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Cheap flights from St. Louis to South Dakota from $136

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 South Dakota departing on 10/25. 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 South Dakota

Cheap round-trip flights

United Airlines Logo
5:15 am - 10:41 amSTL-FSD
5h 26m1 stop
United Airlines Logo
2:08 pm - 8:46 pmFSD-STL
6h 38m1 stop
$239United Airlines
Find Deal
Tue, Sep 16 - Sat, Sep 20
United Airlines Logo
4:40 pm - 9:59 pmSTL-RAP
6h 19m1 stop
United Airlines Logo
5:50 pm - 11:58 pmRAP-STL
5h 08m1 stop
$249United Airlines
Find Deal
Tue, Sep 23 - Tue, Sep 30
United Airlines Logo
4:50 pm - 10:12 pmSTL-RAP
6h 22m1 stop
United Airlines Logo
8:30 am - 4:32 pmRAP-STL
7h 02m1 stop
$279United Airlines
Find Deal
Thu, Sep 25 - Fri, Oct 3
Frontier Logo
7:52 pm - 6:33 pmSTL-FSD
22h 41m1 stop
Frontier Logo
7:28 pm - 9:07 amFSD-STL
13h 39m1 stop
$315Frontier
Find Deal
Thu, Oct 23 - Mon, Oct 27
American Airlines Logo
9:56 am - 8:53 pmSTL-RAP
11h 57m2 stops
American Airlines Logo
6:12 pm - 11:48 pmRAP-STL
4h 36m1 stop
$327American Airlines
Find Deal
Tue, Sep 23 - Mon, Sep 29
Logo
7:52 pm - 8:01 pmSTL-FSD
24h 09m2 stops
Logo
7:28 pm - 9:07 amFSD-STL
13h 39m1 stop
$337
Find Deal
Thu, Oct 23 - Mon, Oct 27
American Airlines Logo
7:23 am - 12:42 pmSTL-RAP
6h 19m1 stop
American Airlines Logo
6:12 pm - 11:48 pmRAP-STL
4h 36m1 stop
$375American Airlines
Find Deal
Tue, Sep 23 - Mon, Sep 29
Logo
9:50 am - 8:02 pmSTL-FSD
10h 12m2 stops
Logo
2:23 pm - 9:07 amFSD-STL
18h 44m1 stop
$382
Find Deal
Mon, Oct 27 - Thu, Oct 30
Delta Logo
6:04 am - 11:02 amSTL-RAP
5h 58m1 stop
Delta Logo
4:15 pm - 10:08 pmRAP-STL
4h 53m1 stop
$574Delta
Find Deal
Sat, Dec 20 - Thu, Jan 1
Delta Logo
6:00 am - 10:07 amSTL-FSD
4h 07m1 stop
Delta Logo
5:00 am - 8:37 amFSD-STL
3h 37m1 stop
$598Delta
Find Deal
Sun, Sep 14 - Thu, Sep 18

United Airlines flights from St. Louis to South Dakota

Our best United Airlines deals on St. Louis to South Dakota flight tickets
United Airlines
Sep 16
STL5:15 amLambert-St Louis
5h 26m
1 stop
FSD10:41 amSioux Falls Joe Foss Field
Sep 20
FSD2:08 pmSioux Falls Joe Foss Field
6h 38m
1 stop
STL8:46 pmLambert-St Louis
$239
Find similar
United Airlines
Sep 23
STL4:40 pmLambert-St Louis
6h 19m
1 stop
RAP9:59 pmRapid City
Sep 30
RAP5:50 pmRapid City
5h 08m
1 stop
STL11:58 pmLambert-St Louis
$249
Find similar
United Airlines
Sep 25
STL4:50 pmLambert-St Louis
6h 22m
1 stop
RAP10:12 pmRapid City
Oct 3
RAP8:30 amRapid City
7h 02m
1 stop
STL4:32 pmLambert-St Louis
$279
Find similar

American Airlines flights from St. Louis to South Dakota

Our best American Airlines deals on St. Louis to South Dakota flight tickets
American Airlines
Sep 6
STL7:16 amLambert-St Louis
5h 22m
1 stop
FSD12:38 pmSioux Falls Joe Foss Field
Sep 7
FSD7:00 amSioux Falls Joe Foss Field
4h 52m
1 stop
STL11:52 amLambert-St Louis
$244
Find similar
American Airlines
Sep 23
STL9:56 amLambert-St Louis
11h 57m
2 stops
RAP8:53 pmRapid City
Sep 29
RAP6:12 pmRapid City
4h 36m
1 stop
STL11:48 pmLambert-St Louis
$327
Find similar
American Airlines
Sep 23
STL7:23 amLambert-St Louis
6h 19m
1 stop
RAP12:42 pmRapid City
Sep 29
RAP6:12 pmRapid City
4h 36m
1 stop
STL11:48 pmLambert-St Louis
$375
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from St. Louis to South Dakota 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 September 1, 2025.
Use the filters below to find and compare flights from St. Louis to South Dakota that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

