Vuelos de Frontier Airlines de Las Vegas (LAS) a St. Louis (STL) desde $25

It’s prudent to find out about any travel advice reports and quarantine requirements in place in your destination. Ensure you go to the Covid-19 Travel Advisor for up-to-date info on booking a flight to St. Louis Lambert International Airport from LAS.

If you’re flying with Frontier Airlines from Harry Reid Airport (formerly McCarran Airport), you’ll usually catch your flight from terminal 3. If you’re traveling to St. Louis Lambert International Airport from here, you’ll likely be arriving at terminal 1.

You bet. Save time and effort and fly straight from LAS to STL with Frontier Airlines. Avoid tiresome transfers, reduce the risk of your bags going missing and get to your destination faster — direct flights are preferred by many wise wanderers.

Headwinds, tailwinds, bad weather … They’re just a few factors that can affect how long you spend in your plane seat. However, a trip from LAS to Lambert Field with Frontier Airlines takes just 3 hours and 43 minutes on average, so you’ll have touched down and be in vacay mode in a heartbeat.

If you’re journeying from LAS to STL with Frontier Airlines, you’ll probably be cruising the skies aboard the Airbus A321 or the Airbus A320.

You’ll find 9 Frontier Airlines flights weekly that link LAS to STL.

For more info about changing your flight to St. Louis Lambert International Airport, please visit our Customer Service Portal.

This just in! Airfares offered on Thursdays tend to be the cheapest, according to flight demand on Travelocity in 2021. Tuesday and Wednesday prices are also good, but you may want to prepare your budget if booking during the weekend, as data shows that is when prices are generally at their highest.

Frequent travelers may already know this, but earlier in the week can be the cheapest time to fly. In 2021, flights departing on a Monday were generally the cheapest of the week, whereas you may pay a premium for weekend flights when demand is usually high. On average, tickets were most expensive for Saturday departures, so if you need to fly out on a weekend, you might look for deals ahead of time.

Trying to figure out how early you should book your flight? It’s possible to start comparing international airfares on Travelocity 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 0-2 weeks prior to their travel dates.*According to flight demand on Travelocity.com from January to December 2021. Savings are subject to change based on departure location, date and destination.