TYS - FSD

$317 Find Cheap Flights from Knoxville to Sioux Falls

This is the cheapest round-trip flight price found by a KAYAK user in the last 72 hours by searching for a flight from Knoxville to Sioux Falls departing on 1/4. 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
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Sioux Falls

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Knoxville to Sioux Falls, 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 Knoxville to Sioux Falls, as well as popular online travel agencies
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Everything you should know

Cheapest round-trip
$317
Multiple Airlines
Sun 1/4Thu 1/8
TYS - FSD • 1 stop
Cheapest one-way
Multiple Airlines
Sun 12/21
TYS - FSD • multi-stop
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Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Knoxville to Sioux Falls (TYS-FSD)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Knoxville to Sioux Falls 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 for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Knoxville to Sioux Falls

Sun, Jan 4 - Thu, Jan 8
Multiple Airlines Logo
4:26 pm - 7:55 pm
TYS
-
FSD
28h 29m1 stop
Multiple Airlines Logo
6:02 pm - 10:28 pm
FSD
-
TYS
27h 26m1 stop
$317Multiple Airlines
Sat, Jan 31 - Tue, Feb 3
United Airlines Logo
6:45 am - 10:47 am
TYS
-
FSD
5h 02m1 stop
United Airlines Logo
3:11 pm - 8:52 pm
FSD
-
TYS
4h 41m1 stop
$339United Airlines
Sat, Jan 31 - Tue, Feb 3
United Airlines Logo
6:45 am - 10:47 am
TYS
-
FSD
5h 02m1 stop
United Airlines Logo
11:22 am - 11:44 pm
FSD
-
TYS
11h 22m2 stops
$344United Airlines
Sat, Jan 31 - Tue, Feb 3
United Airlines Logo
11:40 am - 9:50 pm
TYS
-
FSD
11h 10m2 stops
United Airlines Logo
7:30 am - 7:50 pm
FSD
-
TYS
11h 20m2 stops
$349United Airlines
Sun, Jan 4 - Thu, Jan 8
Multiple Airlines Logo
4:26 pm - 7:55 pm
TYS
-
FSD
28h 29m1 stop
Multiple Airlines Logo
7:45 pm - 4:50 pm
FSD
-
TYS
20h 05m2 stops
$385Multiple Airlines
Sun, Feb 8 - Wed, Feb 11
Allegiant Air Logo
9:00 am - 5:12 pm
TYS
-
FSD
9h 12m1 stop
Allegiant Air Logo
12:54 pm - 5:10 pm
FSD
-
TYS
27h 16m1 stop
$539Allegiant Air
Sun, Feb 8 - Wed, Feb 11
American Airlines Logo
7:54 am - 11:51 am
TYS
-
FSD
4h 57m1 stop
American Airlines Logo
12:26 pm - 11:59 pm
FSD
-
TYS
10h 33m2 stops
$636American Airlines
Sun, Feb 8 - Wed, Feb 11
American Airlines Logo
10:11 am - 5:45 pm
TYS
-
FSD
8h 34m2 stops
American Airlines Logo
12:26 pm - 11:59 pm
FSD
-
TYS
10h 33m2 stops
$641American Airlines
Sun, Jan 4 - Thu, Jan 8
Multiple Airlines Logo
12:40 pm - 9:52 am
TYS
-
FSD
22h 12m2 stops
Multiple Airlines Logo
11:43 am - 5:28 pm
FSD
-
TYS
28h 45m3 stops
$683Multiple Airlines
Sun, Jan 4 - Thu, Jan 8
Multiple Airlines Logo
9:16 pm - 9:11 am
TYS
-
FSD
12h 55m1 stop
Multiple Airlines Logo
11:43 am - 5:28 pm
FSD
-
TYS
28h 45m3 stops
$768Multiple Airlines
Booking Insights

KAYAK's insights & trends for Knoxville to Sioux Falls flights

Get data-powered insights and trends into flights from Knoxville to Sioux Falls 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 Knoxville to Sioux Falls?

The average price of all round-trip flights from Knoxville to Sioux Falls clicked on KAYAK for each day over the last 12 months.

Your flight ticket price will generally be cheaper if you fly to Sioux Falls on a Friday and more expensive on a Thursday. On your return trip to Knoxville, you should consider flying back on a Saturday, and avoid Thursdays for better deals.

Good to know

Cheapest flight$317
Most popular time to fly with an average 56% increase in price.
Flight from Knoxville to Sioux Falls

When to book flights from Knoxville to Sioux Falls

Are your dates flexible? Find out the best times to travel from Knoxville to Sioux Falls 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 Knoxville to Sioux Falls

  • What is the cheapest flight from Knoxville to Sioux Falls?

    In the last 3 days, the lowest price for a flight from Knoxville to Sioux Falls was $317 for a round-trip ticket.

  • Do I need a passport to fly between Knoxville and Sioux Falls?

    No

  • Which airports will I be using when flying from Knoxville to Sioux Falls?

