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 41% 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?

United Airlines and American 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 Rapid City and flying into St. Louis (one of the most popular routes), then the duration is 4h 38m on average. Another popular route from South Dakota to St. Louis is flying from Sioux Falls to St. Louis, which will take roughly 5h 10m. 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 December 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.

$153 Cheap Flights from South Dakota to St. Louis in 2025/26

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Find the cheapest flights from South Dakota to St. Louis

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6:25 am - 10:41 am

FSD

STL

4h 16m1 stop

5:25 pm - 11:06 pm

STL

FSD

5h 41m1 stop

$239Delta

Sat, Jan 17 - Mon, Jan 19

7:29 pm - 11:44 pm

FSD

STL

4h 15m1 stop

6:00 am - 11:51 am

STL

FSD

5h 51m1 stop

$244American Airlines

Thu, Jan 1 - Wed, Jan 7

4:10 pm - 11:25 pm

RAP

STL

6h 15m1 stop

11:23 am - 3:25 pm

STL

RAP

5h 02m1 stop

$269Delta

Thu, Jan 15 - Sat, Jan 17

6:00 am - 1:16 pm

FSD

STL

7h 16m1 stop

6:00 pm - 11:44 pm

STL

FSD

5h 44m1 stop

$274United Airlines

Sun, Jan 18 - Sun, Jan 18

9:00 am - 4:55 pm

FSD

STL

7h 55m1 stop

4:49 pm - 9:50 pm

STL

FSD

5h 01m1 stop

$309United Airlines

Wed, Jan 21 - Sat, Jan 24

5:00 am - 10:43 am

FSD

STL

5h 43m1 stop

6:10 am - 10:22 am

STL

FSD

4h 12m1 stop

$314Delta

Sun, Jan 18 - Sun, Jan 25

12:35 pm - 8:58 pm

RAP

STL

7h 23m1 stop

4:15 pm - 8:32 pm

STL

RAP

5h 17m1 stop

$339United Airlines

Tue, Feb 3 - Sat, Feb 7

2:40 pm - 8:58 pm

RAP

STL

5h 18m1 stop

9:57 am - 5:12 pm

STL

RAP

8h 15m2 stops

$344United Airlines

Tue, Feb 3 - Sat, Feb 7

7:30 am - 2:30 pm

FSD

STL

7h 00m1 stop

4:15 pm - 11:44 pm

STL

FSD

7h 29m1 stop

$349United Airlines

Tue, Jan 6 - Sat, Jan 10

6:00 am - 10:20 am

FSD

STL

4h 20m1 stop

6:52 am - 5:45 pm

STL

FSD

10h 53m2 stops

$424American Airlines

Sat, Jan 17 - Mon, Jan 19

Delta flights from South Dakota to St. Louis

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

Delta

Jan 15

RAP4:10 pmRapid City

6h 15m

1 stop

STL11:25 pmLambert-St Louis

Jan 17

STL11:23 amLambert-St Louis

5h 02m

1 stop

RAP3:25 pmRapid City

$269

Find similar

Delta

Jan 18

FSD5:00 amSioux Falls Joe Foss Field

5h 43m

1 stop

STL10:43 amLambert-St Louis

Jan 25

STL6:10 amLambert-St Louis

4h 12m

1 stop

FSD10:22 amSioux Falls Joe Foss Field

$314

Find similar

Delta

Apr 18

RAP4:00 pmRapid City

6h 12m

1 stop

STL11:12 pmLambert-St Louis

Apr 22

STL6:10 amLambert-St Louis

4h 57m

1 stop

RAP10:07 amRapid City

$498

Find similar

United Airlines flights from South Dakota to St. Louis

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

United Airlines

Jan 21

FSD9:00 amSioux Falls Joe Foss Field

7h 55m

1 stop

STL4:55 pmLambert-St Louis

Jan 24

STL4:49 pmLambert-St Louis

5h 01m

1 stop

FSD9:50 pmSioux Falls Joe Foss Field

$309

Find similar

United Airlines

Jan 18

FSD6:00 amSioux Falls Joe Foss Field

7h 16m

1 stop

STL1:16 pmLambert-St Louis

Jan 25

STL6:00 pmLambert-St Louis

5h 44m

1 stop

FSD11:44 pmSioux Falls Joe Foss Field

$319

Find similar

United Airlines

Feb 3

RAP12:35 pmRapid City

7h 23m

1 stop

STL8:58 pmLambert-St Louis

Feb 7

STL4:15 pmLambert-St Louis

5h 17m

1 stop

RAP8:32 pmRapid City

$339

Find similar

Fly from

Fly to

Route

Depart

Return

Price

Sioux FallsSt. Louis

FSD - STL

FSDSTL

Sioux Falls Joe Foss Field

Sat 1/17

6:25 am-10:41 am

1 stop4h 16m

Lambert-St Louis

Mon 1/19

5:25 pm-11:06 pm

1 stop5h 41m

$239

Sioux FallsSt. Louis

FSD - STL

FSDSTL

Sioux Falls Joe Foss Field

Thu 1/1

7:29 pm-11:44 pm

1 stop4h 15m

Lambert-St Louis

