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Sioux Falls

$171+ Cheap flights from St. Louis to Sioux Falls (STL - FSD)

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 9/18. Fares are subject to change and may not be available on all flights or dates of travel.
STL — FSD
Aug 23 — Aug 301
Sat 8/23
Sat 8/30
1 adult, Economy
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Cheap flight deals from St. Louis to Sioux Falls

Discover tips and strategies to find the most affordable flight options for your journey from St. Louis (STL) to Sioux Falls (FSD). 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 August 18, 2025.

Round-trip from

$227
(United Airlines)

One-way from

$171
(Kiwi.com)

Popular in

July

Cheapest in

February

Average price

$344
From Lambert-St Louis to Sioux Falls Joe Foss Field
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One-way flight from Lambert-St Louis to Sioux Falls Joe Foss Field
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Highest demand for flights based on searches. 14% potential increase in price ($54 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($13 potential savings vs. average RT price).
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Average for round-trip flights in August 2025
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Find flight deals from St. Louis to Sioux Falls

Cheapest flights from St. Louis to Sioux Falls
Explore the most affordable flight options available from St. Louis to Sioux Falls. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 18, 2025.

This United Airlines deal was found by Cheapflights users on 8/16. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/305:30 pmSTL - FSD
1 stop4h 42mUnited Airlines
Tue 9/25:06 pmFSD - STL
1 stop6h 47mUnited Airlines
Deal found 8/16$227
This American Airlines deal was found by Cheapflights users on 8/16. 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.
Wed 10/17:16 amSTL - FSD
1 stop5h 22mAmerican Airlines
Mon 10/65:07 pmFSD - STL
1 stop6h 42mAmerican Airlines
Deal found 8/16$229
This FlightHub deal was found by Cheapflights users on 8/16. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/207:54 pmSTL - FSD
1 stop17h 29mFrontier
Fri 8/222:08 pmFSD - STL
1 stop19h 03mFrontier
Deal found 8/16$239
This Frontier deal was found by Cheapflights users on 8/17. 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.
Sat 9/67:55 pmSTL - FSD
1 stop18h 14mFrontier
Mon 9/152:54 pmFSD - STL
1 stop18h 12mFrontier
Deal found 8/17$252
This American Airlines deal was found by Cheapflights users on 8/16. 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.
Fri 8/297:59 pmSTL - FSD
1 stop4h 29mAmerican Airlines
Sat 8/305:15 pmFSD - STL
1 stop5h 59mAmerican Airlines
Deal found 8/16$339
This Kiwi.com deal was found by Cheapflights users on 8/16. 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.
Fri 10/249:50 amSTL - FSD
2 stops10h 11mMultiple Airlines
Mon 10/2712:41 pmFSD - STL
1 stop8h 23mMultiple Airlines
Deal found 8/16$367
This United Airlines deal was found by Cheapflights users on 8/17. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/253:20 pmSTL - FSD
1 stop6h 52mUnited Airlines
Mon 9/18:00 amFSD - STL
1 stop6h 33mUnited Airlines
Deal found 8/17$378
This United Airlines deal was found by Cheapflights users on 8/16. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/241:40 pmSTL - FSD
1 stop6h 41mUnited Airlines
Mon 10/278:47 amFSD - STL
1 stop27h 52mUnited Airlines
Deal found 8/16$397
This American Airlines deal was found by Cheapflights users on 8/17. 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.
Sat 9/66:29 amSTL - FSD
2 stops11h 43mAmerican Airlines
Mon 9/156:00 pmFSD - STL
1 stop5h 48mAmerican Airlines
Deal found 8/17$445
This United Airlines deal was found by Cheapflights users on 8/17. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/15:15 amSTL - FSD
1 stop5h 26mUnited Airlines
Fri 9/511:44 amFSD - STL
1 stop24h 59mUnited Airlines
Deal found 8/17$452

Cheapflights Fare Finder

 
Customize your flight search to find flights from St. Louis to Sioux Falls 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 August 18, 2025.
Use the filters below to find and compare flights from St. Louis to Sioux Falls that are best for you.

