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

Within the past month, 17 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 19m. Frontier provides one of the quickest options available for as low as $103. 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 $90. Additional round-trip tickets that might be worth considering are offered by American Airlines and Delta, with the lowest prices starting at $144 and $258, respectively. Frontier is priced at 65% lower than the current average price of a flight leaving 3 months from now.

In terms of precipitation, rainfall in St. Louis ranges from 2.2 - 4.7 inches per month. May is typically the wettest month, when rainfall can reach 4.7 in. February is typically the driest time to visit St. Louis when rainfall is around 2.2 in.

If weather is an important factor for your trip to St. Louis, 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 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 32.0 F).

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

The cheapest flight price from Las Vegas to St. Louis is $86. On average you can expect to pay $212. The most popular route, (Las Vegas Harry Reid Intl - Lambert-St Louis), can usually be booked for $112.

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

Before booking your flight from Las Vegas to St. Louis check out the most popular airlines for this route: American Airlines, Delta or Frontier.

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

Leaving on a Thursday is a viable option for saving on travel. Heavily demanded days of the week can typically drive up the prices you see. Booking your travel for a less competitive day can save up to 89% on the overall cost on flights from Las Vegas to St. Louis.

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

To save up to 217% on this flight, we recommend booking at least 25 days prior to travel. The price may fluctuate and will likely increase closer to your departure date. Users on Cheapflights have found tickets from Las Vegas to St. Louis from $142 1-2 weeks out and tickets from $294 for flights departing within the next 72 hours.

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

February can be a great time to fly to St. Louis from Las Vegas with a flight ticket averaging about $258. Cheapflights users have found deals in the month of February for as cheap as $94. The most expensive prices can be found in the month of December.

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 6 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 5 airlines when you book a flight from Harry Reid Intl to St. Louis.

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.

$61+ Flights from Las Vegas to St. Louis

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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

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Cheapflights Tip: The best prices from Las Vegas Harry Reid Intl to Lambert-St Louis are usually found in February or September, booked 24 days in advance, depart on a Friday or Thursday and return on a Monday

Cheap flight deals from Las Vegas to St. Louis

Round-trip from	$61 (Kiwi.com)
Popular in	December
Cheapest in	February
Average price	$214
Good round-trip deal	$186 or less
Good one-way deal	$135 or less

From Las Vegas Harry Reid Intl to Lambert-St Louis

Search Deals

Highest demand for flights based on searches. 9% potential increase in price ($27 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 1% potential price decrease ($6 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in September 2025

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Price to beat on a round-trip flight from Las Vegas Harry Reid Intl to Lambert-St Louis.

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Price to beat on a one-way flight from Las Vegas Harry Reid Intl to Lambert-St Louis.

Search Deals

Find 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 September 11, 2025.

Fri 10/38:34 amLAS - STL

Nonstop3h 19mFrontier

Sun 10/52:38 pmSTL - LAS

Nonstop3h 38mFrontier

Deal found 9/10

$61

Thu 10/28:34 amLAS - STL

Nonstop3h 19mFrontier

Sun 10/52:38 pmSTL - LAS

Nonstop3h 38mFrontier

Deal found 9/11

$78

Fri 10/103:38 pmLAS - STL

Nonstop3h 26mFrontier

Sun 10/1210:17 amSTL - LAS

1 stop15h 27mFrontier

Deal found 9/10

$105

Sun 11/99:16 pmLAS - STL

1 stop12h 08mFrontier

Mon 11/109:07 pmSTL - LAS

Nonstop3h 38mFrontier

Deal found 9/10

$112

Wed 10/812:59 amLAS - STL

1 stop6h 08mFrontier

Sun 10/1210:17 amSTL - LAS

1 stop15h 27mFrontier

Deal found 9/10

$125

Tue 9/3012:59 amLAS - STL

1 stop6h 07mFrontier

Sun 10/52:38 pmSTL - LAS

Nonstop3h 38mFrontier

Deal found 9/10

$133

Tue 10/218:05 pmLAS - STL

1 stop11h 02mFrontier

Sat 10/254:51 pmSTL - LAS

Nonstop3h 39mFrontier

Deal found 9/10

$134

Best flights from Las Vegas to St. Louis
Discover carefully curated flight deals from Las Vegas to St. Louis that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 11, 2025.