Wed 1/7

6:00 am-11:51 am

1 stop5h 51m

$244

Rapid CitySt. Louis

RAP - STL

RAPSTL

Rapid City

Thu 1/15

4:10 pm-11:25 pm

1 stop6h 15m

Lambert-St Louis

Sat 1/17

11:23 am-3:25 pm

1 stop5h 02m

$269

Sioux FallsSt. Louis

FSD - STL

FSDSTL

Sioux Falls Joe Foss Field

Sun 1/18

6:00 am-1:16 pm

1 stop7h 16m

Lambert-St Louis

Sun 1/18

6:00 pm-11:44 pm

1 stop5h 44m

$274

Sioux FallsSt. Louis

FSD - STL

FSDSTL

Sioux Falls Joe Foss Field

Wed 1/21

9:00 am-4:55 pm

1 stop7h 55m

Lambert-St Louis

Sat 1/24

4:49 pm-9:50 pm

1 stop5h 01m

$309

Sioux FallsSt. Louis

FSD - STL

FSDSTL

Sioux Falls Joe Foss Field

Sun 1/18

5:00 am-10:43 am

1 stop5h 43m

Lambert-St Louis

Sun 1/25

6:10 am-10:22 am

1 stop4h 12m

$314

Rapid CitySt. Louis

RAP - STL

RAPSTL

Rapid City

Tue 2/3

12:35 pm-8:58 pm

1 stop7h 23m

Lambert-St Louis

Sat 2/7

4:15 pm-8:32 pm

1 stop5h 17m

$339

Rapid CitySt. Louis

RAP - STL

RAPSTL

Rapid City

Tue 2/3

2:40 pm-8:58 pm

1 stop5h 18m

Lambert-St Louis

Sat 2/7

9:57 am-5:12 pm

2 stops8h 15m

$344

Sioux FallsSt. Louis

FSD - STL

FSDSTL

Sioux Falls Joe Foss Field

Tue 1/6

7:30 am-2:30 pm

1 stop7h 00m

Lambert-St Louis

Sat 1/10

4:15 pm-11:44 pm

1 stop7h 29m

$349

Sioux FallsSt. Louis

FSD - STL

FSDSTL

Sioux Falls Joe Foss Field

Sat 1/17

6:00 am-10:20 am

1 stop4h 20m

Lambert-St Louis

Mon 1/19

6:52 am-5:45 pm

2 stops10h 53m

$424

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 15 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, January 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 $222. The month of August is another great option to travel to St. Louis, with average flight prices from South Dakota averaging around $288.

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 81% 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	4h 38m
Direct flights	None

The fastest flight from South Dakota to St. Louis takes 4h 38m

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 December 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 $208	Free Cancellation	Rating 7.9 8,013 reviews	Search Delta flights
American Airlines	PriceFrom $243	Free Cancellation	Rating 7.2 11,054 reviews	Search American Airlines flights
United Airlines	PriceFrom $264	Free Cancellation	Rating 7.4 9,110 reviews	Search United Airlines flights

St. Charles

Chesterfield

Hermann

Fairview Heights

Maryland Heights

O'Fallon

Florissant

Fenton

St. Peters

Wentzville

Collinsville

Alton

Farmington

Clayton

Festus

Glencoe

Eureka

Edwardsville

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.

An easier way to manage your St. Louis trip

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Cheap flights from South Dakota to St. Louis from $153

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 1/18. 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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Big names and deals

Filter for what you want

Filter for what you want

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Find the cheapest flights from South Dakota to St. Louis

Cheap round-trip flights

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Delta flights from South Dakota to St. Louis

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

United Airlines flights from South Dakota to St. Louis

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

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See travel insights to St. Louis from

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

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 81% 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?

United Airlines and American 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

Fastest flight time

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

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