Cheap flights from St. Louis to Las Vegas

Flights overview

Useful information for finding cheap flights from St. Louis to Las Vegas and booking your next trip
Cheapest round-trip flights $148
Frontier Nonstop 4 hr Thu, Mar 5 — Mon, Mar 9
The cheapest round-trip flight from St. Louis to Las Vegas is currently $148
Cheapest one-way flight $64
Frontier Nonstop 4 hr Wed, Mar 25
The cheapest one-way flight from St. Louis to Las Vegas is currently $64
Last-minute weekend getaway $381
Frontier 1 stop 26 hr Sat, Feb 14 — Mon, Feb 16
The cheapest last-minute weekend getaway from St. Louis to Las Vegas is currently $381
Cheapest business class flights $402
Frontier Nonstop 4 hr Thu, Apr 16 — Mon, Apr 20
The cheapest business class round-trip flight from St. Louis to Las Vegas is currently $402
Fastest flight 3 hr 30 min The fastest nonstop flight from St. Louis to Las Vegas takes 3 hr 30 min
Nonstop flights Every day There are direct flights on this route every day.

When is the cheapest time to fly?

The cheapest month to fly from St. Louis to Las Vegas is typically December. The most expensive month to fly is typically July.
December
Cheapest
Typical prices: $135–300
July
Most expensive
Typical prices: $235–365

Popular airlines from St. Louis to Las Vegas

  • Southwest
    Nonstop
    from $299
    Typical price: $310–600
    30 weekly nonstop flights
    STL - LAS Every day
    1389 weekly connecting flights
    STL - LAS Every day
  • American
    from $201
    Typical price: $290–560
    364 weekly connecting flights
    STL - LAS Every day
  • United
    from $219
    Typical price: $290–620
    319 weekly connecting flights
    STL - LAS Every day
  • Frontier
    Nonstop
    from $148
    Typical price: $150–350
    5 weekly nonstop flights
    STL - LAS Every Mon, Thu, Fri, Sat, Sun
    18 weekly connecting flights
    STL - LAS Every day
  • Delta
    from $233
    Typical price: $305–710
    227 weekly connecting flights
    STL - LAS Every day
  • Alaska
    from $394
    Typical price: $400–850
    21 weekly connecting flights
    STL - LAS Every day

Popular airports near St. Louis

  • St. Louis Lambert International Airport (STL)
    St. Louis United States 21 min 12 mi
  • General Wayne A. Downing Peoria International Airport (PIA)
    Peoria United States 2 hr 35 min 143 mi
  • Columbia Regional Airport (COU)
    Columbia United States 2 hr 6 min 109 mi
  • Indianapolis International Airport (IND)
    Indianapolis United States 3 hr 29 min 222 mi

Popular airports near Las Vegas

  • Harry Reid International Airport (LAS)
    Las Vegas United States 16 min 6 mi
  • St. George Regional Airport (SGU) (SGU)
    St. George United States 1 hr 52 min 108 mi
  • Boulder City Municipal Airport (BLD)
    Boulder City United States 26 min 22 mi
  • Ontario International Airport (ONT)
    Ontario United States 3 hr 32 min 201 mi

Frequently asked questions about flying from St. Louis to Las Vegas

The cheapest flights from St. Louis to Las Vegas are usually in December. Typical ticket prices in December range from $135 to $300.
The cheapest round-trip flight from St. Louis to Las Vegas recently found on Google Flights was with Frontier from $148. The cheapest one-way flight was with Frontier from $64.

Some of the cheapest round-trip deals we found with different airlines:
  • The cheapest Southwest flight from St. Louis to Las Vegas is $299, flying from May 9 to May 11.
  • The cheapest American flight from St. Louis to Las Vegas is $201, flying from May 9 to May 11.
  • The cheapest United flight from St. Louis to Las Vegas is $219, flying from Apr 18 to Apr 20.
  • The cheapest Frontier flight from St. Louis to Las Vegas is $148, flying from Mar 5 to Mar 9.
  • The cheapest Delta flight from St. Louis to Las Vegas is $233, flying from May 7 to May 10.
  • The cheapest Alaska flight from St. Louis to Las Vegas is $394, flying from Feb 28 to Mar 2.
The cheapest round-trip flight from St. Louis to Las Vegas starts at $148 from Thu, Mar 5 to Mon, Mar 9. The cheapest one-way flight starts at $64 and departs on Wed, Mar 25.
3 hr 30 min is the shortest flight time from St. Louis to Las Vegas.
Las Vegas is a busy year-round destination with a subtropical desert climate. There's no specific peak season, but crowds and prices increase around holidays and the many annual conventions. Popular events include the Consumer Electronic Show (Jan), the Project fashion trade show (Feb and Aug), NASCAR Weekend (Mar), the National Finals Rodeo (Dec), and New Year's Eve. During summer (Jun–Aug), extremely high daytime temperatures may make outdoor activities like golf and canyon hiking inadvisable.
It's easy to use Google Flights to find the cheapest days to fly from St. Louis to Las Vegas.
Just click the Departure label near the top of the page to open the calendar. Choose a start date and a return date to see how the round-trip fare changes on those specific days.
Adjust the trip type to see one-way fares. The cheapest available flights are highlighted and easy to spot. Once you settle on dates, click the Search button to see flight options and book the deal.

