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Cheap flights from Sioux Falls to St. Louis from $249

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Sioux Falls to St. Louis departing on 2/19. 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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0 bags

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Find the cheapest flights from Sioux Falls to St. Louis

Cheap round-trip flights

Enter your travel dates to find the best prices.
American Airlines Logo
7:42 pm - 11:48 pm
FSD
-
STL
4h 06m
1 stop
American Airlines Logo
8:00 am - 1:33 pm
STL
-
FSD
5h 33m
1 stop
$249American Airlines
Thu, Feb 19 - Sat, Feb 21
American Airlines Logo
5:38 pm - 10:59 pm
FSD
-
STL
5h 21m
1 stop
American Airlines Logo
7:00 am - 12:41 pm
STL
-
FSD
5h 41m
1 stop
$259American Airlines
Wed, Feb 11 - Sun, Feb 15
American Airlines Logo
7:42 pm - 11:48 pm
FSD
-
STL
4h 06m
1 stop
American Airlines Logo
8:00 am - 1:33 pm
STL
-
FSD
5h 33m
1 stop
$274American Airlines
Thu, Feb 19 - Sat, Feb 21
United Airlines Logo
6:45 pm - 10:59 pm
FSD
-
STL
4h 14m
1 stop
United Airlines Logo
6:25 am - 10:46 am
STL
-
FSD
4h 21m
1 stop
$363United Airlines
Mon, Feb 23 - Tue, Feb 24
United Airlines Logo
9:00 am - 4:58 pm
FSD
-
STL
7h 58m
1 stop
United Airlines Logo
7:41 am - 8:39 pm
STL
-
FSD
12h 58m
2 stops
$464United Airlines
Thu, Feb 19 - Sat, Feb 21
United Airlines Logo
6:45 pm - 10:59 pm
FSD
-
STL
4h 14m
1 stop
United Airlines Logo
8:17 am - 8:39 pm
STL
-
FSD
12h 22m
2 stops
$494United Airlines
Thu, Feb 19 - Sat, Feb 21
United Airlines Logo
6:00 am - 2:30 pm
FSD
-
STL
8h 30m
2 stops
United Airlines Logo
6:25 am - 10:46 am
STL
-
FSD
4h 21m
1 stop
$622United Airlines
Wed, Feb 11 - Sun, Feb 15
United Airlines Logo
1:40 pm - 10:14 pm
FSD
-
STL
8h 34m
2 stops
United Airlines Logo
11:25 am - 5:21 pm
STL
-
FSD
5h 56m
1 stop
$700United Airlines
Mon, Feb 23 - Tue, Feb 24

American Airlines flights from Sioux Falls to St. Louis

Our best American Airlines deals on Sioux Falls to St. Louis flight tickets
American Airlines
Feb 19
FSD7:42 pmSioux Falls Joe Foss Field
4h 06m
1 stop
STL11:48 pmLambert-St Louis
Feb 21
STL8:00 amLambert-St Louis
5h 33m
1 stop
FSD1:33 pmSioux Falls Joe Foss Field
$249
American Airlines
Feb 11
FSD5:38 pmSioux Falls Joe Foss Field
5h 21m
1 stop
STL10:59 pmLambert-St Louis
Feb 15
STL7:00 amLambert-St Louis
5h 41m
1 stop
FSD12:41 pmSioux Falls Joe Foss Field
$259
American Airlines
Feb 19
FSD7:42 pmSioux Falls Joe Foss Field
4h 06m
1 stop
STL11:48 pmLambert-St Louis
Feb 21
STL8:00 amLambert-St Louis
5h 33m
1 stop
FSD1:33 pmSioux Falls Joe Foss Field
$274

United Airlines flights from Sioux Falls to St. Louis

Our best United Airlines deals on Sioux Falls to St. Louis flight tickets
United Airlines
Feb 14
FSD3:15 pmSioux Falls Joe Foss Field
5h 50m
1 stop
STL9:05 pmLambert-St Louis
Feb 18
STL2:45 pmLambert-St Louis
5h 54m
1 stop
FSD8:39 pmSioux Falls Joe Foss Field
$314
United Airlines
Feb 23
FSD6:45 pmSioux Falls Joe Foss Field
4h 14m
1 stop
STL10:59 pmLambert-St Louis
Feb 24
STL6:25 amLambert-St Louis
4h 21m
1 stop
FSD10:46 amSioux Falls Joe Foss Field
$363
United Airlines
Feb 14
FSD3:15 pmSioux Falls Joe Foss Field
5h 50m
1 stop
STL9:05 pmLambert-St Louis
Feb 18
STL8:17 amLambert-St Louis
12h 22m
2 stops
FSD8:39 pmSioux Falls Joe Foss Field
$432

momondo Fare Finder

 
Customize your flight search to find flights from Sioux Falls 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 January 28, 2026.
Use the filters below to find and compare flights from Sioux Falls to St. Louis that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Sioux FallsSt. Louis

