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Cheap flights from Las Vegas to St. Louis from $71

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 8/16. 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 Las Vegas to St. Louis

Cheap round-trip flights

Frontier Logo
3:19 pm - 8:44 pmLAS-STL
3h 25mnonstop
Frontier Logo
2:38 pm - 4:16 pmSTL-LAS
3h 38mnonstop
$156Frontier
Find Deal
Mon, Sep 8 - Mon, Sep 15
American Airlines Logo
11:55 pm - 8:20 amLAS-STL
6h 25m1 stop
American Airlines Logo
10:16 am - 5:34 pmSTL-LAS
9h 18m1 stop
$159American Airlines
Find Deal
Wed, Aug 6 - Wed, Aug 13
Frontier Logo
12:59 am - 9:11 amLAS-STL
6h 12m1 stop
Frontier Logo
2:36 pm - 8:52 pmSTL-LAS
8h 16m1 stop
$161Frontier
Find Deal
Thu, Jul 24 - Sun, Jul 27
Frontier Logo
3:19 pm - 8:44 pmLAS-STL
3h 25mnonstop
Frontier Logo
9:29 pm - 11:05 pmSTL-LAS
3h 36mnonstop
$166Frontier
Find Deal
Mon, Sep 8 - Mon, Sep 15
Frontier Logo
8:20 am - 1:42 pmLAS-STL
3h 22mnonstop
Frontier Logo
2:36 pm - 8:52 pmSTL-LAS
8h 16m1 stop
$169Frontier
Find Deal
Thu, Aug 7 - Sun, Aug 10
Spirit Airlines Logo
10:43 pm - 1:32 pmLAS-STL
12h 49m1 stop
Spirit Airlines Logo
2:30 pm - 8:14 amSTL-LAS
19h 44m2 stops
$177Spirit Airlines
Find Deal
Wed, Aug 20 - Sun, Aug 24
 Logo
10:15 pm - 9:40 amLAS-STL
9h 25m1 stop
 Logo
7:54 pm - 11:34 pmSTL-LAS
5h 40m1 stop
Sat, Aug 30 - Tue, Sep 2
Spirit Airlines Logo
10:43 pm - 1:32 pmLAS-STL
12h 49m1 stop
Spirit Airlines Logo
2:30 pm - 9:38 pmSTL-LAS
9h 08m1 stop
$198Spirit Airlines
Find Deal
Wed, Aug 20 - Sun, Aug 24
Southwest Logo
4:15 pm - 9:30 pmLAS-STL
3h 15mnonstop
Southwest Logo
5:25 pm - 6:55 pmSTL-LAS
3h 30mnonstop
$209Southwest
Find Deal
Wed, Aug 6 - Wed, Aug 13
Delta Logo
5:19 pm - 12:38 amLAS-STL
5h 19m1 stop
Delta Logo
7:00 pm - 11:30 pmSTL-LAS
6h 30m1 stop
$217Delta
Find Deal
Mon, Sep 8 - Mon, Sep 15

Frontier flights from Las Vegas to St. Louis

Our best Frontier deals on Las Vegas to St. Louis flight tickets
Frontier
Sep 8
LAS3:19 pmLas Vegas Harry Reid Intl
3h 25m
STL8:44 pmLambert-St Louis
Sep 15
STL2:38 pmLambert-St Louis
3h 38m
LAS4:16 pmLas Vegas Harry Reid Intl
Frontier
Jul 24
LAS12:59 amLas Vegas Harry Reid Intl
6h 12m
1 stop
STL9:11 amLambert-St Louis
Jul 27
STL2:36 pmLambert-St Louis
8h 16m
1 stop
LAS8:52 pmLas Vegas Harry Reid Intl
Frontier
Jul 15
LAS12:59 amLas Vegas Harry Reid Intl
6h 12m
1 stop
STL9:11 amLambert-St Louis
Jul 17
STL2:36 pmLambert-St Louis
8h 16m
1 stop
LAS8:52 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
Aug 20
LAS10:43 pmLas Vegas Harry Reid Intl
12h 49m
1 stop
STL1:32 pmLambert-St Louis
Aug 24
STL2:30 pmLambert-St Louis
19h 44m
2 stops
LAS8:14 amLas Vegas Harry Reid Intl
Spirit Airlines
Aug 20
LAS10:43 pmLas Vegas Harry Reid Intl
12h 49m
1 stop
STL1:32 pmLambert-St Louis
Aug 24
STL2:30 pmLambert-St Louis
9h 08m
1 stop
LAS9:38 pmLas Vegas Harry Reid Intl
Spirit Airlines
Jul 22
LAS12:52 amLas Vegas Harry Reid Intl
7h 37m
1 stop
STL10:29 amLambert-St Louis
Jul 26
STL10:45 amLambert-St Louis
14h 44m
1 stop
LAS11:29 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, February 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 $163. The month of August is another great option to travel to St. Louis, with average flight prices from Las Vegas averaging around $168.

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 $206. 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 Wednesday because tickets tend to average around $374. 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 $176 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 weeks ahead of your departure date. In general, you can expect to find flights to St. Louis for around $250 when searching 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 $185 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.

Can stopping save me money on Las Vegas to St. Louis flights?

No. A direct flight is the cheapest option for a flight between Las Vegas to St. Louis.

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

As of July 2025, prices for Las Vegas to St. Louis flights are approximately 14% 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

$71

Fastest flight time

3h 15m

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 $71. The best round-trip flight deal from Las Vegas to St. Louis found on momondo in the last 72 hours is $156.
The fastest flight from Las Vegas to St. Louis takes 3h 15m
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 15m, 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 $82Free CancellationRating
5.9
3,271 reviews
Search Frontier flights
Spirit AirlinesPriceFrom $91Free CancellationRating
6.3
8,059 reviews
Search Spirit Airlines flights
American AirlinesPriceFrom $144Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
DeltaPriceFrom $258Free CancellationRating
8.0
7,954 reviews
Search Delta flights
United AirlinesPriceFrom $258Free CancellationRating
7.4
8,842 reviews
Search United Airlines flights
SouthwestPriceFrom $291Free CancellationRating
8.0
4,252 reviews
Search Southwest flights
  • Southwest Flights From Las Vegas to St. Louis

    Across 47 Southwest flights from Las Vegas to St. Louis this week, the average price was $434, with the best Southwest deals starting from $291 round-trip. 4,253 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
Hermann
Fairview Heights
Maryland Heights
Florissant
Collinsville
Fenton
Farmington
O'Fallon
St. Peters
Alton
Wentzville
Festus
Glencoe
Clayton
Eureka
Edwardsville
Grafton
Shrewsbury

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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1 adult
Mon 7/14
Mon 7/21

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