TYS - PIA

$239 Find Cheap Flights from Knoxville to Peoria

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 Peoria departing on 9/30. 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

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

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Knoxville to Peoria, 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 Peoria, as well as popular online travel agencies
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Flight Deals

Cheap Flights from Knoxville to Peoria (TYS-PIA)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Knoxville to Peoria 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 Peoria

Tue, Sep 30 - Sat, Oct 4
United Airlines Logo
5:53 pm - 10:15 pmTYS-PIA
5h 22m1 stop
United Airlines Logo
3:56 pm - 10:50 pmPIA-TYS
5h 54m1 stop
$239United Airlines
Find Deal
Tue, Sep 30 - Sat, Oct 4
American Airlines Logo
6:00 am - 10:54 amTYS-PIA
5h 54m1 stop
American Airlines Logo
6:54 am - 4:49 pmPIA-TYS
8h 55m2 stops
$244American Airlines
Find Deal
Sat, Feb 21 - Tue, Feb 24
American Airlines Logo
11:04 am - 3:46 pmTYS-PIA
5h 42m1 stop
American Airlines Logo
6:25 am - 10:44 amPIA-TYS
3h 19m1 stop
$289American Airlines
Find Deal
Sat, Feb 21 - Tue, Feb 24
American Airlines Logo
11:04 am - 3:44 pmTYS-PIA
5h 40m2 stops
American Airlines Logo
6:25 am - 10:44 amPIA-TYS
3h 19m1 stop
$294American Airlines
Find Deal
Sat, Feb 21 - Tue, Feb 24
American Airlines Logo
11:04 am - 3:44 pmTYS-PIA
5h 40m2 stops
American Airlines Logo
10:46 am - 9:31 pmPIA-TYS
9h 45m2 stops
$299American Airlines
Find Deal
Tue, Sep 30 - Sat, Oct 4
American Airlines Logo
11:18 am - 5:45 pmTYS-PIA
7h 27m2 stops
American Airlines Logo
6:54 am - 4:49 pmPIA-TYS
8h 55m2 stops
$398American Airlines
Find Deal

Everything you should know

Top airlines
United Airlines
Cheapest • from $239 (round-trip)
United Airlines
Best reviews • 7.4 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to travel
January
Cheapest • 41% price drop
January
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Cheapest round-trip
$239
Typical prices: $288-372
United Airlines
Tue 9/30Sat 10/4
TYS - PIA • 1 stop
Cheapest one-way
Multiple Airlines
Wed 9/17
TYS - PIA • multi-stop
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KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Peoria!
Booking Insights

KAYAK's insights & trends for Knoxville to Peoria flights

Get data-powered insights and trends into flights from Knoxville to Peoria to help you find the cheapest flights, the best time to fly and much more.

How much is a round-trip flight from Knoxville to Peoria, Illinois?

What’s the cheapest day of the week to fly from Knoxville to Peoria?

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

When flying from Knoxville to Peoria, you should consider leaving on a Wednesday and avoid Thursdays if you are looking for the best rates. For your return to Knoxville, you’ll find the best rates on Tuesdays and the most expensive ones on Thursdays.

What is the cheapest month to fly from Knoxville to Peoria?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Knoxville to Peoria, 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 Knoxville to Peoria is January, where tickets cost $238 (return) on average. On the other hand, the most expensive months are March and December, where the average cost of round-trip tickets is $756 and $635 respectively.

Good to know

Low seasonMarch
Cheapest flight$239
Best time to beat the crowds but there is an average 87% increase in price.
Most popular time to fly and prices are also 41% lower on average.
Flight from Knoxville to Peoria

When to book flights from Knoxville to Peoria

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

  • What is the cheapest flight from Knoxville to Peoria?

    In the last 3 days, the lowest price for a flight from Knoxville to Peoria was $239 for a round-trip ticket.

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

    Even though you are not required to have a passport, keep in mind that an official ID is needed to board the airplane.

  • Which aircraft models fly most regularly from Knoxville to Peoria?

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

  • Which airline alliances offer flights from Knoxville to Peoria?

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

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

    The two airlines most popular with KAYAK users for flights from Knoxville to Peoria are United Airlines and American Airlines. With an average price for the route of $359 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 $288 and an overall rating of 7.2.

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

    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 Peoria.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Peoria 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 Peoria?

