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Cheap flights from Sioux Falls to St. Louis from $157

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 12/12. 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.
United Airlines Logo
9:00 am - 4:55 pm
FSD
-
STL
7h 55m1 stop
United Airlines Logo
4:15 pm - 11:44 pm
STL
-
FSD
7h 29m1 stop
$289United Airlines
mié., ene. 21 - sáb., ene. 24
American Airlines Logo
7:19 pm - 11:44 pm
FSD
-
STL
4h 25m1 stop
American Airlines Logo
5:16 am - 12:28 pm
STL
-
FSD
7h 12m1 stop
$299American Airlines
jue., dic. 18 - lun., dic. 22
American Airlines Logo
7:19 pm - 11:55 pm
FSD
-
STL
4h 36m1 stop
American Airlines Logo
5:16 am - 12:28 pm
STL
-
FSD
7h 12m1 stop
$319American Airlines
vie., dic. 19 - lun., dic. 22
United Airlines Logo
6:00 am - 1:16 pm
FSD
-
STL
7h 16m1 stop
United Airlines Logo
6:00 pm - 8:24 pm
STL
-
FSD
26h 24m1 stop
$389United Airlines
jue., ene. 8 - dom., ene. 11
Delta Logo
1:02 pm - 4:45 pm
FSD
-
STL
3h 43m1 stop
Delta Logo
6:35 am - 7:30 pm
STL
-
FSD
12h 55m2 stops
$440Delta
jue., ene. 8 - dom., ene. 11
United Airlines Logo
9:00 am - 4:55 pm
FSD
-
STL
7h 55m1 stop
United Airlines Logo
6:00 pm - 9:50 pm
STL
-
FSD
27h 50m3 stops
$453United Airlines
jue., ene. 8 - dom., ene. 11
American Airlines Logo
5:35 pm - 10:59 pm
FSD
-
STL
5h 24m1 stop
American Airlines Logo
4:06 pm - 10:43 pm
STL
-
FSD
6h 37m1 stop
$455American Airlines
lun., feb. 9 - jue., feb. 12
United Airlines Logo
9:00 am - 4:55 pm
FSD
-
STL
7h 55m1 stop
United Airlines Logo
6:00 pm - 9:50 pm
STL
-
FSD
27h 50m2 stops
$464United Airlines
jue., ene. 8 - dom., ene. 11
United Airlines Logo
5:18 pm - 2:30 pm
FSD
-
STL
21h 12m2 stops
United Airlines Logo
7:41 am - 2:40 pm
STL
-
FSD
6h 59m1 stop
$533United Airlines
lun., feb. 9 - jue., feb. 12
American Airlines Logo
7:11 am - 7:30 pm
FSD
-
STL
12h 19m2 stops
American Airlines Logo
5:16 am - 12:28 pm
STL
-
FSD
7h 12m1 stop
$573American Airlines
jue., dic. 18 - lun., dic. 22

American Airlines flights from Sioux Falls to St. Louis

Our best American Airlines deals on Sioux Falls to St. Louis flight tickets
American Airlines
Dec 18
FSD7:19 pmSioux Falls Joe Foss Field
4h 25m
1 stop
STL11:44 pmLambert-St Louis
Dec 22
STL5:16 amLambert-St Louis
7h 12m
1 stop
FSD12:28 pmSioux Falls Joe Foss Field
$299
Find similar
American Airlines
Dec 19
FSD7:19 pmSioux Falls Joe Foss Field
4h 36m
1 stop
STL11:55 pmLambert-St Louis
Dec 22
STL5:16 amLambert-St Louis
7h 12m
1 stop
FSD12:28 pmSioux Falls Joe Foss Field
$319
Find similar
American Airlines
Feb 9
FSD5:35 pmSioux Falls Joe Foss Field
5h 24m
1 stop
STL10:59 pmLambert-St Louis
Feb 12
STL4:06 pmLambert-St Louis
6h 37m
1 stop
FSD10:43 pmSioux Falls Joe Foss Field
$455
Find similar

