C$356 Cheap Flights from Sioux Falls (FSD) to St Louis (STL)

Compare Sioux Falls to St Louis flight deals

Find the cheapest month or even day of the year to fly to St Louis

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Flight deals from Sioux Falls to St Louis

Looking for a cheap last-minute deal or the best return flight from Sioux Falls Airport to St Louis Airport? If you want to travel next month, return fares start from C$420. Find the lowest prices on one-way and return tickets right here.

Find the cheapest month to fly from Sioux Falls to St Louis from C$356 one-way

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Sioux Falls to St Louis flights are currently cheapest in June.

Sioux Falls to St Louis: Alternative routes

Compare routes from Sioux Falls to St Louis below. You may find an airport to fly into that's cheaper, faster, or easier than St Louis.

Sioux Falls to St Louis: Flight information

The things to know before you go.
Cheapest flight foundC$356
Cheapest month to flyJune

Finding cheap flights from Sioux Falls to St Louis: Frequently asked questions

The best price we found for a return flight from Sioux Falls to St Louis is C$420. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
Currently, there are no airlines that fly direct from Sioux Falls to St Louis. But we found flights with one or more stops from C$420.
As of May 2026, there are no flights flying from Sioux Falls to St Louis.
The cheapest month to fly from Sioux Falls to St Louis is usually June.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Sioux Falls Airport to St Louis Airport on Saturday, June 6, 2026.
No airlines currently offer direct flights between Sioux Falls Airport and St Louis Airport. Most routes have one or more stops.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to St Louis but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to St Louis is around 40 days in advance, so don’t leave your flight to the last minute.
Currently, United offers the cheapest flight tickets to St Louis.

Traveling from Joe Foss Field (FSD) to Lambert-St. Louis International Airport (STL): what you need to know

  • Getting away during a peak time like October? Popular seasons (like summer, Christmas and New Year) can add another hour at security. Play things extra safe and arrive up to four hours ahead of international flights and two hours before domestic departures.

  • If you want a stopover for your flight from Joe Foss Field to Lambert-St. Louis International Airport, just uncheck 'Direct flights only' and look at all your options. These are the popular stopovers between FSD and STL:

    • O'Hare International Airport

    • Minneapolis-St. Paul International Airport

    • Nashville International Airport

How to find the cheapest flights from Joe Foss Field (FSD) to Lambert-St. Louis International Airport (STL)

  • The lowest price we've found for a one-way ticket from Joe Foss Field to Lambert-St. Louis International Airport is C$356. For a return flight on this route, the best price is C$420. Depending on the availability and when you book, these fares could change.

  • It's usually best to book ahead of time if you want to get cheap flight tickets from FSD to STL. That's because airlines adjust prices based on demand, which tends to increase closer to departure.

  • Getting cheap flight tickets from Joe Foss Field to Lambert-St. Louis International Airport is easy if you can be flexible with your travel dates. Try using the 'Whole month' search tool to see the best prices across every month and land a great deal.

  • Create a Price Alert for cheap flight tickets from FSD to STL. There's no need to check every day to find out if prices have dropped. We'll notify you as soon as there's a change in price.

  • Tailor your flights using filters. Choose your arrival and departure times, airlines and total journey duration. You can also sort results by 'Best,' 'Cheapest' or 'Fastest' flights from Joe Foss Field to Lambert-St. Louis International Airport.

Handy information about Joe Foss Field (FSD)

Arriving at Lambert-St. Louis International Airport (STL)

Getting from Lambert-St. Louis International Airport (STL) to central St Louis

  • From Lambert-St. Louis International Airport, St Louis is approximately 26 kilometres away. It takes around 21 minutes to reach the center driving.

  • Getting to the center by public transport takes around 36 minutes.

When to fly to Lambert-St. Louis International Airport (STL)

  • It's time to choose your travel dates for your flight from Joe Foss Field to Lambert-St. Louis International Airport. July is the busiest month to visit St Louis. If you want a more peaceful vibe, go in April.

  • When booking your flight from Joe Foss Field to Lambert-St. Louis International Airport, think about the kind of weather you enjoy. July is the warmest month in St Louis, with the temperature ranging from 17ºC to 33ºC.

  • January has average temperatures of between -8ºC and 7ºC. Search for cheap flight tickets from FSD to STL sometime around then if you like traveling in cooler conditions.

More about St Louis

  • Start your St Louis trip right by finding a fantastic stay. As soon as you've booked your flight from FSD to STL, have a look at our range of hotel options including:

  • There are so many things to see and do in this city it can be hard to work out where to begin. The Gateway Arch, Forest Park and St. Louis Zoo are top attractions which should feature on every St Louis itinerary.

Complete your St Louis trip with hotels and a car rental

  • You've booked a cheap ticket to Lambert-St. Louis International Airport — next on the list is finding a place to stay, and perhaps even a set of wheels. We've compared prices across hundreds of companies to bring you the top hotels and car rental deals in St Louis.

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.