Thu 10/28:34 amLAS - STL

Nonstop3h 19mFrontier

Sun 10/52:38 pmSTL - LAS

Nonstop3h 38mFrontier

Deal found 9/11

$103

Wed 10/812:59 amLAS - STL

1 stop6h 08mFrontier

Sun 10/1210:17 amSTL - LAS

1 stop15h 27mFrontier

Deal found 9/10

$125

Mon 10/2712:59 amLAS - STL

1 stop6h 08mFrontier

Sat 11/18:40 pmSTL - LAS

1 stop25h 58mFrontier

Deal found 9/11

$141

Wed 10/294:56 pmLAS - STL

1 stop14h 11mFrontier

Sat 11/18:40 pmSTL - LAS

1 stop25h 58mFrontier

Deal found 9/11

$144

Mon 9/2212:59 amLAS - STL

1 stop6h 07mFrontier

Tue 9/307:55 pmSTL - LAS

1 stop5h 38mFrontier

Deal found 9/11

$153

Mon 10/2712:59 amLAS - STL

1 stop6h 08mFrontier

Thu 10/3011:07 amSTL - LAS

1 stop12h 21mFrontier

Deal found 9/11

$154

Sat 11/812:59 amLAS - STL

1 stop6h 08mFrontier

Thu 11/136:22 pmSTL - LAS

1 stop7h 24mFrontier

Deal found 9/11

$162

Last-minute flights from Las Vegas to St. Louis
Discover last-minute flight deals from Las Vegas to St. Louis. Data last updated September 11, 2025 and is based on user searches.

Tue 9/3012:59 amLAS - STL

1 stop6h 07mFrontier

Sun 10/52:38 pmSTL - LAS

Nonstop3h 38mFrontier

Deal found 9/10

$133

Thu 10/28:34 amLAS - STL

Nonstop3h 19mFrontier

Sun 10/52:38 pmSTL - LAS

Nonstop3h 38mFrontier

Deal found 9/11

$78

Fri 10/38:34 amLAS - STL

Nonstop3h 19mFrontier

Sun 10/52:38 pmSTL - LAS

Nonstop3h 38mFrontier

Deal found 9/10

$61

Wed 10/812:59 amLAS - STL

1 stop6h 08mFrontier

Sun 10/1210:17 amSTL - LAS

1 stop15h 27mFrontier

Deal found 9/10

$125

Fri 10/103:38 pmLAS - STL

Nonstop3h 26mFrontier

Sun 10/1210:17 amSTL - LAS

1 stop15h 27mFrontier

Deal found 9/10

$105

Tue 10/218:05 pmLAS - STL

1 stop11h 02mFrontier

Sat 10/254:51 pmSTL - LAS

Nonstop3h 39mFrontier

Deal found 9/10

$134

One-way flights from Las Vegas to St. Louis
Search for one-way flight options from Las Vegas to St. Louis. Find affordable one-way fares based on user searches. Data last updated September 11, 2025.

