The cheapest times to fly from SUX to TYS are

  • January 1st to February 25th
  • April 16th to June 24th (except the weeks of April 30th and May 21st)
  • July 9th to July 29th
  • September 10th to September 30th (except the week of September 17th)

based on data collected exclusively by Champion Traveler across tens of millions of flights. Among all the dates above, the very cheapest time to fly from SUX to TYS is late January and early February. Prices can be as high as $597 for Sunday flights during mid to late November, or as low as $325 for Tuesday flights around late January and early February.


When to Fly to Knoxville

Flying from Sioux City, IA (SUX) to Knoxville, TN (TYS) will usually cost between $327 to $468 per person if booking more than four weeks in advance. On average the very cheapest time to fly is late January and early February with an average ticket price of $353. Due to high demand the most expensive time to fly is mid to late November, with an average price of $451. Planning your trip to low-cost times can easily save you $98 on economy flights and even more on first-class flights. Generally, any price below $368 can be considered a good price for a round-trip SUX to TYS flight.

See below for a graph of average weekly prices for the SUX to TYS route. All prices are for round-trip tickets in USD.

SUX to TYS Flight Prices

Compared to other flights, the SUX to TYS flight is much cheaper than the average and costs less than the average flight leaving from Sioux City. The average price per mile (for a direct flight) is $0.28, which is below average.


Flight Prices by Day of the Week

Tuesday is usually the cheapest day to fly to TYS, and Wednesday the cheapest day to fly back into SUX. Sundays are the most expensive days to fly out or take a return trip. Selecting flights on the least expensive days could save you up to $79 (19%) on this flight.

Departing prices are for round-trip flights returning on the day of departure. For example, a flight departing on Tuesday and returning a week later will cost an average of $346. Return trip prices are from the TYS to SUX flight, and often highlight the quality of our data in showing the same trend.

Departing Prices by Day

Departure Day Prices

Return Trip Prices by Day

Return Day Prices


Nonstop Flights and Layovers

Travelers looking to fly from SUX to TYS can generally find a 1-layover flight. Because there is not usually a direct flight option the real-world direct flight time of 2 hour 26 minutes may not be realistic.


Flight Questions Answered

Still have questions about flying from SUX to TYS? We’ve got answers.

Which airlines fly this route?

You can find 2 major airlines flying this route most often: American, United, and potentially more during busy seasons.

How far away is it from McGhee Tyson Airport to Sioux Gateway/Col. Bud Day Field Airport?

The distance between the two airports is roughly 804 miles or 1294 kilometers.

How long does it take to fly from SUX to TYS?

The real-world flight time for a nonstop SUX to TYS flight is about 2 hour 26 minutes.

How many flights go between Sioux City, IA and Knoxville, TN?

It depends on the day of the week and the date, but a typical day might have around 17 available flights from SUX to TYS.


Airport Location Info


Departing Airport

Origination codeSUX
Origination airport nameSioux Gateway/Col. Bud Day Field Airport
CitySioux City, IA
Countrythe United States

Return Airport

Destination codeTYS
Destination airport nameMcGhee Tyson Airport
CityKnoxville, TN
Countrythe United States


Other Resources

Please note that while we’ve worked hard to analyzed tens of millions of flights to get you this data, we do not calculate current live prices or guarantee pricing. Please see our partners using the links above for current offers.