Cheap Flights from St. Louis (CPS) to Sioux Falls (FSD)

Popular airlines from St. Louis, MO (CPS-St. Louis Downtown) to Sioux Falls Regional Airport (FSD)

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Frequently asked questions

How much does a flight from St. Louis Downtown Airport (CPS) to Sioux Falls Regional Airport (FSD) cost?
Secure a cheap one-way flight or cheap return flight from St. Louis Downtown Airport (CPS) to Sioux Falls Regional Airport (FSD) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight deals on this route.
What is the cheapest month to fly from St. Louis Downtown Airport (CPS) to Sioux Falls Regional Airport (FSD)?
Traveling in is a great way to save, as it's the cheapest month for flights between CPS and FSD. You'll usually find the lowest fares during off-peak months.
What is the cheapest airline that flies from St. Louis Downtown Airport (CPS) to Sioux Falls Regional Airport (FSD)?
Use the filters on Expedia to compare different airlines and find the most affordable carrier that'll fly you from CPS to FSD. Then, sort your results by "Price (lowest to highest)" to snag a good deal.
How many flights per day from St. Louis Downtown Airport (CPS) to Sioux Falls Regional Airport (FSD)?
Direct flights from St. Louis Downtown Airport (CPS) to Sioux Falls Regional Airport (FSD) aren't available daily, so you'll need to take a flight with a layover. Explore your options with Expedia's filters. Enter your dates and select either "1 Stop" or "2+ Stops."
What day of the week has the most flights from CPS to FSD?
You'll typically find Tuesday the quietest day for flights, while Fridays tend to be the busiest.* However this can vary from season to season and during peak travel times or public holidays.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from St. Louis Downtown Airport (CPS) to Sioux Falls Regional Airport (FSD)?
To touch down at Sioux Falls Regional Airport (FSD) on time, select a flight that leaves from St. Louis Downtown Airport (CPS) before 3 PM. The likelihood of cancellations is 22% higher, on average, for departures after this hour.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from St. Louis Downtown Airport (CPS) to Sioux Falls Regional Airport (FSD) last-minute?
Booking your flight from CPS to FSD shortly before your journey is usually more expensive. But if you're flexible with your schedule, you could grab a cheap last-minute fare.
Is it cheaper to book a CPS to FSD flight and hotel package?
Booking a CPS to FSD flight and hotel package is typically cheaper than booking separately. With Expedia, you can enjoy the convenience of organizing your trip all in one place. Select from our extensive range of stays and then add activities, flights and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from St. Louis Downtown Airport (CPS) to Sioux Falls Regional Airport (FSD)?
Generally, it's possible to cancel or reschedule your CPS to FSD flight. However, if the booking was made more than 24 hours ago, additional fees may apply. Check your airline's policies in your itinerary to see what changes are allowed and whether any costs are involved. You'll also find more details on our Customer Service portal.

Travel information

Travel information

Origin airport
St. Louis Downtown
Destination airport
Sioux Falls Regional
Distance
486 mi

Book with confidence

Book with confidence

St. Louis to Sioux Falls Flights

The cheapest times to fly from St. Louis to Sioux Falls

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from St. Louis to Sioux Falls are during the month of . You can find some of the cheapest flights from St. Louis to Sioux Falls with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from St. Louis to Sioux Falls

Sunday is one of the best days to book for cheap flights from St. Louis to Sioux Falls: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from St. Louis to Sioux Falls

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from St. Louis to Sioux Falls in 2025. You can also book with separate airlines for your outbound and return journeys, from one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap St. Louis to Sioux Falls flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your St. Louis to Sioux Falls airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

St. Louis to Sioux Falls Flights

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