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Peoria

$229+ Cheap flights from Knoxville to Peoria, IL (TYS - PIA)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/28. Fares are subject to change and may not be available on all flights or dates of travel.
TYS — PIA
Jan 3 — Jan 101
Sat 1/3
Sat 1/10
1 adult, Economy
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Cheap flight deals from Knoxville to Peoria

Cheapest flights from Knoxville to Peoria
Explore the most affordable flight options available from Knoxville to Peoria. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 4, 2025.

This Kiwi.com deal was found by Cheapflights users on 12/2. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/116:30 amTYS - PIA
2 stops32h 48mMultiple Airlines
Sun 12/146:40 pmPIA - TYS
1 stop25h 59mMultiple Airlines
Deal found 12/2$273
This American Airlines deal was found by Cheapflights users on 12/2. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/118:13 pmTYS - PIA
1 stop4h 54mAmerican Airlines
Sun 12/146:32 amPIA - TYS
1 stop8h 00mAmerican Airlines
Deal found 12/2$299
This United Airlines deal was found by Cheapflights users on 12/3. 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.
Sat 12/67:00 amTYS - PIA
1 stop4h 09mUnited Airlines
Mon 12/83:30 pmPIA - TYS
1 stop4h 34mUnited Airlines
Deal found 12/3$319
This American Airlines deal was found by Cheapflights users on 12/3. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/610:59 amTYS - PIA
2 stops9h 43mAmerican Airlines
Mon 12/85:15 pmPIA - TYS
1 stop4h 40mAmerican Airlines
Deal found 12/3$324
This Kiwi.com deal was found by Cheapflights users on 12/3. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/185:52 pmTYS - PIA
1 stop26h 30mAllegiant Air
Mon 12/228:12 pmPIA - TYS
1 stop24h 32mAllegiant Air
Deal found 12/3$344
This Kiwi.com deal was found by Cheapflights users on 12/2. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/63:45 pmTYS - PIA
1 stop27h 05mMultiple Airlines
Mon 12/89:11 pmPIA - TYS
2 stops37h 52mMultiple Airlines
Deal found 12/2$404
This Kiwi.com deal was found by Cheapflights users on 12/2. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/276:30 amTYS - PIA
1 stop27h 16mAllegiant Air
Fri 1/29:41 pmPIA - TYS
2 stops24h 57mAllegiant Air
Deal found 12/2$455
This American Airlines deal was found by Cheapflights users on 12/2. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/275:08 pmTYS - PIA
1 stop7h 23mAmerican Airlines
Fri 1/27:59 pmPIA - TYS
1 stop13h 51mAmerican Airlines
Deal found 12/2$529

Find flight deals from Knoxville to Peoria

Discover tips and strategies to find the most affordable flight options for your journey from Knoxville (TYS) to Peoria (PIA). 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 December 4, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$229
(United Airlines)

Popular in

March

Cheapest in

October

Average price

$635
Provider with most accurate pricing for Knoxville McGhee Tyson-Greater Peoria flight deals.
Search Deals
Provider most trusted by Cheapflights users for Knoxville McGhee Tyson-Greater Peoria flights.
Search Deals
From Knoxville McGhee Tyson to Greater Peoria
Search Deals
Highest demand for flights based on searches. 27% potential increase in price ($149 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 8% potential price decrease ($33 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
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Cheapflights Fare Finder

 
Customize your flight search to find flights from Knoxville to Peoria 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 December 4, 2025.
Use the filters below to find and compare flights from Knoxville to Peoria that are best for you.

