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Cheap flights from Sioux Falls to St. Louis from $113

This is the cheapest one-way 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 10/5. 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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Find the cheapest flights from Sioux Falls to St. Louis

Cheap round-trip flights

Delta Logo
5:15 am - 8:54 amFSD-STL
3h 39m1 stop
Delta Logo
5:30 pm - 10:58 pmSTL-FSD
5h 28m1 stop
$229Delta
Find Deal
Wed, Mar 4 - Sat, Mar 7
Delta Logo
12:56 pm - 4:45 pmFSD-STL
3h 49m1 stop
Delta Logo
6:00 am - 10:07 amSTL-FSD
4h 07m1 stop
$239Delta
Find Deal
Tue, Sep 30 - Sat, Oct 4
American Airlines Logo
4:00 pm - 8:23 pmFSD-STL
4h 23m1 stop
American Airlines Logo
7:58 pm - 1:13 pmSTL-FSD
17h 15m1 stop
$289American Airlines
Find Deal
Tue, Nov 11 - Fri, Nov 14
United Airlines Logo
8:00 am - 8:46 pmFSD-STL
12h 46m2 stops
United Airlines Logo
5:15 am - 12:51 pmSTL-FSD
7h 36m1 stop
$319United Airlines
Find Deal
Tue, Sep 30 - Sat, Oct 4
American Airlines Logo
7:00 am - 6:43 pmFSD-STL
11h 43m2 stops
American Airlines Logo
7:36 pm - 11:59 pmSTL-FSD
4h 23m1 stop
$324American Airlines
Find Deal
Wed, Dec 3 - Sat, Dec 6
Frontier Logo
7:33 pm - 10:02 amFSD-STL
14h 29m1 stop
Frontier Logo
5:11 pm - 6:38 pmSTL-FSD
49h 27m2 stops
$336Frontier
Find Deal
Thu, Dec 4 - Tue, Dec 9
Frontier Logo
3:19 pm - 9:07 amFSD-STL
17h 48m1 stop
Frontier Logo
7:52 pm - 6:33 pmSTL-FSD
22h 41m1 stop
$347Frontier
Find Deal
Thu, Oct 23 - Sun, Oct 26
Multiple Airlines Logo
2:54 pm - 9:06 amFSD-STL
18h 12m1 stop
Multiple Airlines Logo
7:55 pm - 10:51 amSTL-FSD
14h 56m2 stops
$372Multiple Airlines
Find Deal
Sun, Sep 28 - Wed, Oct 1
Multiple Airlines Logo
2:54 pm - 9:06 amFSD-STL
18h 12m1 stop
Multiple Airlines Logo
7:55 pm - 10:51 amSTL-FSD
14h 56m2 stops
$388Multiple Airlines
Find Deal
Sun, Sep 28 - Wed, Oct 1
United Airlines Logo
5:14 pm - 9:54 pmFSD-STL
4h 40m1 stop
United Airlines Logo
5:24 pm - 4:18 pmSTL-FSD
22h 54m3 stops
$509United Airlines
Find Deal
Tue, Nov 11 - Fri, Nov 14

Delta flights from Sioux Falls to St. Louis

Our best Delta deals on Sioux Falls to St. Louis flight tickets
Delta
Mar 4
FSD5:15 amSioux Falls Joe Foss Field
3h 39m
1 stop
STL8:54 amLambert-St Louis
Mar 7
STL5:30 pmLambert-St Louis
5h 28m
1 stop
FSD10:58 pmSioux Falls Joe Foss Field
$229
Find similar
Delta
Sep 30
FSD12:56 pmSioux Falls Joe Foss Field
3h 49m
1 stop
STL4:45 pmLambert-St Louis
Oct 4
STL6:00 amLambert-St Louis
4h 07m
1 stop
FSD10:07 amSioux Falls Joe Foss Field
$239
Find similar
Delta
Feb 27
FSD5:15 amSioux Falls Joe Foss Field
3h 39m
1 stop
STL8:54 amLambert-St Louis
Mar 2
STL5:30 pmLambert-St Louis
5h 28m
1 stop
FSD10:58 pmSioux Falls Joe Foss Field
$269
Find similar

