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Cheap flights from St. Louis to Sioux Falls from $126

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 2/4. 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.
Frontier Logo
2:51 pm - 1:21 pm
STL
-
FSD
22h 30m1 stop
Frontier Logo
2:16 pm - 1:09 pm
FSD
-
STL
22h 53m1 stop
$168Frontier
Sat, Feb 21 - Sun, Mar 1
Frontier Logo
3:49 pm - 1:21 pm
STL
-
FSD
21h 32m2 stops
Frontier Logo
2:16 pm - 1:09 pm
FSD
-
STL
22h 53m1 stop
$216Frontier
Sat, Feb 21 - Sun, Mar 1
United Airlines Logo
2:45 pm - 8:24 pm
STL
-
FSD
5h 39m1 stop
United Airlines Logo
7:30 am - 2:28 pm
FSD
-
STL
6h 58m1 stop
$245United Airlines
Fri, Feb 6 - Sat, Feb 7
Delta Logo
5:25 pm - 11:04 pm
STL
-
FSD
5h 39m1 stop
Delta Logo
5:00 am - 10:43 am
FSD
-
STL
5h 43m1 stop
$249Delta
Tue, Feb 3 - Tue, Feb 10
American Airlines Logo
6:00 am - 12:53 pm
STL
-
FSD
6h 53m1 stop
American Airlines Logo
5:35 pm - 10:55 pm
FSD
-
STL
5h 20m1 stop
$259American Airlines
Thu, Jan 22 - Mon, Jan 26
American Airlines Logo
9:37 am - 1:36 pm
STL
-
FSD
3h 59m1 stop
American Airlines Logo
7:42 pm - 11:48 pm
FSD
-
STL
4h 06m1 stop
$274American Airlines
Fri, Feb 20 - Sun, Feb 22
United Airlines Logo
11:25 am - 5:21 pm
STL
-
FSD
5h 56m1 stop
United Airlines Logo
3:15 pm - 9:05 pm
FSD
-
STL
5h 50m1 stop
$299United Airlines
Wed, Feb 18 - Sat, Feb 21
United Airlines Logo
11:25 am - 5:21 pm
STL
-
FSD
5h 56m1 stop
United Airlines Logo
3:15 pm - 9:05 pm
FSD
-
STL
5h 50m1 stop
$309United Airlines
Wed, Feb 18 - Sat, Feb 21
Multiple Airlines Logo
9:50 am - 6:12 pm
STL
-
FSD
8h 22m2 stops
Multiple Airlines Logo
7:44 pm - 8:02 pm
FSD
-
STL
24h 18m1 stop
$322Multiple Airlines
Fri, Feb 20 - Sun, Feb 22
Multiple Airlines Logo
3:46 pm - 10:53 am
STL
-
FSD
19h 07m2 stops
Multiple Airlines Logo
11:43 am - 8:37 pm
FSD
-
STL
8h 54m1 stop
$339Multiple Airlines
Wed, Feb 4 - Sun, Feb 8

United Airlines flights from St. Louis to Sioux Falls

Our best United Airlines deals on St. Louis to Sioux Falls flight tickets
United Airlines
Feb 6
STL2:45 pmLambert-St Louis
5h 39m
1 stop
FSD8:24 pmSioux Falls Joe Foss Field
Feb 7
FSD7:30 amSioux Falls Joe Foss Field
6h 58m
1 stop
STL2:28 pmLambert-St Louis
$245
United Airlines
Feb 18
STL11:25 amLambert-St Louis
5h 56m
1 stop
FSD5:21 pmSioux Falls Joe Foss Field
Feb 21
FSD3:15 pmSioux Falls Joe Foss Field
5h 50m
1 stop
STL9:05 pmLambert-St Louis
$299
United Airlines
Feb 18
STL11:25 amLambert-St Louis
5h 56m
1 stop
FSD5:21 pmSioux Falls Joe Foss Field
Feb 21
FSD3:15 pmSioux Falls Joe Foss Field
5h 50m
1 stop
STL9:05 pmLambert-St Louis
$309

