HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
St. Louis

$64+ Cheap flights from Las Vegas to St. Louis (LAS - STL)

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 1/31. Fares are subject to change and may not be available on all flights or dates of travel.
LAS — STL
Jan 14 — Jan 211
Wed 1/14
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Las Vegas to St. Louis 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

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheapflights Tip: The best prices from Las Vegas Harry Reid Intl to Lambert-St Louis are usually found in October or February, booked 21 days in advance, depart on a Friday or Thursday and return on a Monday

Cheap flight deals from Las Vegas to St. Louis

Cheapest flights from Las Vegas to St. Louis
Explore the most affordable flight options available from Las Vegas to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 15, 2025.

This CheapOair deal was found by Cheapflights users on 12/13. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/296:30 amLAS - STL
1 stop11h 37mFrontier
Tue 1/65:11 pmSTL - LAS
1 stop18h 32mFrontier
Deal found 12/13$184
This CheapOair deal was found by Cheapflights users on 12/14. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/306:00 amLAS - STL
1 stop26h 02mFrontier
Mon 1/510:10 pmSTL - LAS
Nonstop3h 52mFrontier
Deal found 12/14$205
This Frontier deal was found by Cheapflights users on 12/15. 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.
Sun 12/284:05 pmLAS - STL
Nonstop3h 20mFrontier
Mon 1/510:10 pmSTL - LAS
Nonstop3h 52mFrontier
Deal found 12/15$226
This Super.com deal was found by Cheapflights users on 12/13. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/3012:59 amLAS - STL
1 stop7h 03mFrontier
Sun 1/410:10 pmSTL - LAS
Nonstop3h 52mFrontier
Deal found 12/13$229
This Frontier deal was found by Cheapflights users on 12/13. 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 12/204:05 pmLAS - STL
Nonstop3h 20mFrontier
Thu 1/110:42 amSTL - LAS
1 stop13h 10mFrontier
Deal found 12/13$236
This Super.com deal was found by Cheapflights users on 12/13. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/1812:59 amLAS - STL
1 stop7h 03mFrontier
Tue 1/65:11 pmSTL - LAS
1 stop18h 32mFrontier
Deal found 12/13$238
This Kiwi.com deal was found by Cheapflights users on 12/13. 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.
Wed 12/2410:31 pmLAS - STL
1 stop9h 09mFrontier
Wed 12/315:19 pmSTL - LAS
Nonstop3h 49mFrontier
Deal found 12/13$248
This Frontier deal was found by Cheapflights users on 12/12. 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 12/226:30 amLAS - STL
1 stop11h 37mFrontier
Sat 1/310:10 pmSTL - LAS
Nonstop3h 52mFrontier
Deal found 12/12$252
This CheapOair deal was found by Cheapflights users on 12/14. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/1710:20 pmLAS - STL
1 stop22h 13mFrontier
Tue 1/65:11 pmSTL - LAS
1 stop18h 32mFrontier
Deal found 12/14$255
This Frontier deal was found by Cheapflights users on 12/14. 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.
Fri 12/264:05 pmLAS - STL
Nonstop3h 20mFrontier
Fri 1/28:42 pmSTL - LAS
1 stop11h 37mFrontier
Deal found 12/14$256

Find flight deals from Las Vegas to St. Louis

Discover tips and strategies to find the most affordable flight options for your journey from Las Vegas (LAS) to St. Louis (STL). 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 December 15, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$79
(Super.com)

One-way from

$64
(Expedia)

Popular in

June

Cheapest in

October

Average price

$232

Good round-trip deal

$148 or less

Good one-way deal

$75 or less
Provider with most accurate pricing for Las Vegas Harry Reid Intl-Lambert-St Louis flight deals.
Search Deals
Provider most trusted by Cheapflights users for Las Vegas Harry Reid Intl-Lambert-St Louis flights.
Search Deals
From Las Vegas Harry Reid Intl to Lambert-St Louis
Search Deals
One-way flight from Las Vegas Harry Reid Intl to Lambert-St Louis
Search Deals
Highest demand for flights based on searches. 12% potential increase in price ($31 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($6 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals
Price to beat on a round-trip flight from Las Vegas Harry Reid Intl to Lambert-St Louis.
Search Deals
Price to beat on a one-way flight from Las Vegas Harry Reid Intl to Lambert-St Louis.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Las Vegas to St. Louis 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 December 15, 2025.
Use the filters below to find and compare flights from Las Vegas to St. Louis that are best for you.

