Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from Sioux Falls to St. Louis from $94

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 4/10. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from Sioux Falls to St. Louis

Cheap round-trip flights

Enter your travel dates to find the best prices.
Frontier Logo
7:21 pm - 9:48 am
FSD
-
STL
14h 27m
1 stop
Frontier Logo
8:06 pm - 7:21 pm
STL
-
FSD
23h 15m
1 stop
$181Frontier
Fri, Apr 10 - Thu, Apr 16
Delta Logo
5:00 am - 9:01 am
FSD
-
STL
4h 01m
1 stop
Delta Logo
5:25 pm - 11:04 pm
STL
-
FSD
5h 39m
1 stop
$249Delta
Sun, Mar 29 - Sun, Apr 5
Frontier Logo
7:21 pm - 9:48 am
FSD
-
STL
14h 27m
1 stop
Frontier Logo
9:55 pm - 7:21 pm
STL
-
FSD
21h 26m
2 stops
$253Frontier
Fri, Apr 10 - Thu, Apr 16
United Airlines Logo
9:36 am - 4:31 pm
FSD
-
STL
6h 55m
1 stop
United Airlines Logo
6:00 am - 12:26 pm
STL
-
FSD
6h 26m
1 stop
$309United Airlines
Wed, Aug 12 - Sat, Aug 15
United Airlines Logo
7:43 am - 2:42 pm
FSD
-
STL
6h 59m
1 stop
United Airlines Logo
3:24 pm - 10:02 pm
STL
-
FSD
6h 38m
1 stop
$324United Airlines
Wed, Mar 25 - Fri, Mar 27
Multiple Airlines Logo
9:14 pm - 10:02 pm
FSD
-
STL
24h 48m
1 stop
Multiple Airlines Logo
9:50 am - 8:11 pm
STL
-
FSD
10h 21m
2 stops
$327Multiple Airlines
Wed, Mar 25 - Fri, Mar 27
United Airlines Logo
3:10 pm - 9:52 pm
FSD
-
STL
6h 42m
1 stop
United Airlines Logo
2:40 pm - 8:30 pm
STL
-
FSD
5h 50m
1 stop
$329United Airlines
Sat, Apr 11 - Wed, Apr 15
United Airlines Logo
6:53 pm - 11:11 pm
FSD
-
STL
4h 18m
1 stop
United Airlines Logo
6:55 pm - 11:44 pm
STL
-
FSD
4h 49m
1 stop
$344United Airlines
Wed, Apr 15 - Fri, Apr 17
Multiple Airlines Logo
11:01 am - 9:49 am
FSD
-
STL
22h 48m
2 stops
Multiple Airlines Logo
12:14 pm - 1:45 pm
STL
-
FSD
25h 31m
1 stop
$426Multiple Airlines
Tue, Mar 24 - Tue, Mar 31
American Airlines Logo
7:39 pm - 11:47 am
FSD
-
STL
16h 08m
1 stop
American Airlines Logo
7:05 am - 2:47 pm
STL
-
FSD
7h 42m
1 stop
$440American Airlines
Mon, May 11 - Thu, May 14

Delta flights from Sioux Falls to St. Louis

Our best Delta deals on Sioux Falls to St. Louis flight tickets
Delta
Mar 29
FSD5:00 amSioux Falls Joe Foss Field
4h 01m
1 stop
STL9:01 amLambert-St Louis
Apr 5
STL5:25 pmLambert-St Louis
5h 39m
1 stop
FSD11:04 pmSioux Falls Joe Foss Field
$249
Delta
Mar 13
FSD8:00 amSioux Falls Joe Foss Field
6h 24m
1 stop
STL2:24 pmLambert-St Louis
Mar 17
STL5:25 pmLambert-St Louis
5h 39m
1 stop
FSD11:04 pmSioux Falls Joe Foss Field
$279
Delta
Mar 18
FSD8:00 amSioux Falls Joe Foss Field
3h 48m
1 stop
STL11:48 amLambert-St Louis
Mar 22
STL6:29 amLambert-St Louis
3h 52m
1 stop
FSD10:21 amSioux Falls Joe Foss Field
$449

