$324+ Cheap flights from Sioux Falls to St. Louis (FSD - STL)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 12/11. Fares are subject to change and may not be available on all flights or dates of travel.
FSD — STL
Dec 13 — Dec 201
Round-trip
1 adult, Economy
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Find cheap flights from Sioux Falls to St. Louis with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Sioux Falls to St. Louis
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Best
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Cheapest flights from Sioux Falls to St. LouisExplore the most affordable flight options available from Sioux Falls to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 13, 2026.
Explore the most affordable flight options available from Sioux Falls to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 13, 2026.
This United Airlines deal was found by Cheapflights users on 11/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/117:40 am -
1 stop4h 42m
Sun 12/136:55 pm -
1 stop4h 35m
Deal found 11/11![United Airlines logo]()
$324
This American Airlines deal was found by Cheapflights users on 11/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/25:57 pm -
1 stop5h 37m
Sun 12/65:50 am -
1 stop6h 34m
Deal found 11/11![American Airlines logo]()
$329
This United Airlines deal was found by Cheapflights users on 11/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/247:48 am -
1 stop6h 46m
Sat 11/285:00 am -
1 stop5h 32m
Deal found 11/9![United Airlines logo]()
$359
This American Airlines deal was found by Cheapflights users on 11/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/277:36 pm -
1 stop4h 18m
Tue 12/111:14 am -
2 stops9h 39m
Deal found 11/11![American Airlines logo]()
$364
This American Airlines deal was found by Cheapflights users on 11/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/257:36 pm -
1 stop4h 25m
Sun 11/298:12 pm -
1 stop4h 32m
Deal found 11/10![American Airlines logo]()
$369
This American Airlines deal was found by Cheapflights users on 11/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/203:23 pm -
1 stop4h 41m
Sun 11/226:00 am -
1 stop6h 33m
Deal found 11/10![American Airlines logo]()
$399
This Delta deal was found by Cheapflights users on 11/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/131:00 pm -
1 stop3h 31m
Sun 11/153:30 pm -
1 stop3h 36m
Deal found 11/11![Delta logo]()
$479
This American Airlines deal was found by Cheapflights users on 11/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/136:00 am -
1 stop8h 04m
Sun 11/156:00 am -
1 stop6h 28m
Deal found 11/9![American Airlines logo]()
$489
This United Airlines deal was found by Cheapflights users on 11/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/135:55 am -
1 stop6h 43m
Sun 11/156:50 pm -
1 stop4h 39m
Deal found 11/8![United Airlines logo]()
$499
This American Airlines deal was found by Cheapflights users on 11/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/225:57 pm -
1 stop6h 19m
Wed 12/238:22 pm -
1 stop4h 24m
Deal found 11/9![American Airlines logo]()
$503
Best flights from Sioux Falls to St. LouisDiscover carefully curated flight deals from Sioux Falls to St. Louis that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated November 13, 2026.
Discover carefully curated flight deals from Sioux Falls to St. Louis that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated November 13, 2026.
This United Airlines deal was found by Cheapflights users on 11/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/117:40 am -
1 stop4h 42m
Sun 12/136:55 pm -
1 stop4h 35m
Deal found 11/11![United Airlines logo]()
$324
This American Airlines deal was found by Cheapflights users on 11/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/25:57 pm -
1 stop5h 37m
Sun 12/65:50 am -
1 stop6h 34m
Deal found 11/11![American Airlines logo]()
$329
This Kiwi.com deal was found by Cheapflights users on 11/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/253:53 pm -
2 stops21h 38m
Sun 11/295:15 pm -
1 stop27h 40m
Deal found 11/10![Multiple Airlines logo]()
$614
This United Airlines deal was found by Cheapflights users on 11/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/247:48 am -
1 stop6h 46m
Sat 11/285:00 am -
1 stop5h 32m
Deal found 11/9![United Airlines logo]()
$359
This American Airlines deal was found by Cheapflights users on 11/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/225:57 pm -
1 stop6h 19m
Wed 12/238:22 pm -
1 stop4h 24m
Deal found 11/9![American Airlines logo]()
$503
This United Airlines deal was found by Cheapflights users on 11/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/201:20 pm -
2 stops10h 04m
Sun 11/226:50 pm -
1 stop4h 39m
Deal found 11/10![United Airlines logo]()
$841
This American Airlines deal was found by Cheapflights users on 11/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/2412:11 pm -
2 stops9h 48m
Sat 11/288:12 pm -
1 stop4h 43m
Deal found 11/9![American Airlines logo]()
$878
This United Airlines deal was found by Cheapflights users on 11/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/215:55 am -
2 stops9h 48m
Sun 11/221:40 pm -
1 stop6h 24m
Deal found 11/12![United Airlines logo]()
$856
Last-minute flights from Sioux Falls to St. LouisDiscover last-minute flight deals from Sioux Falls to St. Louis. Data last updated November 13, 2026 and is based on user searches.
