Find flights
Deals
When to book
FAQs

Cheap flights from St. Louis to Las Vegas from C$ 244

STL — LAS
10 Oct — 17 Oct1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from St. Louis to Las Vegas

Enter your travel dates to find the best prices.

Cheapest flights from St. Louis to Las Vegas

Sat 26/98:10 p.m. -
1 stop16h 36m
Tue 29/910:04 p.m. -
1 stop13h 06m
Deal found 6/9C$ 338
Sat 17/107:45 a.m. -
2 stops13h 15m
Wed 21/106:00 a.m. -
2 stops9h 44m
Deal found 7/9C$ 487
Fri 23/102:22 p.m. -
2 stops10h 00m
Wed 28/106:00 a.m. -
2 stops9h 44m
Deal found 6/9C$ 494
Mon 26/102:22 p.m. -
2 stops10h 00m
Thu 29/106:00 a.m. -
2 stops9h 44m
Deal found 8/9C$ 500
Sat 17/107:45 a.m. -
2 stops13h 15m
Tue 20/106:00 a.m. -
2 stops9h 44m
Deal found 6/9C$ 514

Find flight deals from St. Louis to Las Vegas

Round-trip from

C$ 335

One-way from

C$ 244

Popular in

June

Cheapest in

January

Average price

C$ 485
Frontier
  • Frontier
  • 26/9-29/9
  • 2 total stops
  • 18h 40m total
  • St. Louis to Las Vegas
Search Deals
Delta
  • Delta
  • 21/10-31/12
  • 2 total stops
  • 10h 00m total
  • St. Louis to Las Vegas
Search Deals
Highest demand for flights based on searches. 12% potential increase in price (C$ 85 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (C$ 14 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in September 2026
Search Deals

Cheapflights Fare Finder

 
Use the filters below to find and compare flights from St. Louis to Las Vegas that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisLas Vegas

STL Lambert-St Louis - LAS Las Vegas Harry Reid Intl

STLLAS

Lambert-St Louis

Tue 9/3

6:30 a.m.-2:38 p.m.

2 stops10h 08m

Las Vegas Harry Reid Intl

Wed 31/12

12:00 a.m.-2:00 a.m.

Nonstop0h 00m

C$ 244

St. LouisLas Vegas

STL Lambert-St Louis - LAS Las Vegas Harry Reid Intl

STLLAS

Lambert-St Louis

Wed 3/3

7:30 a.m.-6:46 p.m.

2 stops13h 16m

Las Vegas Harry Reid Intl

Wed 31/12

12:00 a.m.-2:00 a.m.

Nonstop0h 00m

C$ 258

St. LouisLas Vegas

STL Lambert-St Louis - LAS Las Vegas Harry Reid Intl

STLLAS

Lambert-St Louis

Wed 11/11

5:05 a.m.-6:50 a.m.

Nonstop3h 45m

Las Vegas Harry Reid Intl

Wed 31/12

12:00 a.m.-2:00 a.m.

Nonstop0h 00m

C$ 261
Quickest round-trip

St. LouisLas Vegas

STL Lambert-St Louis - LAS Las Vegas Harry Reid Intl

STLLAS

Lambert-St Louis

Wed 21/10

5:20 a.m.-7:00 a.m.

Nonstop3h 40m

Las Vegas Harry Reid Intl

Wed 31/12

12:00 a.m.-2:00 a.m.

Nonstop0h 00m

C$ 261

St. LouisLas Vegas

STL Lambert-St Louis - LAS Las Vegas Harry Reid Intl

STLLAS

Lambert-St Louis

Fri 11/12

2:28 p.m.-10:45 p.m.

2 stops10h 17m

Las Vegas Harry Reid Intl

Wed 31/12

12:00 a.m.-2:00 a.m.

Nonstop0h 00m

C$ 265

St. LouisLas Vegas

STL Lambert-St Louis - LAS Las Vegas Harry Reid Intl

STLLAS

Lambert-St Louis

Fri 15/1

2:15 p.m.-10:48 p.m.

2 stops10h 33m

Las Vegas Harry Reid Intl

Wed 31/12

12:00 a.m.-2:00 a.m.

Nonstop0h 00m

C$ 265

St. LouisLas Vegas

STL Lambert-St Louis - LAS Las Vegas Harry Reid Intl

STLLAS

Lambert-St Louis

Tue 10/11

12:40 p.m.-3:30 p.m.

1 stop4h 50m

Las Vegas Harry Reid Intl

Wed 31/12

12:00 a.m.-2:00 a.m.

