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

Departing from Sioux Falls to St. Louis will take you 3h 36m. 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 American Airlines and United Airlines, starting at $243 and $268 round-trip. Delta is currently priced 33% below the average price you’ll pay for this route.

In terms of precipitation, rainfall in St. Louis ranges from 2.2 - 4.7 inches per month. May is typically the wettest month, when rainfall can reach 4.7 in. February is typically the driest time to visit St. Louis when rainfall is around 2.2 in.

If weather is an important factor for your trip to St. Louis, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 32.0 F).

What are the most popular airlines that fly from Sioux Falls to St. Louis?

Delta, American Airlines and United Airlines are the most popular airlines when flying from Sioux Falls to St. Louis.

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.

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.

$115+ Flights from Sioux Falls to St. Louis

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Cheap 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 December 27, 2025.

Wed 12/3111:06 amFSD - STL

1 stop3h 57mDelta

Sun 1/46:05 amSTL - FSD

1 stop4h 21mDelta

Deal found 12/25

$399

Mon 12/297:29 pmFSD - STL

1 stop4h 15mAmerican Airlines

Wed 12/312:06 pmSTL - FSD

1 stop20h 05mAmerican Airlines

Deal found 12/25

$715

Mon 12/2910:01 amFSD - STL

1 stop24h 55mMultiple Airlines

Wed 12/314:50 pmSTL - FSD

2 stops41h 02mMultiple Airlines

Deal found 12/25

$876

Mon 12/293:08 pmFSD - STL

1 stop6h 35mUnited Airlines

Wed 12/315:02 pmSTL - FSD

3 stops26h 58mUnited Airlines

Deal found 12/25

$1,030

Best flights from Sioux Falls to St. Louis
Discover carefully curated flight deals from Sioux Falls to St. Louis that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 27, 2025.

Sat 1/176:25 amFSD - STL

1 stop4h 16mDelta

Mon 1/195:25 pmSTL - FSD

1 stop5h 41mDelta

Deal found 12/27

$239

Sat 2/215:41 pmFSD - STL

1 stop5h 37mAmerican Airlines

Mon 2/236:00 amSTL - FSD

1 stop5h 49mAmerican Airlines

Deal found 12/26

$249

Fri 1/239:00 amFSD - STL

1 stop7h 55mUnited Airlines

Mon 1/264:49 pmSTL - FSD

1 stop5h 01mUnited Airlines

Deal found 12/25

$249

Sun 1/1111:43 amFSD - STL

1 stop24h 29mMultiple Airlines

Sun 1/1810:06 amSTL - FSD

2 stops32h 05mMultiple Airlines

Deal found 12/26

$350

Wed 4/18:00 amFSD - STL

1 stop6h 24mDelta

Sun 4/56:29 amSTL - FSD

1 stop6h 24mDelta

Deal found 12/26

$249

Fri 1/99:00 amFSD - STL

1 stop7h 55mUnited Airlines

Tue 1/1311:20 amSTL - FSD

1 stop5h 58mUnited Airlines

Deal found 12/25

$259

Sun 1/115:00 amFSD - STL

1 stop5h 43mDelta

Sun 1/186:10 amSTL - FSD

1 stop6h 12mDelta

Deal found 12/26

$254

Sun 1/186:15 pmFSD - STL

1 stop16h 05mAmerican Airlines

Sun 1/253:37 pmSTL - FSD

1 stop6h 27mAmerican Airlines

Deal found 12/25

$299

Thu 1/157:30 amFSD - STL

1 stop7h 00mUnited Airlines

Sat 1/174:49 pmSTL - FSD

1 stop5h 01mUnited Airlines

Deal found 12/24

$309

Sat 1/176:00 amFSD - STL

2 stops12h 34mAmerican Airlines

Mon 1/196:00 amSTL - FSD

1 stop5h 51mAmerican Airlines

Deal found 12/27

$392

Last-minute flights from Sioux Falls to St. Louis
Discover last-minute flight deals from Sioux Falls to St. Louis. Data last updated December 27, 2025 and is based on user searches.

