Cheap flights from St. Louis to Las Vegas from $53
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 9/18. 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 St. Louis to Las Vegas
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Spirit Airlines flights from St. Louis to Las Vegas
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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 typical price of a round-trip flight between St. Louis and Las Vegas?
What is the cheapest month to fly to Las Vegas?
The month of February is, on average, the cheapest month to fly to Las Vegas from St. Louis, with most prices found around $221. The month of August is another great option to travel to Las Vegas, with average flight prices from St. Louis averaging around $229.
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 $235. Flights from St. Louis to Las Vegas on a Saturday will generally be more expensive and average around $355. 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 $230. Flights to Las Vegas are more costly in the morning, with an average ticket price of $473. 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 weeks ahead of your departure date. In general, you can expect to find flights to Las Vegas for around $288 when searching 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 $250 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.
Can stopping save me money on St. Louis to Las Vegas flights?
No. A direct flight is the cheapest option for a flight between St. Louis to Las Vegas.
How have St. Louis to Las Vegas flight prices changed over time?
As of July 2025, prices for St. Louis to Las Vegas flights are approximately 10% cheaper when compared to flights at the same time last year.
What is the cheapest airline that flies from Lambert-St Louis to Las Vegas Harry Reid Intl?
Frontier, Spirit Airlines, and Hawaiian Airlines are the most popular carriers operating from Lambert-St Louis to Las Vegas Harry Reid Intl
What airlines fly to Las Vegas?
Frontier, Southwest and American Airlines are the top three most popular airlines that fly to Las Vegas from St. Louis according to our data. Frontier is the first choice among our users, with 61% of people opting to fly with this airline when traveling to Las Vegas. Keep in mind that there are 8 different airlines that fly to Las Vegas on a routine basis, so you have a few additional options to choose from.
How many flights depart from St. Louis to Las Vegas on average per day?
5 flights are operational daily from St. Louis to Las Vegas as of July 2025. The most popular departure time for this route is 9:00AM, with 39% of flights per day taking off at noon.
How many flights depart from St. Louis to Las Vegas on average per week?
The number of flights available between St. Louis and Las Vegas is 39 per week as of July 2025. The most frequent departure day is Tue, with 26% of weekly flights leaving on this day.
When to book flights from St. Louis to Las Vegas
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
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 36m 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?
As of July 2025, there are 8 operators available to choose from 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?
momondo data reveals that the most frequently booked plane model on the route from St. Louis to Las Vegas is Boeing 737-800 Passenger/BBJ2 (winglets), representing 30.38% of all bookings. The subsequent popular models are Airbus A320neo at 24.45%, Boeing 737 MAX 8 at 20.79%, and Boeing 737-700 Passenger/BBJ1 (winglets) at 14.22%.
What is the most popular airline from St. Louis to Las Vegas?
Based on momondo bookings for flights between St. Louis and Las Vegas, the leading airline is Frontier, making up 60% of the total bookings. Other popular airlines include Southwest with 26%, American Airlines with 6%, and Spirit Airlines with 4%.
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 | ||
|---|---|---|---|---|---|
| PriceFrom $83 | Free Cancellation | Rating 6.3 8,086 reviews | |||
| PriceFrom $94 | Free Cancellation | Rating 5.9 3,286 reviews | |||
| PriceFrom $104 | Free Cancellation | Rating 7.2 708 reviews | |||
| PriceFrom $178 | Free Cancellation | Rating 8.0 7,982 reviews | |||
| PriceFrom $209 | Free Cancellation | Rating 7.2 10,000 reviews | |||
| PriceFrom $258 | Free Cancellation | Rating 7.4 8,861 reviews | |||
| PriceFrom $290 | Free Cancellation | Rating 8.0 4,266 reviews | |||
| PriceFrom $342 | Free Cancellation | Rating 8.0 10,000 reviews |
Southwest Flights From St. Louis to Las Vegas
Southwest operates around 37 flights from St. Louis to Las Vegas every week. The average price of these flights found in the last 72 hours has been $467, but momondo users have found Southwest deals from St. Louis to Las Vegas from as low as $290 round-trip. Southwest has been scored 8.0/10 in 4,270 reviews.
Frontier Flights From St. Louis to Las Vegas
Another popular option for St. Louis to Las Vegas flights is Frontier (5.9/10, 3,284 ratings). Frontier flies from St. Louis to Las Vegas around 2 times per week, with deals starting from $94 round-trip and rising to an average price of around $232.
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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.