Nonstop0h 00m

C$ 267

St. LouisLas Vegas

STL Lambert-St Louis - LAS Las Vegas Harry Reid Intl

STLLAS

Lambert-St Louis

Tue 6/10

5:35 p.m.-11:35 p.m.

1 stop8h 00m

Las Vegas Harry Reid Intl

Wed 31/12

12:00 a.m.-2:00 a.m.

Nonstop0h 00m

C$ 274

St. LouisLas Vegas

STL Lambert-St Louis - LAS Las Vegas Harry Reid Intl

STLLAS

Lambert-St Louis

Mon 5/10

6:00 a.m.-9:55 a.m.

1 stop5h 55m

Las Vegas Harry Reid Intl

Wed 31/12

12:00 a.m.-2:00 a.m.

Nonstop0h 00m

C$ 280

St. LouisLas Vegas

STL Lambert-St Louis - LAS Las Vegas Harry Reid Intl

STLLAS

Lambert-St Louis

Tue 2/3

7:00 a.m.-1:20 p.m.

1 stop8h 20m

Las Vegas Harry Reid Intl

Wed 31/12

12:00 a.m.-2:00 a.m.

Nonstop0h 00m

C$ 287

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/9

Showing 1-10 of 22 resultsSorted by cheapest first
1
2
3

Best time to book a flight from St. Louis to Las Vegas

Have a flexible travel schedule? Discover the best time to fly to Las Vegas from St. Louis with our price prediction graph.
Estimated round-trip price

Cheapflights Insights

Everything you need to know about your flight from St. Louis to Las Vegas

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

To ensure you get the cheapest price possible for a flight from St. Louis to Las Vegas, you should look to book at least 44 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

What is the cheapest month to book a flight from St. Louis to Las Vegas?

Currently, January is the cheapest month in which you can book a flight from St. Louis to Las Vegas (average of C$ 346). Flying from St. Louis to Las Vegas in June is currently the most expensive (average of C$ 538). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from STL to LAS?

When flying from St. Louis to Las Vegas, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

How much does it cost to fly round-trip from St. Louis to Las Vegas?

Airfare is below average for this route at the moment.

St. Louis to Las Vegas flights typically cost between C$ 341 and C$ 658 in September.
The cheapest round-trip price found within the last 5 days was C$ 335 on Frontier (26 Sep-29 Sep).

Related info for your journey

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

    A quick flight from St. Louis to Las Vegas can take about 5h 15m. Delta provides one of the quickest options available for as low as C$ 569. There are 2200 km between St. Louis and Las Vegas. This flight may include one or multiple stops.

  • What are the most reliable airlines from St. Louis to Las Vegas?

    The top 3 most reliable airlines when flying from St. Louis to Las Vegas are Volaris (83%), Frontier (80%) and Southwest (62%).

  • Can I find deals for flights from St. Louis to Las Vegas that include hotel bookings?

    Yes. In addition to deals on St. Louis to Las Vegas flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from St. Louis to Las Vegas?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from St. Louis to Las Vegas.

  • Can I find deals for business class flights from St. Louis to Las Vegas?

    Yes. Cheapflights offers flight deals from St. Louis to Las Vegas by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from St. Louis to Las Vegas?

    Currently, January is the cheapest month in which you can book a flight from St. Louis to Las Vegas (average of C$ 346). Flying from St. Louis to Las Vegas in June is currently the most expensive (average of C$ 538). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Travelling to a place near Las Vegas?

Book flights to Las Vegas if you plan to visit one of these locations
Paradise
Kingman
North Las Vegas
Henderson

Browse thousands of different options on Cheapflights for your next trip

Fly with Cheapflights

How does Cheapflights help users find flights from St. Louis to Las Vegas?

Cheapflights helps you search for flights from St. Louis to Las Vegas via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

Why should you use Cheapflights to find cheap flight tickets from St. Louis to Las Vegas?

Millions of users choose and trust Cheapflights to book the best flight deals from St. Louis to Las Vegas for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

Can Cheapflights find flights from St. Louis to Las Vegas with no change fees?

Yes, we can. To see specific flights from St. Louis to Las Vegas with no change fees, users can toggle flexible booking options after using the search form above to find flights.

Can Cheapflights notify me if prices for flights from St. Louis to Las Vegas become cheaper?

Not ready to book yet? You can track prices for flights from St. Louis to Las Vegas on Cheapflights with our Price Alert feature and get notified when better prices are available.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.