You can also turn on price tracking to get alerts if the price changes for a route or flight.
What counts as the best airline for your flights from St. Louis to Las Vegas really depends on your individual needs. You may have a favorite carrier or a loyalty program you like, but price, convenience, and airports served also come into play. Flexibility and booking terms – Can you change flights if you want to stay longer or get a refund if you have to postpone your trip? – are also factors that help determine which airline is best to fly from St. Louis to Las Vegas.

In terms of nonstop flights, Southwest is the most popular. Southwest offers 30 nonstop flights and 1,389 connecting flights per week. Southwest flies from St. Louis Lambert International Airport (STL) to Harry Reid International Airport (LAS) .

Other popular airlines flying from St. Louis to Las Vegas are:
  • American offers 364 connecting flights per week. American flies from St. Louis Lambert International Airport (STL) to Harry Reid International Airport (LAS) .
  • United offers 319 connecting flights per week. United flies from St. Louis Lambert International Airport (STL) to Harry Reid International Airport (LAS) .
  • Frontier offers 5 nonstop flights and 18 connecting flights per week. Frontier flies from St. Louis Lambert International Airport (STL) to Harry Reid International Airport (LAS) .
  • Delta offers 227 connecting flights per week. Delta flies from St. Louis Lambert International Airport (STL) to Harry Reid International Airport (LAS) .
  • Alaska offers 21 connecting flights per week. Alaska flies from St. Louis Lambert International Airport (STL) to Harry Reid International Airport (LAS) .
The number of connecting flights refers to distinct flights with at least one stop between St. Louis and Las Vegas.
The cheapest round-trip flight from St. Louis to Las Vegas recently found on Google Flights was with Frontier from $148. The cheapest one-way flight was with Frontier from $64.

Some of the cheapest round-trip deals we found with different airlines:
  • The cheapest Southwest flight from St. Louis to Las Vegas is $299, flying from May 9 to May 11.
  • The cheapest American flight from St. Louis to Las Vegas is $201, flying from May 9 to May 11.
  • The cheapest United flight from St. Louis to Las Vegas is $219, flying from Apr 18 to Apr 20.
  • The cheapest Frontier flight from St. Louis to Las Vegas is $148, flying from Mar 5 to Mar 9.
  • The cheapest Delta flight from St. Louis to Las Vegas is $233, flying from May 7 to May 10.
  • The cheapest Alaska flight from St. Louis to Las Vegas is $394, flying from Feb 28 to Mar 2.
Southwest and Frontier fly direct from St. Louis to Las Vegas.
  • There are 30 Southwest direct flights from St. Louis to Las Vegas per week. Flights are available every day.
  • There are 5 Frontier direct flights from St. Louis to Las Vegas per week. Flights are available on Monday, Thursday, Friday, Saturday and Sunday.
Use the Stops filter while searching for flights, to see only nonstop options in your results.
The cheapest last-minute deal between St. Louis and Las Vegas at price $381 is offered by Frontier from Sat, Feb 14 to Mon, Feb 16.
Southwest and Frontier fly direct from St. Louis to Las Vegas.
  • There are 30 Southwest direct flights from St. Louis to Las Vegas per week. Flights are available every day.
  • There are 5 Frontier direct flights from St. Louis to Las Vegas per week. Flights are available on Monday, Thursday, Friday, Saturday and Sunday.
Use the Stops filter while searching for flights, to see only nonstop options in your results.
There are direct flights from St. Louis to Las Vegas on a daily basis.
The cheapest direct (nonstop) round-trip flights between St. Louis and Las Vegas start at $148 from Thu, Mar 5 to Mon, Mar 9 with Frontier.
It's easy to find nonstop flights with Google Flights! Once you've searched for flights from St. Louis to Las Vegas, just select the nonstop flights only option in the 'Stops’ filter in the search form and view all available direct flights and their prices.
The cheapest business class round-trip flights between St. Louis and Las Vegas start at $402 from Thu, Apr 16 to Mon, Apr 20 with Frontier.
The cheapest economy class round-trip flights between St. Louis and Las Vegas start at $148 from Thu, Mar 5 to Mon, Mar 9.
To book business class trips from St. Louis to Las Vegas, look for the default Economy selection at the top, and change it to your desired cabin class such as Premium Economy, Business Class, or First Class. You can then select your departure and arrival dates, consider available options, and book your business travel.

You can also adjust the trip type to view one-way fares.
The best last-minute getaway deal for the next weekend between St. Louis and Las Vegas starts at $381 from Sat, Feb 14 to Mon, Feb 16 with Frontier.
The cheapest last-minute deal between St. Louis and Las Vegas at price $381 is offered by Frontier from Sat, Feb 14 to Mon, Feb 16.
To find last-minute flight deals from St. Louis to Las Vegas, start by entering the city names, select the desired departure and return dates, and hit the Search button to view flight options.

You can check for last-minute flights for the same day or adjust the trip type to see one-way fares.

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