Thu 1/15:00 amFSD - STL

1 stop6h 12mDelta

Sun 1/46:05 amSTL - FSD

1 stop4h 21mDelta

Deal found 12/25

$264

Fri 1/99:00 amFSD - STL

1 stop7h 55mUnited Airlines

Tue 1/1311:20 amSTL - FSD

1 stop5h 58mUnited Airlines

Deal found 12/25

$259

Sun 1/115:00 amFSD - STL

1 stop5h 43mDelta

Sun 1/186:10 amSTL - FSD

1 stop6h 12mDelta

Deal found 12/26

$254

Sun 1/1111:43 amFSD - STL

1 stop24h 29mMultiple Airlines

Thu 1/159:50 amSTL - FSD

2 stops30h 17mMultiple Airlines

Deal found 12/27

$294

Sun 1/1111:43 amFSD - STL

1 stop24h 29mMultiple Airlines

Sun 1/1810:06 amSTL - FSD

2 stops32h 05mMultiple Airlines

Deal found 12/26

$350

Thu 1/157:30 amFSD - STL

1 stop7h 00mUnited Airlines

Sat 1/174:49 pmSTL - FSD

1 stop5h 01mUnited Airlines

Deal found 12/24

$309

Sat 1/176:25 amFSD - STL

1 stop4h 16mDelta

Mon 1/195:25 pmSTL - FSD

1 stop5h 41mDelta

Deal found 12/27

$239

Sat 1/176:00 amFSD - STL

2 stops12h 34mAmerican Airlines

Mon 1/196:00 amSTL - FSD

1 stop5h 51mAmerican Airlines

Deal found 12/27

$392

Sun 1/186:15 pmFSD - STL

1 stop16h 05mAmerican Airlines

Sun 1/253:37 pmSTL - FSD

1 stop6h 27mAmerican Airlines

Deal found 12/25

$299

Thu 1/2211:02 amFSD - STL

1 stop3h 36mDelta

Mon 1/266:10 amSTL - FSD

1 stop4h 12mDelta

Deal found 12/25

$249

Fri 1/236:00 amFSD - STL

2 stops12h 34mAmerican Airlines

Mon 1/263:37 pmSTL - FSD

1 stop6h 27mAmerican Airlines

Deal found 12/25

$388

One-way flights from Sioux Falls to St. Louis
Search for one-way flight options from Sioux Falls to St. Louis. Find affordable one-way fares based on user searches. Data last updated December 27, 2025.

Thu 1/15:00 amFSD - STL

1 stop6h 12mDelta

Deal found 12/25

$115

Mon 2/94:57 pmFSD - STL

2 stops29h 30mMultiple Airlines

Deal found 12/26

$131

Mon 2/95:35 pmFSD - STL

1 stop5h 24mAmerican Airlines

Deal found 12/26

$238

Fri 1/21:25 pmFSD - STL

1 stop4h 55mDelta

Deal found 12/25

$337

Fri 1/211:56 amFSD - STL

2 stops22h 06mMultiple Airlines

Deal found 12/25

$412

Thu 1/13:21 pmFSD - STL

3 stops42h 41mMultiple Airlines

Deal found 12/25

$483

Find flight deals from Sioux Falls to St. Louis

Most accurate provider	eDreams 3 stars
Most trusted provider	eDreams 3 stars
Round-trip from	$249 (Delta)
One-way from	$115 (Delta)
Popular in	July
Cheapest in	January
Average price	$297

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

One-way flight from Sioux Falls Joe Foss Field to Lambert-St Louis

Search Deals

Highest demand for flights based on searches. 3% potential increase in price ($10 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 3% potential price decrease ($11 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in December 2025

Search Deals

Cheapflights Fare Finder

Use the filters below to find and compare flights from Sioux Falls to St. Louis that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Sioux FallsSt. Louis

