas?

    Currently, January is the cheapest month in which you can book a flight from St. Louis to Las Vegas (average of $253). Flying from St. Louis to Las Vegas in June is currently the most expensive (average of $349). 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.

See more FAQs

Traveling to a place near Las Vegas?

Book flights to Las Vegas if you plan to visit one of these locations
Paradise
Mesquite
North Las Vegas
Henderson
Kingman
Winchester
Boulder City
Needles
Sunrise Manor

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Top 8 airlines flying from St. Louis to Las Vegas

Discover the top 8 airlines that operate flights from St. Louis to Las Vegas. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated April 27, 2026.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$100Average$209FlexibilityNo cancel feeOn-time65%
FrontierCheapest$111Average$253FlexibilityNo cancel feeOn-time62%
DeltaCheapest$121Average$276FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$157Average$363FlexibilityNo cancel feeOn-time75%
JetBlueCheapest$206Average$424FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$224Average$397FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$228Average$343FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$263Average$479FlexibilityNo cancel feeOn-time63%

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