Delta flights from Sioux Falls to St. Louis

Our best Delta deals on Sioux Falls to St. Louis flight tickets
Delta
Dec 10
FSD1:30 pmSioux Falls Joe Foss Field
3h 19m
1 stop
STL4:49 pmLambert-St Louis
Dec 14
STL6:00 amLambert-St Louis
4h 20m
1 stop
FSD10:20 amSioux Falls Joe Foss Field
$309
Find similar
Delta
Jan 8
FSD1:02 pmSioux Falls Joe Foss Field
3h 43m
1 stop
STL4:45 pmLambert-St Louis
Jan 11
STL6:35 amLambert-St Louis
12h 55m
2 stops
FSD7:30 pmSioux Falls Joe Foss Field
$440
Find similar
Delta
Dec 8
FSD5:14 amSioux Falls Joe Foss Field
6h 50m
1 stop
STL12:04 pmLambert-St Louis
Dec 9
STL6:00 amLambert-St Louis
6h 48m
1 stop
FSD12:48 pmSioux Falls Joe Foss Field
$799
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 diciembre 4, 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

mié. 1/21

9:00 am-4:55 pm

1 stop7h 55m

Lambert-St Louis

sáb. 1/24

4:15 pm-11:44 pm

1 stop7h 29m

$289

Sioux FallsSt. Louis

FSD - STL

FSDSTL

Sioux Falls Joe Foss Field

jue. 12/18

7:19 pm-11:44 pm

1 stop4h 25m

Lambert-St Louis

lun. 12/22

5:16 am-12:28 pm

1 stop7h 12m

$299

Sioux FallsSt. Louis

FSD - STL

FSDSTL

Sioux Falls Joe Foss Field

vie. 12/19

7:19 pm-11:55 pm

1 stop4h 36m

Lambert-St Louis

lun. 12/22

5:16 am-12:28 pm

1 stop7h 12m

$319

Sioux FallsSt. Louis

FSD - STL

FSDSTL

Sioux Falls Joe Foss Field

jue. 1/8

6:00 am-1:16 pm

1 stop7h 16m

Lambert-St Louis

dom. 1/11

6:00 pm-8:24 pm

1 stop26h 24m

$389

Sioux FallsSt. Louis

FSD - STL

FSDSTL

Sioux Falls Joe Foss Field

jue. 1/8

1:02 pm-4:45 pm

1 stop3h 43m

Lambert-St Louis

dom. 1/11

6:35 am-7:30 pm

2 stops12h 55m

$440

Sioux FallsSt. Louis

FSD - STL

FSDSTL

Sioux Falls Joe Foss Field

jue. 1/8

9:00 am-4:55 pm

1 stop7h 55m

Lambert-St Louis

dom. 1/11

6:00 pm-9:50 pm

3 stops27h 50m

$453

Sioux FallsSt. Louis

FSD - STL

FSDSTL

Sioux Falls Joe Foss Field

lun. 2/9

5:35 pm-10:59 pm

1 stop5h 24m

Lambert-St Louis

jue. 2/12

4:06 pm-10:43 pm

1 stop6h 37m

$455

Sioux FallsSt. Louis

FSD - STL

FSDSTL

Sioux Falls Joe Foss Field

jue. 1/8

9:00 am-4:55 pm

1 stop7h 55m

Lambert-St Louis

dom. 1/11

6:00 pm-9:50 pm

2 stops27h 50m

$464

Sioux FallsSt. Louis

FSD - STL

FSDSTL

Sioux Falls Joe Foss Field

lun. 2/9

5:18 pm-2:30 pm

2 stops21h 12m

Lambert-St Louis

jue. 2/12

7:41 am-2:40 pm

1 stop6h 59m

$533

Sioux FallsSt. Louis

FSD - STL

FSDSTL

Sioux Falls Joe Foss Field

jue. 12/18

7:11 am-7:30 pm

2 stops12h 19m

Lambert-St Louis

lun. 12/22

5:16 am-12:28 pm

1 stop7h 12m

$573

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, January 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 $222. 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

Fastest flight time

3h 25m

Direct flights

None
The fastest flight from Sioux Falls to St. Louis takes 3h 25m
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 43m 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
8,011 reviews
Search Delta flights
American AirlinesPriceFrom $243Free CancellationRating
7.2
11,047 reviews
Search American Airlines flights
United AirlinesPriceFrom $268Free CancellationRating
7.4
9,066 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
O'Fallon
Florissant
Fenton
Wentzville
Collinsville
St. Peters
Alton
Farmington
Clayton
Festus
Glencoe
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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