Fly from

Las Vegas

Fly to

St. Louis

Route

Depart

Return

Price

Las VegasSt. Louis

LAS - STL

LASSTL

Las Vegas Harry Reid Intl

Fri 2/6

3:32 pm-8:48 pm

Nonstop3h 16m

Lambert-St Louis

Mon 2/9

9:45 pm-11:44 pm

Nonstop3h 59m

$80

Las VegasSt. Louis

LAS - STL

LASSTL

Las Vegas Harry Reid Intl

Thu 1/15

1:25 pm-7:54 am

2 stops16h 29m

Lambert-St Louis

Sun 1/18

10:09 pm-11:57 pm

Nonstop3h 48m

$132

Las VegasSt. Louis

LAS - STL

LASSTL

Las Vegas Harry Reid Intl

Tue 1/6

10:20 pm-10:33 pm

1 stop22h 13m

Lambert-St Louis

Sun 1/11

12:37 pm-2:25 pm

Nonstop3h 48m

$132

Las VegasSt. Louis

LAS - STL

LASSTL

Las Vegas Harry Reid Intl

Fri 3/6

6:05 am-11:19 am

Nonstop3h 14m

Lambert-St Louis

Mon 3/9

2:09 pm-10:48 pm

1 stop10h 39m

$153

Las VegasSt. Louis

LAS - STL

LASSTL

Las Vegas Harry Reid Intl

Wed 1/21

7:30 am-2:46 pm

1 stop5h 16m

Lambert-St Louis

Sat 1/24

3:46 pm-9:49 am

2 stops20h 03m

$169

Las VegasSt. Louis

LAS - STL

LASSTL

Las Vegas Harry Reid Intl

Tue 1/6

3:33 pm-10:02 am

1 stop16h 29m

Lambert-St Louis

Tue 2/3

2:50 pm-9:00 pm

1 stop8h 10m

$225

Las VegasSt. Louis

LAS - STL

LASSTL

Las Vegas Harry Reid Intl

Sun 12/28

4:05 pm-9:25 pm

Nonstop3h 20m

Lambert-St Louis

Mon 1/5

10:10 pm-12:02 am

Nonstop3h 52m

$226

Las VegasSt. Louis

LAS - STL

LASSTL

Las Vegas Harry Reid Intl

Tue 2/24

11:55 pm-9:43 am

1 stop7h 48m

Lambert-St Louis

Sun 3/1

2:26 pm-7:28 pm

1 stop7h 02m

$235

Las VegasSt. Louis

LAS - STL

LASSTL

Las Vegas Harry Reid Intl

Tue 2/10

12:59 am-3:53 pm

1 stop12h 54m

$68

Las VegasSt. Louis

LAS - STL

LASSTL

Las Vegas Harry Reid Intl

Fri 1/9

8:16 pm-10:02 am

1 stop11h 46m

$85

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/14

Showing 1-10 of 20 results
1
2

Compare providers for flights from Las Vegas to St. Louis

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 Las Vegas to St. Louis in December.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars
PricelinePrice Accuracy1 starTrust Score*3 stars
CheapflightsfaresPrice Accuracy3 starsTrust Score*2 stars
JustAirTicketPrice Accuracy-Trust Score*1 star
Trip.comPrice 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 Las Vegas-St. Louis flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Las Vegas-St. Louis flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Las Vegas-St. Louis flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Las Vegas-St. Louis 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 Las Vegas-St. Louis 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 Las Vegas to St. Louis

Have a flexible travel schedule? Discover the best time to fly to St. Louis from Las Vegas 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 Las Vegas to St. Louis

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

Use this chart to determine the optimal time to book a round-trip flight from Las Vegas to St. Louis. Price data was last updated on December 12, 2025.

To ensure you get the cheapest price possible for a flight from Las Vegas to St. Louis, you should look to book at least 21 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

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

Currently, October is the cheapest month in which you can book a flight from Las Vegas to St. Louis (average of $77). Flying from Las Vegas to St. Louis in July is currently the most expensive (average of $192). 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 LAS to STL?

Find hourly flight availability from Las Vegas to St. Louis. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 15, 2025.

One of the essential ways to save on airfare from Las Vegas to St. Louis is to remain as flexible as possible. Flights that are in the evening tend to be the most expensive. A flight in the afternoon could potentially save you up to 58% on airfare.

