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$289+ Cheap flights from Peoria, IL to Knoxville (PIA - TYS)

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 7/26. Fares are subject to change and may not be available on all flights or dates of travel.
PIA — TYS
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
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 June 12, 2025.

Round-trip from

$289
(United Airlines)

Popular in

March

Cheapest in

September

Average price

$288
From Greater Peoria to Knoxville McGhee Tyson
Search Deals
Highest demand for flights based on searches. 13% potential increase in price ($49 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($10 potential savings vs. average RT price).
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Average for round-trip flights in June 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 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.
Sat 7/263:39 pmPIA - TYS
1 stop5h 56mUnited Airlines
Sat 8/27:00 amTYS - PIA
1 stop4h 19mUnited Airlines
Deal found 6/10$289
This Mytrip 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/105:33 pmPIA - TYS
1 stop18h 50mAllegiant Air
Mon 7/143:03 pmTYS - PIA
1 stop5h 22mAllegiant Air
Deal found 6/10$324
This American Airlines deal was found by Cheapflights users on 6/11. 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 6/1410:05 amPIA - TYS
2 stops8h 25mAmerican Airlines
Mon 6/166:25 pmTYS - PIA
1 stop5h 48mAmerican Airlines
Deal found 6/11$353
This Mytrip 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/252:27 pmPIA - TYS
1 stop27h 23mMultiple Airlines
Sun 6/293:24 pmTYS - PIA
2 stops24h 34mMultiple Airlines
Deal found 6/10$396

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 June 12, 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

Sat 7/26

3:39 pm-10:35 pm

1 stop5h 56m

Knoxville McGhee Tyson

Sat 8/2

7:00 am-10:19 am

1 stop4h 19m

$289

PeoriaKnoxville

PIA - TYS

PIATYS

Greater Peoria

Thu 7/10

5:33 pm-1:23 pm

1 stop18h 50m

Knoxville McGhee Tyson

Mon 7/14

3:03 pm-7:25 pm

1 stop5h 22m

$324

PeoriaKnoxville

PIA - TYS

PIATYS

Greater Peoria

Sat 7/26

4:11 pm-10:25 pm

1 stop5h 14m

Knoxville McGhee Tyson

Sat 8/2

5:58 pm-11:35 pm

2 stops6h 37m

$385

PeoriaKnoxville

PIA - TYS

PIATYS

Greater Peoria

Wed 6/25

2:27 pm-6:50 pm

1 stop27h 23m

Knoxville McGhee Tyson

Sun 6/29

3:24 pm-2:58 pm

2 stops24h 34m

$396

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/10

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 $296). 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.

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.
United Airlines
7.4
Good
8,790 reviews

Overall

7.4

Food

6.6

Boarding

7.7

Comfort

7.3

Entertainment

7.0

Crew

8.1

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
8,790 reviews
United Airlines
7.4
Good
8,790 reviews

Overall

7.4

Food

6.6

Boarding

7.7

Comfort

7.3

Entertainment

7.0

Crew

8.1

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
7.3
Good
725 reviews
United Airlines
7.4
Good
8,790 reviews

Overall

7.4

Food

6.6

Boarding

7.7

Comfort

7.3

Entertainment

7.0

Crew

8.1

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
8,790 reviews

Overall

7.4

Food

6.6

Boarding

7.7

Comfort

7.3

Entertainment

7.0

Crew

8.1

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 United Airlines. Our recent data shows that you can find tickets from as low as $289 on this airline. Additional options worth looking into are Allegiant Air and American Airlines, starting at $324 and $385 round-trip. United Airlines is priced at 11% lower than the current average price of a flight leaving 3 months from now.

  • 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 $296). 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 Peoria?

Book flights to Peoria if you plan to visit one of these locations
Morristown
Cherokee
Corbin
Maryville
Oak Ridge
Alcoa
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 June 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$198Average$303FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$228Average$333FlexibilityNo cancel feeOn-time69%

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