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$219+ Cheap flights from Idaho to Knoxville (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 11/14. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — TYS
Oct 15 — Oct 221
Wed 10/15
Wed 10/22
1 adult, Economy
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Cheap flight deals from Idaho to Knoxville

Keep the following information in mind while searching for Idaho to Knoxville flight deals. Data was last updated September 15, 2025.

Round-trip from

$248
(Delta)

One-way from

$219
(Delta)

Popular in

March

Cheapest in

April

Average price

$326
From Idaho to Knoxville McGhee Tyson
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One-way flight from Idaho to Knoxville McGhee Tyson
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High demand for flights, 2% potential price rise
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Cheapest flight prices on average. 6% potential price decrease ($32 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find flight deals from Idaho to Knoxville

Cheapest flights from Idaho to Knoxville
Explore the most affordable flight options available from Idaho to Knoxville. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 15, 2025.

This Delta deal was found by Cheapflights users on 9/13. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/251:39 pmBOI - TYS
1 stop7h 28mDelta
Tue 11/45:44 amTYS - BOI
2 stops10h 18mDelta
Deal found 9/13$248
This Delta deal was found by Cheapflights users on 9/12. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/42:17 pmGEG - TYS
1 stop5h 38mDelta
Tue 11/115:25 amTYS - GEG
2 stops10h 40mDelta
Deal found 9/12$248
This American Airlines deal was found by Cheapflights users on 9/12. 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 11/45:25 amGEG - TYS
1 stop9h 03mAmerican Airlines
Tue 11/117:59 amTYS - GEG
1 stop7h 33mAmerican Airlines
Deal found 9/12$316
This United Airlines deal was found by Cheapflights users on 9/13. 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 9/305:00 amIDA - TYS
1 stop8h 06mUnited Airlines
Tue 10/78:40 amTYS - IDA
1 stop6h 53mUnited Airlines
Deal found 9/13$327
This Kiwi.com deal was found by Cheapflights users on 9/13. 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 10/3012:03 pmGEG - TYS
2 stops21h 15mMultiple Airlines
Sun 11/27:00 amTYS - GEG
1 stop7h 08mMultiple Airlines
Deal found 9/13$330
This Kiwi.com deal was found by Cheapflights users on 9/13. 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 10/2010:34 pmBOI - TYS
2 stops37h 55mMultiple Airlines
Thu 10/237:00 amTYS - BOI
1 stop6h 43mMultiple Airlines
Deal found 9/13$371
This Delta deal was found by Cheapflights users on 9/14. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/251:39 pmBOI - TYS
1 stop7h 28mDelta
Wed 10/296:40 amTYS - BOI
1 stop9h 22mDelta
Deal found 9/14$389
This American Airlines deal was found by Cheapflights users on 9/14. 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 11/112:33 pmGEG - TYS
1 stop8h 50mAmerican Airlines
Tue 11/117:59 amTYS - GEG
1 stop7h 33mAmerican Airlines
Deal found 9/14$389
This United Airlines deal was found by Cheapflights users on 9/14. 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 10/2512:35 pmBOI - TYS
1 stop8h 15mUnited Airlines
Wed 10/295:45 amTYS - BOI
2 stops9h 44mUnited Airlines
Deal found 9/14$394
This Delta deal was found by Cheapflights users on 9/14. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/51:39 pmBOI - TYS
1 stop7h 43mDelta
Sun 11/95:33 pmTYS - BOI
1 stop8h 36mDelta
Deal found 9/14$413
This American Airlines deal was found by Cheapflights users on 9/14. 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.
Mon 11/31:14 pmGEG - TYS
1 stop20h 29mAmerican Airlines
Tue 11/116:16 pmTYS - GEG
1 stop21h 16mAmerican Airlines
Deal found 9/14$413
This Trip.com deal was found by Cheapflights users on 9/14. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/211:33 pmBOI - TYS
1 stop8h 50mMultiple Airlines
Fri 10/246:00 amTYS - BOI
1 stop11h 19mMultiple Airlines
Deal found 9/14$416

Cheapflights Fare Finder

 
Customize your flight search to find flights from Idaho 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 September 15, 2025.
Use the filters below to find and compare flights from Idaho to Knoxville that are best for you.

