HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
St. Louis

$111+ Cheap flights from Sioux Falls to St. Louis (FSD - STL)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 12/4. Fares are subject to change and may not be available on all flights or dates of travel.
FSD — STL
dic. 12 — dic. 191
vie. 12/12
vie. 12/19
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Sioux Falls to St. Louis with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Find flight deals from Sioux Falls to St. Louis

Cheapest flights from Sioux Falls to St. Louis
Explore the most affordable flight options available from Sioux Falls to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on noviembre 12, 2025.

This Frontier deal was found by Cheapflights users on 11/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 12/42:26 pmFSD - STL
1 stop19h 48mFrontier
mié. 12/107:43 pmSTL - FSD
1 stop17h 48mFrontier
Deal found 11/11$111
This American Airlines deal was found by Cheapflights users on 11/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 11/287:16 pmFSD - STL
1 stop4h 46mAmerican Airlines
mar. 12/25:17 amSTL - FSD
1 stop7h 19mAmerican Airlines
Deal found 11/10$244
This Delta deal was found by Cheapflights users on 11/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 11/205:18 amFSD - STL
1 stop3h 37mDelta
jue. 11/276:00 amSTL - FSD
1 stop4h 18mDelta
Deal found 11/11$264
This American Airlines deal was found by Cheapflights users on 11/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 11/131:10 pmFSD - STL
1 stop6h 20mAmerican Airlines
jue. 11/205:17 amSTL - FSD
1 stop7h 19mAmerican Airlines
Deal found 11/12$309
This Delta deal was found by Cheapflights users on 11/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 11/145:18 amFSD - STL
1 stop3h 37mDelta
dom. 11/165:34 pmSTL - FSD
1 stop5h 26mDelta
Deal found 11/10$319
This Kiwi.com deal was found by Cheapflights users on 11/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 11/3012:06 pmFSD - STL
2 stops35h 51mMultiple Airlines
mié. 12/37:43 pmSTL - FSD
1 stop17h 48mMultiple Airlines
Deal found 11/10$379
This Kiwi.com deal was found by Cheapflights users on 11/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 11/2011:46 amFSD - STL
1 stop23h 30mMultiple Airlines
vie. 11/217:43 pmSTL - FSD
2 stops39h 13mMultiple Airlines
Deal found 11/11$386
This Delta deal was found by Cheapflights users on 11/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 12/294:25 pmFSD - STL
1 stop5h 51mDelta
vie. 1/26:05 amSTL - FSD
1 stop6h 28mDelta
Deal found 11/10$403
This Kiwi.com deal was found by Cheapflights users on 11/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 11/1310:59 amFSD - STL
1 stop24h 25mMultiple Airlines
jue. 11/209:54 pmSTL - FSD
2 stops21h 42mMultiple Airlines
Deal found 11/12$473
This American Airlines deal was found by Cheapflights users on 11/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 11/257:16 pmFSD - STL
1 stop4h 40mAmerican Airlines
sáb. 11/298:04 pmSTL - FSD
1 stop3h 55mAmerican Airlines
Deal found 11/9$478

Cheap flight deals from Sioux Falls to St. Louis

Discover tips and strategies to find the most affordable flight options for your journey from Sioux Falls (FSD) to St. Louis (STL). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated noviembre 12, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$111
(Frontier)

Popular in

July

Cheapest in

January

Average price

$378
Provider with most accurate pricing for Sioux Falls Joe Foss Field-Lambert-St Louis flight deals.
Search Deals
Provider most trusted by Cheapflights users for Sioux Falls Joe Foss Field-Lambert-St Louis flights.
Search Deals
From Sioux Falls Joe Foss Field to Lambert-St Louis
Search Deals
Highest demand for flights based on searches. 5% potential increase in price ($18 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($12 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in November 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Sioux Falls to St. Louis that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated noviembre 12, 2025.
Use the filters below to find and compare flights from Sioux Falls to St. Louis that are best for you.

