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

View AU$228 flight on Sat, 17 May 2025Opens in a new window

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

Prices were available within the past 7 days for one-way flights and round trip tickets for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Thu., 8 May - Thu., 15 May
STL
St. Louis
LAS
Las Vegas
AU$566 Return, found 3 days ago
AU$566
Return
found 3 days ago
Select American Airlines flight, departing Thu., 8 May from St. Louis to Las Vegas, returning Thu., 15 May, priced at AU$566 found 3 days ago
Delta
Thu., 8 May - Thu., 15 May
STL
St. Louis
LAS
Las Vegas
AU$566 Return, found 3 days ago
AU$566
Return
found 3 days ago
Select Delta flight, departing Thu., 8 May from St. Louis to Las Vegas, returning Thu., 15 May, priced at AU$566 found 3 days ago
American Airlines
Thu., 8 May - Thu., 15 May
STL
St. Louis
LAS
Las Vegas
AU$597 Return, found 3 days ago
AU$597
Return
found 3 days ago
Select American Airlines flight, departing Thu., 8 May from St. Louis to Las Vegas, returning Thu., 15 May, priced at AU$597 found 3 days ago
Delta
Thu., 8 May - Thu., 15 May
STL
St. Louis
LAS
Las Vegas
AU$645 Return, found 3 days ago
AU$645
Return
found 3 days ago
Select Delta flight, departing Thu., 8 May from St. Louis to Las Vegas, returning Thu., 15 May, priced at AU$645 found 3 days ago
Delta
Thu., 8 May - Thu., 15 May
STL
St. Louis
LAS
Las Vegas
AU$652 Return, found 3 days ago
AU$652
Return
found 3 days ago
Select Delta flight, departing Thu., 8 May from St. Louis to Las Vegas, returning Thu., 15 May, priced at AU$652 found 3 days ago
American Airlines
Thu., 8 May - Thu., 15 May
STL
St. Louis
LAS
Las Vegas
AU$653 Return, found 3 days ago
AU$653
Return
found 3 days ago
Select American Airlines flight, departing Thu., 8 May from St. Louis to Las Vegas, returning Thu., 15 May, priced at AU$653 found 3 days ago
American Airlines
Thu., 8 May - Thu., 15 May
STL
St. Louis
LAS
Las Vegas
AU$676 Return, found 3 days ago
AU$676
Return
found 3 days ago
Select American Airlines flight, departing Thu., 8 May from St. Louis to Las Vegas, returning Thu., 15 May, priced at AU$676 found 3 days ago
American Airlines
Thu., 8 May - Thu., 15 May
STL
St. Louis
LAS
Las Vegas
AU$685 Return, found 3 days ago
AU$685
Return
found 3 days ago
Select American Airlines flight, departing Thu., 8 May from St. Louis to Las Vegas, returning Thu., 15 May, priced at AU$685 found 3 days ago
Alaska Airlines
Thu., 8 May - Thu., 15 May
STL
St. Louis
LAS
Las Vegas
AU$706 Return, found 3 days ago
AU$706
Return
found 3 days ago
Select Alaska Airlines flight, departing Thu., 8 May from St. Louis to Las Vegas, returning Thu., 15 May, priced at AU$706 found 3 days ago
United
Thu., 8 May - Thu., 15 May
STL
St. Louis
LAS
Las Vegas
AU$716 Return, found 3 days ago
AU$716
Return
found 3 days ago
Select United flight, departing Thu., 8 May from St. Louis to Las Vegas, returning Thu., 15 May, priced at AU$716 found 3 days ago
Flight from St. Louis to Las Vegas route information
Origin airport
Lambert-St. Louis Intl.
Destination airport
Harry Reid Intl.
Return price
AU$566
Distance
2188 km

Your quick guide to flights from St. Louis to Las Vegas

Pick up great flights from St. Louis to Las Vegas

With Expedia, you have your pick of 9 flights a day with 20 airlines covering flights from St. Louis to Las Vegas. Whether you’re on a business trip, a family holiday or a luxury break, just enter your travel dates, hit search then check out your choice of flights. Select from return, one way or multi-city flights, and use the advance search tool if you want a direct or refundable flight. You can narrow your search to show you just your preferred cabin class and airline, too. It’s all easy. You can book direct flights from St. Louis to Las Vegas that take around 3 hours.

Find cheap flights from St. Louis to Las Vegas

From the great flight deals with prices currently ranging from AU$566 to AU$716, you can choose to see the cheapest flights first. Generally, you can book the cheapest flights from St. Louis to Las Vegas around 4 to 6 weeks in advance. If your travel dates are flexible, try to avoid weekends and peak seasons – when you are more likely to grab the lowest prices. Even last minute, there are some impressive deals. The cheapest time to fly to Las Vegas is normally in May.

Reasons to book your flight from St. Louis to Las Vegas with Expedia

Expedia makes it easy to find, book, and travel, with everything you need all in one place. When you enter your travel details, find fantastic deals just for you on flight tickets from St. Louis to Las Vegas across all the main airline carriers, so you can save time, dollars, and hassle finding the perfect flight. If you think your plans could change, choose refundable flights so any changes won’t cost you more. Book your flight to Las Vegas right now and, if you join Expedia Rewards, you earn points this time and every time you travel with Expedia.

Frequently asked questions

How much is a flight from Lambert Field to Harry Reid Airport (formerly McCarran Airport)?
Based on fares listed within the last 7 days on Expedia for flights departing within the next year, round-trip journeys between St. Louis Lambert International Airport and Harry Reid Airport (formerly McCarran Airport) start from AU$566. Book today to secure the best price for your trip. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from St. Louis Lambert International Airport to Harry Reid Airport (formerly McCarran Airport)?
Most flights can be cancelled online, but each air carrier has a different set of terms and conditions. If you do have to cancel your flight, visit our Customer Service Portal and follow the instructions.
How do I find cheap flights from St. Louis Lambert International Airport to LAS that have flexible change policies?
Many airlines offer the option to reschedule your flight without a change fee. All you pay is the difference between the original flight and the new flight. When you’re searching for St. Louis Lambert International Airport to Harry Reid Airport (formerly McCarran Airport) flights, you’ll see a “no change fees” filter for you to select.
How far is the flight from Lambert Field to Harry Reid Airport (formerly McCarran Airport)?
It’s around 2 200 kilometres between Lambert Field and LAS, so you’ll be flying for a while. Keep yourself entertained with things like crossword puzzles or a good old-fashioned book.
Which airlines fly direct from Lambert Field to Harry Reid Airport (formerly McCarran Airport)?
There are several airlines that fly from STL to Harry Reid Airport (formerly McCarran Airport). Southwest Airlines (WN) is a popular option, offering 108 flights on this route each month. Offering 39 flights a month on this route, Frontier Airlines (F9) is another good option.
Are St. Louis Lambert International Airport to Harry Reid Airport (formerly McCarran Airport) flight tickets cheaper when they're purchased at the last minute?
Late planners can occasionally find a bargain, with some of the cheapest airfares from STL to LAS emerging a few weeks before the departure date. If you’d rather plan ahead of time, Expedia compares and updates all the best flight deals continuously — as early as 12 months in advance in some cases. It does depend on the carrier though, as not all airlines publish prices so far in advance.

Explore a world of travel with Expedia

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