Delta flights from St. Louis to Sioux Falls

Our best Delta deals on St. Louis to Sioux Falls flight tickets
Delta
Feb 3
STL5:25 pmLambert-St Louis
5h 39m
1 stop
FSD11:04 pmSioux Falls Joe Foss Field
Feb 10
FSD5:00 amSioux Falls Joe Foss Field
5h 43m
1 stop
STL10:43 amLambert-St Louis
$249
Delta
Mar 9
STL6:29 amLambert-St Louis
6h 24m
1 stop
FSD12:53 pmSioux Falls Joe Foss Field
Mar 11
FSD8:00 amSioux Falls Joe Foss Field
6h 24m
1 stop
STL2:24 pmLambert-St Louis
$475

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 January 8, 2026.
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

Sat 2/21

2:51 pm-1:21 pm

1 stop22h 30m

Sioux Falls Joe Foss Field

Sun 3/1

2:16 pm-1:09 pm

1 stop22h 53m

$168

St. LouisSioux Falls

STL - FSD

STLFSD

Lambert-St Louis

Sat 2/21

3:49 pm-1:21 pm

2 stops21h 32m

Sioux Falls Joe Foss Field

Sun 3/1

2:16 pm-1:09 pm

1 stop22h 53m

$216

St. LouisSioux Falls

STL - FSD

STLFSD

Lambert-St Louis

Fri 2/6

2:45 pm-8:24 pm

1 stop5h 39m

Sioux Falls Joe Foss Field

Sat 2/7

7:30 am-2:28 pm

1 stop6h 58m

$245

St. LouisSioux Falls

STL - FSD

STLFSD

Lambert-St Louis

Tue 2/3

5:25 pm-11:04 pm

1 stop5h 39m

Sioux Falls Joe Foss Field

Tue 2/10

5:00 am-10:43 am

1 stop5h 43m

$249

St. LouisSioux Falls

STL - FSD

STLFSD

Lambert-St Louis

Thu 1/22

6:00 am-12:53 pm

1 stop6h 53m

Sioux Falls Joe Foss Field

Mon 1/26

5:35 pm-10:55 pm

1 stop5h 20m

$259

St. LouisSioux Falls

STL - FSD

STLFSD

Lambert-St Louis

Fri 2/20

9:37 am-1:36 pm

1 stop3h 59m

Sioux Falls Joe Foss Field

Sun 2/22

7:42 pm-11:48 pm

1 stop4h 06m

$274

St. LouisSioux Falls

STL - FSD

STLFSD

Lambert-St Louis

Wed 2/18

11:25 am-5:21 pm

1 stop5h 56m

Sioux Falls Joe Foss Field

Sat 2/21

3:15 pm-9:05 pm

1 stop5h 50m

$299

St. LouisSioux Falls

STL - FSD

STLFSD

Lambert-St Louis

Wed 2/18

11:25 am-5:21 pm

1 stop5h 56m

Sioux Falls Joe Foss Field

Sat 2/21

3:15 pm-9:05 pm

1 stop5h 50m

$309

St. LouisSioux Falls

STL - FSD

STLFSD

Lambert-St Louis

Fri 2/20

9:50 am-6:12 pm

2 stops8h 22m

Sioux Falls Joe Foss Field

Sun 2/22

7:44 pm-8:02 pm

1 stop24h 18m

$322

St. LouisSioux Falls

STL - FSD

STLFSD

Lambert-St Louis

Wed 2/4

3:46 pm-10:53 am

2 stops19h 07m

Sioux Falls Joe Foss Field

Sun 2/8

11:43 am-8:37 pm

1 stop8h 54m

$339

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 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 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 May is your next best option. Flight prices from St. Louis to Sioux Falls during May average around $293.

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

5h 04m

Direct flights

None
The fastest flight from St. Louis to Sioux Falls takes 5h 04m
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 5h 04m.

  • 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
11,094 reviews
Search American Airlines flights
DeltaPriceFrom $216Free CancellationRating
7.9
8,025 reviews
Search Delta flights
United AirlinesPriceFrom $253Free CancellationRating
7.4
9,139 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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