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Cheap flights from St. Louis to Las Vegas from $55

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from St. Louis to Las Vegas departing on 5/16. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Find the cheapest flights from St. Louis to Las Vegas

Cheap round-trip flights

KAYAK's recommended round-trip deals from the most popular airlines that fly from St. Louis to Las Vegas.
Frontier Logo
9:55 pm - 11:41 pmSTL-LAS
3h 46mnonstop
Frontier Logo
3:39 pm - 9:05 pmLAS-STL
3h 26mnonstop
$110Frontier
Find Deal
Mon, May 5 - Fri, May 9
Frontier Logo
9:55 pm - 11:41 pmSTL-LAS
3h 46mnonstop
Frontier Logo
3:39 pm - 9:05 pmLAS-STL
3h 26mnonstop
$112Frontier
Find Deal
Mon, May 5 - Thu, May 15
Frontier Logo
9:55 pm - 11:41 pmSTL-LAS
3h 46mnonstop
Frontier Logo
8:20 am - 1:40 pmLAS-STL
3h 20mnonstop
$116Frontier
Find Deal
Fri, May 16 - Fri, May 23
Frontier Logo
9:55 pm - 11:41 pmSTL-LAS
3h 46mnonstop
Frontier Logo
3:39 pm - 9:05 pmLAS-STL
3h 26mnonstop
$118Frontier
Find Deal
Thu, May 8 - Thu, May 15
Frontier Logo
2:27 pm - 4:05 pmSTL-LAS
3h 38mnonstop
Frontier Logo
8:20 am - 1:42 pmLAS-STL
3h 22mnonstop
$119Frontier
Find Deal
Mon, Jun 30 - Fri, Jul 4
 Logo
9:55 pm - 11:41 pmSTL-LAS
3h 46mnonstop
 Logo
9:24 pm - 9:15 amLAS-STL
9h 51m1 stop
Mon, May 5 - Wed, May 7
 Logo
9:55 pm - 11:41 pmSTL-LAS
3h 46mnonstop
 Logo
9:24 pm - 9:15 amLAS-STL
9h 51m1 stop
Sun, May 4 - Wed, May 7
Spirit Airlines Logo
6:10 pm - 12:59 amSTL-LAS
8h 49m1 stop
Spirit Airlines Logo
9:24 pm - 9:15 amLAS-STL
9h 51m1 stop
$200Spirit Airlines
Find Deal
Sun, May 4 - Wed, May 7
Spirit Airlines Logo
8:44 am - 8:06 pmSTL-LAS
13h 22m1 stop
Spirit Airlines Logo
10:55 pm - 7:49 amLAS-STL
6h 54m1 stop
$259Spirit Airlines
Find Deal
Thu, Jul 17 - Sat, Jul 19
Southwest Logo
8:55 pm - 10:25 pmSTL-LAS
3h 30mnonstop
Southwest Logo
6:10 pm - 11:25 pmLAS-STL
3h 15mnonstop
$291Southwest
Find Deal
Fri, May 16 - Sat, May 17

Frontier flights from St. Louis to Las Vegas

Our best Frontier deals on St. Louis to Las Vegas flight tickets
Frontier
May 5
STL9:55 pmLambert-St Louis
3h 46m
LAS11:41 pmLas Vegas Harry Reid Intl
May 9
LAS3:39 pmLas Vegas Harry Reid Intl
3h 26m
STL9:05 pmLambert-St Louis
Frontier
May 5
STL9:55 pmLambert-St Louis
3h 46m
LAS11:41 pmLas Vegas Harry Reid Intl
May 15
LAS3:39 pmLas Vegas Harry Reid Intl
3h 26m
STL9:05 pmLambert-St Louis
Frontier
May 16
STL9:55 pmLambert-St Louis
3h 46m
LAS11:41 pmLas Vegas Harry Reid Intl
May 23
LAS8:20 amLas Vegas Harry Reid Intl
3h 20m
STL1:40 pmLambert-St Louis

Spirit Airlines flights from St. Louis to Las Vegas

Our best Spirit Airlines deals on St. Louis to Las Vegas flight tickets
Spirit Airlines
May 4
STL6:10 pmLambert-St Louis
8h 49m
1 stop
LAS12:59 amLas Vegas Harry Reid Intl
May 7
LAS9:24 pmLas Vegas Harry Reid Intl
9h 51m
1 stop
STL9:15 amLambert-St Louis
Spirit Airlines
Jul 17
STL8:44 amLambert-St Louis
13h 22m
1 stop
LAS8:06 pmLas Vegas Harry Reid Intl
Jul 19
LAS10:55 pmLas Vegas Harry Reid Intl
6h 54m
1 stop
STL7:49 amLambert-St Louis
Spirit Airlines
Jul 21
STL8:44 amLambert-St Louis
13h 22m
1 stop
LAS8:06 pmLas Vegas Harry Reid Intl
Jul 24
LAS10:55 pmLas Vegas Harry Reid Intl
6h 54m
1 stop
STL7:49 amLambert-St Louis

See travel insights to Las Vegas from

How to get the cheapest flight ticket from St. Louis to Las Vegas

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Las Vegas?

The month of August is, on average, the cheapest month to fly to Las Vegas from St. Louis, with most prices found around $206. The month of September is another great option to travel to Las Vegas, with average flight prices from St. Louis averaging around $208.

What is the cheapest day to depart on your flight to Las Vegas?

Our data shows that Monday is the least expensive day to fly to Las Vegas. Tickets to fly out on this day can be as low as $185. Flights from St. Louis to Las Vegas on a Thursday will generally be more expensive and average around $278. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

What is the cheapest time of day to depart on your flight to Las Vegas?