Fly from

Knoxville

Fly to

Peoria

Route

Depart

Return

Price

KnoxvillePeoria

TYS - PIA

TYSPIA

Knoxville McGhee Tyson

Wed 1/28

11:10 am-2:23 pm

1 stop4h 13m

Greater Peoria

Sat 1/31

6:30 am-1:24 pm

1 stop5h 54m

$229

KnoxvillePeoria

TYS - PIA

TYSPIA

Knoxville McGhee Tyson

Wed 1/28

12:17 pm-10:21 pm

2 stops11h 04m

Greater Peoria

Sat 1/31

5:16 pm-9:54 pm

1 stop3h 38m

$234

KnoxvillePeoria

TYS - PIA

TYSPIA

Knoxville McGhee Tyson

Thu 12/11

6:30 am-2:18 pm

2 stops32h 48m

Greater Peoria

Sun 12/14

6:40 pm-9:39 pm

1 stop25h 59m

$273

KnoxvillePeoria

TYS - PIA

TYSPIA

Knoxville McGhee Tyson

Sat 1/31

12:15 pm-4:59 pm

1 stop5h 44m

Greater Peoria

Wed 2/4

3:55 pm-10:47 pm

1 stop5h 52m

$289

KnoxvillePeoria

TYS - PIA

TYSPIA

Knoxville McGhee Tyson

Sat 1/31

11:07 am-2:23 pm

1 stop4h 16m

Greater Peoria

Wed 2/4

1:24 pm-8:52 pm

1 stop6h 28m

$289

KnoxvillePeoria

TYS - PIA

TYSPIA

Knoxville McGhee Tyson

Thu 12/11

8:13 pm-12:07 am

1 stop4h 54m

Greater Peoria

Sun 12/14

6:32 am-3:32 pm

1 stop8h 00m

$299

KnoxvillePeoria

TYS - PIA

TYSPIA

Knoxville McGhee Tyson

Thu 12/18

5:52 pm-7:22 pm

1 stop26h 30m

Greater Peoria

Mon 12/22

8:12 pm-9:44 pm

1 stop24h 32m

$344

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/3

Compare providers for flights from Knoxville to Peoria

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Knoxville to Peoria in December.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Knoxville-Peoria, Illinois flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Knoxville-Peoria, Illinois flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Knoxville-Peoria, Illinois flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Knoxville-Peoria, Illinois flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Knoxville-Peoria, Illinois flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Knoxville to Peoria

Have a flexible travel schedule? Discover the best time to fly to Peoria from Knoxville with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

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

What is the cheapest month to book a flight from Knoxville to Peoria, Illinois?

Currently, January is the cheapest month in which you can book a flight from Knoxville to Peoria, Illinois (average of $227). Flying from Knoxville to Peoria, Illinois in April is currently the most expensive (average of $394). 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.

How much does it cost to fly round-trip from Knoxville to Peoria, Illinois?

Reviews of airlines servicing Peoria

Get insights into the airlines that provide service to Peoria. 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 Peoria. Reviews last updated December 4, 2025.
Read through reviews of airlines operating flights from Knoxville to Peoria, such as United Airlines and American Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
9,066 reviews

Food

6.6

Comfort

7.3

Entertainment

7.1

Overall

7.4

Boarding

7.7

Crew

8.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Oct 2025

YUL - ORD

Crew and customer service are 5 stars. I had a lot of luggage for a very long trip and they were nothing but helpful and found solutions to every problem. It was my first time flying with United, and they really are the friendly skies. Leg room however, on 2/3 flights was terrible. Same for entertainment: There was only a seat-mounted screen on 1/3 flights. It would have been nice to have on the longest leg of the journey.
United Airlines
7.4
Good
9,066 reviews
United Airlines
7.4
Good
9,066 reviews

Food

6.6

Comfort

7.3

Entertainment

7.1

Overall

7.4

Boarding

7.7

Crew

8.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Oct 2025

YUL - ORD

Crew and customer service are 5 stars. I had a lot of luggage for a very long trip and they were nothing but helpful and found solutions to every problem. It was my first time flying with United, and they really are the friendly skies. Leg room however, on 2/3 flights was terrible. Same for entertainment: There was only a seat-mounted screen on 1/3 flights. It would have been nice to have on the longest leg of the journey.
American Airlines
7.2
Good
11,047 reviews
United Airlines
7.4
Good
9,066 reviews

Food

6.6

Comfort

7.3

Entertainment

7.1

Overall

7.4

Boarding

7.7

Crew

8.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Oct 2025

YUL - ORD

Crew and customer service are 5 stars. I had a lot of luggage for a very long trip and they were nothing but helpful and found solutions to every problem. It was my first time flying with United, and they really are the friendly skies. Leg room however, on 2/3 flights was terrible. Same for entertainment: There was only a seat-mounted screen on 1/3 flights. It would have been nice to have on the longest leg of the journey.

Related info for your journey

Find useful and relevant information for your journey from Knoxville to Peoria. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Knoxville to Peoria, Illinois?

    For as low as $229, United Airlines can have you in Peoria, Illinois from Knoxville in 4h 13m. Airlines will cover a distance of 456 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the cheapest airlines flying from Knoxville to Peoria, Illinois round-trip?

    Cheapflights users have booked flights from Knoxville to Peoria, Illinois round-trip from $228. Another airline that can offer you cheap pricing is United Airlines. American Airlines is 42% cheaper than the average price of flights available within the next 90 days to this destination.

  • Can I find deals for flights from Knoxville to Peoria that include hotel bookings?

    Yes. In addition to deals on Knoxville to Peoria flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Knoxville to Peoria?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Knoxville to Peoria.

  • Can I find deals for business class flights from Knoxville to Peoria?

    Yes. Cheapflights offers flight deals from Knoxville to Peoria by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Knoxville to Peoria, Illinois?

    Currently, January is the cheapest month in which you can book a flight from Knoxville to Peoria, Illinois (average of $227). Flying from Knoxville to Peoria, Illinois in April is currently the most expensive (average of $394). 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.

See more FAQs

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Top 2 airlines flying from Knoxville to Peoria

Discover the top 2 airlines that operate flights from Knoxville to Peoria. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated December 4, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$228Average$373FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$228Average$288FlexibilityNo cancel feeOn-time71%

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