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Cheap flights from Sioux Falls to St. Louis from $264

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 2/26. 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 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
6:36 pm - 11:03 pm
STL
-
FSD
4h 27m
1 stop
$264American Airlines
Thu, Feb 26 - Mon, Mar 2
Delta Logo
5:00 am - 10:43 am
FSD
-
STL
5h 43m
1 stop
Delta Logo
6:10 am - 10:08 am
STL
-
FSD
3h 58m
1 stop
$269Delta
Wed, Feb 25 - Sun, Mar 1
United Airlines Logo
3:15 pm - 9:05 pm
FSD
-
STL
5h 50m
1 stop
United Airlines Logo
6:25 am - 10:46 am
STL
-
FSD
4h 21m
1 stop
$274United Airlines
Tue, Feb 24 - Sat, Feb 28
Frontier Logo
2:16 pm - 1:09 pm
FSD
-
STL
22h 53m
1 stop
Frontier Logo
5:18 pm - 1:21 pm
STL
-
FSD
20h 03m
1 stop
$293Frontier
Sun, Mar 1 - Wed, Mar 4
American Airlines Logo
7:42 pm - 11:48 pm
FSD
-
STL
4h 06m
1 stop
American Airlines Logo
6:36 pm - 11:03 pm
STL
-
FSD
4h 27m
1 stop
$294American Airlines
Thu, Feb 26 - Mon, Mar 2
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
$299American Airlines
Thu, Feb 19 - Sat, Feb 21
Frontier Logo
2:16 pm - 1:09 pm
FSD
-
STL
22h 53m
1 stop
Frontier Logo
8:17 pm - 1:21 pm
STL
-
FSD
17h 04m
2 stops
$304Frontier
Sun, Mar 1 - Wed, Mar 4
United Airlines Logo
6:45 pm - 10:59 pm
FSD
-
STL
4h 14m
1 stop
United Airlines Logo
6:00 pm - 11:49 pm
STL
-
FSD
5h 49m
1 stop
$317United Airlines
Fri, Feb 27 - Sun, Mar 1
United Airlines Logo
9:00 am - 4:58 pm
FSD
-
STL
7h 58m
1 stop
United Airlines Logo
6:05 pm - 11:44 pm
STL
-
FSD
5h 39m
1 stop
$348United Airlines
Wed, Mar 4 - Fri, Mar 6
United Airlines Logo
9:00 am - 4:58 pm
FSD
-
STL
7h 58m
1 stop
United Airlines Logo
6:25 am - 10:46 am
STL
-
FSD
4h 21m
1 stop
$359United Airlines
Wed, Feb 18 - Sat, Feb 21

Delta flights from Sioux Falls to St. Louis

Our best Delta deals on Sioux Falls to St. Louis flight tickets
Delta
Feb 25
FSD5:00 amSioux Falls Joe Foss Field
5h 43m
1 stop
STL10:43 amLambert-St Louis
Mar 1
STL6:10 amLambert-St Louis
3h 58m
1 stop
FSD10:08 amSioux Falls Joe Foss Field
$269
Delta
Mar 4
FSD5:00 amSioux Falls Joe Foss Field
5h 43m
1 stop
STL10:43 amLambert-St Louis
Mar 6
STL5:29 pmLambert-St Louis
5h 26m
1 stop
FSD10:55 pmSioux Falls Joe Foss Field
$368

Frontier flights from Sioux Falls to St. Louis

Our best Frontier deals on Sioux Falls to St. Louis flight tickets
Frontier
Mar 1
FSD2:16 pmSioux Falls Joe Foss Field
22h 53m
1 stop
STL1:09 pmLambert-St Louis
Mar 4
STL5:18 pmLambert-St Louis
20h 03m
1 stop
FSD1:21 pmSioux Falls Joe Foss Field
$293
Frontier
Mar 1
FSD2:16 pmSioux Falls Joe Foss Field
22h 53m
1 stop
STL1:09 pmLambert-St Louis
Mar 4
STL8:17 pmLambert-St Louis
17h 04m
2 stops
FSD1:21 pmSioux Falls Joe Foss Field
$304
Frontier
Feb 27
FSD1:59 pmSioux Falls Joe Foss Field
23h 57m
1 stop
STL1:56 pmLambert-St Louis
Mar 1
STL10:11 pmLambert-St Louis
15h 46m
2 stops
FSD1:57 pmSioux Falls Joe Foss Field
$425

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 February 12, 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 2/26

7:42 pm-11:48 pm

1 stop4h 06m

Lambert-St Louis

Mon 3/2

6:36 pm-11:03 pm

1 stop4h 27m

$264

Sioux FallsSt. Louis

FSD - STL

FSDSTL

Sioux Falls Joe Foss Field

Wed 2/25

5:00 am-10:43 am

1 stop5h 43m

Lambert-St Louis

Sun 3/1

6:10 am-10:08 am

1 stop3h 58m

$269

Sioux FallsSt. Louis

FSD - STL

FSDSTL

Sioux Falls Joe Foss Field

Tue 2/24

3:15 pm-9:05 pm

1 stop5h 50m

Lambert-St Louis

Sat 2/28

6:25 am-10:46 am

1 stop4h 21m

$274

Sioux FallsSt. Louis

FSD - STL

FSDSTL

Sioux Falls Joe Foss Field

Sun 3/1

2:16 pm-1:09 pm

1 stop22h 53m

Lambert-St Louis

Wed 3/4

5:18 pm-1:21 pm

1 stop20h 03m

$293

Sioux FallsSt. Louis

FSD - STL

FSDSTL

Sioux Falls Joe Foss Field

Thu 2/26

7:42 pm-11:48 pm

1 stop4h 06m

Lambert-St Louis

Mon 3/2

6:36 pm-11:03 pm

1 stop4h 27m

$294

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

$299

Sioux FallsSt. Louis

FSD - STL

FSDSTL

Sioux Falls Joe Foss Field

Sun 3/1

2:16 pm-1:09 pm

1 stop22h 53m

Lambert-St Louis

Wed 3/4

8:17 pm-1:21 pm

2 stops17h 04m

$304

Sioux FallsSt. Louis

FSD - STL

FSDSTL

Sioux Falls Joe Foss Field

Fri 2/27

6:45 pm-10:59 pm

1 stop4h 14m

Lambert-St Louis

Sun 3/1

6:00 pm-11:49 pm

1 stop5h 49m

$317

Sioux FallsSt. Louis

FSD - STL

FSDSTL

Sioux Falls Joe Foss Field

Wed 3/4

9:00 am-4:58 pm

1 stop7h 58m

Lambert-St Louis

Fri 3/6

6:05 pm-11:44 pm

1 stop5h 39m

$348

Sioux FallsSt. Louis

FSD - STL

FSDSTL

Sioux Falls Joe Foss Field

Wed 2/18

9:00 am-4:58 pm

1 stop7h 58m

Lambert-St Louis

Sat 2/21

6:25 am-10:46 am

1 stop4h 21m

$359

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 12 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, September 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 $278. The month of August is another great option to travel to St. Louis, with average flight prices from Sioux Falls averaging around $288.

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

3h 15m

Direct flights

None
The fastest flight from Sioux Falls to St. Louis takes 3h 15m
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. 3h 15m 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
8,179 reviews
Search Delta flights
American AirlinesPriceFrom $243Free CancellationRating
7.2
11,267 reviews
Search American Airlines flights
United AirlinesPriceFrom $268Free CancellationRating
7.4
9,276 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
St. Peters
Fenton
Wentzville
Alton
Farmington
Clayton
Edwardsville
Eureka
Festus
Litchfield
Glencoe
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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