    Knoxville and Sioux Falls are both served by 1 main airport. You will leave Knoxville from Knoxville McGhee Tyson and will be arriving at Sioux Falls Joe Foss Field.

  • Which aircraft models fly most regularly from Knoxville to Sioux Falls?

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

  • Which airline alliances offer flights from Knoxville to Sioux Falls?

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

  • Which is the best airline for flights from Knoxville to Sioux Falls, United Airlines or American Airlines?

    The two airlines most popular with KAYAK users for flights from Knoxville to Sioux Falls are United Airlines and American Airlines. With an average price for the route of $462 and an overall rating of 7.4, United Airlines is the most popular choice. American Airlines is also a great choice for the route, with an average price of $443 and an overall rating of 7.2.

  • How does KAYAK find such low prices on flights from Knoxville to Sioux Falls?

    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 Knoxville to Sioux Falls.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Sioux Falls from Knoxville 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 Knoxville to Sioux Falls?

    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 Sioux Falls with an airline and back to Knoxville with another airline. Booking your flights between Knoxville and FSD 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 Knoxville to Sioux Falls?

    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 Sioux Falls from Knoxville up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airlines flying from Knoxville to Sioux Falls

 
See real verified KAYAK customer reviews for airlines flying from Knoxville to Sioux Falls. 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 Knoxville to Sioux Falls? 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.
7.4
United AirlinesOverall score based on 9100 reviews
6.6Food
7.3Comfort
8.1Crew
7.7Boarding
7.1Entertainment
Airline reviews

Very turbulent trip made it pretty bearable, plus the lack of refreshments served and the lack of any air conditioning before takeoff which took an hour or more.

2.0 MediocreDerrick, Dec 2025
MCO - EWR
Read more United Airlines reviews

Very turbulent trip made it pretty bearable, plus the lack of refreshments served and the lack of any air conditioning before takeoff which took an hour or more.

Flight was late - I was downgraded from first class to coach

Not good - outbound flight was delayed and missed my connection even though I got to the gate after running through the airport - the agent would not let me on because the door was closed (flight had not left). There was no notification from United - overall experience was very disappointing. Additionally, I was downgraded from first class to coach on the alternative flight

The flight was on time. I generally don’t drink or eat on short flights and the seats were good and the flight attendants were friendly. That’s all I expect

It was nice to have gotten up upgraded to first class with a meal on a three hour flight

United have really come back. Airport and boarding process is clear and good, app and information also very good

Flight was delayed 8 times. We were sitting at the airport for 14 hours. We got 2 hours of sleep (if that) on what was not meant to be a red-eye.

After a delay at the gate, C3, at Ohare on Sunday, I left my Blk ski coat on the bench at the gate, lost! Please review my lob claim, thx.

Very bad! They kept delaying my flight and wouldn’t do anything about it

They brought an empty plane to the gate. Then a flight delay was announced for maintenance and waiting on a part. I was then put on a flight to San Francisco instead with a connecting flight to my final destination. Arrived at my final destination 2 hours late.

For whatever reason, the flight was not catered -we were told it would be a 45 minute delay waiting for catering - so no food. There were opened candy and peanuts in the seatback pocket. Flight landed early in DFW but due to the assigned gate not being available, we sat on the ground for 30 minutes waiting for the gate to open - making the flight actually arrive at the gate late.

The pilot greased the landing and the crew was fantastic.

I bought wifi and most of the flight could not even use it my apps would just spin. I couldn't even listen to music. super frustrating.

delayed due to weather. Could not communicate with family since the wifi was broken

Experience was good, however I had a delay due to weather happening and had to re purchase a seat on a new plane for a higher price (could be my own issue and misunderstanding) but other than that situation. First time flyer (by myself) was terrific!! The last from ORD to ALO didn't have wifi, but it was only 45 minutes so I'm sure that was part of the reason. Overall my experience was great! Next time I will remember to buy tickets with longer layovers. The delays really saved my overall anxiety. :)

Flight was on time is the only good thing. Person loading the plane called 1-6 to board at the same time, made it chaotic. Plane was too small for even putting backpacks in overhead. Seat for normal sized people were too small. The WIFI didn't work. When we landed had to wait because not enough ground crew.

Did not understand a single word the attendant said on the pa system. I was glad it was not an emergency.

Gate was overcrowded. Gate agents performed very well. Flight crew was top notch! Efficient & professional & courteous. Both meals not thermalized well. Dinner main dish was actually cold in the center. Almost inedible. Breakfast sandwich was lukewarm.

The boarding was as always, the crew tried their best but not enough. The food was a disaster I had dietary restrictions that were half met because the company did not loaded the food for the flight. The entertainment screen was fine but content was not and also they removed the free messaging option from the flight and they charged 30 dollars for that crappy bandwidth. This flight is not worth the cost and the company is going down on quality.

Awful. They won’t help me with anything. I booked on American but they abdicated to Iberia. The ticket was overpriced. Everything negative

Everything you need to know for your flight from Knoxville to Sioux Falls

Information on your arrival and departure airports