CA $138 Cheap Flights from St. Louis (STL) to Las Vegas (LAS)

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

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

Prices were available within the past 7 days and start at CA $138 for one-way flights and CA $341 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Delta
American Airlines
Delta
Delta
American Airlines
American Airlines
American Airlines
Alaska Airlines
Delta

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

August is typically the cheapest month to fly

From CA $96 - CA $307 per traveller.

Graph displaying average flight prices per month

Flight from St. Louis to Las Vegas (STL - LAS) route information
Origin airport
Lambert-St. Louis Intl.
Destination airport
Harry Reid Intl.
Airlines serving
Alaska Airlines, Spirit Airlines
Roundtrip price
CA $283
Distance
2188 km
Average flight time
1 hour 28 mins

St. Louis to Las Vegas Flights

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

With Expedia, it’s simple to find and book flights to Las Vegas from St. Louis 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 Southwest Airlines nonstop flights to Harry Reid 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 St. Louis to Las Vegas today, tomorrow, or this week.  

 

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

Sort your search results by price to find great deals on your flight from St. Louis to Las Vegas—you get all your cheapest options first. Grab yourself a bargain now—the lowest price on flights to Las Vegas from St. Louis currently is just CA $341 rising to CA $448.  

Here are more money-saving tips: 

  • Fly in October when flight prices are normally at their lowest 
  • Book about a month to 6 weeks before you travel for the best prices to Las Vegas  
  • 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 Las Vegas from St. Louis 

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 Las Vegas with Expedia today.

Frequently asked questions

How much is a flight from Lambert Field to LAS?
Within the past 7 days on Expedia, for flights departing within the next year, the lowest price listed for a round-trip flight between STL and Harry Reid Intl. Airport (LAS) was CA $341. Cheap tickets don't wait forever, so book yours today. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from Lambert-St. Louis Intl. Airport (STL) to Harry Reid Airport (formerly McCarran Airport)?
Every air carrier has its own set of terms and conditions. If you do decide to cancel, follow the simple instructions on our Customer Service Portal.
How do I find cheap flights from Lambert-St. Louis Intl. Airport (STL) to Harry Reid Airport (formerly McCarran Airport) that have flexible change policies?
Flights from Lambert-St. Louis Intl. Airport (STL) to Harry Reid Airport (formerly McCarran Airport) offering flexible change policies are available with many carriers. Simply use our "No change fees" filter during your search. You'll only need to pay the fare difference, without any added fees to worry about.
How many hours is the flight from STL to Harry Reid Airport (formerly McCarran Airport)?
The flight time from Lambert-St. Louis Intl. Airport (STL) to LAS is roughly 3 hours and 49 minutes. Put your headphones on, listen to your favourite tunes and your time in the air will whiz by.
How far is the flight from Lambert-St. Louis Intl. Airport (STL) to Harry Reid Airport (formerly McCarran Airport)?
It's around 2,200 kilometres from STL to LAS, so you'll be in your seat for a while. Keep yourself occupied with things like playing cards (if you're travelling with friends) or a thrilling novel.
Which airlines fly direct from Lambert-St. Louis Intl. Airport (STL) to Harry Reid Airport (formerly McCarran Airport)?
Southwest Airlines (WN) is the number one choice for many travellers. It offers 134 flights from Lambert-St. Louis Intl. Airport (STL) to Harry Reid Airport (formerly McCarran Airport) each month. Offering 17 flights every month on this route, Frontier Airlines (F9) is another top pick.
Are Lambert Field to Harry Reid Intl. Airport (LAS) flight tickets cheaper when they're purchased at the last minute?
Fares from Lambert-St. Louis Intl. Airport (STL) to LAS are available up to a year prior to departure on Expedia. And although you may score a great last-minute deal, it's not something you should count on. Also, booking your flights well in advance means you'll have more options — and you can avoid ending up with the dreaded middle seat! We regularly update our fares to bring you the biggest bargains, so check back often for all the latest specials.

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