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Idaho

$219+ Cheap flights from Knoxville (TYS) to Idaho

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 3/22. Fares are subject to change and may not be available on all flights or dates of travel.
TYS — BOI
Mar 13 — Mar 201
Fri 3/13
Fri 3/20
1 adult, Economy
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Cheap flight deals from Knoxville to Idaho

Cheapest flights from Knoxville to Idaho
Explore the most affordable flight options available from Knoxville to Idaho. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 11, 2026.

This Delta deal was found by Cheapflights users on 2/10. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/86:35 am
TYS
-
BOI
1 stop9h 30m
Delta
Tue 4/143:23 pm
BOI
-
TYS
1 stop5h 36m
Delta
Deal found 2/10$359
This Delta deal was found by Cheapflights users on 2/10. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/75:24 pm
TYS
-
BOI
2 stops8h 35m
Delta
Tue 4/143:23 pm
BOI
-
TYS
1 stop5h 36m
Delta
Deal found 2/10$364
This United Airlines deal was found by Cheapflights users on 2/8. 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 3/287:00 am
TYS
-
JAC
1 stop6h 24m
United Airlines
Sat 4/47:00 am
JAC
-
TYS
1 stop6h 06m
United Airlines
Deal found 2/8$369
This Delta deal was found by Cheapflights users on 2/10. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/86:35 am
TYS
-
BOI
1 stop9h 30m
Delta
Mon 4/1311:35 pm
BOI
-
TYS
1 stop7h 49m
Delta
Deal found 2/10$372
This Delta deal was found by Cheapflights users on 2/9. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/126:41 am
TYS
-
BOI
1 stop8h 38m
Delta
Tue 5/1911:39 pm
BOI
-
TYS
2 stops12h 34m
Delta
Deal found 2/9$374
This Southwest deal was found by Cheapflights users on 2/9. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/72:55 pm
TYS
-
GEG
2 stops11h 00m
Southwest
Sat 4/1110:45 am
GEG
-
TYS
1 stop5h 50m
Southwest
Deal found 2/9$377
This Delta deal was found by Cheapflights users on 2/10. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/75:24 pm
TYS
-
BOI
2 stops8h 35m
Delta
Mon 4/1311:35 pm
BOI
-
TYS
1 stop7h 49m
Delta
Deal found 2/10$377
This American Airlines deal was found by Cheapflights users on 2/9. 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.
Sat 3/285:40 am
TYS
-
JAC
1 stop8h 58m
American Airlines
Sat 4/43:06 pm
JAC
-
TYS
1 stop6h 45m
American Airlines
Deal found 2/9$378
This Delta deal was found by Cheapflights users on 2/9. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/126:41 am
TYS
-
BOI
1 stop8h 38m
Delta
Mon 5/182:25 pm
BOI
-
TYS
1 stop6h 32m
Delta
Deal found 2/9$382
This Delta deal was found by Cheapflights users on 2/10. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/95:10 pm
TYS
-
BOI
1 stop7h 15m
Delta
Mon 4/133:23 pm
BOI
-
TYS
1 stop5h 36m
Delta
Deal found 2/10$385
This Delta deal was found by Cheapflights users on 2/9. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/93:00 pm
TYS
-
BOI
2 stops10h 40m
Delta
Tue 5/1911:39 pm
BOI
-
TYS
1 stop7h 48m
Delta
Deal found 2/9$387
This United Airlines deal was found by Cheapflights users on 2/8. 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.
Tue 2/248:45 am
TYS
-
JAC
1 stop8h 36m
United Airlines
Sat 2/287:00 am
JAC
-
TYS
2 stops11h 37m
United Airlines
Deal found 2/8$391

Find flight deals from Knoxville to Idaho

Keep the following information in mind while searching for Knoxville to Idaho flight deals. Data was last updated February 11, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$359
(Delta)

One-way from

$219
(American Airlines)

Popular in

December

Cheapest in

April

Average price

$520
Provider with most accurate pricing for Knoxville McGhee Tyson-Boise Air Term. Gowen Fld flight deals.
Search Deals
Provider most trusted by Cheapflights users for Knoxville McGhee Tyson-Boise Air Term. Gowen Fld flights.
Search Deals
From Knoxville McGhee Tyson to Idaho
Search Deals
One-way flight from Knoxville McGhee Tyson to Idaho
Search Deals
Highest demand for flights based on searches. 29% potential increase in price ($193 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 9% potential price decrease ($41 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Knoxville to Idaho 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 February 11, 2026.
Use the filters below to find and compare flights from Knoxville to Idaho that are best for you.

