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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Frontier flights from Las Vegas to St. Louis
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Spirit Airlines flights from Las Vegas to St. Louis
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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.
What is the cheapest airline that flies from Las Vegas Harry Reid Intl to Lambert-St Louis?
Spirit Airlines, Frontier, and American Airlines are the most popular carriers operating from Las Vegas Harry Reid Intl to Lambert-St Louis
What airlines fly to St. Louis?
Frontier, Southwest and American Airlines are the top three most popular airlines that fly to St. Louis from Las Vegas according to our data. Frontier is the first choice among our users, with 73% of people opting to fly with this airline when traveling to St. Louis. Keep in mind that there are 6 different airlines that fly to St. Louis on a routine basis, so you have a few additional options to choose from.
How many flights depart from Las Vegas to St. Louis on average per day?
6 flights are operational daily from Las Vegas to St. Louis as of July 2025. The most popular departure time for this route is 8:00AM, with 45% of flights per day taking off at noon.
How many flights depart from Las Vegas to St. Louis on average per week?
47 flights are operational weekly from Las Vegas to St. Louis as of July 2025. The most popular departure day for this route is Tue, with 21% of flights per week taking off on this day.
When to book flights from Las Vegas to St. Louis
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
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?
As of July 2025, there are 6 operators available to choose from 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?
momondo data reveals that the most frequently booked plane model on the route from Las Vegas to St. Louis is Boeing 737 MAX 8, representing 25.47% of all bookings. The subsequent popular models are Boeing 737-700 Passenger/BBJ1 (winglets) at 24.38%, Airbus A320neo at 24.06%, and Boeing 737-800 Passenger/BBJ2 (winglets) at 15.78%.
What is the most popular airline from Las Vegas to St. Louis?
Based on momondo bookings for this flight route, the most popular airline on flight routes from Las Vegas to St. Louis is Frontier (70% of total bookings). The next most popular airlines are Southwest (20%), American Airlines (3%), and United Airlines (2%).
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 | ||
|---|---|---|---|---|---|
| PriceFrom $82 | Free Cancellation | Rating 5.9 3,271 reviews | |||
| PriceFrom $91 | Free Cancellation | Rating 6.3 8,059 reviews | |||
| PriceFrom $144 | Free Cancellation | Rating 7.2 10,000 reviews | |||
| PriceFrom $258 | Free Cancellation | Rating 8.0 7,954 reviews | |||
| PriceFrom $258 | Free Cancellation | Rating 7.4 8,842 reviews | |||
| PriceFrom $291 | Free Cancellation | Rating 8.0 4,252 reviews |
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 locationsWhy 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.