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

Use this chart to determine the cheapest time to fly round-trip from Las Vegas to St. Louis. Price data was last updated on December 13, 2025.

Travelers seeking maximum savings on their Las Vegas to St. Louis flight should consider departing on Friday afternoons when fares are most often at their lowest. Sunday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

The best insider tips for Las Vegas to St. Louis 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 Las Vegas to St. Louis trip
Airports
LAS

Experience self-service TSA screening at LAS, simplifying security with video instructions for a quicker departure process.

Read more about LASBy Ramsey Qubein
STL

Use the MetroLink light rail from STL for a convenient, economical ride to downtown St. Louis in about 40 minutes.

Read more about STLBy Taryn White
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

Reviews of airlines servicing St. Louis

Get insights into the airlines that provide service to St. Louis. 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 St. Louis. Reviews last updated December 15, 2025.
See what other customers who have flown with Southwest, Delta, and United Airlines from Las Vegas to St. Louis have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
7.9
Good
4,250 reviews

Food

7.0

Overall

7.9

Comfort

8.0

Entertainment

7.5

Crew

8.6

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
Southwest
7.9
Good
4,250 reviews
Southwest
7.9
Good
4,250 reviews

Food

7.0

Overall

7.9

Comfort

8.0

Entertainment

7.5

Crew

8.6

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
Delta
7.9
Good
8,008 reviews
Southwest
7.9
Good
4,250 reviews

Food

7.0

Overall

7.9

Comfort

8.0

Entertainment

7.5

Crew

8.6

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
United Airlines
7.4
Good
9,092 reviews
Southwest
7.9
Good
4,250 reviews

Food

7.0

Overall

7.9

Comfort

8.0

Entertainment

7.5

Crew

8.6

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
American Airlines
7.2
Good
11,052 reviews
Southwest
7.9
Good
4,250 reviews

Food

7.0

Overall

7.9

Comfort

8.0

Entertainment

7.5

Crew

8.6

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
Frontier
5.8
Fair
3,080 reviews
Southwest
7.9
Good
4,250 reviews

Food

7.0

Overall

7.9

Comfort

8.0

Entertainment

7.5

Crew

8.6

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am

Related info for your journey

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

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

    Booking a flight from Las Vegas Harry Reid Intl (LAS) to Lambert-St Louis (STL) is your only option if you wish to fly from Las Vegas to St. Louis. On a typical day, there are 7 flights from Harry Reid Intl to Lambert-St Louis, all of which are around 3h 05m for a nonstop flight. You can also purchase a plane ticket from 4 airlines when you book a flight from Harry Reid Intl to St. Louis.

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

    Within the past month, 23 users have taken a look at flights from Las Vegas Harry Reid Intl to Lambert-St Louis.

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

    A quick flight from Las Vegas to St. Louis can take about 3h 16m. Frontier provides one of the quickest options available for as low as $80. Airlines will cover a distance of 1367 mi. All flights are typically nonstop.

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

    Flying on Frontier is currently your cheapest option to St. Louis, with prices starting at $96. Additional round-trip tickets that might be worth considering are offered by Delta and American Airlines, with the lowest prices starting at $126 and $144, respectively. Frontier is priced at 58% lower than the current average price of a flight leaving 3 months from now.

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

    One-way options have recently been found by users for as low as $56 on Frontier. Other airlines that offer cheap prices include Spirit Airlines from $102 and Delta from $109 one-way.

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

    The cheapest flight price from Las Vegas to St. Louis is $53. On average you can expect to pay $202. The most popular route, (Las Vegas Harry Reid Intl - Lambert-St Louis), can usually be booked for $148.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Las Vegas to St. Louis 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 Las Vegas to St. Louis?

    Currently, October is the cheapest month in which you can book a flight from Las Vegas to St. Louis (average of $77). Flying from Las Vegas to St. Louis in July is currently the most expensive (average of $192). 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
Edwardsville
O'Fallon
Fairview Heights
Maryland Heights
Collinsville
Swansea
Eureka
Glencoe
St. Peters
Chesterfield
Alton
Farmington
Festus

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 4 airlines flying from Las Vegas to St. Louis

Discover the top 4 airlines that operate flights from Las Vegas to St. Louis. 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 December 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$97Average$201FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$144Average$356FlexibilityNo cancel feeOn-time71%
DeltaCheapest$224Average$356FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$271Average$401FlexibilityNo cancel feeOn-time63%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.
Site
©2025 Cheapflights