What airlines fly to St. Louis?

United Airlines, Delta and American Airlines are the top three most popular airlines that fly to St. Louis from South Dakota according to our data. United Airlines is the first choice among our users, with 43% of people opting to fly with this airline when traveling to St. Louis. Keep in mind that there are 3 different airlines that fly to St. Louis on a routine basis, so you have a few additional options to choose from.

What is the cheapest airline that flies from South Dakota to Lambert-St Louis?

Delta and United Airlines are the most popular carriers operating from South Dakota to Lambert-St Louis

How long does it take to fly to St. Louis?

Flight times from South Dakota to St. Louis vary, but if you’re flying out of Sioux Falls and flying into St. Louis (one of the most popular routes), then the duration is 3h 37m on average. Another popular route from South Dakota to St. Louis is flying from Rapid City to St. Louis, which will take roughly 4h 53m. Keep in mind that layovers or delays could extend your travel time.

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?

The number of operators available for flights from South Dakota to Lambert-St Louis Airport is 3 as of November 2025.

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.

$126 Cheap Flights from South Dakota to St. Louis in 2025/26

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One-way

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Cheap round-trip flights

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10:10 pm - 11:16 amRAP-STL

12h 06m1 stop

9:54 pm - 9:43 amSTL-RAP

12h 49m1 stop

$237Multiple Airlines

Find Deal

Thu, Nov 20 - Mon, Nov 24

5:18 am - 8:55 amFSD-STL

3h 37m1 stop

5:34 pm - 11:00 pmSTL-FSD

5h 26m1 stop

$244Delta

Find Deal

Thu, Nov 20 - Mon, Nov 24

4:10 pm - 11:25 pmRAP-STL

6h 15m1 stop

6:10 am - 10:13 amSTL-RAP

5h 03m1 stop

$249Delta

Find Deal

Tue, Mar 3 - Sat, Mar 7

10:54 am - 11:38 pmRAP-STL

11h 44m2 stops

6:10 am - 10:13 amSTL-RAP

5h 03m1 stop

$254Delta

Find Deal

Tue, Mar 3 - Sat, Mar 7

11:02 am - 9:57 pmRAP-STL

9h 55m2 stops

7:05 am - 3:45 pmSTL-RAP

9h 40m2 stops

$259Delta

Find Deal

Tue, Dec 9 - Tue, Dec 16

7:16 pm - 12:02 amFSD-STL

4h 46m1 stop

1:20 pm - 9:09 pmSTL-FSD

7h 49m1 stop

$299American Airlines

Find Deal

Fri, Nov 21 - Tue, Nov 25

5:15 am - 12:34 pmRAP-STL

6h 19m1 stop

7:00 am - 1:12 pmSTL-RAP

7h 12m1 stop

$321American Airlines

Find Deal

Thu, Dec 4 - Sun, Dec 7

8:00 am - 2:25 pmFSD-STL

6h 25m1 stop

5:27 pm - 2:40 pmSTL-FSD

21h 13m1 stop

$344United Airlines

Find Deal

Wed, Dec 3 - Fri, Dec 5

5:15 am - 2:24 pmRAP-STL

8h 09m2 stops

10:00 am - 6:43 pmSTL-RAP

9h 43m2 stops

$350United Airlines

Find Deal

Thu, Nov 20 - Mon, Nov 24

8:26 pm - 10:02 amFSD-STL

13h 36m1 stop

3:14 pm - 7:31 pmSTL-FSD

28h 17m2 stops

$359Frontier

Find Deal

Fri, Nov 21 - Tue, Nov 25

Delta flights from South Dakota to St. Louis

Our best Delta deals on South Dakota to St. Louis flight tickets

Delta

Nov 20

FSD5:18 amSioux Falls Joe Foss Field

3h 37m

1 stop

STL8:55 amLambert-St Louis

Nov 24

STL5:34 pmLambert-St Louis

5h 26m

1 stop

FSD11:00 pmSioux Falls Joe Foss Field

$244

Find similar

Delta

Mar 3

RAP4:10 pmRapid City

6h 15m

1 stop

STL11:25 pmLambert-St Louis

Mar 7

STL6:10 amLambert-St Louis

5h 03m

1 stop

RAP10:13 amRapid City

$249

Find similar

Delta

Mar 3

RAP10:54 amRapid City

11h 44m

2 stops

STL11:38 pmLambert-St Louis

Mar 7

STL6:10 amLambert-St Louis

5h 03m

1 stop

RAP10:13 amRapid City

$254

Find similar

American Airlines flights from South Dakota to St. Louis

Our best American Airlines deals on South Dakota to St. Louis flight tickets

American Airlines

Nov 15

FSD6:30 amSioux Falls Joe Foss Field

6h 07m

1 stop

STL12:37 pmLambert-St Louis

Nov 19

STL5:17 amLambert-St Louis

7h 06m

1 stop

FSD12:23 pmSioux Falls Joe Foss Field

$279

Find similar

American Airlines

Nov 21

FSD7:16 pmSioux Falls Joe Foss Field

4h 46m

1 stop

STL12:02 amLambert-St Louis

Nov 25

STL1:20 pmLambert-St Louis

7h 49m

1 stop

FSD9:09 pmSioux Falls Joe Foss Field

$299

Find similar

American Airlines

Dec 4

RAP5:15 amRapid City

6h 19m

1 stop

STL12:34 pmLambert-St Louis

Dec 7

STL7:00 amLambert-St Louis

7h 12m

1 stop

RAP1:12 pmRapid City

$321

Find similar

Fly from

Fly to

Route

Depart

Return

Price

Rapid CitySt. Louis

RAP - STL

RAPSTL

Rapid City

Thu 11/20

10:10 pm-11:16 am

1 stop12h 06m

Lambert-St Louis

Mon 11/24

9:54 pm-9:43 am

1 stop12h 49m

$237

Sioux FallsSt. Louis

FSD - STL

FSDSTL

Sioux Falls Joe Foss Field

Thu 11/20

5:18 am-8:55 am

1 stop3h 37m

Lambert-St Louis

Mon 11/24

5:34 pm-11:00 pm

1 stop5h 26m

$244

Rapid CitySt. Louis

RAP - STL

RAPSTL

Rapid City

Tue 3/3

4:10 pm-11:25 pm

1 stop6h 15m

Lambert-St Louis

Sat 3/7

6:10 am-10:13 am

1 stop5h 03m

$249

Rapid CitySt. Louis

RAP - STL

RAPSTL

Rapid City

Tue 3/3

10:54 am-11:38 pm

2 stops11h 44m

Lambert-St Louis

Sat 3/7

6:10 am-10:13 am

1 stop5h 03m

$254

