Las Vegas

$80+ 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 6/2. Fares are subject to change and may not be available on all flights or dates of travel.
STL — LAS
Apr 30 — May 71
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1. Tell us where you want to go

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2. Select your favorite providers

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Cheapflights Tip: The best prices from Lambert-St Louis to Las Vegas Harry Reid Intl are usually found in August or September, booked 89 days in advance, depart on a Monday or Sunday and return on a Friday

Cheap 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 25, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$150
(Frontier)

One-way from

$80
(Cheapflightsfares)

Popular in

March

Cheapest in

August

Average price

$278

Good round-trip deal

$245 or less

Good one-way deal

$130 or less
Provider with most accurate pricing for Lambert-St Louis-Las Vegas Harry Reid Intl flight deals.
Provider most trusted by Cheapflights users for Lambert-St Louis-Las Vegas Harry Reid Intl flights.
From Lambert-St Louis to Las Vegas Harry Reid Intl
One-way flight from Lambert-St Louis to Las Vegas Harry Reid Intl
Highest demand for flights based on searches. 7% potential increase in price ($20 potential increase over avg. RT price).
Cheapest flight prices on average. 2% potential price decrease ($8 potential savings vs. average RT price).
Average for round-trip flights in April 2025
Price to beat on a round-trip flight from Lambert-St Louis to Las Vegas Harry Reid Intl.
Price to beat on a one-way flight from Lambert-St Louis to Las Vegas Harry Reid Intl.

Find 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 25, 2025.

This Frontier deal was found by Cheapflights users on 4/24. 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.
Mon 5/59:55 pmSTL - LAS
Nonstop3h 46mFrontier
Mon 5/123:39 pmLAS - STL
Nonstop3h 26mFrontier
Deal found 4/24$150
This FlightHub 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/59:55 pmSTL - LAS
Nonstop3h 46mMultiple Airlines
Fri 5/99:24 pmLAS - STL
1 stop9h 51mMultiple Airlines
Deal found 4/23$154
This Cheapflightsfares deal was found by Cheapflights users on 4/24. 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.
Thu 7/178:44 amSTL - LAS
1 stop13h 22mSpirit Airlines
Sat 7/1910:55 pmLAS - STL
1 stop6h 54mSpirit Airlines
Deal found 4/24$259
This American Airlines deal was found by Cheapflights users on 4/24. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/187:19 pmSTL - LAS
1 stop5h 36mAmerican Airlines
Wed 5/2112:59 amLAS - STL
1 stop6h 55mAmerican Airlines
Deal found 4/24$291

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 25, 2025.
Use the filters below to find and compare flights from St. Louis to Las Vegas that are best for you.

Fly from

St. Louis

Fly to

Las Vegas

Route

Depart

Return

Price

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

Mon 5/5

9:55 pm-11:41 pm

Nonstop3h 46m

Las Vegas Harry Reid Intl

Mon 5/12

3:39 pm-9:05 pm

Nonstop3h 26m

$150

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

Mon 5/5

9:55 pm-11:41 pm

Nonstop3h 46m

Las Vegas Harry Reid Intl

Fri 5/9

9:24 pm-9:15 am

1 stop9h 51m

$154

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

Thu 7/17

8:44 am-8:06 pm

1 stop13h 22m

Las Vegas Harry Reid Intl

Sat 7/19

5:28 pm-7:49 am

1 stop12h 21m

$259

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

Sun 5/18

7:19 pm-10:55 pm

1 stop5h 36m

Las Vegas Harry Reid Intl

Mon 5/19

12:59 am-8:59 am

1 stop6h 00m

$291

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

Mon 6/2

2:27 pm-4:05 pm

Nonstop3h 38m

$80

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

Sat 5/17

10:10 am-10:54 pm

1 stop14h 44m

$95

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

Sun 5/25

10:20 am-5:46 pm

1 stop9h 26m

$123

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

Wed 5/21

6:05 pm-11:02 pm

1 stop6h 57m

$146

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

Sun 5/25

10:10 am-11:36 pm

2 stops15h 26m

$149

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

Tue 6/3

8:55 pm-10:25 pm

Nonstop3h 30m

$169

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/25

Showing 1-10 of 13 results
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*2 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
CheapflightsfaresPrice Accuracy3 starsTrust Score*2 stars
PricelinePrice Accuracy1 starTrust Score*3 stars
Kiwi.comPrice Accuracy3 starsTrust Score*3 stars
FlightnetworkPrice Accuracy-Trust Score*3 stars
CheapOairPrice Accuracy1 starTrust Score*3 stars
CheapfaremartPrice Accuracy-Trust Score*1 star
Trip.comPrice Accuracy1 starTrust Score*3 stars

*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 eDreams the most. eDreams 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.

