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Cheap flights from South Dakota to St. Louis from $138

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from South Dakota to St. Louis departing on 4/6. 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
1 adult, Economy, 0 bags

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Find the cheapest flights from South Dakota to St. Louis

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
7:40 am - 12:07 pm
FSD
-
STL
4h 27m
1 stop
United Airlines Logo
5:33 pm - 10:07 pm
STL
-
FSD
4h 34m
1 stop
$309United Airlines
Sat, Jul 11 - Wed, Jul 15
American Airlines Logo
4:57 pm - 10:59 pm
RAP
-
STL
5h 02m
1 stop
American Airlines Logo
5:51 am - 11:23 am
STL
-
RAP
6h 32m
1 stop
$309American Airlines
Mon, Apr 20 - Mon, Apr 27
Delta Logo
6:00 am - 2:24 pm
RAP
-
STL
7h 24m
1 stop
Delta Logo
5:35 pm - 10:20 pm
STL
-
RAP
5h 45m
1 stop
$314Delta
Wed, Apr 8 - Mon, Apr 13
American Airlines Logo
3:17 pm - 10:17 pm
FSD
-
STL
7h 00m
1 stop
American Airlines Logo
5:20 am - 12:56 pm
STL
-
FSD
7h 36m
1 stop
$319American Airlines
Thu, Apr 9 - Mon, Apr 13
United Airlines Logo
8:30 am - 4:56 pm
RAP
-
STL
7h 26m
1 stop
United Airlines Logo
6:30 am - 10:36 am
STL
-
RAP
5h 06m
1 stop
$319United Airlines
Wed, Apr 8 - Sun, Apr 12
United Airlines Logo
12:00 pm - 9:13 pm
RAP
-
STL
8h 13m
2 stops
United Airlines Logo
4:30 pm - 10:28 pm
STL
-
RAP
6h 58m
1 stop
$324United Airlines
Fri, Apr 10 - Tue, Apr 14
American Airlines Logo
7:39 pm - 11:46 pm
FSD
-
STL
4h 07m
1 stop
American Airlines Logo
5:20 am - 12:57 pm
STL
-
FSD
7h 37m
1 stop
$333American Airlines
Thu, Apr 9 - Sun, Apr 12
American Airlines Logo
7:39 pm - 11:46 pm
FSD
-
STL
4h 07m
1 stop
American Airlines Logo
7:12 am - 12:57 pm
STL
-
FSD
5h 45m
1 stop
$334American Airlines
Thu, Apr 16 - Sun, Apr 19
Delta Logo
3:55 pm - 11:14 pm
RAP
-
STL
6h 19m
1 stop
Delta Logo
5:35 pm - 10:20 pm
STL
-
RAP
5h 45m
1 stop
$344Delta
Thu, Apr 16 - Sat, Apr 25
United Airlines Logo
6:00 am - 10:48 am
FSD
-
STL
4h 48m
1 stop
United Airlines Logo
8:30 pm - 12:49 am
STL
-
FSD
4h 19m
1 stop
$361United Airlines
Sat, May 2 - Wed, May 6

American Airlines flights from South Dakota to St. Louis

Our best American Airlines deals on South Dakota to St. Louis flight tickets
American Airlines
Apr 20
RAP4:57 pmRapid City
5h 02m
1 stop
STL10:59 pmLambert-St Louis
Apr 27
STL5:51 amLambert-St Louis
6h 32m
1 stop
RAP11:23 amRapid City
$309
American Airlines
Apr 9
FSD3:17 pmSioux Falls Joe Foss Field
7h 00m
1 stop
STL10:17 pmLambert-St Louis
Apr 13
STL5:20 amLambert-St Louis
7h 36m
1 stop
FSD12:56 pmSioux Falls Joe Foss Field
$319
American Airlines
Apr 9
FSD7:39 pmSioux Falls Joe Foss Field
4h 07m
1 stop
STL11:46 pmLambert-St Louis
Apr 12
STL5:20 amLambert-St Louis
7h 37m
1 stop
FSD12:57 pmSioux Falls Joe Foss Field
$333

Delta flights from South Dakota to St. Louis

Our best Delta deals on South Dakota to St. Louis flight tickets
Delta
Apr 8
RAP6:00 amRapid City
7h 24m
1 stop
STL2:24 pmLambert-St Louis
Apr 13
STL5:35 pmLambert-St Louis
5h 45m
1 stop
RAP10:20 pmRapid City
$314
Delta
Apr 16
RAP3:55 pmRapid City
6h 19m
1 stop
STL11:14 pmLambert-St Louis
Apr 25
STL5:35 pmLambert-St Louis
5h 45m
1 stop
RAP10:20 pmRapid City
$344
Delta
Apr 6
RAP4:01 pmRapid City
6h 24m
1 stop
STL11:25 pmLambert-St Louis
Apr 10
STL6:29 amLambert-St Louis
4h 51m
1 stop
RAP10:20 amRapid City
$521

momondo Fare Finder

 
Customize your flight search to find flights from South Dakota to St. Louis 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 March 26, 2026.
Use the filters below to find and compare flights from South Dakota to St. Louis that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