The cheapest time of day to fly to Las Vegas is in the evening when flights can be purchased for as low as $208. Flights to Las Vegas are more costly in the morning, with an average ticket price of $422. Departure times in the morning fall within the peak daily travel times, which is why tickets can be more expensive.

What is the cheapest Lambert-St Louis to Las Vegas Harry Reid Intl flight route?

Fly from Lambert-St Louis to Las Vegas Harry Reid Intl for the best Lambert-St Louis - Las Vegas Harry Reid Intl flight prices

How far in advance should I book a flight to Las Vegas?

You are more likely to see cheaper flights to Las Vegas from St. Louis when booking 14 weeks ahead of your departure date. In general, you can expect to find flights to Las Vegas for around $261 when searching 14 weeks out.However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Las Vegas from St. Louis for as low as $218 on momondo.

What cabin class options are available on Lambert-St Louis to Las Vegas Harry Reid Intl flights?

There are 1 cabin classes available to choose from on Lambert-St Louis to Las Vegas Harry Reid Intl flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

How have St. Louis to Las Vegas flight prices changed over time?

As of April 2025, prices for St. Louis to Las Vegas flights are approximately 4% cheaper when compared to flights at the same time last year.

When to book flights from St. Louis to Las Vegas

Are you open to changing your travel dates? Check out the ideal times to fly from St. Louis to Las Vegas according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap St. Louis to Las Vegas (STL to LAS) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from St. Louis to Las Vegas

Best Price Found

$55

Fastest flight time

3h 30m

Direct flights

Every day

Airports in Las Vegas

1 airport
The best one-way flight to Las Vegas from St. Louis in the past 72 hours is $55. The best round-trip flight deal from St. Louis to Las Vegas found on momondo in the last 72 hours is $110.
The fastest flight from St. Louis to Las Vegas takes 3h 30m
Direct flights go from St. Louis to Las Vegas every day.
There is 1 airport near Las Vegas: Las Vegas Harry Reid Intl (LAS)

  • How far is Lambert-St Louis to Las Vegas Harry Reid Intl by plane?

    The straight-line distance from Lambert-St Louis to Las Vegas Harry Reid Intl is 1374.1 mi. 3h 30m is a normal flight duration for this route.

  • When did momondo last update prices for flights from Lambert-St Louis Airport to Las Vegas Harry Reid Intl Airport?

    Prices for flights from Lambert-St Louis Airport to Las Vegas Harry Reid Intl Airport were last updated today.

  • How many operators does momondo search for flights from Lambert-St Louis Airport to Las Vegas Harry Reid Intl Airport?

  • How old do you have to be to fly from Lambert-St Louis Airport to Las Vegas Harry Reid Intl Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Lambert-St Louis Airport to Las Vegas Harry Reid Intl Airport.

  • What documentation or ID do you need to fly to Las Vegas Harry Reid Intl Airport?

    The necessary travel and health documents for your Las Vegas Harry Reid Intl Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from St. Louis to Las Vegas?

  • What is the most popular airline from St. Louis to Las Vegas?


Best airlines flying from St. Louis to Las Vegas

Compare and see reviews for airlines that fly from St. Louis to Las Vegas with momondo
Airline
Rating
Free Cancellation
Price
Spirit AirlinesPriceFrom $76Free CancellationRating
6.3
7,941 reviews
Search Spirit Airlines flights
FrontierPriceFrom $79Free CancellationRating
5.9
3,283 reviews
Search Frontier flights
Allegiant AirPriceFrom $104Free CancellationRating
7.3
734 reviews
Search Allegiant Air flights
American AirlinesPriceFrom $217Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
DeltaPriceFrom $258Free CancellationRating
8.0
7,920 reviews
Search Delta flights
United AirlinesPriceFrom $258Free CancellationRating
7.4
8,685 reviews
Search United Airlines flights
SouthwestPriceFrom $288Free CancellationRating
8.0
4,287 reviews
Search Southwest flights
Alaska AirlinesPriceFrom $371Free CancellationRating
8.0
9,918 reviews
Search Alaska Airlines flights
  • Southwest Flights From St. Louis to Las Vegas

    Southwest operates around 44 flights from St. Louis to Las Vegas every week. The average price of these flights found in the last 72 hours has been $475, but momondo users have found Southwest deals from St. Louis to Las Vegas from as low as $288 round-trip. Southwest has been scored 8.0/10 in 4,286 reviews.

  • Frontier Flights From St. Louis to Las Vegas

    Another popular option for St. Louis to Las Vegas flights is Frontier (5.9/10, 3,283 ratings). Frontier flies from St. Louis to Las Vegas around 4 times per week, with deals starting from $79 round-trip and rising to an average price of around $215.


Traveling to a place near Las Vegas?

Book flights to Las Vegas if you plan to visit one of these locations
Laughlin
Mount Charleston
Henderson
Mesquite
North Las Vegas
Kingman
Paradise
Pahrump
Primm
Furnace Creek
Boulder City
Winchester
Sunrise Manor
Needles

Why use momondo?

Why should I use momondo to find a flight deal from St. Louis to Las Vegas?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from St. Louis to Las Vegas. Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from St. Louis to Las Vegas with flexible booking policies on momondo?

All flight searches from St. Louis to Las Vegas on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from St. Louis to Las Vegas?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from St. Louis to Las Vegas.

I’m not ready to book a flight from St. Louis to Las Vegas right now. Can momondo alert me if prices change?

Price alerts on flights to Las Vegas from St. Louis are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.


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