Wed 10/15:36 pmLAS - STL

2 stops14h 18mMultiple Airlines

Deal found 9/11

$91

Sat 10/1111:54 amLAS - STL

1 stop19h 28mMultiple Airlines

Deal found 9/10

$93

Sat 10/410:41 pmLAS - STL

2 stops9h 13mMultiple Airlines

Deal found 9/10

$96

Sat 9/2710:35 amLAS - STL

Nonstop3h 28mFrontier

Deal found 9/10

$97

Sat 11/83:59 pmLAS - STL

2 stops39h 08mFrontier

Deal found 9/10

$98

Thu 11/276:00 amLAS - STL

1 stop10h 58mFrontier

Deal found 9/11

$99

Fri 11/711:11 amLAS - STL

2 stops19h 56mFrontier

Deal found 9/10

$101

Sat 10/118:49 pmLAS - STL

1 stop10h 33mFrontier

Deal found 9/10

$102

Mon 11/38:48 pmLAS - STL

1 stop10h 19mFrontier

Deal found 9/11

$104

Sat 9/2710:09 pmLAS - STL

1 stop9h 31mSpirit Airlines

Deal found 9/9

$105

Fri 12/121:35 pmLAS - STL

2 stops18h 27mFrontier

Deal found 9/10

$106

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

Las VegasSt. Louis

LAS - STL

LASSTL

Las Vegas Harry Reid Intl

Thu 10/2

8:34 am-1:53 pm

Nonstop3h 19m

Lambert-St Louis

Sun 10/5

2:38 pm-4:16 pm

Nonstop3h 38m

$103

Las VegasSt. Louis

LAS - STL

LASSTL

Las Vegas Harry Reid Intl

Wed 10/8

12:59 am-9:07 am

1 stop6h 08m

Lambert-St Louis

Sun 10/12

10:17 am-11:44 pm

1 stop15h 27m

$125

Las VegasSt. Louis

LAS - STL

LASSTL

Las Vegas Harry Reid Intl

Mon 10/27

12:59 am-9:07 am

1 stop6h 08m

Lambert-St Louis

Sat 11/1

8:40 pm-8:38 pm

1 stop25h 58m

$141

Las VegasSt. Louis

LAS - STL

LASSTL

Las Vegas Harry Reid Intl

Wed 10/29

4:56 pm-9:07 am

1 stop14h 11m

Lambert-St Louis

Sat 11/1

8:40 pm-8:38 pm

1 stop25h 58m

$144

Las VegasSt. Louis

LAS - STL

LASSTL

Las Vegas Harry Reid Intl

Mon 9/22

12:59 am-9:06 am

1 stop6h 07m

Lambert-St Louis

Tue 9/30

7:55 pm-11:33 pm

1 stop5h 38m

$153

Las VegasSt. Louis

LAS - STL

LASSTL

Las Vegas Harry Reid Intl

Mon 10/27

12:59 am-9:07 am

1 stop6h 08m

Lambert-St Louis

Thu 10/30

11:07 am-9:28 pm

1 stop12h 21m

$154

Las VegasSt. Louis

LAS - STL

LASSTL

Las Vegas Harry Reid Intl

Sat 11/8

12:59 am-9:07 am

1 stop6h 08m

Lambert-St Louis

Thu 11/13

6:22 pm-11:46 pm

1 stop7h 24m

$162

Las VegasSt. Louis

LAS - STL

LASSTL

Las Vegas Harry Reid Intl

Mon 11/3

8:48 pm-9:07 am

1 stop10h 19m

$104

Las VegasSt. Louis

LAS - STL

LASSTL

Las Vegas Harry Reid Intl

Sat 11/15

10:45 am-9:07 am

2 stops20h 22m

$121

Las VegasSt. Louis

LAS - STL

LASSTL

Las Vegas Harry Reid Intl

Wed 11/12

12:59 am-5:27 pm

2 stops14h 28m

$124

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/11

Showing 1-10 of 17 results

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

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.

STL

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

Our travel experts

Taryn White

Expert on STL

Ramsey Qubein

Expert on LAS

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?

To ensure you get the cheapest price possible for a flight from Las Vegas to St. Louis, you should look to book at least 24 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, August is the cheapest month in which you can book a flight from Las Vegas to St. Louis (average of $311). Flying from Las Vegas to St. Louis in March is currently the most expensive (average of $356). 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?

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 59% on airfare.

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

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

Reviews of airlines servicing St. Louis

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

8.0

Very good

4,248 reviews

Reviews

1 / 20

2.0

Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines

Southwest

8.0

Very good

4,248 reviews

Southwest

8.0

Very good

4,248 reviews

Reviews

1 / 20

2.0

Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines

Delta

8.0

Very good

7,960 reviews

Southwest

8.0

Very good

4,248 reviews

Reviews

1 / 20

2.0

Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines

United Airlines

7.4

Good

8,937 reviews

Southwest

8.0

Very good

4,248 reviews

Reviews

1 / 20

2.0

Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines

American Airlines

7.2

Good

10,000 reviews

Southwest

8.0

Very good

4,248 reviews

Reviews

1 / 20

2.0

Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines

Frontier

5.8

Fair

3,177 reviews

Southwest

8.0

Very good

4,248 reviews

Reviews

1 / 20

2.0

Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines

Related info for your journey

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 6 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 5 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, 17 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 19m. Frontier provides one of the quickest options available for as low as $103. 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 $90. Additional round-trip tickets that might be worth considering are offered by American Airlines and Delta, with the lowest prices starting at $144 and $258, respectively. Frontier is priced at 65% lower than the current average price of a flight leaving 3 months from now.
What are the cheapest flights from Las Vegas to St. Louis?
The cheapest flight price from Las Vegas to St. Louis is $86. On average you can expect to pay $212. The most popular route, (Las Vegas Harry Reid Intl - Lambert-St Louis), can usually be booked for $112.
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, August is the cheapest month in which you can book a flight from Las Vegas to St. Louis (average of $311). Flying from Las Vegas to St. Louis in March is currently the most expensive (average of $356). 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

Edwardsville

O'Fallon

Fairview Heights

Maryland Heights

Collinsville

Eureka

Glencoe

St. Peters

Chesterfield

Alton

Farmington

Festus

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Top 5 airlines flying from Las Vegas to St. Louis

Airline	Cheapest	Average	Flexibility	On-time
Frontier	Cheapest$90	Average$210	FlexibilityNo cancel fee	On-time62%
American Airlines	Cheapest$144	Average$368	FlexibilityNo cancel fee	On-time71%
Delta	Cheapest$258	Average$356	FlexibilityNo cancel fee	On-timeN/A
United Airlines	Cheapest$258	Average$488	FlexibilityNo cancel fee	On-time69%
Southwest	Cheapest$271	Average$415	FlexibilityNo cancel fee	On-time63%

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$61+ Cheap flights from Las Vegas to St. Louis (LAS - STL)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/3. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Las Vegas to St. Louis with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheapflights Tip: The best prices from Las Vegas Harry Reid Intl to Lambert-St Louis are usually found in February or September, booked 24 days in advance, depart on a Friday or Thursday and return on a Monday

Cheap flight deals from Las Vegas to St. Louis

Round-trip from

Popular in

Cheapest in

Average price

Good round-trip deal

Good one-way deal

Find flight deals from Las Vegas to St. Louis

Cheapest flights from Las Vegas to St. LouisExplore 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 September 11, 2025.

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 September 11, 2025.

Cheapflights Fare Finder

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

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

Cheapflights partnered with top experts to bring you the best recommendations for your Las Vegas to St. Louis trip

Airports

LAS

STL

Our travel experts

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.

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?

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

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

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

Reviews of airlines servicing St. Louis

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.

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?

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

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

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

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

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

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

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

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

Traveling to a place near St. Louis?

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Las Vegas to St. Louis

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

Top 5 airlines flying from Las Vegas to St. Louis

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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 September 11, 2025.