$126 Cheap flights from Sioux Falls Regional to Lambert-St. Louis Intl. (FSD to STL)

For information on any current St. Louis Lambert International Airport travel advice and quarantine requirements, go to our Covid-19 Travel Advisor. Check before you book your flight, so you don’t get caught up.

Take note of your connecting gate, because there aren’t any direct flights between FSD and Lambert-St. Louis Intl. Airport (STL). American Airlines, United Airlines and Delta are among the airlines that will fly you to St. Louis with only one stopover.

For more info about changing your flight to STL, please visit our Customer Service Portal.

The travel time between Sioux Falls Regional Airport (FSD) and St. Louis Lambert International Airport is ordinarily around 4 hours and 9 minutes. Make your trip comfortable by saving a few podcasts on your laptop or tablet and enjoying them with your seat reclined.

The flight distance from FSD to St. Louis Lambert International Airport is just 470 mi. You’ll be getting off the plane before you know it.

As yet, there are no direct flights available between Joe Foss Field and Lambert Field. Start planning early to save time and find a route with the fewest layovers.

From the moment you enter the departure terminal to when you leave the arrivals terminal, if you’re flying with Southwest Airlines, American Airlines or Delta you can be sure that COVID-19 measures and social distancing rules have been adhered to. Many airlines have introduced capped capacity flights and keeping the middle seat empty.

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.