Fly from

St. Louis

Fly to

Sioux Falls

Route

Depart

Return

Price

St. LouisSioux Falls

STL - FSD

STLFSD

Lambert-St Louis

Sat 8/30

5:30 pm-10:12 pm

1 stop4h 42m

Sioux Falls Joe Foss Field

Tue 9/2

5:06 pm-11:53 pm

1 stop6h 47m

$227

St. LouisSioux Falls

STL - FSD

STLFSD

Lambert-St Louis

Wed 10/1

7:16 am-12:38 pm

1 stop5h 22m

Sioux Falls Joe Foss Field

Mon 10/6

5:07 pm-11:49 pm

1 stop6h 42m

$229

St. LouisSioux Falls

STL - FSD

STLFSD

Lambert-St Louis

Sat 9/6

7:55 pm-2:09 pm

1 stop18h 14m

Sioux Falls Joe Foss Field

Mon 9/15

2:54 pm-9:06 am

1 stop18h 12m

$252

St. LouisSioux Falls

STL - FSD

STLFSD

Lambert-St Louis

Fri 8/29

7:59 pm-12:28 am

1 stop4h 29m

Sioux Falls Joe Foss Field

Sat 8/30

5:15 pm-11:14 pm

1 stop5h 59m

$339

St. LouisSioux Falls

STL - FSD

STLFSD

Lambert-St Louis

Fri 10/24

9:50 am-8:01 pm

2 stops10h 11m

Sioux Falls Joe Foss Field

Mon 10/27

12:41 pm-9:04 pm

1 stop8h 23m

$367

St. LouisSioux Falls

STL - FSD

STLFSD

Lambert-St Louis

Mon 8/25

3:20 pm-10:12 pm

1 stop6h 52m

Sioux Falls Joe Foss Field

Mon 9/1

8:00 am-2:33 pm

1 stop6h 33m

$378

St. LouisSioux Falls

STL - FSD

STLFSD

Lambert-St Louis

Fri 10/24

1:40 pm-8:21 pm

1 stop6h 41m

Sioux Falls Joe Foss Field

Mon 10/27

8:47 am-12:39 pm

1 stop27h 52m

$397

St. LouisSioux Falls

STL - FSD

STLFSD

Lambert-St Louis

Sat 9/6

6:29 am-6:12 pm

2 stops11h 43m

Sioux Falls Joe Foss Field

Mon 9/15

6:00 pm-11:48 pm

1 stop5h 48m

$445

St. LouisSioux Falls

STL - FSD

STLFSD

Lambert-St Louis

Mon 9/1

5:15 am-10:41 am

1 stop5h 26m

Sioux Falls Joe Foss Field

Fri 9/5

11:44 am-12:43 pm

1 stop24h 59m

$452

St. LouisSioux Falls

STL - FSD

STLFSD

Lambert-St Louis

Mon 10/20

5:31 pm-10:57 pm

1 stop5h 26m

Sioux Falls Joe Foss Field

Thu 10/23

5:20 am-8:51 am

1 stop3h 31m

$455

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/16

Showing 1-10 of 12 results
1
2

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

Have a flexible travel schedule? Discover the best time to fly to Sioux Falls from St. Louis 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 St. Louis to Sioux Falls

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

Currently, September is the cheapest month in which you can book a flight from St. Louis to Sioux Falls (average of $334). Flying from St. Louis to Sioux Falls in December is currently the most expensive (average of $446). 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 STL to FSD?

Find hourly flight availability from St. Louis to Sioux Falls. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated August 18, 2025.

It’s optimal to fly from St. Louis to Sioux Falls in the afternoon. By choosing this option you can save up to 52% on the cost of your flight, compared to a flight at noon.

Reviews of airlines servicing Sioux Falls

Get insights into the airlines that provide service to Sioux Falls. 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 Sioux Falls. Reviews last updated August 18, 2025.
Peruse reviews from past customers who have flown with Delta, United Airlines, and American Airlines from St. Louis to Sioux Falls to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,981 reviews

Boarding

8.2

Overall

8.0

Comfort

7.9

Food

7.3

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,981 reviews
Delta
8.0
Very good
7,981 reviews

Boarding

8.2

Overall

8.0

Comfort

7.9

Food

7.3

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
United Airlines
7.4
Good
8,925 reviews
Delta
8.0
Very good
7,981 reviews

Boarding

8.2

Overall

8.0

Comfort

7.9

Food

7.3

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,981 reviews

Boarding

8.2

Overall

8.0

Comfort

7.9

Food

7.3

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Related info for your journey

Find useful and relevant information for your journey from St. Louis to Sioux Falls. 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 St. Louis to Sioux Falls?

    A quick flight from St. Louis to Sioux Falls can take about 4h 42m. United Airlines provides one of the quickest options available for as low as $227. The distance between St. Louis and Sioux Falls is about 470 mi. 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 St. Louis to Sioux Falls round-trip?

    According to our current data, American Airlines ($213), Delta ($228), and United Airlines ($245) offers the cheapest pricing from St. Louis to Sioux Falls. American Airlines is 36% cheaper than the average price of flights available within the next 90 days to this destination.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from St. Louis to Sioux Falls 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 St. Louis to Sioux Falls?

    Currently, September is the cheapest month in which you can book a flight from St. Louis to Sioux Falls (average of $334). Flying from St. Louis to Sioux Falls in December is currently the most expensive (average of $446). 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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Alternative routes for St. Louis to Sioux Falls

See prices for flight routes from nearby airports that may be better suited for you.
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Springfield to Sioux Falls flights

Top 3 airlines flying from St. Louis to Sioux Falls

Discover the top 3 airlines that operate flights from St. Louis to Sioux Falls. 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 August 18, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$213Average$348FlexibilityNo cancel feeOn-time71%
DeltaCheapest$228Average$268FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$245Average$344FlexibilityNo cancel feeOn-time69%

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