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FSD - STL

Find cheap flights from Sioux Falls to St. Louis from $100

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Sioux Falls to St. Louis departing on 5/1. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
0 bags
Thu 5/23
Thu 5/30

Search hundreds of travel sites at once for deals on flights to St. Louis

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Sioux Falls to St. Louis, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Sioux Falls to St. Louis, as well as popular online travel agencies
In the last 7 days travelers have searched 44,632,927 times on KAYAK, and here is why:

Save 22% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Filter your dealsChoose cabin class, free Wi-Fi and more.

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Cheap flight deals from Sioux Falls to St. Louis (FSD-STL)

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Sioux Falls to St. Louis that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices and deals for you by selecting your travel dates.
Choose your dates
4:27 pm - 9:30 amFSD-STL
17h 03m1 stop
5:36 pm - 4:53 pmSTL-FSD
23h 17m1 stop
$227Frontier
Find Deal
Sun, Jun 9 - Fri, Jun 14
5:00 am - 10:59 amFSD-STL
5h 59m1 stop
5:37 pm - 10:53 pmSTL-FSD
5h 16m1 stop
$242Delta
Find Deal
Sat, May 4 - Tue, May 7
8:00 am - 2:23 pmFSD-STL
6h 23m1 stop
5:25 pm - 9:53 pmSTL-FSD
4h 28m1 stop
$246United Airlines
Find Deal
Sat, May 4 - Tue, May 7
4:09 pm - 9:55 pmFSD-STL
5h 46m1 stop
6:06 am - 10:17 amSTL-FSD
4h 11m1 stop
$263Delta
Find Deal
Fri, Jun 7 - Sun, Jun 9
9:10 am - 9:49 pmFSD-STL
12h 39m2 stops
5:25 pm - 9:53 pmSTL-FSD
4h 28m1 stop
$416United Airlines
Find Deal
Sat, May 4 - Tue, May 7
9:25 am - 6:05 pmFSD-STL
8h 40m1 stop
7:45 am - 2:55 pmSTL-FSD
7h 10m2 stops
$427
Find Deal
Sun, Jun 9 - Fri, Jun 14
11:27 am - 3:46 pmFSD-STL
4h 19m1 stop
8:47 am - 8:33 pmSTL-FSD
11h 46m1 stop
$612United Airlines
Find Deal
Tue, May 7 - Wed, May 8
8:00 am - 7:19 pmFSD-STL
11h 19m2 stops
8:47 am - 8:33 pmSTL-FSD
11h 46m1 stop
$622United Airlines
Find Deal
Tue, May 7 - Wed, May 8
10:44 am - 5:18 pmFSD-STL
6h 34m1 stop
5:15 am - 5:28 pmSTL-FSD
12h 13m2 stops
$671American Airlines
Find Deal
Fri, Jun 7 - Sun, Jun 9
8:00 am - 7:19 pmFSD-STL
11h 19m2 stops
6:19 am - 8:33 pmSTL-FSD
14h 14m2 stops
$716United Airlines
Find Deal
Tue, May 7 - Wed, May 8

Flights from Sioux Falls to St. Louis - Travel Insights & Trends

Get data-powered insights and trends into flights from Sioux Falls to St. Louis to help you find the cheapest flights, the best time to fly and much more.

What’s the cheapest day of the week to fly from Sioux Falls to St. Louis?

The average price of all flights from Sioux Falls to St. Louis clicked on KAYAK for each day over the last 12 months.
If you are looking for a flight deal from Sioux Falls to St. Louis, look for departures on Sundays and avoid leaving on a Thursday, as it's usually the priciest day. When flying back from St. Louis, Saturday is the cheapest day to fly and Sunday is the most expensive.

What is the cheapest month to fly from Sioux Falls to St. Louis?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from Sioux Falls to St. Louis, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.
The cheapest month for flights from Sioux Falls to St. Louis is August, where tickets cost $318 on average. On the other hand, the most expensive months are October and January, where the average cost of tickets is $630 and $615 respectively.

