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Cheap flights from St. Louis to Sioux Falls from $218

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from St. Louis to Sioux Falls departing on 12/20. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from St. Louis to Sioux Falls

Cheap round-trip flights

Enter your travel dates to find the best prices.
American Airlines Logo
8:01 pm - 12:01 am
STL
-
FSD
4h 00m1 stop
American Airlines Logo
5:35 pm - 10:59 pm
FSD
-
STL
5h 24m1 stop
$229American Airlines
Mon, Jan 5 - Mon, Jan 12
American Airlines Logo
8:01 pm - 12:01 am
STL
-
FSD
4h 00m1 stop
American Airlines Logo
6:15 pm - 10:20 am
FSD
-
STL
16h 05m1 stop
$249American Airlines
Thu, Jan 1 - Thu, Jan 8
United Airlines Logo
4:37 pm - 11:43 pm
STL
-
FSD
7h 06m1 stop
United Airlines Logo
6:16 pm - 10:43 pm
FSD
-
STL
4h 27m1 stop
$255United Airlines
Wed, Dec 17 - Sun, Dec 21
American Airlines Logo
8:01 pm - 12:01 am
STL
-
FSD
4h 00m1 stop
American Airlines Logo
5:35 pm - 10:59 pm
FSD
-
STL
5h 24m1 stop
$264American Airlines
Mon, Jan 5 - Mon, Jan 12
American Airlines Logo
8:01 pm - 12:01 am
STL
-
FSD
4h 00m1 stop
American Airlines Logo
5:35 pm - 10:59 pm
FSD
-
STL
5h 24m1 stop
$278American Airlines
Mon, Jan 5 - Mon, Jan 12
United Airlines Logo
2:45 pm - 8:00 pm
STL
-
FSD
5h 15m1 stop
United Airlines Logo
6:16 pm - 10:43 pm
FSD
-
STL
4h 27m1 stop
$289United Airlines
Thu, Dec 18 - Mon, Dec 22
Delta Logo
11:23 am - 3:37 pm
STL
-
FSD
4h 14m1 stop
Delta Logo
8:03 am - 8:43 pm
FSD
-
STL
12h 40m2 stops
$292Delta
Sat, Jan 24 - Wed, Jan 28
Delta Logo
6:05 am - 12:33 pm
STL
-
FSD
6h 28m1 stop
Delta Logo
1:02 pm - 4:45 pm
FSD
-
STL
3h 43m1 stop
$299Delta
Thu, Jan 1 - Thu, Jan 8
Multiple Airlines Logo
9:50 am - 9:52 am
STL
-
FSD
24h 02m2 stops
Multiple Airlines Logo
7:45 pm - 10:02 am
FSD
-
STL
14h 17m1 stop
$309Multiple Airlines
Thu, Jan 1 - Thu, Jan 8
American Airlines Logo
5:16 am - 12:28 pm
STL
-
FSD
7h 12m1 stop
American Airlines Logo
7:29 pm - 11:55 pm
FSD
-
STL
4h 26m1 stop
$319American Airlines
Mon, Dec 22 - Fri, Dec 26

United Airlines flights from St. Louis to Sioux Falls

Our best United Airlines deals on St. Louis to Sioux Falls flight tickets
United Airlines
Dec 17
STL4:37 pmLambert-St Louis
7h 06m
1 stop
FSD11:43 pmSioux Falls Joe Foss Field
Dec 21
FSD6:16 pmSioux Falls Joe Foss Field
4h 27m
1 stop
STL10:43 pmLambert-St Louis
$255
Find similar
United Airlines
Dec 18
STL2:45 pmLambert-St Louis
5h 15m
1 stop
FSD8:00 pmSioux Falls Joe Foss Field
Dec 22
FSD6:16 pmSioux Falls Joe Foss Field
4h 27m
1 stop
STL10:43 pmLambert-St Louis
$289
Find similar
United Airlines
Jan 8
STL8:45 amLambert-St Louis
7h 52m
1 stop
FSD4:37 pmSioux Falls Joe Foss Field
Jan 12
FSD5:18 pmSioux Falls Joe Foss Field
27h 40m
1 stop
STL8:58 pmLambert-St Louis
$371
Find similar

