Cheap flights from Sioux Falls to St. Louis from $239
This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Sioux Falls to St. Louis departing on 5/15. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
Discover deals from 900+ travel sites with momondo.
Save money when you book flights with momondo
Big names and deals
Big names and deals
Search 100s of travel sites to compare prices.Filter for what you want
Filter for what you want
Free Wi-Fi? Stopover? Instantly customize your results.Trusted and free
Trusted and free
We’re completely free to use - no hidden charges or fees.Price Alerts
Price Alerts
Not ready to book? to track prices.Find the cheapest flights from Sioux Falls to St. Louis
Cheap round-trip flights
Cheap one-way flights
Cheap last minute flights
United Airlines flights from Sioux Falls to St. Louis
Our best United Airlines deals on Sioux Falls to St. Louis flight tickets
Delta flights from Sioux Falls to St. Louis
Our best Delta deals on Sioux Falls to St. Louis flight tickets
See travel insights to St. Louis from
How to get the cheapest flight ticket from Sioux Falls to St. Louis
Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
What is the typical price of a round-trip flight between Sioux Falls and St. Louis?
What is the cheapest month to fly to St. Louis?
In general, August is the cheapest month to fly from Sioux Falls to St. Louis. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $268. The month of April is another great option to travel to St. Louis, with average flight prices from Sioux Falls averaging around $289.
What is the cheapest day to depart on your flight to St. Louis?
The cheapest day to depart on your flight to St. Louis is on a Thursday when prices can be found for as low as $253. This is often the case because there is less demand to fly during this day of the week. If your travel schedule is flexible, try to avoid departing on a Monday because tickets tend to average around $440. These prices are subject to change though, so be sure to set up a Price Alert for flights to St. Louis.
When to book flights from Sioux Falls to St. Louis
Cheap Sioux Falls to St. Louis (FSD to STL) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Sioux Falls to St. Louis
How far is Sioux Falls Joe Foss Field to Lambert-St Louis by plane?
The distance between Sioux Falls Joe Foss Field and Lambert-St Louis is about 480.2 mi. 3h 27m is a normal flight duration for this route.
When did momondo last update prices for flights from Sioux Falls Joe Foss Field Airport to Lambert-St Louis Airport?
Prices for flights from Sioux Falls Joe Foss Field Airport to Lambert-St Louis Airport were last updated today.
How many operators does momondo search for flights from Sioux Falls Joe Foss Field Airport to Lambert-St Louis Airport?
As of May 2025, there are 3 operators available to choose from for flights from Sioux Falls Joe Foss Field Airport to Lambert-St Louis Airport.
How old do you have to be to fly from Sioux Falls Joe Foss Field Airport to Lambert-St Louis Airport?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Sioux Falls Joe Foss Field Airport to Lambert-St Louis Airport.
What documentation or ID do you need to fly to Lambert-St Louis Airport?
The necessary travel and health documents for your Lambert-St Louis Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.
What is the most popular airline from Sioux Falls to St. Louis?
Based on momondo bookings for flights between Sioux Falls and St. Louis, the leading airline is Delta, making up 42% of the total bookings. Other popular airlines include American Airlines with 35% and United Airlines with 22%.
Best airlines flying from Sioux Falls to St. Louis
Compare and see reviews for airlines that fly from Sioux Falls to St. Louis with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $228 | Free Cancellation | Rating 7.4 8,696 reviews | |||
| PriceFrom $228 | Free Cancellation | Rating 7.2 10,000 reviews | |||
| PriceFrom $228 | Free Cancellation | Rating 8.0 7,934 reviews |
Traveling to a place near St. Louis?
Book flights to St. Louis if you plan to visit one of these locationsWhy use momondo?
Why should I use momondo to find a flight deal from Sioux Falls to St. Louis?
momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Sioux Falls to St. Louis. momondo saves you time and could save you money on your trip.
Can I find flights from Sioux Falls to St. Louis with flexible booking policies on momondo?
Flights from Sioux Falls to St. Louis with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.
How can momondo help me find flights from Sioux Falls to St. Louis?
momondo helps you find the best flight between Sioux Falls and St. Louis by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.
I’m not ready to book a flight from Sioux Falls to St. Louis right now. Can momondo alert me if prices change?
If you are not ready to book a flight from Sioux Falls to St. Louis now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to St. Louis and let you know when they change.