Discover last-minute flight deals from Sioux Falls to St. Louis. Data last updated November 13, 2026 and is based on user searches.
This Delta deal was found by Cheapflights users on 11/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/131:00 pm -
1 stop3h 31m
Sun 11/153:30 pm -
1 stop3h 36m
Deal found 11/11![Delta logo]()
$479
This American Airlines deal was found by Cheapflights users on 11/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/136:00 am -
1 stop8h 04m
Sun 11/156:00 am -
1 stop6h 28m
Deal found 11/9![American Airlines logo]()
$489
This United Airlines deal was found by Cheapflights users on 11/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/135:55 am -
1 stop6h 43m
Sun 11/156:50 pm -
1 stop4h 39m
Deal found 11/8![United Airlines logo]()
$499
This American Airlines deal was found by Cheapflights users on 11/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/203:23 pm -
1 stop4h 41m
Sun 11/226:00 am -
1 stop6h 33m
Deal found 11/10![American Airlines logo]()
$399
This United Airlines deal was found by Cheapflights users on 11/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/247:48 am -
1 stop6h 46m
Sat 11/285:00 am -
1 stop5h 32m
Deal found 11/9![United Airlines logo]()
$359
This American Airlines deal was found by Cheapflights users on 11/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/257:36 pm -
1 stop4h 25m
Sun 11/298:12 pm -
1 stop4h 32m
Deal found 11/10![American Airlines logo]()
$369
This American Airlines deal was found by Cheapflights users on 11/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/277:36 pm -
1 stop4h 18m
Tue 12/111:14 am -
2 stops9h 39m
Deal found 11/11![American Airlines logo]()
$364
This American Airlines deal was found by Cheapflights users on 11/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/25:57 pm -
1 stop5h 37m
Sun 12/65:50 am -
1 stop6h 34m
Deal found 11/11![American Airlines logo]()
$329
This United Airlines deal was found by Cheapflights users on 11/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/117:40 am -
1 stop4h 42m
Sun 12/136:55 pm -
1 stop4h 35m
Deal found 11/11![United Airlines logo]()
$324
This American Airlines deal was found by Cheapflights users on 11/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/225:57 pm -
1 stop6h 19m
Wed 12/238:22 pm -
1 stop4h 24m
Deal found 11/9![American Airlines logo]()
$503
Find flight deals from Sioux Falls to St. Louis
Discover tips and strategies to find the most affordable flight options for your journey from Sioux Falls (FSD) to St. Louis (STL). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated November 13, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $324 (United Airlines) |
Popular in | May |
Cheapest in | December |
Average price | $418 |
Cheapflights 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, Cheapflights users made 7,457,451 searches. Data last updated November 13, 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
Cheapest round-trip
Quickest round-trip
Sioux FallsSt. Louis
FSD Sioux Falls Joe Foss Field - STL Lambert-St Louis
FSDSTL
Sioux Falls Joe Foss Field
Fri 12/11
7:40 am-12:22 pm
1 stop4h 42m
Lambert-St Louis
Sun 12/13
6:55 pm-11:30 pm
1 stop4h 35m
$324
Sioux FallsSt. Louis
FSD Sioux Falls Joe Foss Field - STL Lambert-St Louis
FSDSTL
Sioux Falls Joe Foss Field
Wed 12/2
5:57 pm-11:34 pm
1 stop5h 37m
Lambert-St Louis
Sun 12/6
5:50 am-12:24 pm
1 stop6h 34m
$329
Sioux FallsSt. Louis
FSD Sioux Falls Joe Foss Field - STL Lambert-St Louis
FSDSTL
Sioux Falls Joe Foss Field
Tue 11/24
7:48 am-2:34 pm
1 stop6h 46m
Lambert-St Louis
Sat 11/28
5:00 am-10:32 am
1 stop5h 32m
$359
Sioux FallsSt. Louis
FSD Sioux Falls Joe Foss Field - STL Lambert-St Louis
FSDSTL
Sioux Falls Joe Foss Field
Tue 12/22
5:57 pm-12:16 am
1 stop6h 19m
Lambert-St Louis
Wed 12/23
8:22 pm-12:46 am
1 stop4h 24m
$503
Sioux FallsSt. Louis
FSD Sioux Falls Joe Foss Field - STL Lambert-St Louis
FSDSTL
Sioux Falls Joe Foss Field
Wed 11/25
3:53 pm-1:31 pm
2 stops21h 38m
Lambert-St Louis
Sun 11/29
5:15 pm-8:55 pm
1 stop27h 40m
$614
Sioux FallsSt. Louis
FSD Sioux Falls Joe Foss Field - STL Lambert-St Louis
FSDSTL
Sioux Falls Joe Foss Field
Fri 11/20
1:20 pm-11:24 pm
2 stops10h 04m
Lambert-St Louis
Sun 11/22
6:50 pm-11:29 pm
