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$172+ Cheap flights from Peoria, IL to Knoxville (PIA - 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 8/14. Fares are subject to change and may not be available on all flights or dates of travel.
PIA — TYS
Aug 2 — Aug 91
Sat 8/2
Sat 8/9
1 adult, Economy
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Cheap flight deals from Peoria to Knoxville

Discover tips and strategies to find the most affordable flight options for your journey from Peoria (PIA) 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 July 28, 2025.

Round-trip from

$229
(American Airlines)

One-way from

$172
(Mytrip)

Popular in

August

Cheapest in

July

Average price

$276
From Greater Peoria to Knoxville McGhee Tyson
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One-way flight from Greater Peoria to Knoxville McGhee Tyson
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Highest demand for flights based on searches. 4% potential increase in price ($14 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($11 potential savings vs. average RT price).
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Average for round-trip flights in July 2025
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Find flight deals from Peoria to Knoxville

Cheapest flights from Peoria to Knoxville
Explore the most affordable flight options available from Peoria to Knoxville. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 28, 2025.

This American Airlines deal was found by Cheapflights users on 7/26. 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.
Fri 9/53:34 pmPIA - TYS
1 stop6h 29mAmerican Airlines
Mon 9/86:00 amTYS - PIA
1 stop5h 54mAmerican Airlines
Deal found 7/26$229
This United Airlines deal was found by Cheapflights users on 7/27. 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.
Tue 8/53:39 pmPIA - TYS
1 stop5h 56mUnited Airlines
Wed 8/207:00 amTYS - PIA
1 stop4h 13mUnited Airlines
Deal found 7/27$309
This Mytrip deal was found by Cheapflights users on 7/26. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/1112:45 pmPIA - TYS
2 stops20h 17mMultiple Airlines
Fri 8/1510:37 amTYS - PIA
1 stop8h 03mMultiple Airlines
Deal found 7/26$444
This Mytrip deal was found by Cheapflights users on 7/25. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/279:07 amPIA - TYS
1 stop12h 49mAllegiant Air
Thu 7/318:31 amTYS - PIA
1 stop5h 55mAllegiant Air
Deal found 7/25$708

Cheapflights Fare Finder

 
Customize your flight search to find flights from Peoria 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 July 28, 2025.
Use the filters below to find and compare flights from Peoria to Knoxville that are best for you.

Fly from

Peoria

Fly to

Knoxville

Route

Depart

Return

Price

PeoriaKnoxville

PIA - TYS

PIATYS

Greater Peoria

Fri 9/5

3:34 pm-11:03 pm

1 stop6h 29m

Knoxville McGhee Tyson

Mon 9/8

6:00 am-10:54 am

1 stop5h 54m

$229

PeoriaKnoxville

PIA - TYS

PIATYS

Greater Peoria

Mon 8/11

3:39 pm-10:35 pm

1 stop5h 56m

Knoxville McGhee Tyson

Fri 8/15

5:46 pm-10:19 am

1 stop17h 33m

$418

PeoriaKnoxville

PIA - TYS

PIATYS

Greater Peoria

Mon 8/11

12:45 pm-10:02 am

2 stops20h 17m

Knoxville McGhee Tyson

Fri 8/15

10:37 am-5:40 pm

1 stop8h 03m

$444

PeoriaKnoxville

PIA - TYS

PIATYS

Greater Peoria

Thu 8/14

3:44 pm-9:10 pm

2 stops28h 26m

$172

PeoriaKnoxville

PIA - TYS

PIATYS

Greater Peoria

Thu 8/14

5:25 pm-10:35 pm

1 stop4h 10m

$280

PeoriaKnoxville

PIA - TYS

PIATYS

Greater Peoria

Fri 8/15

10:07 am-6:54 pm

2 stops7h 47m

$285

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/28

Best time to book a flight from Peoria to Knoxville

Have a flexible travel schedule? Discover the best time to fly to Knoxville from Peoria 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 Peoria to Knoxville

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

Currently, January is the cheapest month in which you can book a flight from Peoria, Illinois to Knoxville (average of $295). Flying from Peoria, Illinois 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.

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

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 July 28, 2025.
See what other customers who have flown with United Airlines, American Airlines, and Allegiant Air from Peoria to Knoxville have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
8,892 reviews

Entertainment

7.1

Crew

8.1

Overall

7.4

Food

6.6

Comfort

7.3

Boarding

7.7

Reviews

1 / 20
2.0
Mediocre

Deb,Jan 2025

MKE - ORD

It was terrible! So much to say, but in a nutshell we used vouchers from United because our last trip with them was awful with many mishaps and errors made. Unfortunately, this trip was even worse!
United Airlines
7.4
Good
8,892 reviews
United Airlines
7.4
Good
8,892 reviews

Entertainment

7.1

Crew

8.1

Overall

7.4

Food

6.6

Comfort

7.3

Boarding

7.7

Reviews

1 / 20
2.0
Mediocre

Deb,Jan 2025

MKE - ORD

It was terrible! So much to say, but in a nutshell we used vouchers from United because our last trip with them was awful with many mishaps and errors made. Unfortunately, this trip was even worse!
American Airlines
7.2
Good
10,000 reviews
United Airlines
7.4
Good
8,892 reviews

Entertainment

7.1

Crew

8.1

Overall

7.4

Food

6.6

Comfort

7.3

Boarding

7.7

Reviews

1 / 20
2.0
Mediocre

Deb,Jan 2025

MKE - ORD

It was terrible! So much to say, but in a nutshell we used vouchers from United because our last trip with them was awful with many mishaps and errors made. Unfortunately, this trip was even worse!
Allegiant Air
7.2
Good
702 reviews
United Airlines
7.4
Good
8,892 reviews

Entertainment

7.1

Crew

8.1

Overall

7.4

Food

6.6

Comfort

7.3

Boarding

7.7

Reviews

1 / 20
2.0
Mediocre

Deb,Jan 2025

MKE - ORD

It was terrible! So much to say, but in a nutshell we used vouchers from United because our last trip with them was awful with many mishaps and errors made. Unfortunately, this trip was even worse!

Related info for your journey

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

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

    Our cheapest airline available from Peoria, Illinois to Knoxville is American Airlines. Our recent data shows that you can find tickets from as low as $229 on this airline. An additional option worth looking into is United Airlines, starting at $418. American Airlines is priced at 31% lower than the current average price of a flight leaving 3 months from now.

  • What are the cheapest airlines to fly from Peoria, Illinois to Knoxville one-way?

    $172 is the cheapest one-way deal found within the past few days, from Allegiant Air. You may also be able to find cheap deals on United Airlines and American Airlines, with prices starting from $280 and $285, respectively.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Peoria to Knoxville 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 Peoria, Illinois to Knoxville?

    Currently, January is the cheapest month in which you can book a flight from Peoria, Illinois to Knoxville (average of $295). Flying from Peoria, Illinois 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.

See more FAQs

Traveling to a place near Knoxville?

Book flights to Knoxville if you plan to visit one of these locations
Morristown
Corbin
Cherokee
Alcoa
Oak Ridge
Murphy

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Top 2 airlines flying from Peoria to Knoxville

Discover the top 2 airlines that operate flights from Peoria to Knoxville. 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 July 28, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$228Average$323FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$228Average$363FlexibilityNo cancel feeOn-time71%

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