Sioux FallsSt. Louis

FSD - STL

FSDSTL

Sioux Falls Joe Foss Field

Sat 7/11

7:40 am-12:07 pm

1 stop4h 27m

Lambert-St Louis

Wed 7/15

5:33 pm-10:07 pm

1 stop4h 34m

$309

Rapid CitySt. Louis

RAP - STL

RAPSTL

Rapid City

Mon 4/20

4:57 pm-10:59 pm

1 stop5h 02m

Lambert-St Louis

Mon 4/27

5:51 am-11:23 am

1 stop6h 32m

$309

Rapid CitySt. Louis

RAP - STL

RAPSTL

Rapid City

Wed 4/8

6:00 am-2:24 pm

1 stop7h 24m

Lambert-St Louis

Mon 4/13

5:35 pm-10:20 pm

1 stop5h 45m

$314

Sioux FallsSt. Louis

FSD - STL

FSDSTL

Sioux Falls Joe Foss Field

Thu 4/9

3:17 pm-10:17 pm

1 stop7h 00m

Lambert-St Louis

Mon 4/13

5:20 am-12:56 pm

1 stop7h 36m

$319

Rapid CitySt. Louis

RAP - STL

RAPSTL

Rapid City

Wed 4/8

8:30 am-4:56 pm

1 stop7h 26m

Lambert-St Louis

Sun 4/12

6:30 am-10:36 am

1 stop5h 06m

$319

Rapid CitySt. Louis

RAP - STL

RAPSTL

Rapid City

Fri 4/10

12:00 pm-9:13 pm

2 stops8h 13m

Lambert-St Louis

Tue 4/14

4:30 pm-10:28 pm

1 stop6h 58m

$324

Sioux FallsSt. Louis

FSD - STL

FSDSTL

Sioux Falls Joe Foss Field

Thu 4/9

7:39 pm-11:46 pm

1 stop4h 07m

Lambert-St Louis

Sun 4/12

5:20 am-12:57 pm

1 stop7h 37m

$333

Sioux FallsSt. Louis

FSD - STL

FSDSTL

Sioux Falls Joe Foss Field

Thu 4/16

7:39 pm-11:46 pm

1 stop4h 07m

Lambert-St Louis

Sun 4/19

7:12 am-12:57 pm

1 stop5h 45m

$334

Rapid CitySt. Louis

RAP - STL

RAPSTL

Rapid City

Thu 4/16

3:55 pm-11:14 pm

1 stop6h 19m

Lambert-St Louis

Sat 4/25

5:35 pm-10:20 pm

1 stop5h 45m

$344

Sioux FallsSt. Louis

FSD - STL

FSDSTL

Sioux Falls Joe Foss Field

Sat 5/2

6:00 am-10:48 am

1 stop4h 48m

Lambert-St Louis

Wed 5/6

8:30 pm-12:49 am

1 stop4h 19m

$361

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 St. Louis from

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

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 St. Louis?

In general, September is the cheapest month to fly from South Dakota to St. Louis. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $278. The month of August is another great option to travel to St. Louis, with average flight prices from South Dakota averaging around $288.

Can stopping save me money on South Dakota to St. Louis flights?

You could potentially save up to 87% on your flight if you consider stops on a South Dakota to St. Louis flight.

Cheap South Dakota to St. Louis flight deals and tips

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

Fastest flight time

3h 34m

Direct flights

None
The fastest flight from South Dakota to St. Louis takes 3h 34m
There are no direct flights from South Dakota to St. Louis. There are no popular flight routes from South Dakota to St. Louis.
Search flight deals

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

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

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

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

  • What documentation or ID do you need to fly to Lambert-St Louis Airport?

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

Best airlines flying from South Dakota to St. Louis

Compare and see reviews for airlines that fly from South Dakota to St. Louis with momondo
Airline
Rating
Free Cancellation
Price
DeltaPriceFrom $174Free CancellationRating
7.9
8,331 reviews
Search Delta flights
American AirlinesPriceFrom $243Free CancellationRating
7.1
11,495 reviews
Search American Airlines flights
United AirlinesPriceFrom $257Free CancellationRating
7.4
9,483 reviews
Search United Airlines flights

Traveling to a place near St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
St. Charles
Chesterfield
Hermann
Fairview Heights
Florissant
Maryland Heights
O'Fallon
Collinsville
St. Peters
Wentzville
Alton
Fenton
Farmington
Clayton
Festus
Edwardsville
Eureka
Litchfield
Shrewsbury
Grafton

Why use momondo?

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

Finding the right flight to St. Louis from South Dakota 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 St. Louis quick and easy, saving you time and money.

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

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

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

Once you have performed a search for South Dakota to St. Louis flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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

Price alerts on flights to St. Louis from South Dakota are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

An easier way to manage your St. Louis trip

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