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Peoria

$168+ Cheap flights from Knoxville to Peoria, IL (TYS - PIA)

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 8/23. Fares are subject to change and may not be available on all flights or dates of travel.
TYS — PIA
Apr 10 — Apr 171
Fri 4/10
Fri 4/17
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 March 11, 2026.

This United Airlines deal was found by Cheapflights users on 3/9. 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.
Mon 8/36:30 am
TYS
-
PIA
1 stop4h 40m
United Airlines
Mon 8/105:33 pm
PIA
-
TYS
1 stop5h 57m
United Airlines
Deal found 3/9$289
This American Airlines deal was found by Cheapflights users on 3/10. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/285:00 am
TYS
-
PIA
2 stops8h 18m
American Airlines
Fri 4/35:22 pm
PIA
-
TYS
1 stop5h 29m
American Airlines
Deal found 3/10$324
This United Airlines deal was found by Cheapflights users on 3/9. 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.
Sun 8/28:20 am
TYS
-
PIA
1 stop5h 26m
United Airlines
Mon 8/101:21 pm
PIA
-
TYS
1 stop6h 35m
United Airlines
Deal found 3/9$349
This United Airlines deal was found by Cheapflights users on 3/8. 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 10/247:00 am
TYS
-
PIA
1 stop6h 46m
United Airlines
Wed 10/287:00 am
PIA
-
TYS
1 stop5h 18m
United Airlines
Deal found 3/8$416
This Kiwi.com deal was found by Cheapflights users on 3/9. 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.
Tue 3/2412:02 pm
TYS
-
PIA
1 stop22h 07m
Allegiant Air
Sat 3/285:41 pm
PIA
-
TYS
1 stop28h 18m
Allegiant Air
Deal found 3/9$432
This American Airlines deal was found by Cheapflights users on 3/9. 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.
Tue 3/244:29 pm
TYS
-
PIA
1 stop7h 44m
American Airlines
Sat 3/2812:48 pm
PIA
-
TYS
2 stops10h 02m
American Airlines
Deal found 3/9$467
This Kiwi.com deal was found by Cheapflights users on 3/10. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/157:00 pm
TYS
-
PIA
1 stop20h 23m
Allegiant Air
Thu 6/189:31 am
PIA
-
TYS
1 stop11h 45m
Allegiant Air
Deal found 3/10$477
This American Airlines deal was found by Cheapflights users on 3/9. 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.
Tue 3/106:31 pm
TYS
-
PIA
1 stop5h 42m
American Airlines
Mon 3/165:22 pm
PIA
-
TYS
1 stop5h 29m
American Airlines
Deal found 3/9$499

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 March 11, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$289
(United Airlines)

One-way from

$168
(Kiwi.com)
Provider with most accurate pricing for Knoxville McGhee Tyson-Greater Peoria flight deals.
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Provider most trusted by Cheapflights users for Knoxville McGhee Tyson-Greater Peoria flights.
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From Knoxville McGhee Tyson to Greater Peoria
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One-way flight from Knoxville McGhee Tyson to Greater Peoria
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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 March 11, 2026.
Use the filters below to find and compare flights from Knoxville to Peoria that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

KnoxvillePeoria

TYS - PIA

TYSPIA

Knoxville McGhee Tyson

Mon 8/3

6:30 am-10:10 am

1 stop4h 40m

Greater Peoria

Mon 8/10

5:33 pm-12:30 am

1 stop5h 57m

$289

KnoxvillePeoria

TYS - PIA

TYSPIA

Knoxville McGhee Tyson

Sun 8/2

8:20 am-12:46 pm

1 stop5h 26m

Greater Peoria

Mon 8/10

1:21 pm-8:56 pm

1 stop6h 35m

$349

KnoxvillePeoria

TYS - PIA

TYSPIA

Knoxville McGhee Tyson

Tue 3/24

12:02 pm-9:09 am

1 stop22h 07m

Greater Peoria

Sat 3/28

5:41 pm-10:59 pm

1 stop28h 18m

$432

KnoxvillePeoria

TYS - PIA

TYSPIA

Knoxville McGhee Tyson

Tue 3/24

4:29 pm-11:13 pm

1 stop7h 44m

Greater Peoria

Sat 3/28

12:48 pm-11:50 pm

2 stops10h 02m

$467

KnoxvillePeoria

TYS - PIA

TYSPIA

Knoxville McGhee Tyson

Mon 8/3

3:40 pm-11:59 pm

2 stops9h 19m

Greater Peoria

Mon 8/10

4:45 pm-11:53 pm

1 stop6h 08m

$539

KnoxvillePeoria

TYS - PIA

TYSPIA

Knoxville McGhee Tyson

Sun 8/2

2:41 pm-11:59 am

2 stops22h 18m

Greater Peoria

Mon 8/10

9:04 am-5:39 pm

1 stop7h 35m

$595
Quickest round-trip

KnoxvillePeoria

TYS - PIA

TYSPIA

Knoxville McGhee Tyson

Sun 3/22

7:40 am-12:47 pm

1 stop6h 07m

Greater Peoria

Thu 3/26

6:27 pm-11:50 pm

1 stop4h 23m

$645
Cheapest one-way

KnoxvillePeoria

TYS - PIA

TYSPIA

Knoxville McGhee Tyson

Sun 8/23

8:10 am-9:12 am

1 stop26h 02m

$168

KnoxvillePeoria

TYS - PIA

TYSPIA

Knoxville McGhee Tyson

Mon 8/3

7:04 pm-2:19 pm

1 stop20h 15m

$198

KnoxvillePeoria

TYS - PIA

TYSPIA

Knoxville McGhee Tyson

Sun 8/2

6:30 am-10:10 am

1 stop4h 40m

$258

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/6

Showing 1-10 of 12 resultsSorted by cheapest first
1
2

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 March.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice 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 FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Knoxville-Peoria, Illinois flight deals on Cheapflights vs. FlightHub >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 FlightHub the most. FlightHub 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.

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 March 11, 2026.
Read through reviews of airlines operating flights from Knoxville to Peoria, such as United Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
9,414 reviews

Entertainment

7.1

Comfort

7.3

Crew

8.1

Boarding

7.7

Food

6.6

Overall

7.4

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
United Airlines
7.4
Good
9,414 reviews
United Airlines
7.4
Good
9,414 reviews

Entertainment

7.1

Comfort

7.3

Crew

8.1

Boarding

7.7

Food

6.6

Overall

7.4

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family

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 $289, United Airlines can have you in Peoria, Illinois from Knoxville in 4h 40m. 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 is the cheapest airline to fly from Knoxville to Peoria, Illinois round-trip?

    Cheapflights users have booked flights from Knoxville to Peoria, Illinois round-trip from $228.

  • 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.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

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Top airline flying from Knoxville to Peoria

Discover the top airline 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 March 11, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$228Average$373FlexibilityNo cancel feeOn-time69%

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