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Sioux Falls

$126+ 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 8/6. Fares are subject to change and may not be available on all flights or dates of travel.
STL — FSD
Jul 16 — Jul 231
Wed 7/16
Wed 7/23
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 July 11, 2025.

Round-trip from

$214
(Delta)

One-way from

$126
(Delta)

Popular in

June

Cheapest in

February

Average price

$278
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. 1% potential increase in price ($6 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($8 potential savings vs. average RT price).
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Average for round-trip flights in July 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 July 11, 2025.

This Delta deal was found by Cheapflights users on 7/10. 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.
Tue 8/268:46 amSTL - FSD
1 stop3h 30mDelta
Sun 8/315:00 amFSD - STL
1 stop3h 36mDelta
Deal found 7/10$214
This American Airlines deal was found by Cheapflights users on 7/10. 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.
Wed 9/37:23 amSTL - FSD
1 stop6h 06mAmerican Airlines
Sun 9/76:00 pmFSD - STL
1 stop5h 48mAmerican Airlines
Deal found 7/10$289
This Gotogate deal was found by Cheapflights users on 7/10. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/24:00 pmSTL - FSD
2 stops22h 09mFrontier
Mon 10/62:54 pmFSD - STL
1 stop18h 13mFrontier
Deal found 7/10$310
This United Airlines deal was found by Cheapflights users on 7/10. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/125:15 amSTL - FSD
1 stop5h 27mUnited Airlines
Sat 7/199:15 amFSD - STL
1 stop7h 16mUnited Airlines
Deal found 7/10$339
This Trip.com deal was found by Cheapflights users on 7/9. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/289:50 amSTL - FSD
2 stops9h 26mMultiple Airlines
Thu 7/312:57 pmFSD - STL
1 stop18h 14mMultiple Airlines
Deal found 7/9$436
This Alaska Airlines deal was found by Cheapflights users on 7/10. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/26:00 amSTL - FSD
2 stops17h 59mAlaska Airlines
Mon 10/66:00 amFSD - STL
2 stops18h 03mAlaska Airlines
Deal found 7/10$943

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 July 11, 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

Tue 8/26

8:46 am-12:16 pm

1 stop3h 30m

Sioux Falls Joe Foss Field

Sun 8/31

5:00 am-8:36 am

1 stop3h 36m

$214

St. LouisSioux Falls

STL - FSD

STLFSD

Lambert-St Louis

Wed 9/3

7:23 am-1:29 pm

1 stop6h 06m

Sioux Falls Joe Foss Field

Sun 9/7

6:00 pm-11:48 pm

1 stop5h 48m

$289

St. LouisSioux Falls

STL - FSD

STLFSD

Lambert-St Louis

Thu 10/2

4:00 pm-2:09 pm

2 stops22h 09m

Sioux Falls Joe Foss Field

Mon 10/6

2:54 pm-9:07 am

1 stop18h 13m

$310

St. LouisSioux Falls

STL - FSD

STLFSD

Lambert-St Louis

Mon 11/10

5:18 pm-9:46 pm

1 stop4h 28m

Sioux Falls Joe Foss Field

Fri 11/14

6:23 pm-10:27 am

1 stop16h 04m

$339

St. LouisSioux Falls

STL - FSD

STLFSD

Lambert-St Louis

Mon 7/28

9:50 am-7:16 pm

2 stops9h 26m

Sioux Falls Joe Foss Field

Thu 7/31

2:57 pm-9:11 am

1 stop18h 14m

$436

St. LouisSioux Falls

STL - FSD

STLFSD

Lambert-St Louis

Thu 10/2

6:00 am-11:59 pm

2 stops17h 59m

Sioux Falls Joe Foss Field

Mon 10/6

6:00 am-12:03 am

2 stops18h 03m

$943

St. LouisSioux Falls

STL - FSD

STLFSD

Lambert-St Louis

Wed 8/6

5:37 pm-11:44 pm

1 stop6h 07m

$126

St. LouisSioux Falls

STL - FSD

STLFSD

Lambert-St Louis

Sun 9/7

7:55 pm-2:09 pm

1 stop18h 14m

$145

St. LouisSioux Falls

STL - FSD

STLFSD

Lambert-St Louis

Fri 8/8

9:50 am-7:16 pm

2 stops9h 26m

$185

St. LouisSioux Falls

STL - FSD

STLFSD

Lambert-St Louis

Wed 8/6

6:06 am-9:03 pm

2 stops14h 57m

$340

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/10

Showing 1-10 of 11 results
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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 July 11, 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 July 11, 2025.
Peruse reviews from past customers who have flown with Alaska Airlines, Delta, and United 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.
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Overall

8.0

Crew

8.5

Food

7.1

Boarding

8.1

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Overall

8.0

Crew

8.5

Food

7.1

Boarding

8.1

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Delta
8.0
Very good
7,951 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Overall

8.0

Crew

8.5

Food

7.1

Boarding

8.1

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
United Airlines
7.4
Good
8,846 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Overall

8.0

Crew

8.5

Food

7.1

Boarding

8.1

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Overall

8.0

Crew

8.5

Food

7.1

Boarding

8.1

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Frontier
5.9
Fair
3,271 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Overall

8.0

Crew

8.5

Food

7.1

Boarding

8.1

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

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.

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

    According to our current data, Delta ($214), American Airlines ($229), and Frontier ($310) offers the cheapest pricing from St. Louis to Sioux Falls. Delta is 32% cheaper than the average price of flights available within the next 90 days to this destination.

  • What are the cheapest airlines to fly from St. Louis to Sioux Falls one-way?

    The cheapest airlines for a one-way flight from St. Louis to Sioux Falls are Delta ($126), Frontier ($145), and American Airlines ($340).

  • 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 July 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$213Average$348FlexibilityNo cancel feeOn-time71%
DeltaCheapest$228Average$266FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$245Average$348FlexibilityNo cancel feeOn-time69%

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