American Airlines flights from Sioux Falls to St. Louis

Our best American Airlines deals on Sioux Falls to St. Louis flight tickets
American Airlines
Nov 11
FSD4:00 pmSioux Falls Joe Foss Field
4h 23m
1 stop
STL8:23 pmLambert-St Louis
Nov 14
STL7:58 pmLambert-St Louis
17h 15m
1 stop
FSD1:13 pmSioux Falls Joe Foss Field
$289
Find similar
American Airlines
Dec 3
FSD7:00 amSioux Falls Joe Foss Field
11h 43m
2 stops
STL6:43 pmLambert-St Louis
Dec 6
STL7:36 pmLambert-St Louis
4h 23m
1 stop
FSD11:59 pmSioux Falls Joe Foss Field
$324
Find similar
American Airlines
Dec 3
FSD7:00 amSioux Falls Joe Foss Field
5h 44m
1 stop
STL12:44 pmLambert-St Louis
Dec 7
STL7:00 amLambert-St Louis
5h 22m
1 stop
FSD12:22 pmSioux Falls Joe Foss Field
$334
Find similar

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 September 17, 2025.
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

Wed 3/4

5:15 am-8:54 am

1 stop3h 39m

Lambert-St Louis

Sat 3/7

5:30 pm-10:58 pm

1 stop5h 28m

$229

Sioux FallsSt. Louis

FSD - STL

FSDSTL

Sioux Falls Joe Foss Field

Tue 9/30

12:56 pm-4:45 pm

1 stop3h 49m

Lambert-St Louis

Sat 10/4

6:00 am-10:07 am

1 stop4h 07m

$239

Sioux FallsSt. Louis

FSD - STL

FSDSTL

Sioux Falls Joe Foss Field

Tue 11/11

4:00 pm-8:23 pm

1 stop4h 23m

Lambert-St Louis

Fri 11/14

7:58 pm-1:13 pm

1 stop17h 15m

$289

Sioux FallsSt. Louis

FSD - STL

FSDSTL

Sioux Falls Joe Foss Field

Tue 9/30

8:00 am-8:46 pm

2 stops12h 46m

Lambert-St Louis

Sat 10/4

5:15 am-12:51 pm

1 stop7h 36m

$319

Sioux FallsSt. Louis

FSD - STL

FSDSTL

Sioux Falls Joe Foss Field

Wed 12/3

7:00 am-6:43 pm

2 stops11h 43m

Lambert-St Louis

Sat 12/6

7:36 pm-11:59 pm

1 stop4h 23m

$324

Sioux FallsSt. Louis

FSD - STL

FSDSTL

Sioux Falls Joe Foss Field

Thu 12/4

7:33 pm-10:02 am

1 stop14h 29m

Lambert-St Louis

Tue 12/9

5:11 pm-6:38 pm

2 stops49h 27m

$336

Sioux FallsSt. Louis

FSD - STL

FSDSTL

Sioux Falls Joe Foss Field

Thu 10/23

3:19 pm-9:07 am

1 stop17h 48m

Lambert-St Louis

Sun 10/26

7:52 pm-6:33 pm

1 stop22h 41m

$347

Sioux FallsSt. Louis

FSD - STL

FSDSTL

Sioux Falls Joe Foss Field

Sun 9/28

2:54 pm-9:06 am

1 stop18h 12m

Lambert-St Louis

Wed 10/1

7:55 pm-10:51 am

2 stops14h 56m

$372

Sioux FallsSt. Louis

FSD - STL

FSDSTL

Sioux Falls Joe Foss Field

Sun 9/28

2:54 pm-9:06 am

1 stop18h 12m

Lambert-St Louis

Wed 10/1

7:55 pm-10:51 am

2 stops14h 56m

$388

Sioux FallsSt. Louis

FSD - STL

FSDSTL

Sioux Falls Joe Foss Field

Tue 11/11

5:14 pm-9:54 pm

1 stop4h 40m

Lambert-St Louis

Fri 11/14

5:24 pm-4:18 pm

3 stops22h 54m

$509

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 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, April 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 $284. The month of August is another great option to travel to St. Louis, with average flight prices from Sioux Falls 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 Sioux Falls 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.

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

Direct flights

None
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 39m 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
7,961 reviews
Search Delta flights
United AirlinesPriceFrom $241Free CancellationRating
7.4
8,926 reviews
Search United Airlines flights
American AirlinesPriceFrom $253Free CancellationRating
7.2
10,000 reviews
Search American 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
Fenton
Collinsville
Wentzville
Alton
St. Peters
Farmington
Festus
Glencoe
Clayton
Edwardsville
Eureka
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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