FSD - STL

FSDSTL

Sioux Falls Joe Foss Field

Thu 2/19

7:42 pm-11:48 pm

1 stop4h 06m

Lambert-St Louis

Sat 2/21

8:00 am-1:33 pm

1 stop5h 33m

$249

Sioux FallsSt. Louis

FSD - STL

FSDSTL

Sioux Falls Joe Foss Field

Wed 2/11

5:38 pm-10:59 pm

1 stop5h 21m

Lambert-St Louis

Sun 2/15

7:00 am-12:41 pm

1 stop5h 41m

$259

Sioux FallsSt. Louis

FSD - STL

FSDSTL

Sioux Falls Joe Foss Field

Thu 2/19

7:42 pm-11:48 pm

1 stop4h 06m

Lambert-St Louis

Sat 2/21

8:00 am-1:33 pm

1 stop5h 33m

$274

Sioux FallsSt. Louis

FSD - STL

FSDSTL

Sioux Falls Joe Foss Field

Mon 2/23

6:45 pm-10:59 pm

1 stop4h 14m

Lambert-St Louis

Tue 2/24

6:25 am-10:46 am

1 stop4h 21m

$363

Sioux FallsSt. Louis

FSD - STL

FSDSTL

Sioux Falls Joe Foss Field

Thu 2/19

9:00 am-4:58 pm

1 stop7h 58m

Lambert-St Louis

Sat 2/21

7:41 am-8:39 pm

2 stops12h 58m

$464

Sioux FallsSt. Louis

FSD - STL

FSDSTL

Sioux Falls Joe Foss Field

Thu 2/19

6:45 pm-10:59 pm

1 stop4h 14m

Lambert-St Louis

Sat 2/21

8:17 am-8:39 pm

2 stops12h 22m

$494

Sioux FallsSt. Louis

FSD - STL

FSDSTL

Sioux Falls Joe Foss Field

Wed 2/11

6:00 am-2:30 pm

2 stops8h 30m

Lambert-St Louis

Sun 2/15

6:25 am-10:46 am

1 stop4h 21m

$622

Sioux FallsSt. Louis

FSD - STL

FSDSTL

Sioux Falls Joe Foss Field

Mon 2/23

1:40 pm-10:14 pm

2 stops8h 34m

Lambert-St Louis

Tue 2/24

11:25 am-5:21 pm

1 stop5h 56m

$700

Sioux FallsSt. Louis

FSD - STL

FSDSTL

Sioux Falls Joe Foss Field

Tue 2/3

3:37 pm-9:06 pm

2 stops53h 29m

$335

Sioux FallsSt. Louis

FSD - STL

FSDSTL

Sioux Falls Joe Foss Field

Tue 2/3

11:02 am-2:38 pm

1 stop3h 36m

$337

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 13 resultsSorted by cheapest first
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See travel insights to St. Louis from

How to get the cheapest flight ticket from Sioux Falls 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 typical price of a round-trip flight between Sioux Falls and St. Louis?

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

In general, August is the cheapest month to fly from Sioux Falls 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 Sioux Falls averaging around $289.

When to book flights from Sioux Falls to St. Louis

Are you open to changing your travel dates? Check out the ideal times to fly from Sioux Falls to St. Louis according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Sioux Falls to St. Louis (FSD to STL) flight deals and tips

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

Fastest flight time

4h 34m

Direct flights

None
The fastest flight from Sioux Falls to St. Louis takes 4h 34m
There are no direct flights from Sioux Falls to St. Louis. There are no popular flight routes from Sioux Falls to St. Louis.
Search flight deals

  • How far is Sioux Falls Joe Foss Field to Lambert-St Louis by plane?

    The distance between Sioux Falls Joe Foss Field and Lambert-St Louis is about 480.2 mi. 4h 34m is a normal flight duration for this route.

  • When did momondo last update prices for flights from Sioux Falls Joe Foss Field Airport to Lambert-St Louis Airport?

    Prices for flights from Sioux Falls Joe Foss Field Airport to Lambert-St Louis Airport were last updated today.

  • How many operators does momondo search for flights from Sioux Falls Joe Foss Field Airport to Lambert-St Louis Airport?

  • How old do you have to be to fly from Sioux Falls Joe Foss Field Airport to Lambert-St Louis Airport?

    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 Sioux Falls Joe Foss Field Airport to Lambert-St Louis Airport.

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

    The necessary travel and health documents for your Lambert-St Louis Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

  • What is the most popular airline from Sioux Falls to St. Louis?

Best airlines flying from Sioux Falls to St. Louis

Compare and see reviews for airlines that fly from Sioux Falls to St. Louis with momondo
Airline
Rating
Free Cancellation
Price
DeltaPriceFrom $228Free CancellationRating
7.9
8,124 reviews
Search Delta flights
American AirlinesPriceFrom $243Free CancellationRating
7.2
11,201 reviews
Search American Airlines flights
United AirlinesPriceFrom $268Free CancellationRating
7.4
9,212 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
Maryland Heights
Florissant
O'Fallon
Collinsville
Fenton
St. Peters
Wentzville
Alton
Farmington
Clayton
Edwardsville
Eureka
Festus
Glencoe
Litchfield
Shrewsbury

Why use momondo?

Why should I use momondo to find a flight deal from Sioux Falls to St. Louis?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Sioux Falls to St. Louis. momondo saves you time and could save you money on your trip.

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

Flights from Sioux Falls to St. Louis 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 Sioux Falls to St. Louis?

momondo helps you find the best flight between Sioux Falls and St. Louis by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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

If you are not ready to book a flight from Sioux Falls to St. Louis now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to St. Louis and let you know when they change.

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