Fly from

Sioux Falls

Fly to

St. Louis

Route

Depart

Return

Price

Sioux FallsSt. Louis

FSD - STL

FSDSTL

Sioux Falls Joe Foss Field

jue. 12/4

2:26 pm-10:14 am

1 stop19h 48m

Lambert-St Louis

mié. 12/10

7:43 pm-1:31 pm

1 stop17h 48m

$111

Sioux FallsSt. Louis

FSD - STL

FSDSTL

Sioux Falls Joe Foss Field

vie. 11/28

7:16 pm-12:02 am

1 stop4h 46m

Lambert-St Louis

mar. 12/2

5:17 am-12:36 pm

1 stop7h 19m

$244

Sioux FallsSt. Louis

FSD - STL

FSDSTL

Sioux Falls Joe Foss Field

mar. 3/3

5:31 pm-11:21 pm

1 stop5h 50m

Lambert-St Louis

sáb. 3/7

7:05 am-12:37 pm

1 stop5h 32m

$324

Sioux FallsSt. Louis

FSD - STL

FSDSTL

Sioux Falls Joe Foss Field

dom. 11/30

12:06 pm-11:57 pm

2 stops35h 51m

Lambert-St Louis

mié. 12/3

7:43 pm-1:31 pm

1 stop17h 48m

$379

Sioux FallsSt. Louis

FSD - STL

FSDSTL

Sioux Falls Joe Foss Field

mar. 3/3

1:02 pm-4:47 pm

1 stop3h 45m

Lambert-St Louis

sáb. 3/7

6:35 am-10:56 pm

2 stops16h 21m

$383

Sioux FallsSt. Louis

FSD - STL

FSDSTL

Sioux Falls Joe Foss Field

lun. 12/29

4:25 pm-10:16 pm

1 stop5h 51m

Lambert-St Louis

vie. 1/2

6:05 am-12:33 pm

1 stop6h 28m

$403

Sioux FallsSt. Louis

FSD - STL

FSDSTL

Sioux Falls Joe Foss Field

mar. 3/3

1:40 pm-10:14 pm

2 stops8h 34m

Lambert-St Louis

sáb. 3/7

5:54 pm-11:42 pm

1 stop5h 48m

$412

Sioux FallsSt. Louis

FSD - STL

FSDSTL

Sioux Falls Joe Foss Field

mar. 11/25

7:16 pm-11:56 pm

1 stop4h 40m

Lambert-St Louis

sáb. 11/29

8:04 pm-11:59 pm

1 stop3h 55m

$478

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/11

Compare providers for flights from Sioux Falls to St. Louis

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Sioux Falls to St. Louis in November.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Sioux Falls-St. Louis flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Sioux Falls-St. Louis flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Sioux Falls-St. Louis flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Sioux Falls-St. Louis flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Sioux Falls-St. Louis flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Sioux Falls to St. Louis

Have a flexible travel schedule? Discover the best time to fly to St. Louis from Sioux Falls with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Sioux Falls to St. Louis

What is the cheapest month to book a flight from Sioux Falls to St. Louis?

Currently, January is the cheapest month in which you can book a flight from Sioux Falls to St. Louis (average of $222). Flying from Sioux Falls to St. Louis in July is currently the most expensive (average of $313). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from FSD to STL?

Find hourly flight availability from Sioux Falls to St. Louis. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated noviembre 12, 2025.

It’s typically best to fly out from Sioux Falls to St. Louis in the evening. Doing so could potentially save you 42% on the flight price compared to flying in the morning, which is usually more expensive.

How much does it cost to fly round-trip from Sioux Falls to St. Louis?

Reviews of airlines servicing St. Louis

Get insights into the airlines that provide service to St. Louis. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to St. Louis. Reviews last updated noviembre 12, 2025.
Read reviews from past customers who have flown Delta, United Airlines, and American Airlines from Sioux Falls to St. Louis. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.9
Good
8,009 reviews

Entertainment

7.9

Food

7.3

Overall

7.9

Comfort

7.9

Crew

8.5

Boarding

8.1

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Delta
7.9
Good
8,009 reviews
Delta
7.9
Good
8,009 reviews

Entertainment

7.9

Food

7.3

Overall

7.9

Comfort

7.9

Crew

8.5

Boarding

8.1

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
United Airlines
7.4
Good
9,015 reviews
Delta
7.9
Good
8,009 reviews

Entertainment

7.9

Food

7.3

Overall

7.9

Comfort

7.9

Crew

8.5

Boarding

8.1

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
American Airlines
7.2
Good
11,049 reviews
Delta
7.9
Good
8,009 reviews

Entertainment

7.9

Food

7.3

Overall

7.9

Comfort

7.9

Crew

8.5

Boarding

8.1

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.

Related info for your journey

Find useful and relevant information for your journey from Sioux Falls to St. Louis. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Sioux Falls to St. Louis?

    Departing from Sioux Falls to St. Louis will take you 4h 46m. There are 470 mi between Sioux Falls and St. Louis. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the cheapest airlines flying from Sioux Falls to St. Louis round-trip?

    Our cheapest airline available from Sioux Falls to St. Louis is Delta. Our recent data shows that you can find tickets from as low as $228 on this airline. Additional options worth looking into are United Airlines and American Airlines, starting at $241 and $258 round-trip. Delta is currently priced 31% below the average price you’ll pay for this route.

  • Can I find deals for flights from Sioux Falls to St. Louis that include hotel bookings?

    Yes. In addition to deals on Sioux Falls to St. Louis flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Sioux Falls to St. Louis?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Sioux Falls to St. Louis.

  • Can I find deals for business class flights from Sioux Falls to St. Louis?

    Yes. Cheapflights offers flight deals from Sioux Falls to St. Louis by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Sioux Falls to St. Louis?

    Currently, January is the cheapest month in which you can book a flight from Sioux Falls to St. Louis (average of $222). Flying from Sioux Falls to St. Louis in July is currently the most expensive (average of $313). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
Edwardsville
O'Fallon
Fairview Heights
Maryland Heights
Collinsville
Eureka
Glencoe
St. Peters
Chesterfield
Alton
Farmington
Festus

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Sioux Falls to St. Louis

See prices for flight routes from nearby airports that may be better suited for you.
Rapid City to St. Louis flights
Rapid City to Kansas City flights
Sioux Falls to Springfield flights
Sioux Falls to Kansas City flights
Rapid City to Springfield flights
Sioux Falls to Branson flights

Top 3 airlines flying from Sioux Falls to St. Louis

Discover the top 3 airlines that operate flights from Sioux Falls to St. Louis. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated noviembre 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$228Average$298FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$241Average$337FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$258Average$290FlexibilityNo cancel feeOn-time71%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.