1 stop4h 39m
$841
Sioux FallsSt. Louis
FSD Sioux Falls Joe Foss Field - STL Lambert-St Louis
FSDSTL
Sioux Falls Joe Foss Field
Sat 11/21
5:55 am-3:43 pm
2 stops9h 48m
Lambert-St Louis
Sun 11/22
1:40 pm-8:04 pm
1 stop6h 24m
$856
Sioux FallsSt. Louis
FSD Sioux Falls Joe Foss Field - STL Lambert-St Louis
FSDSTL
Sioux Falls Joe Foss Field
Tue 11/24
12:11 pm-9:59 pm
2 stops9h 48m
Lambert-St Louis
Sat 11/28
8:12 pm-12:55 am
1 stop4h 43m
$878
Sorted by cheapest first
Compare providers for flights from Sioux Falls to St. Louis
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Sioux Falls to St. Louis in November.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Sioux Falls-St. Louis flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Sioux Falls-St. Louis flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Sioux Falls-St. Louis flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Sioux Falls-St. Louis flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Sioux Falls-St. Louis flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from Sioux Falls to St. Louis
Have a flexible travel schedule? Discover the best time to fly to St. Louis from Sioux Falls with our price prediction graph.
FSD-STL
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Sioux Falls to St. Louis
What is the cheapest month to book a flight from Sioux Falls to St. Louis?
Currently, December is the cheapest month in which you can book a flight from Sioux Falls to St. Louis (average of $297). Flying from Sioux Falls to St. Louis in May is currently the most expensive (average of $696). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
How much does it cost to fly round-trip from Sioux Falls to St. Louis?
Airfare is below average for this route at the moment.
Sioux Falls to St. Louis flights typically cost between $340 and $487 in December.The cheapest round-trip price found within the last 5 days was $324 on United Airlines (Dec 11-Dec 13).
Reviews of airlines servicing St. Louis
Get insights into the airlines that provide service to St. Louis. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to St. Louis. Reviews last updated November 13, 2026.
Read reviews from past customers who have flown Delta,United Airlines, andAmerican Airlines from Sioux Falls to St. Louis. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Crew
8.5
Overall
7.8
Boarding
8.1
Comfort
7.8
Food
7.2
Entertainment
7.8
Reviews
1 / 20
6.0
GoodEllen,Oct 2026
GRR - ATL
Crew
8.5
Overall
7.8
Boarding
8.1
Comfort
7.8
Food
7.2
Entertainment
7.8
Reviews
1 / 20
6.0
GoodEllen,Oct 2026
GRR - ATL
Crew
8.5
Overall
7.8
Boarding
8.1
Comfort
7.8
Food
7.2
Entertainment
7.8
Reviews
1 / 20
6.0
GoodEllen,Oct 2026
GRR - ATL
Crew
8.5
Overall
7.8
Boarding
8.1
Comfort
7.8
Food
7.2
Entertainment
7.8
Reviews
1 / 20
6.0
GoodEllen,Oct 2026
GRR - ATL
Related info for your journey
Find useful and relevant information for your journey from Sioux Falls to St. Louis. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Traveling to a place near St. Louis?
Book flights to St. Louis if you plan to visit one of these locationsFairview Heights
O'Fallon
Fenton
Eureka
Wentzville
Maryland Heights
Chesterfield
Swansea
Edwardsville
Glencoe
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Sioux Falls and St. Louis flights
Browse other Sioux Falls and St. Louis flight options. Last updated on November 13, 2026.
Other flights from Sioux Falls
Browse through other flights departing from Sioux Falls. Flights are based on user searches made on Cheapflights and were last updated on November 13, 2026.
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Other flights to St. Louis
Explore flights to St. Louis departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on November 13, 2026.
Top 3 airlines flying from Sioux Falls to St. Louis
Discover the top 3 airlines that operate flights from Sioux Falls to St. Louis. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated November 13, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$192 | Average$367 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$243 | Average$323 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$249 | Average$388 | FlexibilityNo cancel fee | On-timeN/A |