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Cheap flights from Las Vegas to St. Louis 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 Las Vegas to St. Louis departing on 4/24. 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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Find the cheapest flights from Las Vegas to St. Louis

Cheap round-trip flights

KAYAK's recommended round-trip deals from the most popular airlines that fly from Las Vegas to St. Louis.
Frontier Logo
3:43 pm - 9:05 pmLAS-STL
3h 22mnonstop
Frontier Logo
9:55 pm - 11:39 pmSTL-LAS
3h 44mnonstop
$110Frontier
Find Deal
Thu, Apr 24 - Sun, Apr 27
Frontier Logo
12:22 pm - 5:43 pmLAS-STL
3h 21mnonstop
Frontier Logo
1:06 pm - 2:51 pmSTL-LAS
3h 45mnonstop
$121Frontier
Find Deal
Sat, Apr 12 - Sun, Apr 13
Southwest Logo
6:00 pm - 11:15 pmLAS-STL
3h 15mnonstop
Southwest Logo
8:55 pm - 10:25 pmSTL-LAS
3h 30mnonstop
$271Southwest
Find Deal
Tue, May 6 - Fri, May 9
Southwest Logo
1:50 pm - 9:15 pmLAS-STL
5h 25m1 stop
Southwest Logo
8:55 pm - 10:25 pmSTL-LAS
3h 30mnonstop
$301Southwest
Find Deal
Wed, Apr 30 - Wed, May 7
Spirit Airlines Logo
1:07 am - 5:15 pmLAS-STL
14h 08m3 stops
Spirit Airlines Logo
6:10 pm - 12:59 amSTL-LAS
8h 49m1 stop
$305Spirit Airlines
Find Deal
Wed, Apr 23 - Sun, Apr 27
Spirit Airlines Logo
10:55 pm - 7:49 amLAS-STL
6h 54m1 stop
Spirit Airlines Logo
8:44 am - 8:06 pmSTL-LAS
13h 22m1 stop
$317Spirit Airlines
Find Deal
Thu, Jul 10 - Sun, Jul 13
American Airlines Logo
12:59 am - 9:54 amLAS-STL
6h 55m1 stop
American Airlines Logo
6:52 am - 10:47 amSTL-LAS
5h 55m1 stop
$358American Airlines
Find Deal
Thu, May 8 - Mon, May 12
American Airlines Logo
12:59 am - 9:54 amLAS-STL
6h 55m1 stop
American Airlines Logo
3:58 pm - 8:47 pmSTL-LAS
6h 49m1 stop
$413American Airlines
Find Deal
Thu, May 22 - Tue, May 27
United Airlines Logo
12:59 am - 10:39 amLAS-STL
7h 40m1 stop
United Airlines Logo
4:32 pm - 12:27 amSTL-LAS
9h 55m2 stops
$454United Airlines
Find Deal
Tue, Jun 10 - Wed, Jun 11
United Airlines Logo
12:59 am - 12:20 pmLAS-STL
9h 21m2 stops
United Airlines Logo
1:41 pm - 10:40 pmSTL-LAS
10h 59m1 stop
$469United Airlines
Find Deal
Wed, Apr 30 - Mon, May 5

Frontier flights from Las Vegas to St. Louis

Our best Frontier deals on Las Vegas to St. Louis flight tickets
Frontier
Apr 24
LAS3:43 pmLas Vegas Harry Reid Intl
3h 22m
STL9:05 pmLambert-St Louis
Apr 27
STL9:55 pmLambert-St Louis
3h 44m
LAS11:39 pmLas Vegas Harry Reid Intl
Frontier
Apr 10
LAS7:00 amLas Vegas Harry Reid Intl
3h 16m
STL12:16 pmLambert-St Louis
Apr 13
STL1:06 pmLambert-St Louis
3h 45m
LAS2:51 pmLas Vegas Harry Reid Intl
Frontier
Apr 10
LAS7:00 amLas Vegas Harry Reid Intl
3h 16m
STL12:16 pmLambert-St Louis
Apr 13
STL1:06 pmLambert-St Louis
3h 45m
LAS2:51 pmLas Vegas Harry Reid Intl

Delta flights from Las Vegas to St. Louis

Our best Delta deals on Las Vegas to St. Louis flight tickets
Delta
Apr 30
LAS12:40 amLas Vegas Harry Reid Intl
7h 50m
1 stop
STL10:30 amLambert-St Louis
May 5
STL7:15 pmLambert-St Louis
6h 10m
1 stop
LAS11:25 pmLas Vegas Harry Reid Intl
Delta
Jul 15
LAS10:05 amLas Vegas Harry Reid Intl
5h 58m
1 stop
STL6:03 pmLambert-St Louis
Jul 22
STL6:59 pmLambert-St Louis
5h 54m
1 stop
LAS10:53 pmLas Vegas Harry Reid Intl
Delta
Jun 5
LAS12:54 amLas Vegas Harry Reid Intl
7h 53m
1 stop
STL10:47 amLambert-St Louis
Jun 13
STL7:15 pmLambert-St Louis
6h 11m
1 stop
LAS11:26 pmLas Vegas Harry Reid Intl

See travel insights to St. Louis from

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

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 St. Louis?

