Cheap flights from St. Louis to Las Vegas (STL - LAS)

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The best prices from Lambert-St Louis to Las Vegas McCarran are usually found in September or January, booked 56 days in advance, depart on a Sunday or Monday and return on a Thursday

How to find the cheapest flight from
St. Louis (STL) to Las Vegas (LAS)

All the information you need to plan the best STL to LAS flight in 2021: compare St. Louis to Las Vegas flight prices with the expected peak season, weather and rainfall in Las Vegas.
STL - LAS
Price
$152 - $206
LAS
Temperature
59 - 105.8 °F
LAS
Precipitation
0.1 - 0.9 inches

Popular in

March

High demand for flights, 12% potential price rise

Cheapest in

September

Best time to find cheap flights, 16% potential price drop

Round-trip from

$152

From Lambert-St Louis to Las Vegas McCarran

One-way from

$43

One-way flight from Lambert-St Louis to Las Vegas McCarran

Flight route prices based on searches on Cheapflights within the last 3 days, monthly prices based on aggregated historical data.
What is the cheapest day to fly round-trip from St. Louis to Las Vegas?

Users have found that leaving on a Saturday can be a cost-effective option. It’s possible to save up to 77% on your flight compared to booking on days when demand is much higher.

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

Travelers have found it’s best to book a flight 25 days in advance to save up to 23% compared to booking the same week of travel. As your travel date approaches, the cost of this flight route may potentially increase. While opting to book 25 days out may not be an option for all, there are still additional ways to secure a deal in the near future. You might find a flight from St. Louis to Las Vegas 1-2 weeks in advance for as low as $177, or $216 for flights within the next 24 hours.

What is the cheapest month to fly from St. Louis to Las Vegas?

September can be a great time to fly to Las Vegas from St. Louis with a flight ticket averaging about $181. Cheapflights users have found deals in the month of September for as cheap as $113. The most expensive prices can be found in the month of March.

When is the cheapest time to fly from St. Louis to Las Vegas (STL - LAS)?

It’s typically best to fly out from St. Louis to Las Vegas at noon. Doing so could potentially save you 46% on the flight price compared to flying in the morning, which is usually more expensive.

Cheap flights from St. Louis to Las Vegas in September, October 2021

The best prices found for STL to LAS flights for September, October
13 Oct - 16 Oct
$47pp
STL
Lambert-St Louis
Spirit Airlines
Non-Stop
LAS
Las Vegas McCarran
LAS
Las Vegas McCarran
Spirit Airlines
Non-Stop
STL
Lambert-St Louis
9 Oct - 12 Oct
$57pp
STL
Lambert-St Louis
Spirit Airlines
Non-Stop
LAS
Las Vegas McCarran
LAS
Las Vegas McCarran
Spirit Airlines
Non-Stop
STL
Lambert-St Louis
21 Sep - 25 Sep
$60pp
STL
Lambert-St Louis
Spirit Airlines
Non-Stop
LAS
Las Vegas McCarran
LAS
Las Vegas McCarran
Spirit Airlines
Non-Stop
STL
Lambert-St Louis

Lambert-St Louis to Las Vegas 2021 flight deals

Cheap flights to Las Vegas from St. Louis found for this year
13 Oct - 16 Oct
$47pp
STL
Lambert-St Louis
Spirit Airlines
Non-Stop
LAS
Las Vegas McCarran
LAS
Las Vegas McCarran
Spirit Airlines
Non-Stop
STL
Lambert-St Louis
9 Oct - 12 Oct
$57pp
STL
Lambert-St Louis
Spirit Airlines
Non-Stop
LAS
Las Vegas McCarran
LAS
Las Vegas McCarran
Spirit Airlines
Non-Stop
STL
Lambert-St Louis
13 Nov - 16 Nov
$60pp
STL
Lambert-St Louis
Spirit Airlines
Non-Stop
LAS
Las Vegas McCarran
LAS
Las Vegas McCarran
Spirit Airlines
Non-Stop
STL
Lambert-St Louis