How far in advance should I book a flight from Sioux Falls to St. Louis?

To calculate daily average prices, KAYAK takes all prices for each day before departure over the last year for flights from Sioux Falls to St. Louis, removes the top 0.1% to account for outliers, and then takes the average of all the values for each month.
To get a below average price on the flight from Sioux Falls to St. Louis, you should book around 1 week before departure. For the absolute cheapest price, our data suggests you should book 26 days before departure.

Which airlines provide the cheapest flights from Sioux Falls to St. Louis?

The cheapest price for the route for each airline clicked by KAYAK users in the last 72 hours.
In the last 3 days, Frontier offered the best one-way deal for that route, at $100. KAYAK users also found Sioux Falls to St. Louis round-trip flights on Frontier from $227 and on Delta from $242.

Good to know

Low season

May

High season

June

Cheapest flight

$100
Best time to beat the crowds with an average 10% drop in price.
Most popular time to fly with an average 10% increase in price.
Flight from Sioux Falls to St. Louis

When to book flights from Sioux Falls to St. Louis

Are your dates flexible? Find out the best times to travel from Sioux Falls to St. Louis based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Sioux Falls to St. Louis

  • What is the cheapest flight from Sioux Falls to St. Louis?

    In the last 3 days, the lowest price for a flight from Sioux Falls to St. Louis was $100 for a one-way ticket and $227 for a round-trip.

  • Do I need a passport to fly between Sioux Falls and St. Louis?

    A passport is not required to fly from Sioux Falls to St. Louis.

  • Which airports will I be using when flying from Sioux Falls to St. Louis?

    On your way to St. Louis, you’ll fly out from Sioux Falls Joe Foss Field. You’ll be landing at Lambert-St Louis.

  • Which aircraft models fly most regularly from Sioux Falls to St. Louis?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Sioux Falls to St. Louis?

    oneworld, Star Alliance, and SkyTeam are the airline alliances operating flights between Sioux Falls and St. Louis, with SkyTeam being the most commonly used for this route.

  • Which is the best airline for flights from Sioux Falls to St. Louis, Delta or United Airlines?

    The two airlines most popular with KAYAK users for flights from Sioux Falls to St. Louis are Delta and United Airlines. With an average price for the route of $412 and an overall rating of 8.0, Delta is the most popular choice. United Airlines is also a great choice for the route, with an average price of $452 and an overall rating of 7.4.

  • How does KAYAK find such low prices on flights from Sioux Falls to St. Louis?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Sioux Falls to St. Louis.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Sioux Falls to St. Louis?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to St. Louis from Sioux Falls is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Sioux Falls to St. Louis?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to St. Louis with an airline and back to Sioux Falls with another airline. Booking your flights between Sioux Falls and STL can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Sioux Falls to St. Louis?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to St. Louis from Sioux Falls up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Top 3 airlines serving from Sioux Falls to St. Louis

 
See real verified KAYAK customer reviews for airlines flying from Sioux Falls to St. Louis. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Sioux Falls to St. Louis? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
DeltaOverall score based on 11028 reviews
8.2boarding
8.6crew
7.5food
8.0entertainment
7.9comfort
Airline reviews

On my way home I had a layover. The flight from ATL to CLT was amended 5x while I was waiting. I could have driven home sooner. Overall from Dallas, Tx to Charlotte, NC I started my trip at 4:30pm, I didn’t get home until past midnight. I know things happen, but 5x to make me run back and forth in an airport from different terminals is excessive. I also upgraded to comfort + , I didn’t feel it was worth it. There was no benefit

2.0 MediocreMarisol, Apr 2024DFW - ATL
Read more about Delta reviews

On my way home I had a layover. The flight from ATL to CLT was amended 5x while I was waiting. I could have driven home sooner. Overall from Dallas, Tx to Charlotte, NC I started my trip at 4:30pm, I didn’t get home until past midnight. I know things happen, but 5x to make me run back and forth in an airport from different terminals is excessive. I also upgraded to comfort + , I didn’t feel it was worth it. There was no benefit

On my way home I had a layover. The flight from ATL to CLT was amended 5x while I was waiting. I could have driven home sooner. Overall from Dallas, Tx to Charlotte, NC I started my trip at 4:30pm, I didn’t get home until past midnight. I know things happen, but 5x to make me run back and forth in an airport from different terminals is excessive.