Delta flights from St. Louis to Sioux Falls

Our best Delta deals on St. Louis to Sioux Falls flight tickets
Delta
Jan 24
STL11:23 amLambert-St Louis
4h 14m
1 stop
FSD3:37 pmSioux Falls Joe Foss Field
Jan 28
FSD8:03 amSioux Falls Joe Foss Field
12h 40m
2 stops
STL8:43 pmLambert-St Louis
$292
Find similar
Delta
Jan 1
STL6:05 amLambert-St Louis
6h 28m
1 stop
FSD12:33 pmSioux Falls Joe Foss Field
Jan 8
FSD1:02 pmSioux Falls Joe Foss Field
3h 43m
1 stop
STL4:45 pmLambert-St Louis
$299
Find similar

momondo 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, momondo users made 832,500 searches. Data last updated December 4, 2025.
Use the filters below to find and compare flights from St. Louis to Sioux Falls that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

St. LouisSioux Falls

STL - FSD

STLFSD

Lambert-St Louis

Mon 1/5

8:01 pm-12:01 am

1 stop4h 00m

Sioux Falls Joe Foss Field

Mon 1/12

5:35 pm-10:59 pm

1 stop5h 24m

$229

St. LouisSioux Falls

STL - FSD

STLFSD

Lambert-St Louis

Thu 1/1

8:01 pm-12:01 am

1 stop4h 00m

Sioux Falls Joe Foss Field

Thu 1/8

6:15 pm-10:20 am

1 stop16h 05m

$249

St. LouisSioux Falls

STL - FSD

STLFSD

Lambert-St Louis

Wed 12/17

4:37 pm-11:43 pm

1 stop7h 06m

Sioux Falls Joe Foss Field

Sun 12/21

6:16 pm-10:43 pm

1 stop4h 27m

$255

St. LouisSioux Falls

STL - FSD

STLFSD

Lambert-St Louis

Mon 1/5

8:01 pm-12:01 am

1 stop4h 00m

Sioux Falls Joe Foss Field

Mon 1/12

5:35 pm-10:59 pm

1 stop5h 24m

$264

St. LouisSioux Falls

STL - FSD

STLFSD

Lambert-St Louis

Mon 1/5

8:01 pm-12:01 am

1 stop4h 00m

Sioux Falls Joe Foss Field

Mon 1/12

5:35 pm-10:59 pm

1 stop5h 24m

$278

St. LouisSioux Falls

STL - FSD

STLFSD

Lambert-St Louis

Thu 12/18

2:45 pm-8:00 pm

1 stop5h 15m

Sioux Falls Joe Foss Field

Mon 12/22

6:16 pm-10:43 pm

1 stop4h 27m

$289

St. LouisSioux Falls

STL - FSD

STLFSD

Lambert-St Louis

Sat 1/24

11:23 am-3:37 pm

1 stop4h 14m

Sioux Falls Joe Foss Field

Wed 1/28

8:03 am-8:43 pm

2 stops12h 40m

$292

St. LouisSioux Falls

STL - FSD

STLFSD

Lambert-St Louis

Thu 1/1

6:05 am-12:33 pm

1 stop6h 28m

Sioux Falls Joe Foss Field

Thu 1/8

1:02 pm-4:45 pm

1 stop3h 43m

$299

St. LouisSioux Falls

STL - FSD

STLFSD

Lambert-St Louis

Thu 1/1

9:50 am-9:52 am

2 stops24h 02m

Sioux Falls Joe Foss Field

Thu 1/8

7:45 pm-10:02 am

1 stop14h 17m

$309

St. LouisSioux Falls

STL - FSD

STLFSD

Lambert-St Louis

Mon 12/22

5:16 am-12:28 pm

1 stop7h 12m

Sioux Falls Joe Foss Field

Fri 12/26

7:29 pm-11:55 pm

1 stop4h 26m

$319

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 15 resultsSorted by cheapest first
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See travel insights to Sioux Falls from

How to get the cheapest flight ticket from St. Louis to Sioux Falls

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 St. Louis and Sioux Falls?