Non-stop flights to Las Vegas from St. Louis

Save time with St. Louis to Las Vegas direct flight deals
13 Oct - 16 Oct
$47pp
STL
Lambert-St Louis
Spirit Airlines
Non-Stop
LAS
Las Vegas McCarran
LAS
Las Vegas McCarran
Spirit Airlines
Non-Stop
STL
Lambert-St Louis
9 Oct - 12 Oct
$57pp
STL
Lambert-St Louis
Spirit Airlines
Non-Stop
LAS
Las Vegas McCarran
LAS
Las Vegas McCarran
Spirit Airlines
Non-Stop
STL
Lambert-St Louis
13 Nov - 16 Nov
$60pp
STL
Lambert-St Louis
Spirit Airlines
Non-Stop
LAS
Las Vegas McCarran
LAS
Las Vegas McCarran
Spirit Airlines
Non-Stop
STL
Lambert-St Louis

Last minute flights from St. Louis to Las Vegas

Late deals on round-trip flights to Las Vegas from St. Louis, departing today and this week
27 Sep - 30 Sep
$57pp
STL
Lambert-St Louis
Spirit Airlines
Non-Stop
LAS
Las Vegas McCarran
LAS
Las Vegas McCarran
Spirit Airlines
Non-Stop
STL
Lambert-St Louis
22 Sep - 25 Sep
$70pp
STL
Lambert-St Louis
Spirit Airlines
Non-Stop
LAS
Las Vegas McCarran
LAS
Las Vegas McCarran
Spirit Airlines
Non-Stop
STL
Lambert-St Louis
22 Sep - 29 Sep
$73pp
STL
Lambert-St Louis
Frontier
Non-Stop
LAS
Las Vegas McCarran
LAS
Las Vegas McCarran
Frontier
Non-Stop
STL
Lambert-St Louis

One-way flights to McCarran from St. Louis

The cheapest one-way flights from St. Louis to Las Vegas
2:00 pm - 3:40 pm
Sun Country Air
Nonstop
3h 40m
STL - LAS
Sun Country Air
$43
Booking.com
7:22 am - 4:25 pm
Frontier
1 Stop
11h 03m
STL - LAS
Frontier
$64
Flights by SU
6:45 am - 1:08 pm
Spirit Airlines
2 Stops
32h 23m
STL - LAS
Spirit Airlines
$66
FareScan

Related info for your journey

Useful info, stats and facts about <span class="emphasized">St. Louis</span> to <span class="emphasized">Las Vegas</span> flights.

Flight FAQs

From St. Louis to Las Vegas

What airports do I use to fly from St. Louis to Las Vegas?

If you book a flight from St. Louis to Las Vegas, you will be flying from Lambert-St Louis to McCarran. Flights to Las Vegas McCarran (LAS) from Lambert-St Louis (STL) take 3h 14m for a nonstop flight. There are 6 flights from Lambert-St Louis to Las Vegas per day from 8 airlines.

Which airlines flying from Lambert-St Louis to Las Vegas McCarran have flexible cancellations due to COVID-19?

Some of the carriers operating flights from Lambert-St Louis to Las Vegas McCarran that may be offering flexible cancellation policies are Frontier, Sun Country Air, and American Airlines. Our site will let you filter for all airlines offering greater flexibility due to COVID-19.

Are flight prices decreasing from St. Louis to Las Vegas due to COVID-19 (coronavirus)?

At this time, Cheapflights has noticed price decreases for many domestic flights due to COVID-19. Travel is not necessarily recommended at this time, and flights may be prone to cancellation: please check with local authorities in both St. Louis and Las Vegas for travel alerts, and be sure to review the airline's cancellation policy and travel advisories before booking. For more information, please view our post on what to know about COVID-19 (coronavirus) and travel.

Can I find flights from St. Louis to Las Vegas for under $100 on Cheapflights?

Yes, there are multiple flights from St. Louis to Las Vegas for under $100. The cheapest flight booked recently is on Spirit Airlines for just $47, but on average you can expect to pay $75.

Are there nonstop flights from St. Louis to Las Vegas for under $100 on Cheapflights?

Cheapflights has at least 20 direct flights from St. Louis to Las Vegas under $100. A good price for a nonstop flight from St. Louis to Las Vegas is less than $76.

Are there last-minute flights available from St. Louis to Las Vegas for under $100?

There are currently 20+ open flights from St. Louis to Las Vegas within the next 7 days for less than $100.

What days are nonstop flights available from St. Louis to Las Vegas?

Nonstop flights are available for this route on the following days: Wednesday.

How popular is this St. Louis to Las Vegas flight route?