United Airlines flights from Sioux Falls to St. Louis

Our best United Airlines deals on Sioux Falls to St. Louis flight tickets
United Airlines
Aug 12
FSD9:36 amSioux Falls Joe Foss Field
6h 55m
1 stop
STL4:31 pmLambert-St Louis
Aug 15
STL6:00 amLambert-St Louis
6h 26m
1 stop
FSD12:26 pmSioux Falls Joe Foss Field
$309
United Airlines
Mar 7
FSD1:38 pmSioux Falls Joe Foss Field
7h 07m
1 stop
STL8:45 pmLambert-St Louis
Mar 9
STL5:55 pmLambert-St Louis
5h 49m
1 stop
FSD11:44 pmSioux Falls Joe Foss Field
$319
United Airlines
Mar 25
FSD7:43 amSioux Falls Joe Foss Field
6h 59m
1 stop
STL2:42 pmLambert-St Louis
Mar 27
STL3:24 pmLambert-St Louis
6h 38m
1 stop
FSD10:02 pmSioux Falls Joe Foss Field
$324

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 March 5, 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

Fri 4/10

7:21 pm-9:48 am

1 stop14h 27m

Lambert-St Louis

Thu 4/16

8:06 pm-7:21 pm

1 stop23h 15m

$181

Sioux FallsSt. Louis

FSD - STL

FSDSTL

Sioux Falls Joe Foss Field

Sun 3/29

5:00 am-9:01 am

1 stop4h 01m

Lambert-St Louis

Sun 4/5

5:25 pm-11:04 pm

1 stop5h 39m

$249

Sioux FallsSt. Louis

FSD - STL

FSDSTL

Sioux Falls Joe Foss Field

Fri 4/10

7:21 pm-9:48 am

1 stop14h 27m

Lambert-St Louis

Thu 4/16

9:55 pm-7:21 pm

2 stops21h 26m

$253

Sioux FallsSt. Louis

FSD - STL

FSDSTL

Sioux Falls Joe Foss Field

Wed 8/12

9:36 am-4:31 pm

1 stop6h 55m

Lambert-St Louis

Sat 8/15

6:00 am-12:26 pm

1 stop6h 26m

$309

Sioux FallsSt. Louis

FSD - STL

FSDSTL

Sioux Falls Joe Foss Field

Wed 3/25

7:43 am-2:42 pm

1 stop6h 59m

Lambert-St Louis

Fri 3/27

3:24 pm-10:02 pm

1 stop6h 38m

$324

Sioux FallsSt. Louis

FSD - STL

FSDSTL

Sioux Falls Joe Foss Field

Wed 3/25

9:14 pm-10:02 pm

1 stop24h 48m

Lambert-St Louis

Fri 3/27

9:50 am-8:11 pm

2 stops10h 21m

$327

Sioux FallsSt. Louis

FSD - STL

FSDSTL

Sioux Falls Joe Foss Field

Sat 4/11

3:10 pm-9:52 pm

1 stop6h 42m

Lambert-St Louis

Wed 4/15

2:40 pm-8:30 pm

1 stop5h 50m

$329

Sioux FallsSt. Louis

FSD - STL

FSDSTL

Sioux Falls Joe Foss Field

Wed 4/15

6:53 pm-11:11 pm

1 stop4h 18m

Lambert-St Louis

Fri 4/17

6:55 pm-11:44 pm

1 stop4h 49m

$344

Sioux FallsSt. Louis

FSD - STL

FSDSTL

Sioux Falls Joe Foss Field

Tue 3/24

11:01 am-9:49 am

2 stops22h 48m

Lambert-St Louis

Tue 3/31

12:14 pm-1:45 pm

1 stop25h 31m

$426

Sioux FallsSt. Louis

FSD - STL

FSDSTL

Sioux Falls Joe Foss Field

Mon 5/11

7:39 pm-11:47 am

1 stop16h 08m

Lambert-St Louis

Thu 5/14

7:05 am-2:47 pm

1 stop7h 42m

$440

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

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 31m

Direct flights

None
The fastest flight from Sioux Falls to St. Louis takes 3h 31m
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 31m 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
8,248 reviews
Search Delta flights
American AirlinesPriceFrom $243Free CancellationRating
7.1
11,381 reviews
Search American Airlines flights
United AirlinesPriceFrom $268Free CancellationRating
7.4
9,389 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
Florissant
Maryland Heights
O'Fallon
St. Peters
Wentzville
Collinsville
Alton
Fenton
Farmington
Edwardsville
Festus
Clayton
Eureka
Litchfield
Glencoe
Grafton

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.

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.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Sat 4/4
Sat 4/11
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to the United States