They did a fine job. Can't wait to use Delta in the future.

There was a loud squeaky sound the whole time we were flying.

Had a broken tray in business class. Crew just shrugged it off.

Seat back monitors and outlets were dead and not working.

Everything was great except for the seat. The backrest would not stay in the upright position.

I usually have a positive experience with Delta. Complimentary upgrades are always nice!

Flight delayed about 2 hrs so it made it a VERY late night

It was a crowded flight. They did the best they could.

Flight delayed from Cape Town to Washington then got diverted to miami and in miami we had to fend for ourselves , im still trying to get to Shreveport now

delay several times and wait extra long to board. no entertainment service because there are problem for some rows. always encounter some delays for the last flight of the day.

I just wrote a text which was supposed to be for the flight from Denver to spokane not Frankfurt to Denver.

On time every leg of the journey and exceptional staff at counter, gate, and on board. I haven’t travelled in US for a long time and was genuinely surprised how pleasant this was.

The delays (5 hrs) were a comedy of errors, and the multiple safety issues encountered were very concerning.

flight delays, staff only communicating when pushed, food service lasting a grand total of 7 minutes, stuck in seat from 45mins into flight until landing

Crew was great and did their best to make us comfortable and captain came out at the beginning to announce why the flight was delayed, weather situation up ahead, and kept us updated throughout the flight.

they made me check my carryon. There was space in the overhead bins.

Nice flight, nice crew but no cookie or napkin with my seltzer.

Trip was smooth bumpy from the wind but no issues at all the crew attendant was very pleasant and had great customer service

The Flight attendant had an attitude and didn't allow anyone any time to prepare for landing despite being absent throughout the entire trip

Flight boarded without pilots. Sat on plane for 3 hrs. after over an hour late boarding. Plane never took off. Had to deplane near midnight. Line for rebooking was 3 hours + long. I had to leave.

The flight was great but board was a nightmare. The gate was changed 4 times during the layover period

The experience was great and much better than the flight going out. of course I was in first class but the service was excellent

Cold air blew constantly on my legs almost making me numb.

Missed the flight because of them and up geting a rental car

Delayd flight out of atl as always miss my conection in dfw no flight untill next day

Comfort of seats, ease of boarding. Food selection could be better

i suspect i caught flu on this flight as i could hear someone coughing a few rows back and ended up with flu a few days later. also tiresome to have to watch movies on my device by holding up smartphone screen, would have liked to have in seat display.

Flight was fine. It took an unusually long time to have baggage delivered to the carousel in ORD.

Book cheap flights from Sioux Falls to St. Louis

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from Sioux Falls to St. Louis found on KAYAK in the last 72 hours.
5/1Wed
1 stopFrontier
19h 10mFSD-STL
$100
5/23Thu
1 stop
9h 10mFSD-STL
$200
5/26Sun
1 stopAmerican Airlines
7h 13mFSD-STL
$255
5/26Sun
2 stopsAmerican Airlines
14h 47mFSD-STL
$260
5/1Wed
3 stops
39h 51mFSD-STL
$291
5/1Wed
2 stopsUnited Airlines
24h 46mFSD-STL
$314
5/23Thu
3 stops
29h 42mFSD-STL
$420
5/23Thu
2 stopsUnited Airlines
25h 46mFSD-STL
$458

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Sioux Falls - St. Louis Flights

Departure:

Sioux Falls (FSD)United States

Destination:

St. Louis (STL)United States

Return flight deals:

St. Louis - Sioux Falls

Cabin classes:

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