    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 Peoria with an airline and back to Knoxville with another airline. Booking your flights between Knoxville and PIA 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 Peoria?

    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 Peoria 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 Peoria

 
See real verified KAYAK customer reviews for airlines flying from Knoxville to Peoria. 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 Peoria? 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 8924 reviews
7.1Entertainment
7.3Comfort
8.1Crew
7.7Boarding
6.6Food
Airline reviews

Flight attendant in first class gave poor service (like he didn't want to be there) and food was awful. We sat waiting for gate upon arrival over 45 mins.

2.0 MediocreAnonymous, Aug 2025RSW - ORD
Read more United Airlines reviews

Flight attendant in first class gave poor service (like he didn't want to be there) and food was awful. We sat waiting for gate upon arrival over 45 mins.

Weather delay in Chicago?. No sense of urgency to make connection in Chicago for our connecting flight that wasn't delayed. Connection was missed.

Overall it was good. I missed my connection but I was put on another flight.

Overall a very poor experience - booked premium economy tickets but due to last minute flight delays , all my itinery went for a toss and had to fly economy class with no access to lounge or any compensation by united airlines to make up for the flight delays . i had expected better experience than that from united.

It was fine, definitely older planes with no charging or anything. There’s no entertainment set up on board, but it is nice that they allow you to access the in flight entertainment from your phone without having to pay for the Wi-Fi and they do offer free texting.

I liked that the flight was nonstop from ORD to CIU for $200 round trip.

The schedule to Moline changed 5 times. The gate changed 6 times. That is a pathetic way to run an airline. No wonder that no one in our company flies on United Express to or from Moline. Changes happen most of the time. I learned my lesson on this trip…never again!

While the staff was pleasant and helpful, the following observations are for your awareness. There was some delay on the tarmac on take off and landing. The paid lunch/food offerings were limited. Entertainment was only available on WiFi at a cost.

The first flight was better in terms of the aircraft.

Smooth flight. Boarding was chaotic. Could not hear the gate agent over the intercom. People were lined up in the wrong lines. Groups one and two were told to board through line one and group 3 through line 2. All very confusing. Once in the air, the flight was smooth. There was no entertainment option on this aircraft, even though it was a larger aircraft.

Any flight to ORD after about 2pm this summer has been challenging. Flight was delayed getting in (coming from ORD) and that led to it not leaving before a ground stop due to lightening before they could fuel the plane, and so forth. They made up some time but we were still late in arriving at ORD, and that led to missed connections.

Food was ok, but not as good as I have had before on AA.

Pretty good. The food was just mediocre, the boarding and crew were good.

My flight got switched and my prepaid bag didnt transfer over properly so I paid to check ANOTHER BAG. I was placed in a middle seat and it was just miserable. At least it was a bulkhead row so I had legroom. The flight just never seem3d to end

Was not able to watch most shows on the entertainment site. They would not load

On Wednesday, July 30 we were in mid flight from Manchester to Charlotte and we turned around because the right engine was malfunctioning. That was the last flight out of Manchester that night. I was rebooked for Thursday, which became a weather event Friday. There were no seats left on the flight from Manchester to Charlotte. Consequently I didn’t leave Manchester until Saturday morning and we flew to Chicago so to say the least my scheduled flight and return to Iowa was three days off and it messed with my business schedule. Consequently cash flow. I would like some sort of acknowledgment of this event.

Dreadful experience. Our flight was delayed more than 8 hours due to a maintenance issue and the assistance from rebooking was poor. I was travelling with a bad knee and needed assistance waited in one place more than 3 hours before someone came with a wheelchair. The woman next to me was a 91 year old great grandmother who had waited more than 4 hours. There were moments of support from the staff but it appeared as they were going against the direction of management. It was apathy, lack of ownership and dismissive responses with small moments of kindness and understanding typically from grey haired, female, veteran staff..

Couldn’t get the door on the plane to close leading to a nearly 2 hour delay. But, hey at least they didn’t cancel the flight.

The flight was fine and the crew awesome. The problem is ORD and AA. Computers went down, ORD fell apart and a 40 min flight turned into a 3 hour trip. Guess the answer is to not try and fly to ORD after noon. But, as I said, crew was awesome and did everything they could to lesson the flight time.

The flight was fine but the 8 hour delay in Chicago was awful - 5 gate changes and repeated delays without an explanation. No vouchers. Nothing.

Everything you need to know for your flight from Knoxville to Peoria

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