Rapid CitySt. Louis

RAP - STL

RAPSTL

Rapid City

Tue 12/9

11:02 am-9:57 pm

2 stops9h 55m

Lambert-St Louis

Tue 12/16

7:05 am-3:45 pm

2 stops9h 40m

$259

Sioux FallsSt. Louis

FSD - STL

FSDSTL

Sioux Falls Joe Foss Field

Fri 11/21

7:16 pm-12:02 am

1 stop4h 46m

Lambert-St Louis

Tue 11/25

1:20 pm-9:09 pm

1 stop7h 49m

$299

Rapid CitySt. Louis

RAP - STL

RAPSTL

Rapid City

Thu 12/4

5:15 am-12:34 pm

1 stop6h 19m

Lambert-St Louis

Sun 12/7

7:00 am-1:12 pm

1 stop7h 12m

$321

Sioux FallsSt. Louis

FSD - STL

FSDSTL

Sioux Falls Joe Foss Field

Wed 12/3

8:00 am-2:25 pm

1 stop6h 25m

Lambert-St Louis

Fri 12/5

5:27 pm-2:40 pm

1 stop21h 13m

$344

Rapid CitySt. Louis

RAP - STL

RAPSTL

Rapid City

Thu 11/20

5:15 am-2:24 pm

2 stops8h 09m

Lambert-St Louis

Mon 11/24

10:00 am-6:43 pm

2 stops9h 43m

$350

Sioux FallsSt. Louis

FSD - STL

FSDSTL

Sioux Falls Joe Foss Field

Fri 11/21

8:26 pm-10:02 am

1 stop13h 36m

Lambert-St Louis

Tue 11/25

3:14 pm-7:31 pm

2 stops28h 17m

$359

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Showing 1-10 of 20 resultsSorted by cheapest first

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

Prices

Airlines

Other information

What is the cheapest month to fly to St. Louis?

In general, August 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 $288. The month of April is another great option to travel to St. Louis, with average flight prices from South Dakota averaging around $289.

What is the cheapest day to depart on your flight to St. Louis?

The cheapest day to depart on your flight to St. Louis is on a Thursday when prices can be found for as low as $253. This is often the case because there is less demand to fly during this day of the week. If your travel schedule is flexible, try to avoid departing on a Monday because tickets tend to average around $440. These prices are subject to change though, so be sure to set up a Price Alert for flights to St. Louis.

What is the cheapest time of day to depart on your flight to St. Louis?

Flying to St. Louis from South Dakota in the evening is the least expensive time of day to depart. momondo users have found prices as low as $228 when looking at flights departing in the evening. In the morning is when there is more demand to fly to St. Louis, so prices are often more expensive at around $397 per ticket.

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

You could potentially save up to 78% 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

Direct flights	None

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?
The number of operators available for flights from South Dakota to Lambert-St Louis Airport is 3 as of November 2025.
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
Delta	PriceFrom $228	Free Cancellation	Rating 7.9 8,001 reviews	Search Delta flights
United Airlines	PriceFrom $241	Free Cancellation	Rating 7.4 9,007 reviews	Search United Airlines flights
American Airlines	PriceFrom $258	Free Cancellation	Rating 7.2 11,040 reviews	Search American Airlines flights

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Maryland Heights

O'Fallon

Wentzville

Fenton

Collinsville

St. Peters

Alton

Farmington

Festus

Glencoe

Edwardsville

Clayton

Eureka

Litchfield

Shrewsbury

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.

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Cheap flights from South Dakota to St. Louis 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 South Dakota to St. Louis departing on 12/10. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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Delta flights from South Dakota to St. Louis

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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?

What is the cheapest day to depart on your flight to St. Louis?

What is the cheapest time of day to depart on your flight to St. Louis?

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

You could potentially save up to 78% on your flight if you consider stops on a South Dakota to St. Louis flight.

What is the cheapest airline that flies from South Dakota to Lambert-St Louis?

Delta and United Airlines are the most popular carriers operating from South Dakota to Lambert-St Louis

What airlines fly to St. Louis?

How long does it take to fly to St. Louis?

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

Direct flights

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

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?

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

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

Traveling to a place near St. Louis?

Why use momondo?

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

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

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

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

An easier way to manage your St. Louis trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to the United States

Airports servicing Missouri