What airlines fly to Knoxville?

American Airlines, Delta and United Airlines are the top three most popular airlines that fly to Knoxville from Sioux City according to our data. American Airlines is the first choice among our users, with 54% of people opting to fly with this airline when traveling to Knoxville. Keep in mind that there are 3 different airlines that fly to Knoxville on a routine basis, so you have a few additional options to choose from.

When did momondo last update prices for flights from Sioux City Sioux Gateway Airport to Knoxville McGhee Tyson Airport?

Prices for flights from Sioux City Sioux Gateway Airport to Knoxville McGhee Tyson Airport were last updated today.

How old do you have to be to fly from Sioux City Sioux Gateway Airport to Knoxville McGhee Tyson Airport?

The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Sioux City Sioux Gateway Airport to Knoxville McGhee Tyson Airport.

What documentation or ID do you need to fly to Knoxville McGhee Tyson Airport?

The travel and health documents required for your trip to Knoxville McGhee Tyson Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Knoxville McGhee Tyson Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

$334 Cheap Flights from Sioux City to Knoxville in 2025

1 adult

0 bags

Save money when you book flights with momondo

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

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

Trusted and free

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

Price Alerts

Not ready to book? to track prices.

Search flight deals

Find the cheapest flights from Sioux City to Knoxville

Round-trip

One-way

Cheap round-trip flights

These are some of the best round-trip flight deals from Sioux City to Knoxville that have been recently found on momondo from popular airlines, departing in the coming months.

5:15 pm - 10:30 pmSUX-TYS

28h 15m1 stop

7:00 am - 10:12 pmTYS-SUX

16h 12m1 stop

$508United Airlines

Find Deal

Thu, Feb 20 - Mon, Feb 24

5:15 pm - 4:54 pmSUX-TYS

22h 39m2 stops

7:00 am - 10:12 pmTYS-SUX

16h 12m1 stop

$518United Airlines

Find Deal

Thu, Feb 20 - Mon, Feb 24

5:15 pm - 1:15 pmSUX-TYS

19h 00m2 stops

7:25 pm - 10:12 pmTYS-SUX

27h 47m2 stops

$523United Airlines

Find Deal

Thu, Feb 20 - Mon, Feb 24

United Airlines flights from Sioux City to Knoxville

Our best United Airlines deals on Sioux City to Knoxville flight tickets

United Airlines

Feb 20

SUX5:15 pmSioux City Sioux Gateway

28h 15m

1 stop

TYS10:30 pmKnoxville McGhee Tyson

Feb 24

TYS7:00 amKnoxville McGhee Tyson

16h 12m

1 stop

SUX10:12 pmSioux City Sioux Gateway

$508

Find similar

United Airlines

Feb 20

SUX5:15 pmSioux City Sioux Gateway

22h 39m

2 stops

TYS4:54 pmKnoxville McGhee Tyson

Feb 24

TYS7:00 amKnoxville McGhee Tyson

16h 12m

1 stop

SUX10:12 pmSioux City Sioux Gateway

$518

Find similar

United Airlines

Feb 20

SUX5:15 pmSioux City Sioux Gateway

19h 00m

2 stops

TYS1:15 pmKnoxville McGhee Tyson

Feb 24

TYS7:25 pmKnoxville McGhee Tyson

27h 47m

2 stops

SUX10:12 pmSioux City Sioux Gateway

$523

Find similar

How to get the cheapest flight ticket from Sioux City to Knoxville

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

Prices

Airlines

What is the cheapest day to depart on your flight to Knoxville?

The cheapest day to depart from Sioux City to Knoxville is on a Tuesday. Travelers who choose to depart for Knoxville on a Tuesday will often find tickets for as low as $339. When flying out on a Tuesday, the most expensive travel day of the week, you can expect to see flight prices from Sioux City to Knoxville for around $339.

When to book flights from Sioux City to Knoxville

Are you open to changing your travel dates? Check out the ideal times to fly from Sioux City to Knoxville according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap Sioux City to Knoxville (SUX to TYS) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Sioux City to Knoxville

Best Price Found	$508
Fastest flight time	19h 00m
Direct flights	None
Airports in Knoxville	1 airport

The best flight deal from Sioux City to Knoxville found on momondo in the last 72 hours is $508

The fastest flight from Sioux City to Knoxville takes 19h 00m

There are no direct flights from Sioux City to Knoxville. Popular non-direct route for this connection is Sioux City Sioux Gateway Airport - Knoxville McGhee Tyson Airport.

There is 1 airport near Knoxville: Knoxville McGhee Tyson (TYS)

Search flight deals

How far is Sioux City Sioux Gateway to Knoxville McGhee Tyson by plane?
The straight-line distance from Sioux City Sioux Gateway to Knoxville McGhee Tyson is 804.5 mi. 19h 00m is a normal flight duration for this route.
When did momondo last update prices for flights from Sioux City Sioux Gateway Airport to Knoxville McGhee Tyson Airport?
Prices for flights from Sioux City Sioux Gateway Airport to Knoxville McGhee Tyson Airport were last updated today.
How old do you have to be to fly from Sioux City Sioux Gateway Airport to Knoxville McGhee Tyson Airport?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Sioux City Sioux Gateway Airport to Knoxville McGhee Tyson Airport.
What documentation or ID do you need to fly to Knoxville McGhee Tyson Airport?
The travel and health documents required for your trip to Knoxville McGhee Tyson Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Knoxville McGhee Tyson Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Pigeon Forge

Gatlinburg

Cherokee

Bryson City

Morristown

Corbin

Maryville

Crossville

Murphy

Newport

Oak Ridge

Alcoa

Kodak

Clinton

Dandridge

Lenoir City

Jefferson City

Rockford

Why use momondo?

Why should I use momondo to find a flight deal from Sioux City to Knoxville?

Finding the right flight to Knoxville from Sioux City is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Knoxville quick and easy, saving you time and money.

Can I find flights from Sioux City to Knoxville with flexible booking policies on momondo?

momondo does allow users to show only those flights to Knoxville from Sioux City which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from Sioux City to Knoxville?

momondo provides multiple filters to help you find the best flight to Knoxville from Sioux City. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from Sioux City to Knoxville right now. Can momondo alert me if prices change?

Price alerts on flights to Knoxville from Sioux City are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.