In general, September is the cheapest month to fly from Las Vegas to St. Louis. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $152. The month of February is another great option to travel to St. Louis, with average flight prices from Las Vegas averaging around $163.

What is the cheapest day to depart on your flight to St. Louis?

The cheapest day to depart on your flight to St. Louis is on a Friday when prices can be found for as low as $171. This is often the case because there is less demand to fly during this day of the week. If your travel schedule is flexible, try to avoid departing on a Monday because tickets tend to average around $326. These prices are subject to change though, so be sure to set up a Price Alert for flights to St. Louis.

What is the cheapest time of day to depart on your flight to St. Louis?

Flying to St. Louis from Las Vegas in the afternoon is the least expensive time of day to depart. momondo users have found prices as low as $167 when looking at flights departing in the afternoon. In the evening is when there is more demand to fly to St. Louis, so prices are often more expensive at around $431 per ticket.

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

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

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

You are more likely to see cheaper flights to St. Louis from Las Vegas when booking 16 weeks ahead of your departure date. In general, you can expect to find flights to St. Louis for around $218 when searching 16 weeks out.However, flight prices might be lower outside of this timeframe. For example, people recently found flights to St. Louis from Las Vegas for as low as $141 on momondo.

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

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

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

As of April 2025, prices for Las Vegas to St. Louis flights are approximately 11% cheaper when compared to flights at the same time last year.

When to book flights from Las Vegas to St. Louis

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

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

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

Best Price Found

$55

Fastest flight time

3h 05m

Direct flights

Every day

Airports in St. Louis

1 airport
The best one-way flight to St. Louis from Las Vegas in the past 72 hours is $55. The best round-trip flight deal from Las Vegas to St. Louis found on momondo in the last 72 hours is $110.
The fastest flight from Las Vegas to St. Louis takes 3h 05m
Direct flights go from Las Vegas to St. Louis every day.
There is 1 airport near St. Louis: Lambert-St Louis (STL)

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

    Las Vegas Harry Reid Intl and Lambert-St Louis are 1374.1 mi apart from one another. Flights usually cover this in 3h 05m, depending on flying conditions and air traffic around both airports.

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

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

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

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

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Las Vegas Harry Reid Intl Airport to Lambert-St Louis Airport.

  • What documentation or ID do you need to fly to Lambert-St Louis Airport?

    The necessary travel and health documents for your Lambert-St Louis 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 Las Vegas to St. Louis?

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


Best airlines flying from Las Vegas to St. Louis

Compare and see reviews for airlines that fly from Las Vegas to St. Louis with momondo
Airline
Rating
Free Cancellation
Price
FrontierPriceFrom $77Free CancellationRating
5.9
3,276 reviews
Search Frontier flights
Spirit AirlinesPriceFrom $100Free CancellationRating
6.3
7,889 reviews
Search Spirit Airlines flights
DeltaPriceFrom $258Free CancellationRating
8.0
7,897 reviews
Search Delta flights
United AirlinesPriceFrom $258Free CancellationRating
7.4
8,616 reviews
Search United Airlines flights
American AirlinesPriceFrom $258Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
SouthwestPriceFrom $291Free CancellationRating
8.0
4,274 reviews
Search Southwest flights
  • Southwest Flights From Las Vegas to St. Louis

    Across 27 Southwest flights from Las Vegas to St. Louis this week, the average price was $432, with the best Southwest deals starting from $291 round-trip. 4,272 users have rated Southwest on momondo, with an average score of 8.0/10.

  • Frontier Flights From Las Vegas to St. Louis

    Frontier is also a popular choice for this route. Frontier flight deals for Las Vegas to St. Louis start from as low as $77 round-trip, depending on your selected dates, with average Frontier deals seen on momondo around $171. Frontier operates 1 flight to St. Louis from Las Vegas in an average week. Users have rated it 5.9/10 across 3,276 reviews.


Traveling to a place near St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
St. Charles
Chesterfield
Florissant
Fairview Heights
Maryland Heights
Hermann
Collinsville
Fenton
Farmington
O'Fallon
St. Peters
Wentzville
Alton
Glencoe
Eureka
Festus
Edwardsville
Clayton
Grafton
Litchfield

Why use momondo?

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Las Vegas to St. Louis for you.

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

momondo does allow users to show only those flights to St. Louis from Las Vegas which offer a flexible booking policy as well as other useful filters and features.

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

momondo helps you find the best flight between Las Vegas and St. Louis by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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

Yes. momondo can track prices for Las Vegas to St. Louis flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.


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