$456+ Cheap flights from Sioux City to Knoxville (SUX - TYS)
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/16. Fares are subject to change and may not be available on all flights or dates of travel.
Find cheap flights from Sioux City to Knoxville 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 City to Knoxville
Discover tips and strategies to find the most affordable flight options for your journey from Sioux City (SUX) to Knoxville (TYS). 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 June 12, 2025.
Round-trip from | $896 (United Airlines) |
|---|---|
One-way from | $456 (United Airlines) |
Find flight deals from Sioux City to Knoxville
Cheapest flights from Sioux City to KnoxvilleExplore the most affordable flight options available from Sioux City to Knoxville. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 12, 2025.
Explore the most affordable flight options available from Sioux City to Knoxville. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 12, 2025.
This United Airlines deal was found by Cheapflights users on 6/10. 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.
Cheapflights Fare Finder
Customize your flight search to find flights from Sioux City to Knoxville 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 2,558,603 searches. Data last updated June 12, 2025.
Use the filters below to find and compare flights from Sioux City to Knoxville that are best for you.
Fly from
Fly to
Route
Depart
Return
Price
Sioux CityKnoxville
SUX - TYS
SUXTYS
Sioux City Sioux Gateway
Wed 6/25
6:35 pm-10:27 am
2 stops14h 52m
Knoxville McGhee Tyson
Sun 6/29
5:46 pm-10:40 pm
1 stop5h 54m
Sioux CityKnoxville
SUX - TYS
SUXTYS
Sioux City Sioux Gateway
Tue 9/16
6:48 pm-1:38 pm
2 stops17h 50m
Best time to book a flight from Sioux City to Knoxville
Have a flexible travel schedule? Discover the best time to fly to Knoxville from Sioux City with our price prediction graph.
Cheapflights Insights
Everything you need to know about your flight from Sioux City to Knoxville
What is the cheapest month to book a flight from Sioux City to Knoxville?
Currently, January is the cheapest month in which you can book a flight from Sioux City to Knoxville (average of $296). Flying from Sioux City to Knoxville in March is currently the most expensive (average of $376). 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.
Rainfall in Knoxville by month
Plan your trip to Knoxville by taking into account the average rainfall totals by month.
In terms of precipitation, rainfall in Knoxville ranges from 2.7 - 4.8 inches per month. March is typically the wettest month, when rainfall can reach 4.8 in. October is typically the driest time to visit Knoxville when rainfall is around 2.7 in.
Temperature in Knoxville by month
Plan your trip to Knoxville by taking into account the average temperature totals by month.
If weather is an important factor for your trip to Knoxville, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 78.8 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 39.2 F).
Reviews of airlines servicing Knoxville
Get insights into the airlines that provide service to Knoxville. 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 Knoxville. Reviews last updated June 12, 2025.
Overall
Entertainment
Food
Boarding
Comfort
Crew
Reviews
Deb,Jan 2025
MKE - ORD
Overall
Entertainment
Food
Boarding
Comfort
Crew
Reviews
Deb,Jan 2025
MKE - ORD