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$239+ Cheap flights from Knoxville (TYS) to Idaho

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 4/2. Fares are subject to change and may not be available on all flights or dates of travel.
TYS — BOI
Feb 25 — Mar 41
Tue 2/25
Tue 3/4
1 adult, Economy
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Cheap 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 20, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$239
(American Airlines)

Popular in

December

Cheapest in

January

Average price

$597
Provider with most accurate pricing for Knoxville McGhee Tyson-Boise Air Term. Gowen Fld flight deals.
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Provider most trusted by Cheapflights users for Knoxville McGhee Tyson-Boise Air Term. Gowen Fld flights.
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From Knoxville McGhee Tyson to Idaho
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Highest demand for flights based on searches. 14% potential increase in price ($95 potential increase over avg. RT price).
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Cheapest flight prices on average. 5% potential price decrease ($26 potential savings vs. average RT price).
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Average for round-trip flights in February 2025
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Find 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 20, 2025.

This American Airlines deal was found by Cheapflights users on 2/20. 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.
Wed 4/24:09 pmTYS - GEG
2 stops9h 55mAmerican Airlines
Wed 4/236:27 amGEG - TYS
2 stops9h 52mAmerican Airlines
Deal found 2/20$239
This Delta deal was found by Cheapflights users on 2/19. 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 4/25:45 amTYS - GEG
1 stop9h 10mDelta
Wed 4/2312:45 pmGEG - TYS
1 stop8h 03mDelta
Deal found 2/19$284
This Delta deal was found by Cheapflights users on 2/19. 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 8/216:05 pmTYS - BOI
1 stop7h 24mDelta
Tue 8/261:43 pmBOI - TYS
1 stop8h 04mDelta
Deal found 2/19$289
This American Airlines deal was found by Cheapflights users on 2/19. 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.
Thu 3/64:20 pmTYS - BOI
1 stop7h 29mAmerican Airlines
Mon 3/101:36 pmBOI - TYS
1 stop8h 22mAmerican Airlines
Deal found 2/19$339
This Mytrip deal was found by Cheapflights users on 2/20. 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.
Fri 3/76:00 amTYS - BOI
3 stops32h 32mMultiple Airlines
Tue 3/111:31 pmBOI - TYS
1 stop28h 31mMultiple Airlines
Deal found 2/20$345
This American Airlines deal was found by Cheapflights users on 2/19. 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.
Thu 3/66:58 amTYS - JAC
2 stops9h 55mAmerican Airlines
Mon 3/103:48 pmJAC - TYS
1 stop6h 10mAmerican Airlines
Deal found 2/19$474
This United Airlines deal was found by Cheapflights users on 2/20. 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 3/297:05 amTYS - JAC
1 stop7h 00mUnited Airlines
Sat 4/57:00 amJAC - TYS
2 stops7h 43mUnited Airlines
Deal found 2/20$485
This United deal was found by Cheapflights users on 2/19. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/1510:50 amTYS - GEG
2 stops9h 31mUnited Airlines
Tue 7/226:25 pmGEG - TYS
2 stops13h 02mUnited Airlines
Deal found 2/19$495
This Alaska Airlines deal was found by Cheapflights users on 2/19. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/165:55 amTYS - BOI
1 stop8h 39mAlaska Airlines
Thu 10/238:30 pmBOI - TYS
2 stops11h 47mAlaska Airlines
Deal found 2/19$524
This Delta deal was found by Cheapflights users on 2/20. 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.
Fri 8/112:00 pmTYS - JAC
2 stops8h 57mDelta
Fri 8/88:05 amJAC - TYS
1 stop8h 12mDelta
Deal found 2/20$656
This United Airlines deal was found by Cheapflights users on 2/18. 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 3/154:00 pmTYS - BOI
1 stop23h 28mUnited Airlines
Wed 3/1912:10 pmBOI - TYS
1 stop8h 35mUnited Airlines
Deal found 2/18$667
This Alaska Airlines deal was found by Cheapflights users on 2/19. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/275:28 amTYS - JAC
2 stops15h 12mAlaska Airlines
Thu 1/17:20 pmJAC - TYS
3 stops21h 29mAlaska Airlines
Deal found 2/19$2,589

Find flights from Knoxville to Idaho within your budget

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 20, 2025.