What is the cheapest month to fly to Sioux Falls?

The cheapest month to fly to Sioux Falls from St. Louis is in February. Flight prices, which tend to average around $228, are often lower during this time because this is during the off-season. If you’re not able to fly to Sioux Falls in February, then January is your next best option. Flight prices from St. Louis to Sioux Falls during January average around $268.

What is the cheapest day to depart on your flight to Sioux Falls?

The cheapest day to depart on your flight to Sioux Falls is on a Saturday when prices can be found for as low as $245. This is often the case because there is less demand to fly during this day of the week. On the other hand, Monday is the most expensive day to depart from St. Louis because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $540.

What is the cheapest time of day to depart on your flight to Sioux Falls?

Our most recent data shows that the best time of day to fly to Sioux Falls is in the afternoon. Flights from St. Louis to Sioux Falls during this time can be as low as $298. If you have a flexible travel schedule, then try to avoid flying at noon when prices are $614 on average. Flights to Sioux Falls from St. Louis at noon are generally more expensive because this time of day is more convenient for travelers’ schedules.

When to book flights from St. Louis to Sioux Falls

Are you open to changing your travel dates? Check out the ideal times to fly from St. Louis to Sioux Falls according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap St. Louis to Sioux Falls (STL to FSD) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from St. Louis to Sioux Falls

Fastest flight time

4h 21m

Direct flights

None
The fastest flight from St. Louis to Sioux Falls takes 4h 21m
There are no direct flights from St. Louis to Sioux Falls. There are no popular flight routes from St. Louis to Sioux Falls.
Search flight deals

  • How far is Lambert-St Louis to Sioux Falls Joe Foss Field by plane?

    A flight from Lambert-St Louis to Sioux Falls Joe Foss Field will travel around 480.2 mi. By plane, this route typically takes 3h 58m.

  • When did momondo last update prices for flights from Lambert-St Louis Airport to Sioux Falls Joe Foss Field Airport?

    Prices for flights from Lambert-St Louis Airport to Sioux Falls Joe Foss Field Airport are refreshed on a daily basis.

  • How many operators does momondo search for flights from Lambert-St Louis Airport to Sioux Falls Joe Foss Field Airport?

  • How old do you have to be to fly from Lambert-St Louis Airport to Sioux Falls Joe Foss Field Airport?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Lambert-St Louis Airport to Sioux Falls Joe Foss Field Airport.

  • What documentation or ID do you need to fly to Sioux Falls Joe Foss Field Airport?

    The travel and health documents you'll need for your trip to Sioux Falls Joe Foss Field Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Sioux Falls Joe Foss Field Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular airline from St. Louis to Sioux Falls?

Best airlines flying from St. Louis to Sioux Falls

Compare and see reviews for airlines that fly from St. Louis to Sioux Falls with momondo
Airline
Rating
Free Cancellation
Price
American AirlinesPriceFrom $213Free CancellationRating
7.2
11,045 reviews
Search American Airlines flights
DeltaPriceFrom $218Free CancellationRating
7.9
8,011 reviews
Search Delta flights
United AirlinesPriceFrom $253Free CancellationRating
7.4
9,063 reviews
Search United Airlines flights

Traveling to a place near Sioux Falls?

Book flights to Sioux Falls if you plan to visit one of these locations
Yankton
Marshall
Worthington

Why use momondo?

Why should I use momondo to find a flight deal from St. Louis to Sioux Falls?

Finding the right flight to Sioux Falls from St. Louis is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Sioux Falls quick and easy, saving you time and money.

Can I find flights from St. Louis to Sioux Falls with flexible booking policies on momondo?

momondo does allow users to show only those flights to Sioux Falls from St. Louis which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from St. Louis to Sioux Falls?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from St. Louis to Sioux Falls.

I’m not ready to book a flight from St. Louis to Sioux Falls right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of St. Louis to Sioux Falls flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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