Fly from

Idaho

Fly to

Knoxville

Route

Depart

Return

Price

BoiseKnoxville

BOI - TYS

BOITYS

Boise Air Term. Gowen Fld

Sat 10/25

1:39 pm-11:07 pm

1 stop7h 28m

Knoxville McGhee Tyson

Tue 11/4

5:44 am-2:02 pm

2 stops10h 18m

$248

SpokaneKnoxville

GEG - TYS

GEGTYS

Spokane

Tue 11/4

2:17 pm-10:55 pm

1 stop5h 38m

Knoxville McGhee Tyson

Tue 11/11

5:25 am-1:05 pm

2 stops10h 40m

$248

BoiseKnoxville

BOI - TYS

BOITYS

Boise Air Term. Gowen Fld

Sat 2/21

5:40 am-11:00 pm

2 stops15h 20m

Knoxville McGhee Tyson

Wed 2/25

6:45 am-2:09 pm

1 stop9h 24m

$291

SpokaneKnoxville

GEG - TYS

GEGTYS

Spokane

Tue 11/4

5:25 am-5:28 pm

1 stop9h 03m

Knoxville McGhee Tyson

Tue 11/11

7:59 am-12:32 pm

1 stop7h 33m

$316

Idaho FallsKnoxville

IDA - TYS

IDATYS

Idaho Falls Fanning Field

Tue 9/30

5:00 am-3:06 pm

1 stop8h 06m

Knoxville McGhee Tyson

Tue 10/7

8:40 am-1:33 pm

1 stop6h 53m

$327

SpokaneKnoxville

GEG - TYS

GEGTYS

Spokane

Fri 2/27

2:05 pm-11:00 pm

1 stop5h 55m

Knoxville McGhee Tyson

Tue 3/3

6:45 am-1:14 pm

1 stop9h 29m

$340

BoiseKnoxville

BOI - TYS

BOITYS

Boise Air Term. Gowen Fld

Sat 10/25

1:39 pm-11:07 pm

1 stop7h 28m

Knoxville McGhee Tyson

Wed 10/29

6:40 am-2:02 pm

1 stop9h 22m

$389

BoiseKnoxville

BOI - TYS

BOITYS

Boise Air Term. Gowen Fld

Sat 10/25

12:35 pm-10:50 pm

1 stop8h 15m

Knoxville McGhee Tyson

Wed 10/29

5:45 am-1:29 pm

2 stops9h 44m

$394

SpokaneKnoxville

GEG - TYS

GEGTYS

Spokane

Sat 11/1

12:51 pm-11:07 pm

1 stop7h 16m

Knoxville McGhee Tyson

Tue 11/11

5:25 am-2:54 pm

2 stops12h 29m

$394

SpokaneKnoxville

GEG - TYS

GEGTYS

Spokane

Mon 11/3

1:14 pm-12:43 pm

1 stop20h 29m

Knoxville McGhee Tyson

Tue 11/11

6:16 pm-12:32 pm

1 stop21h 16m

$413

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/14

Showing 1-10 of 41 results
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Best time to book a flight from Idaho to Knoxville

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

What is the cheapest month to book a flight from Idaho to Knoxville?

Currently, January is the cheapest month in which you can book a flight from Idaho to Knoxville (average of $294). Flying from Idaho 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.

What is the cheapest time of day to fly from ID to TYS?

Find hourly flight availability from Idaho to Knoxville. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 15, 2025.

When flying from Idaho to Knoxville, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Related info for your journey

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

  • What airport do you fly into for flights to Knoxville from Idaho?

    For a flight from Idaho to Knoxville, you will be flying into McGhee Tyson. Knoxville McGhee Tyson (TYS) is just 11.3 mi from the center of the city.

  • How long is the flight from Idaho to Knoxville?

    There are many flights that can get you from Idaho to Knoxville in 7h 28m. Fly via Delta, American Airlines, or United Airlines to get the fastest option. Idaho and Knoxville are separated by a distance of 1782 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 to fly from Idaho to Knoxville one-way?

    For one-way options, check prices for Delta. According to our data, you can fly for as low as $219. Users have also found prices from $249 and $299 on American Airlines and United Airlines, respectively.

  • What are the most popular routes from Idaho to Knoxville?

    While some choose either Boise Air Term. Gowen Fld - Knoxville McGhee Tyson or Idaho Falls Fanning Field - Knoxville McGhee Tyson, Spokane - Knoxville McGhee Tyson is the most popular route from Idaho to Knoxville.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Idaho 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 Idaho to Knoxville?

    Currently, January is the cheapest month in which you can book a flight from Idaho to Knoxville (average of $294). Flying from Idaho 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
Cherokee
Corbin
Alcoa
Oak Ridge
Murphy

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Top 4 airlines flying from Idaho to Knoxville

Discover the top 4 airlines that operate flights from Idaho 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 September 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$258Average$441FlexibilityNo cancel feeOn-time71%
DeltaCheapest$269Average$481FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$318Average$552FlexibilityNo cancel feeOn-time69%
Alaska AirlinesCheapest$379Average$625FlexibilityNo cancel feeOn-time75%

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