Fly from

Knoxville

Fly to

Idaho

Route

Depart

Return

Price

KnoxvilleSpokane

TYS - GEG

TYSGEG

Knoxville McGhee Tyson

Wed 4/2

4:09 pm-11:04 pm

2 stops9h 55m

Spokane

Wed 4/23

6:27 am-7:19 pm

2 stops9h 52m

$239

KnoxvilleSpokane

TYS - GEG

TYSGEG

Knoxville McGhee Tyson

Wed 4/2

5:45 am-11:55 am

1 stop9h 10m

Spokane

Wed 4/23

12:45 pm-11:48 pm

1 stop8h 03m

$284

KnoxvilleBoise

TYS - BOI

TYSBOI

Knoxville McGhee Tyson

Thu 3/6

4:20 pm-9:49 pm

1 stop7h 29m

Boise Air Term. Gowen Fld

Mon 3/10

1:36 pm-11:58 pm

1 stop8h 22m

$339

KnoxvilleBoise

TYS - BOI

TYSBOI

Knoxville McGhee Tyson

Fri 3/7

6:00 am-12:32 pm

3 stops32h 32m

Boise Air Term. Gowen Fld

Tue 3/11

1:31 pm-8:02 pm

1 stop28h 31m

$345

KnoxvilleJackson

TYS - JAC

TYSJAC

Knoxville McGhee Tyson

Sat 3/29

7:05 am-12:05 pm

1 stop7h 00m

Jackson Hole

Sat 4/5

7:00 am-4:43 pm

2 stops7h 43m

$485

KnoxvilleSpokane

TYS - GEG

TYSGEG

Knoxville McGhee Tyson

Tue 7/15

10:50 am-5:21 pm

2 stops9h 31m

Spokane

Tue 7/22

6:25 pm-10:27 am

2 stops13h 02m

$495

KnoxvilleJackson

TYS - JAC

TYSJAC

Knoxville McGhee Tyson

Tue 7/8

2:32 pm-8:52 pm

1 stop8h 20m

Jackson Hole

Tue 7/15

4:15 pm-11:49 pm

1 stop5h 34m

$596

KnoxvilleJackson

TYS - JAC

TYSJAC

Knoxville McGhee Tyson

Thu 7/10

4:00 pm-8:29 pm

1 stop6h 29m

Jackson Hole

Wed 7/16

5:30 pm-4:40 pm

2 stops21h 10m

$625

KnoxvilleBoise

TYS - BOI

TYSBOI

Knoxville McGhee Tyson

Sat 3/15

4:00 pm-1:28 pm

1 stop23h 28m

Boise Air Term. Gowen Fld

Wed 3/19

12:10 pm-10:45 pm

1 stop8h 35m

$667

KnoxvilleSpokane

TYS - GEG

TYSGEG

Knoxville McGhee Tyson

Fri 7/18

4:00 pm-9:56 pm

1 stop8h 56m

$310

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/19

Showing 1-10 of 15 results
1
2

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.

Travel insights for flights from Knoxville to Idaho

Get recent, data-driven insights about flights from Knoxville to Idaho including ideal travel times, pricing trends, and more.

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

Currently, October is the cheapest month in which you can book a flight from Knoxville to Idaho (average of $314). Flying from Knoxville to Idaho in June is currently the most expensive (average of $436). 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 TYS to ID?

Find hourly flight availability from Knoxville to Idaho. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated February 20, 2025.

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

Rainfall in Idaho by month

Plan your trip to Idaho by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Idaho ranges from 0.2 - 1.6 inches per month. December is typically the wettest month, when rainfall can reach 1.6 in. August is typically the driest time to visit Idaho when rainfall is around 0.2 in.

Temperature in Idaho by month

Plan your trip to Idaho by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Idaho, 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 75.2 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 30.2 F).

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 20, 2025.
Peruse reviews from past customers who have flown with Delta, United Airlines and American Airlines from Knoxville to Idaho to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
8,219 reviews

Entertainment

7.9

Boarding

8.2

Overall

8.0

Comfort

8.0

Food

7.3

Crew

8.5

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Delta
8.0
Very good
8,219 reviews
Delta
8.0
Very good
8,219 reviews

Entertainment

7.9

Boarding

8.2

Overall

8.0

Comfort

8.0

Food

7.3

Crew

8.5

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

United Airlines
7.4
Good
8,765 reviews
Delta
8.0
Very good
8,219 reviews

Entertainment

7.9

Boarding

8.2

Overall

8.0

Comfort

8.0

Food

7.3

Crew

8.5

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
8,219 reviews

Entertainment

7.9

Boarding

8.2

Overall

8.0

Comfort

8.0

Food

7.3

Crew

8.5

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

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.

  • What are the cheapest airlines to fly from Knoxville to Idaho one-way?

    The cheapest airline one-way is Delta, with whom users have recently found tickets for as low as $310. However, be on the lookout for offers from American Airlines and United Airlines, as they are both options that can get you from Knoxville to Idaho for a low price.

  • 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 - Spokane or Knoxville McGhee Tyson - Boise Air Term. Gowen Fld 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, October is the cheapest month in which you can book a flight from Knoxville to Idaho (average of $314). Flying from Knoxville to Idaho in June is currently the most expensive (average of $436). 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 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$288Average$450FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$298Average$569FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$303Average$568FlexibilityNo cancel feeOn-time69%
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