Cheap Flights From Lambert-St. Louis Intl. (STL) To Harry Reid Intl. (LAS)

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

The cheapest flights to Harry Reid Intl. found within the past 7 days were CA $273 round trip and CA $128 one way. Prices and availability subject to change. Additional terms may apply.

Fri, Aug. 22 - Sun, Aug. 24
STL
St. Louis
LAS
Las Vegas
CA $273 Roundtrip, found 5 days ago
CA $273
Roundtrip
found 5 days ago
Select Spirit Airlines flight, departing Fri, Aug. 22 from St. Louis to Las Vegas, returning Sun, Aug. 24, priced at CA $273 found 5 days ago
Fri, Oct. 24 - Sun, Oct. 26
STL
St. Louis
LAS
Las Vegas
CA $306 Roundtrip, found 3 days ago
CA $306
Roundtrip
found 3 days ago
Select Spirit Airlines flight, departing Fri, Oct. 24 from St. Louis to Las Vegas, returning Sun, Oct. 26, priced at CA $306 found 3 days ago
Fri, Oct. 24 - Sun, Oct. 26
STL
St. Louis
LAS
Las Vegas
CA $546 Roundtrip, found 3 days ago
CA $546
Roundtrip
found 3 days ago
Select Alaska Airlines flight, departing Fri, Oct. 24 from St. Louis to Las Vegas, returning Sun, Oct. 26, priced at CA $546 found 3 days ago
Fri, Oct. 24 - Sun, Oct. 26
STL
St. Louis
LAS
Las Vegas
CA $560 Roundtrip, found 3 days ago
CA $560
Roundtrip
found 3 days ago
Select Spirit Airlines flight, departing Fri, Oct. 24 from St. Louis to Las Vegas, returning Sun, Oct. 26, priced at CA $560 found 3 days ago
Fri, Oct. 24 - Sun, Oct. 26
STL
St. Louis
LAS
Las Vegas
CA $567 Roundtrip, found 3 days ago
CA $567
Roundtrip
found 3 days ago
Select Spirit Airlines flight, departing Fri, Oct. 24 from St. Louis to Las Vegas, returning Sun, Oct. 26, priced at CA $567 found 3 days ago
Fri, Aug. 22 - Sun, Aug. 24
STL
St. Louis
LAS
Las Vegas
CA $568 Roundtrip, found 5 days ago
CA $568
Roundtrip
found 5 days ago
Select Spirit Airlines flight, departing Fri, Aug. 22 from St. Louis to Las Vegas, returning Sun, Aug. 24, priced at CA $568 found 5 days ago
Fri, Aug. 22 - Sun, Aug. 24
STL
St. Louis
LAS
Las Vegas
CA $572 Roundtrip, found 5 days ago
CA $572
Roundtrip
found 5 days ago
Select Alaska Airlines flight, departing Fri, Aug. 22 from St. Louis to Las Vegas, returning Sun, Aug. 24, priced at CA $572 found 5 days ago
Fri, Oct. 24 - Sun, Oct. 26
STL
St. Louis
LAS
Las Vegas
CA $580 Roundtrip, found 3 days ago
CA $580
Roundtrip
found 3 days ago
Select Alaska Airlines flight, departing Fri, Oct. 24 from St. Louis to Las Vegas, returning Sun, Oct. 26, priced at CA $580 found 3 days ago
Fri, Oct. 24 - Sun, Oct. 26
STL
St. Louis
LAS
Las Vegas
CA $587 Roundtrip, found 3 days ago
CA $587
Roundtrip
found 3 days ago
Select Alaska Airlines flight, departing Fri, Oct. 24 from St. Louis to Las Vegas, returning Sun, Oct. 26, priced at CA $587 found 3 days ago
Fri, Oct. 24 - Sun, Oct. 26
STL
St. Louis
LAS
Las Vegas
CA $589 Roundtrip, found 3 days ago
CA $589
Roundtrip
found 3 days ago
Select Alaska Airlines flight, departing Fri, Oct. 24 from St. Louis to Las Vegas, returning Sun, Oct. 26, priced at CA $589 found 3 days ago

Frequently asked questions

Are there direct flights from Lambert-St. Louis Intl. Airport (STL) to LAS?
Southwest Airlines and Frontier Airlines are among the airlines that provide nonstop flights from STL to McCarran Intl. Airport (LAS). If you're itching to get to where you're headed fast, these are your best options.
What airlines fly from STL to McCarran Intl. Airport (LAS)?
With good range of airlines operating nonstop flights from Lambert Field to LAS, you'll easily find one that ticks all your boxes. Here are some of the most well-liked air carriers:

  • Southwest Airlines - (WN) with 95 flights every month
  • Frontier Airlines - (F9) with 43 flights every month
  • Spirit Airlines - (NK) with 30 flights every month
  • Sun Country Airlines - (SY) with 4 flights every month

What is the best day to buy a plane ticket?
Airfares offered on Friday tend to be the cheapest, according to flight demand on Travelocity.ca in 2021. Purchasing your airfares on a Thursday or Saturday can also provide better value, however our advice if you're looking to save money is to avoid booking on a Wednesday or Sunday. Our data shows that those two days have the highest ticket values on average, so keep this in mind if you're browsing flight deals.
What are the cheapest days to fly?
Frequent travellers may already know this, but earlier in the week is often the cheapest time to fly. Flights departing on a Monday are the cheapest of the week. Since flights towards the middle of the week tend to be more popular, this causes the prices to rise. This is why, on average, airfares booked on Travelocity.ca in 2021 were most expensive for Wednesday departures.
How far in advance can you book a flight?
Here's the deal: It is typically possible to start comparing international airfares on Travelocity.ca up to 12 months in advance. However, it does depend on the carrier as not all airlines release their prices that far out. According to our 2021 flight demand trends, last minute planners can still bag a bargain with some of the cheapest fares appearing 2-4 weeks prior to their travel dates.*According to flight demand on Travelocity.ca from January to December 2021. Savings are subject to change and may vary depending on selections made.