The Lambert-St Louis to Las Vegas McCarran flight path was viewed by 1,161 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

How many flights depart from St. Louis to Las Vegas on average per day?

On average, you can expect to see 1 flight from St. Louis to Las Vegas a day.
Evening (6pm - Midnight) - 100% of flight departures

How long is the flight from St. Louis to Las Vegas?

Spirit Airlines and Frontier can get you from St. Louis to Las Vegas in just under 3h 28m. Your travel time will be generally consistent. The distance from St. Louis to Las Vegas is about 1375 mi. Most flights are nonstop.

What are the cheapest airlines flying from St. Louis to Las Vegas round-trip?

Currently priced at $47, Spirit Airlines will fly you from St. Louis to Las Vegas and back. In addition to Spirit Airlines, many other airlines offer competitively priced options for your trip. Check Cheapflights for deals on Frontier for as low as $79. These flights start at 73% lower than the current average price 3 months from now.

What are the cheapest airlines to fly from St. Louis to Las Vegas one-way?

To fly one-way, consider booking your trip with Spirit Airlines, which is currently one of the cheapest options available, starting at $22. Frontier flights start at $39 while deals on Sun Country Air start at $43 one-way.

COVID Restrictions

View COVID Travel Restrictions for Las Vegas, NV

Do I need a COVID test to fly to Las Vegas from St. Louis?

Information is based on travel restrictions for travel to Las Vegas McCarran within the United States

Most visitors from Lambert-St Louis need to provide a negative COVID-19 test result and/or quarantine to enter Las Vegas McCarran.

COVID-19 testing requirements
Visitors from Lambert-St Louis must present a negative RT-PCR (NAAT) or Antigen (quick-test) test taken 72 hours before departing to Las Vegas McCarran.

Quarantine requirements
Visitors from Lambert-St Louis are not required to quarantine after entering Las Vegas McCarran.

Do I need a test to fly back to St. Louis from Las Vegas?

Returning to Lambert-St Louis from Las Vegas McCarran

COVID-19 testing requirements
Visitors from Las Vegas McCarran must present a negative RT-PCR (NAAT) or Antigen (quick-test) test taken 72 hours before departing to Lambert-St Louis.

Quarantine requirements
Visitors from Las Vegas McCarran are not required to quarantine after entering Lambert-St Louis.

Hide COVID Travel Restrictions for Las Vegas, NV

Alternative routes for St. Louis to Las Vegas

See prices for flight routes from nearby airports that may be better suited for you.

Destination information for Las Vegas

Things to know before you go - useful duration and weather info for your trip from St. Louis to Las Vegas.
Flight duration from STL to LAS
3h 22m
Average temperature for September in Las Vegas
96.8 °F
Avg rainfall for September in Las Vegas
0.3 ″

Airports servicing St. Louis

Airports servicing Las Vegas

Top 7 airlines flying from Lambert-St Louis to Las Vegas McCarran

The chart below displays the airlines Cheapflights users traveling from St. Louis to Las Vegas choose most often. Cheapest and average prices are based on aggregated data from the past 12 months.
Airline Cheapest Average Flexibility On-time COVID-19 safety
Sun Country Air
$58 $149 No cancel fee 83%
Frontier
$77 $189 No cancel fee 62%
United Airlines
$67 $215 No cancel fee 69%
Allegiant Air
$150 $244 No cancel fee 88%
American Airlines
$120 $275 No cancel fee 71%
Delta
$127 $302 No cancel fee N/A
Southwest
$184 $470 No cancel fee 63%

Hourly flight availability from St. Louis to Las Vegas

See what time of day planes typically take off from St. Louis towards Las Vegas.
Afternoon Noon to 6 PM 58% of STL to LAS departures
Morning 6 AM to noon 30% of STL to LAS departures
Evening 6 PM to midnight 7% of STL to LAS departures
Early morning Midnight to 6 AM 5% of STL to LAS departures
Midnight
6 AM
Noon
6 PM
Weekly flight availability
from St. Louis to Las Vegas
See how many times per day planes take to the skies headed from St. Louis to Las Vegas.
Sunday
2 daily flights
Monday
10 daily flights
Tuesday
2 daily flights
Wednesday
2 daily flights
Thursday
9 daily flights
Friday
11 daily flights
Saturday
10 daily flights
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