St. LouisSioux Falls

STL - FSD

STLFSD

Lambert-St Louis

Tue 9/16

5:15 am-10:41 am

1 stop5h 26m

Sioux Falls Joe Foss Field

Sat 9/20

2:08 pm-8:46 pm

1 stop6h 38m

$239

St. LouisRapid City

STL - RAP

STLRAP

Lambert-St Louis

Tue 9/23

4:40 pm-9:59 pm

1 stop6h 19m

Rapid City

Tue 9/30

5:50 pm-11:58 pm

1 stop5h 08m

$249

St. LouisRapid City

STL - RAP

STLRAP

Lambert-St Louis

Thu 9/25

4:50 pm-10:12 pm

1 stop6h 22m

Rapid City

Fri 10/3

8:30 am-4:32 pm

1 stop7h 02m

$279

St. LouisSioux Falls

STL - FSD

STLFSD

Lambert-St Louis

Thu 10/23

7:52 pm-6:33 pm

1 stop22h 41m

Sioux Falls Joe Foss Field

Mon 10/27

7:28 pm-9:07 am

1 stop13h 39m

$315

St. LouisRapid City

STL - RAP

STLRAP

Lambert-St Louis

Tue 9/23

9:56 am-8:53 pm

2 stops11h 57m

Rapid City

Mon 9/29

6:12 pm-11:48 pm

1 stop4h 36m

$327

St. LouisSioux Falls

STL - FSD

STLFSD

Lambert-St Louis

Thu 10/23

7:52 pm-8:01 pm

2 stops24h 09m

Sioux Falls Joe Foss Field

Mon 10/27

7:28 pm-9:07 am

1 stop13h 39m

$337

St. LouisRapid City

STL - RAP

STLRAP

Lambert-St Louis

Tue 9/23

7:23 am-12:42 pm

1 stop6h 19m

Rapid City

Mon 9/29

6:12 pm-11:48 pm

1 stop4h 36m

$375

St. LouisSioux Falls

STL - FSD

STLFSD

Lambert-St Louis

Mon 10/27

9:50 am-8:02 pm

2 stops10h 12m

Sioux Falls Joe Foss Field

Thu 10/30

2:23 pm-9:07 am

1 stop18h 44m

$382

St. LouisRapid City

STL - RAP

STLRAP

Lambert-St Louis

Sat 12/20

6:04 am-11:02 am

1 stop5h 58m

Rapid City

Thu 1/1

4:15 pm-10:08 pm

1 stop4h 53m

$574

St. LouisSioux Falls

STL - FSD

STLFSD

Lambert-St Louis

Sun 9/14

6:00 am-10:07 am

1 stop4h 07m

Sioux Falls Joe Foss Field

Thu 9/18

5:00 am-8:37 am

1 stop3h 37m

$598

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 South Dakota from

How to get the cheapest flight ticket from St. Louis to South Dakota

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 South Dakota?

The month of February is, on average, the cheapest month to fly to South Dakota from St. Louis, with most prices found around $228. If you aren’t able to travel to South Dakota during the month of February, then flying in January is also cheap. Prices for this month can be found on momondo for an average of $268.

What is the cheapest day to depart on your flight to South Dakota?

The cheapest day to depart from St. Louis to South Dakota is on a Saturday. Travelers who choose to depart for South Dakota on a Saturday will often find tickets for as low as $245. If your travel schedule is flexible, try to avoid departing on a Monday because tickets tend to average around $540. These prices are subject to change though, so be sure to set up a Price Alert for flights to South Dakota.

What is the cheapest time of day to depart on your flight to South Dakota?

The cheapest time of day to fly to South Dakota is in the afternoon when flights can be purchased for as low as $298. At noon is when there is more demand to fly to South Dakota, so prices are often more expensive at around $614 per ticket.

Cheap St. Louis to South Dakota flight deals and tips

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

Direct flights

None
There are no direct flights from St. Louis to South Dakota. There are no popular flight routes from St. Louis to South Dakota.
Search flight deals

  • When did momondo last update prices for flights from Lambert-St Louis Airport to South Dakota?

    Prices for flights from Lambert-St Louis Airport to South Dakota refresh daily.

  • How many operators does momondo search for flights from Lambert-St Louis Airport to South Dakota?

  • How old do you have to be to fly from Lambert-St Louis Airport to South Dakota?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Lambert-St Louis Airport to South Dakota.

  • What documentation or ID do you need to fly to South Dakota?

    The travel and health documents you'll need for your trip to South Dakota 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 South Dakota. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Best airlines flying from St. Louis to South Dakota

Compare and see reviews for airlines that fly from St. Louis to South Dakota with momondo
Airline
Rating
Free Cancellation
Price
American AirlinesPriceFrom $213Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
DeltaPriceFrom $218Free CancellationRating
7.9
7,974 reviews
Search Delta flights
United AirlinesPriceFrom $245Free CancellationRating
7.4
8,936 reviews
Search United Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from St. Louis to South Dakota?

It is quick and easy to find St. Louis to South Dakota flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to South Dakota that suits you.

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

Flights from St. Louis to South Dakota with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from St. Louis to South Dakota?

momondo provides multiple filters to help you find the best flight to South Dakota from St. Louis. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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

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

An easier way to manage your South Dakota trip

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