Fly from

Knoxville

Fly to

Idaho

Route

Depart

Return

Price

KnoxvilleJackson

TYS - JAC

TYSJAC

Knoxville McGhee Tyson

Sat 3/28

7:00 am-11:24 am

1 stop6h 24m

Jackson Hole

Sat 4/4

7:00 am-3:06 pm

1 stop6h 06m

$369

KnoxvilleBoise

TYS - BOI

TYSBOI

Knoxville McGhee Tyson

Thu 4/9

5:10 pm-10:25 pm

1 stop7h 15m

Boise Air Term. Gowen Fld

Tue 4/14

3:23 pm-10:59 pm

1 stop5h 36m

$372

KnoxvilleJackson

TYS - JAC

TYSJAC

Knoxville McGhee Tyson

Sat 3/28

5:40 am-12:38 pm

1 stop8h 58m

Jackson Hole

Sat 4/4

3:06 pm-11:51 pm

1 stop6h 45m

$378

KnoxvilleJackson

TYS - JAC

TYSJAC

Knoxville McGhee Tyson

Mon 3/23

7:40 am-12:18 pm

1 stop6h 38m

Jackson Hole

Fri 3/27

1:18 pm-9:24 pm

1 stop6h 06m

$378

KnoxvilleSpokane

TYS - GEG

TYSGEG

Knoxville McGhee Tyson

Tue 4/7

2:55 pm-9:35 pm

2 stops9h 40m

Spokane

Sat 4/11

5:50 am-7:35 pm

2 stops10h 45m

$382

KnoxvilleBoise

TYS - BOI

TYSBOI

Knoxville McGhee Tyson

Thu 4/9

5:10 pm-10:25 pm

1 stop7h 15m

Boise Air Term. Gowen Fld

Mon 4/13

3:23 pm-10:59 pm

1 stop5h 36m

$385

KnoxvilleJackson

TYS - JAC

TYSJAC

Knoxville McGhee Tyson

Tue 2/24

8:45 am-3:21 pm

1 stop8h 36m

Jackson Hole

Sat 2/28

7:00 am-8:37 pm

2 stops11h 37m

$391

KnoxvilleBoise

TYS - BOI

TYSBOI

Knoxville McGhee Tyson

Fri 4/10

5:10 pm-10:25 pm

1 stop7h 15m

Boise Air Term. Gowen Fld

Tue 4/14

3:23 pm-10:59 pm

1 stop5h 36m

$403

KnoxvilleIdaho Falls

TYS - IDA

TYSIDA

Knoxville McGhee Tyson

Wed 5/27

5:33 pm-10:11 pm

1 stop6h 38m

Idaho Falls Fanning Field

Wed 6/3

12:36 pm-10:04 pm

1 stop7h 28m

$413

KnoxvilleIdaho Falls

TYS - IDA

TYSIDA

Knoxville McGhee Tyson

Wed 5/27

6:30 am-3:39 pm

2 stops11h 09m

Idaho Falls Fanning Field

Wed 6/3

2:31 pm-10:20 pm

1 stop5h 49m

$415

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/9

Showing 1-10 of 46 results
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Best time to book a flight from Knoxville to Idaho

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

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

Currently, April is the cheapest month in which you can book a flight from Knoxville to Idaho (average of $156). Flying from Knoxville to Idaho in February is currently the most expensive (average of $421). 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.

Reviews of airlines servicing Idaho

Get insights into the airlines that provide service to Idaho. 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 Idaho. Reviews last updated February 11, 2026.
See what other customers who have flown with Delta, United Airlines, and American Airlines from Knoxville to Idaho have to say. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.9
Good
8,179 reviews

Boarding

8.1

Comfort

7.9

Food

7.2

Overall

7.9

Crew

8.5

Entertainment

7.8

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Delta
7.9
Good
8,179 reviews
Delta
7.9
Good
8,179 reviews

Boarding

8.1

Comfort

7.9

Food

7.2

Overall

7.9

Crew

8.5

Entertainment

7.8

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
United Airlines
7.4
Good
9,276 reviews
Delta
7.9
Good
8,179 reviews

Boarding

8.1

Comfort

7.9

Food

7.2

Overall

7.9

Crew

8.5

Entertainment

7.8

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
American Airlines
7.2
Good
11,267 reviews
Delta
7.9
Good
8,179 reviews

Boarding

8.1

Comfort

7.9

Food

7.2

Overall

7.9

Crew

8.5

Entertainment

7.8

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.

Related info for your journey

Find useful and relevant information for your journey from Knoxville to Idaho. 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 from for flights from Knoxville to Idaho?

    Knoxville McGhee Tyson (TYS), located 11.3 mi from the city center, is the airport you fly out of when you book flights from Knoxville to Idaho.

  • How long is the flight from Knoxville to Idaho?

    Departing from Knoxville to Idaho will take you 6h 24m. Airlines will cover a distance of 1511 mi. Both multi-stop and nonstop flights can be found to your destination and back.

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

    When deciding which route to take from Knoxville to Idaho consider Knoxville McGhee Tyson - Jackson Hole, Knoxville McGhee Tyson - Boise Air Term. Gowen Fld or Knoxville McGhee Tyson - Spokane as they are the most popular.

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

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

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

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

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

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

    Currently, April is the cheapest month in which you can book a flight from Knoxville to Idaho (average of $156). Flying from Knoxville to Idaho in February is currently the most expensive (average of $421). 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 3 airlines flying from Knoxville to Idaho

Discover the top 3 airlines that operate flights from Knoxville to Idaho. 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 February 11, 2026.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$156Average$472FlexibilityNo cancel feeOn-time71%
DeltaCheapest$239Average$374FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$411Average$568FlexibilityNo cancel feeOn-time69%

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