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

Snippets provided in this section are AI-generated based on a summarization of Cheapflights-commissioned articles. The articles are presented as-is, for general informational purposes only, and may not be up-to-date. The opinions contained in the articles are original to the author and reflect their authentic experience, which may vary significantly from the experience of others.
Cheapflights partnered with top experts to bring you the best recommendations for your St. Louis to Las Vegas trip
Airports
STL

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

Read more about STLby Taryn White
LAS

For a cheaper ride to the city, use rideshare services from the parking garage. Request your ride closer to the pickup spot.

Read more about LASby Ramsey Qubein
Our travel experts
Taryn White

Taryn White

Expert on STL

Taryn White

Taryn White

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

Ramsey Qubein

Ramsey Qubein

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

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?

Use this chart to determine the optimal time to book a round-trip flight from St. Louis to Las Vegas. Price data was last updated on April 18, 2025.

Booking 89 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, August is the cheapest month in which you can book a flight from St. Louis to Las Vegas (average of $198). Flying from St. Louis to Las Vegas in March is currently the most expensive (average of $269). 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 25, 2025.

It’s typically best to fly out from St. Louis to Las Vegas in the evening. Doing so could potentially save you 51% 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 March 30, 2025.

Travelers seeking maximum savings on their St. Louis to Las Vegas flight should consider departing on Sunday 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.

Rainfall in Las Vegas by month

Plan your trip to Las Vegas by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Las Vegas ranges from 0.1 - 0.8 inches per month. February is typically the wettest month, when rainfall can reach 0.8 in. May is typically the driest time to visit Las Vegas when rainfall is around 0.1 in.

Temperature in Las Vegas by month

Plan your trip to Las Vegas by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Las Vegas, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 93.2 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 48.2 F).

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 25, 2025.
To help decide which airline to fly from St. Louis to Las Vegas, see what other customers have to say about Alaska Airlines, Southwest and Delta. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Comfort

7.9

Boarding

8.2

Crew

8.5

Overall

8.0

Entertainment

7.1

Food

7.1

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >

Comfort

7.9

Boarding

8.2

Crew

8.5

Overall

8.0

Entertainment

7.1

Food

7.1

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >

Comfort

7.9

Boarding

8.2

Crew

8.5

Overall

8.0

Entertainment

7.1

Food

7.1

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
8.0
Very good

Comfort

7.9

Boarding

8.2

Crew

8.5

Overall

8.0

Entertainment

7.1

Food

7.1

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >

Comfort

7.9

Boarding

8.2

Crew

8.5

Overall

8.0

Entertainment

7.1

Food

7.1

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >

Comfort

7.9

Boarding

8.2

Crew

8.5

Overall

8.0

Entertainment

7.1

Food

7.1

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >

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 6 flights from Lambert-St Louis to Las Vegas per day from 8 airlines.

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

  • 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 $150. Other airlines that can offer you cheap pricing are Spirit Airlines, from $259, and American Airlines, from $291. Frontier is priced at 42% 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 ($80), Spirit Airlines ($95), and Sun Country Air ($123).

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

    While on average a flight from St. Louis to Las Vegas is generally $251, our data shows the cheapest flight currently is $59. When looking at the most popular route, (Lambert-St Louis - Las Vegas Harry Reid Intl), you can expect to pay $151 for that flight.

  • Where are the most common layover locations when flying from St. Louis to Las Vegas?

  • What are some popular things to do or see while on a layover in Denver?

    Most Denver visitors opt to spend their time experiencing Coors Field, Paramount Theatre, and 16th Street Mall. Coors Field, Paramount Theatre and 16th Street Mall are located about 18.4 mi, 18.6 mi, and 18.7 mi, respectively from Denver Intl if you are interested in checking them out. Travelers can book a car rental at Denver Intl for about $42 per day to make their sightseeing more efficient.

  • Where are the least popular layover locations for St. Louis to Las Vegas flights?

  • 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, August is the cheapest month in which you can book a flight from St. Louis to Las Vegas (average of $198). Flying from St. Louis to Las Vegas in March is currently the most expensive (average of $269). 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 St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
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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 25, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$76Average$181FlexibilityNo cancel feeOn-time65%
FrontierCheapest$79Average$215FlexibilityNo cancel feeOn-time62%
Allegiant AirCheapest$104Average$238FlexibilityNo cancel feeOn-time88%
American AirlinesCheapest$217Average$395FlexibilityNo cancel feeOn-time71%
DeltaCheapest$258Average$435FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$258Average$430FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$288Average$475FlexibilityNo cancel feeOn-time63%
Alaska AirlinesCheapest$371Average$465FlexibilityNo cancel feeOn-time75%

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