FSD - STL

FSDSTL

Sioux Falls Joe Foss Field

Sat 1/17

6:25 am-10:41 am

1 stop4h 16m

Lambert-St Louis

Mon 1/19

5:25 pm-11:06 pm

1 stop5h 41m

$239

Sioux FallsSt. Louis

FSD - STL

FSDSTL

Sioux Falls Joe Foss Field

Sat 2/21

5:41 pm-11:18 pm

1 stop5h 37m

Lambert-St Louis

Mon 2/23

6:00 am-11:49 am

1 stop5h 49m

$249

Sioux FallsSt. Louis

FSD - STL

FSDSTL

Sioux Falls Joe Foss Field

Fri 1/23

9:00 am-4:55 pm

1 stop7h 55m

Lambert-St Louis

Mon 1/26

4:49 pm-9:50 pm

1 stop5h 01m

$249

Sioux FallsSt. Louis

FSD - STL

FSDSTL

Sioux Falls Joe Foss Field

Wed 4/1

8:00 am-2:24 pm

1 stop6h 24m

Lambert-St Louis

Sun 4/5

6:29 am-12:53 pm

1 stop6h 24m

$249

Sioux FallsSt. Louis

FSD - STL

FSDSTL

Sioux Falls Joe Foss Field

Sun 1/11

5:00 am-10:43 am

1 stop5h 43m

Lambert-St Louis

Sun 1/18

6:10 am-12:22 pm

1 stop6h 12m

$254

Sioux FallsSt. Louis

FSD - STL

FSDSTL

Sioux Falls Joe Foss Field

Fri 1/9

9:00 am-4:55 pm

1 stop7h 55m

Lambert-St Louis

Tue 1/13

11:20 am-5:18 pm

1 stop5h 58m

$259

Sioux FallsSt. Louis

FSD - STL

FSDSTL

Sioux Falls Joe Foss Field

Sun 1/18

6:15 pm-10:20 am

1 stop16h 05m

Lambert-St Louis

Sun 1/25

3:37 pm-10:04 pm

1 stop6h 27m

$299

Sioux FallsSt. Louis

FSD - STL

FSDSTL

Sioux Falls Joe Foss Field

Thu 1/15

7:30 am-2:30 pm

1 stop7h 00m

Lambert-St Louis

Sat 1/17

4:49 pm-9:50 pm

1 stop5h 01m

$309

Sioux FallsSt. Louis

FSD - STL

FSDSTL

Sioux Falls Joe Foss Field

Sun 1/11

11:43 am-12:12 pm

1 stop24h 29m

Lambert-St Louis

Sun 1/18

10:06 am-6:11 pm

2 stops32h 05m

$350

Sioux FallsSt. Louis

FSD - STL

FSDSTL

Sioux Falls Joe Foss Field

Sat 1/17

6:00 am-6:34 pm

2 stops12h 34m

Lambert-St Louis

Mon 1/19

6:00 am-11:51 am

1 stop5h 51m

$392

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/25

Showing 1-10 of 16 results

Compare providers for flights from Sioux Falls to St. Louis

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 December.

Provider	Price Accuracy	Trust Score*
Expedia	Price Accuracy2 stars	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust Score*1 star
eDreams	Price Accuracy3 stars	Trust 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 November is currently the most expensive (average of $418). 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?

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.

Reviews of airlines servicing St. Louis

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

8,018 reviews

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

8,018 reviews

Delta

7.9

Good

8,018 reviews

Reviews

1 / 20

6.0

Good

Jim,Nov 2025

AVL - ATL

United Airlines

7.4

Good

9,116 reviews

Delta

7.9

Good

8,018 reviews

Reviews

1 / 20

6.0

Good

Jim,Nov 2025

AVL - ATL

American Airlines

7.2

Good

11,067 reviews

Delta

7.9

Good

8,018 reviews

Reviews

1 / 20

6.0

Good

Jim,Nov 2025

AVL - ATL

Related info for your journey

How long is the flight from Sioux Falls to St. Louis?
Departing from Sioux Falls to St. Louis will take you 3h 36m. 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 American Airlines and United Airlines, starting at $243 and $268 round-trip. Delta is currently priced 33% 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 November is currently the most expensive (average of $418). 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

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Other flights to St. Louis

Top 3 airlines flying from Sioux Falls to St. Louis

Airline	Cheapest	Average	Flexibility	On-time
Delta	Cheapest$228	Average$298	FlexibilityNo cancel fee	On-timeN/A
American Airlines	Cheapest$243	Average$289	FlexibilityNo cancel fee	On-time71%
United Airlines	Cheapest$268	Average$314	FlexibilityNo cancel fee	On-time69%

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$115+ Cheap flights from Sioux Falls to St. Louis (FSD - STL)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/1. Fares are subject to change and may not be available on all flights or dates of travel.

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

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Sioux Falls to St. Louis

Cheapest flights from Sioux Falls to St. LouisExplore 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 December 27, 2025.

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 December 27, 2025.

Find flight deals from Sioux Falls to St. Louis

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Cheapflights Fare Finder

Use the filters below to find and compare flights from Sioux Falls to St. Louis that are best for you.

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 December.

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.

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?

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

Reviews of airlines servicing St. Louis

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.

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?

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

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

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

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

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

Traveling to a place near St. Louis?

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Alternative routes for Sioux Falls to St. Louis

See prices for flight routes from nearby airports that may be better suited for you.

Top 3 airlines flying from Sioux Falls to St. Louis

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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 December 27, 2025.