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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 5/2. 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
3:39 pm - 9:05 pmLAS-STL
3h 26mnonstop
Frontier Logo
9:55 pm - 11:41 pmSTL-LAS
3h 46mnonstop
$110Frontier
Find Deal
Fri, May 9 - Sun, May 11
Frontier Logo
12:59 am - 9:59 amLAS-STL
7h 00m1 stop
Frontier Logo
9:55 pm - 11:41 pmSTL-LAS
3h 46mnonstop
$126Frontier
Find Deal
Fri, May 9 - Sun, May 11
Spirit Airlines Logo
9:12 pm - 10:33 amLAS-STL
11h 21m1 stop
Spirit Airlines Logo
11:28 am - 12:54 amSTL-LAS
15h 26m1 stop
$227Spirit Airlines
Find Deal
Thu, Jun 19 - Mon, Jun 23
Spirit Airlines Logo
9:12 pm - 10:33 amLAS-STL
11h 21m1 stop
Spirit Airlines Logo
6:12 pm - 8:20 pmSTL-LAS
28h 08m1 stop
$237Spirit Airlines
Find Deal
Thu, Jun 19 - Sun, Jun 22
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
$291American Airlines
Find Deal
Wed, May 14 - Thu, May 22
Southwest Logo
6:30 am - 12:50 pmLAS-STL
4h 20m1 stop
Southwest Logo
9:25 am - 10:55 amSTL-LAS
3h 30mnonstop
$330Southwest
Find Deal
Wed, May 21 - Wed, May 28
Southwest Logo
6:00 am - 11:10 amLAS-STL
3h 10mnonstop
Southwest Logo
6:05 pm - 7:40 pmSTL-LAS
3h 35mnonstop
$337Southwest
Find Deal
Tue, May 20 - Tue, May 27
American Airlines Logo
12:59 am - 9:54 amLAS-STL
6h 55m1 stop
American Airlines Logo
7:19 pm - 10:55 pmSTL-LAS
5h 36m1 stop
$358American Airlines
Find Deal
Wed, May 14 - Sun, May 18
United Airlines Logo
12:59 am - 10:39 amLAS-STL
7h 40m1 stop
United Airlines Logo
3:40 pm - 10:00 pmSTL-LAS
8h 20m1 stop
$410United Airlines
Find Deal
Sat, May 31 - Sun, Jun 1
United Airlines Logo
12:59 am - 12:19 pmLAS-STL
9h 20m2 stops
United Airlines Logo
5:00 am - 12:52 pmSTL-LAS
9h 52m1 stop
$436United Airlines
Find Deal
Tue, May 20 - Wed, May 28

Frontier flights from Las Vegas to St. Louis

Our best Frontier deals on Las Vegas to St. Louis flight tickets
Frontier
May 2
LAS3:39 pmLas Vegas Harry Reid Intl
3h 26m
STL9:05 pmLambert-St Louis
May 11
STL9:55 pmLambert-St Louis
3h 46m
LAS11:41 pmLas Vegas Harry Reid Intl
Frontier
May 2
LAS3:39 pmLas Vegas Harry Reid Intl
3h 26m
STL9:05 pmLambert-St Louis
May 5
STL9:55 pmLambert-St Louis
3h 46m
LAS11:41 pmLas Vegas Harry Reid Intl
Frontier
May 9
LAS12:59 amLas Vegas Harry Reid Intl
7h 00m
1 stop
STL9:59 amLambert-St Louis
May 11
STL9:55 pmLambert-St Louis
3h 46m
LAS11:41 pmLas Vegas Harry Reid Intl

Spirit Airlines flights from Las Vegas to St. Louis

Our best Spirit Airlines deals on Las Vegas to St. Louis flight tickets
Spirit Airlines
Jun 19
LAS9:12 pmLas Vegas Harry Reid Intl
11h 21m
1 stop
STL10:33 amLambert-St Louis
Jun 23
STL11:28 amLambert-St Louis
15h 26m
1 stop
LAS12:54 amLas Vegas Harry Reid Intl
Spirit Airlines
Jun 19
LAS9:12 pmLas Vegas Harry Reid Intl
11h 21m
1 stop
STL10:33 amLambert-St Louis
Jun 22
STL6:12 pmLambert-St Louis
28h 08m
1 stop
LAS8:20 pmLas Vegas Harry Reid Intl
Spirit Airlines
Jul 10
LAS5:28 pmLas Vegas Harry Reid Intl
12h 21m
1 stop
STL7:49 amLambert-St Louis
Jul 13
STL8:44 amLambert-St Louis
13h 22m
1 stop
LAS8:06 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 13 weeks ahead of your departure date. In general, you can expect to find flights to St. Louis for around $227 when searching 13 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 $155 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 4% more expensive 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
3,283 reviews
Search Frontier flights
Spirit AirlinesPriceFrom $100Free CancellationRating
6.3
7,940 reviews
Search Spirit 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
American AirlinesPriceFrom $258Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
SouthwestPriceFrom $291Free CancellationRating
8.0
4,287 reviews
Search Southwest flights
  • Southwest Flights From Las Vegas to St. Louis

    Across 41 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. 4,287 users have rated Southwest on momondo, with an average score of 8.0/10.


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
Maryland Heights
Hermann
Fairview Heights
Collinsville
Fenton
Farmington
O'Fallon
St. Peters
Wentzville
Alton
Glencoe
Eureka
Edwardsville
Festus
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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