CA $124 Cheap Flights from Las Vegas (LAS) to St. Louis (STL)

View CA $124 flight on Sat, Aug. 23, 2025Opens in a new window

Popular airlines from Harry Reid Intl. Airport (LAS) to Lambert-St. Louis International Airport (STL)

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

Prices were available within the past 7 days and start at CA $124 for one-way flights and for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Find the cheapest month to fly from Las Vegas (LAS) to St. Louis (STL)

August is typically the cheapest month to fly

From CA $98 - CA $350 per traveller.

Graph displaying average flight prices per month

Flight from Las Vegas to St. Louis (LAS - STL) route information
Origin airport
Harry Reid Intl.
Destination airport
Lambert-St. Louis Intl.
Distance
2188 km
Average flight time
5 hours 39 mins

Las Vegas to St. Louis Flights

The easy way to book your flights from Las Vegas to St. Louis 

With Expedia, it’s simple to find and book flights to St. Louis from Las Vegas whether you’re traveling for business or pleasure. Enter your travel dates, hit search, and choose your flight from 20 airlines that cover this route. There are nonstop flights to Lambert-St. Louis Intl., too.  

Choose your preferred carrier and cabin class with the advanced search tool and select your ideal departure time. Then, if you want, you can see just nonstop or refundable flights. And if you’re traveling last minute, just enter the date to check out flights from Las Vegas to St. Louis today, tomorrow, or this week.  

 

Save dollars with cheap flights from Harry Reid Intl., LAS to Lambert-St. Louis Intl., STL 

Sort your search results by price to find great deals on your flight from Las Vegas to St. Louis—you get all your cheapest options first. Grab yourself a bargain now—the lowest price on flights to St. Louis from Las Vegas currently is just rising to .  

Here are more money-saving tips: 

  • Fly in when flight prices are normally at their lowest 
  • Book about a month to 6 weeks before you travel for the best prices to St. Louis  
  • Avoid peak season and weekends when flights can cost more
  • Early morning and late-night flights are sometimes cheaper, so try varying your travel times 
  • One surefire way to save money on your flight is to book your flight and hotel together with Expedia. Sometimes, the savings are so large that the flight is basically free! 

 

Reasons to choose Expedia for your flight to St. Louis from Las Vegas 

Whatever your destination, budget, or reason to travel, in just one quick search, you can choose from loads of flights, airlines, and cabin classes. The filters make it quick and easy to find your ideal flights, and if you choose one of the flexible options, you won’t be charged to change your flight. So book your flight to St. Louis with Expedia today.

Frequently asked questions

How much is a flight from Harry Reid Airport (formerly McCarran Airport) to Lambert Field?
Round-trip flights from LAS to Lambert-St. Louis Intl. Airport (STL) start from . This figure is based on fares advertised within the last 7 days on Expedia for flights departing within the next year — book now so you don't miss out. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from Harry Reid Airport (formerly McCarran Airport) to Lambert-St. Louis Intl. Airport (STL)?
Most flights can be conveniently cancelled online, but whether or not you incur a fee depends on your airline. If you do need to cancel your getaway, follow the easy instructions in the Customer Service Portal.
How do I find cheap flights from Harry Reid Intl. Airport (LAS) to Lambert-St. Louis Intl. Airport (STL) that have flexible change policies?
Flights from Harry Reid Intl. Airport (LAS) to Lambert-St. Louis Intl. Airport (STL) offering flexible change policies are available from several carriers. Simply use our "No change fees" filter during your search. You'll only need to pay the difference in ticket price, without any additional fees to worry about.
How many hours is the flight from Harry Reid Intl. Airport (LAS) to STL?
There are plenty of ways to make the 3 hours and 8 minutes between LAS and Lambert-St. Louis Intl. Airport (STL) go by quicker. Be productive and sort through your camera roll or clear out all those unwanted emails. A snooze also helps pass the time!
How far is the flight from Harry Reid Airport (formerly McCarran Airport) to Lambert Field?
You'll be soaring through the sky for a while, as the flight distance between Las Vegas and St. Louis is 2,200 kilometres. Set up a playlist of your favourite songs before leaving home to keep yourself entertained during the flight.
Which airlines fly direct from Harry Reid Airport (formerly McCarran Airport) to Lambert Field?
Southwest Airlines (WN) is one of the top choices for many travellers flying between Harry Reid Airport (formerly McCarran Airport) and STL. Take your pick of the 134 flights it offers on this route each month. After more options? Check out what's available with Frontier Airlines (F9). This carrier offers 17 monthly flights between these airports.
Are Harry Reid Airport (formerly McCarran Airport) to Lambert-St. Louis Intl. Airport (STL) flight tickets cheaper when they're purchased at the last minute?
Flight prices change all the time, so it's no sure thing. While last-minute deals between Harry Reid Airport (formerly McCarran Airport) and Lambert Field are possible, it also makes sense to keep an eye on prices well before you fly. In fact, some carriers publish their prices up to 12 months before the departure date. Expedia is constantly updating the biggest airfare bargains around, so keep checking back and be ready to grab your seat when the price dips.

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