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$270+ 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 5/9. Fares are subject to change and may not be available on all flights or dates of travel.
TYS — BOI
Apr 22 — Apr 291
Tue 4/22
Tue 4/29
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 April 17, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$270
(Delta)

One-way from

$270
(American Airlines)

Popular in

December

Cheapest in

April

Average price

$236
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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One-way flight from Knoxville McGhee Tyson to Idaho
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Highest demand for flights based on searches. 20% potential increase in price ($128 potential increase over avg. RT price).
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Cheapest flight prices on average. 5% potential price decrease ($29 potential savings vs. average RT price).
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Average for round-trip flights in April 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 April 17, 2025.

This Delta deal was found by Cheapflights users on 4/16. 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 8/126:05 pmTYS - GEG
1 stop7h 58mDelta
Sun 8/1710:59 pmGEG - TYS
1 stop7h 14mDelta
Deal found 4/16$270
This Delta deal was found by Cheapflights users on 4/17. 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 8/126:05 pmTYS - BOI
1 stop7h 24mDelta
Mon 8/1811:30 pmBOI - TYS
1 stop7h 43mDelta
Deal found 4/17$270
This American Airlines deal was found by Cheapflights users on 4/17. 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 8/217:57 amTYS - BOI
1 stop6h 30mAmerican Airlines
Tue 8/261:17 pmBOI - TYS
1 stop6h 17mAmerican Airlines
Deal found 4/17$295
This American Airlines deal was found by Cheapflights users on 4/17. 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 5/23:09 pmTYS - GEG
1 stop9h 29mAmerican Airlines
Tue 5/61:22 pmGEG - TYS
1 stop7h 36mAmerican Airlines
Deal found 4/17$339
This American Airlines deal was found by Cheapflights users on 4/17. 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 5/211:03 amTYS - IDA
2 stops13h 07mAmerican Airlines
Mon 5/57:00 amIDA - TYS
1 stop8h 31mAmerican Airlines
Deal found 4/17$344
This Alaska Airlines deal was found by Cheapflights users on 4/17. 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.
Mon 5/127:50 pmTYS - GEG
2 stops19h 41mAlaska Airlines
Sat 5/1712:27 pmGEG - TYS
2 stops20h 14mAlaska Airlines
Deal found 4/17$370
This Delta deal was found by Cheapflights users on 4/16. 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 6/124:11 pmTYS - JAC
1 stop6h 05mDelta
Tue 6/246:53 pmJAC - TYS
2 stops13h 26mDelta
Deal found 4/16$379
This United Airlines deal was found by Cheapflights users on 4/17. 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 8/129:55 amTYS - BOI
2 stops13h 39mUnited Airlines
Mon 8/187:15 pmBOI - TYS
2 stops13h 00mUnited Airlines
Deal found 4/17$380
This American Airlines deal was found by Cheapflights users on 4/16. 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 8/232:29 pmTYS - JAC
1 stop8h 23mAmerican Airlines
Thu 8/287:00 amJAC - TYS
1 stop8h 34mAmerican Airlines
Deal found 4/16$394
This United Airlines deal was found by Cheapflights users on 4/15. 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.
Thu 5/14:14 pmTYS - JAC
1 stop7h 03mUnited Airlines
Mon 5/510:41 amJAC - TYS
2 stops10h 04mUnited Airlines
Deal found 4/15$404
This United Airlines deal was found by Cheapflights users on 4/16. 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.
Mon 8/114:35 pmTYS - GEG
1 stop7h 28mUnited Airlines
Sat 8/167:00 amGEG - TYS
1 stop7h 05mUnited Airlines
Deal found 4/16$414
This Alaska Airlines deal was found by Cheapflights users on 4/16. 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.
Fri 9/191:54 pmTYS - BOI
2 stops12h 05mAlaska Airlines
Sun 9/215:44 pmBOI - TYS
2 stops14h 34mAlaska Airlines
Deal found 4/16$559

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 April 17, 2025.
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

KnoxvilleSpokane

TYS - GEG

TYSGEG

Knoxville McGhee Tyson

Tue 8/12

6:05 pm-11:03 pm

1 stop7h 58m

Spokane

Sun 8/17

10:59 pm-9:13 am

1 stop7h 14m

$270

KnoxvilleBoise

TYS - BOI

TYSBOI

Knoxville McGhee Tyson

Tue 8/12

6:05 pm-11:29 pm

1 stop7h 24m

Boise Air Term. Gowen Fld

Mon 8/18

11:30 pm-9:13 am

1 stop7h 43m

$270

KnoxvilleBoise

TYS - BOI

TYSBOI

Knoxville McGhee Tyson

Thu 8/21

7:57 am-12:27 pm

1 stop6h 30m

Boise Air Term. Gowen Fld

Tue 8/26

1:17 pm-9:34 pm

1 stop6h 17m

$295

KnoxvilleSpokane

TYS - GEG

TYSGEG

Knoxville McGhee Tyson

Fri 5/2

3:09 pm-9:38 pm

1 stop9h 29m

Spokane

Tue 5/6

1:22 pm-11:58 pm

1 stop7h 36m

$339

KnoxvilleIdaho Falls

TYS - IDA

TYSIDA

Knoxville McGhee Tyson

Fri 5/2

11:03 am-10:10 pm

2 stops13h 07m

Idaho Falls Fanning Field

Mon 5/5

7:00 am-5:31 pm

1 stop8h 31m

$344

KnoxvilleSpokane

TYS - GEG

TYSGEG

Knoxville McGhee Tyson

Mon 5/12

7:50 pm-12:31 pm

2 stops19h 41m

Spokane

Sat 5/17

12:27 pm-11:41 am

2 stops20h 14m

$370

KnoxvilleJackson

TYS - JAC

TYSJAC

Knoxville McGhee Tyson

Thu 6/12

4:11 pm-8:16 pm

1 stop6h 05m

Jackson Hole

Tue 6/24

6:53 pm-10:19 am

2 stops13h 26m

$379

KnoxvilleBoise

TYS - BOI

TYSBOI

Knoxville McGhee Tyson

Tue 8/12

9:55 am-9:34 pm

2 stops13h 39m

Boise Air Term. Gowen Fld

Mon 8/18

7:15 pm-10:15 am

2 stops13h 00m

$380

KnoxvilleJackson

TYS - JAC

TYSJAC

Knoxville McGhee Tyson

Thu 5/1

4:14 pm-9:17 pm

1 stop7h 03m

Jackson Hole

Mon 5/5

10:41 am-10:45 pm

2 stops10h 04m

$404

KnoxvilleSpokane

TYS - GEG

TYSGEG

Knoxville McGhee Tyson

Mon 8/11

4:35 pm-9:03 pm

1 stop7h 28m

Spokane

Sat 8/16

7:00 am-5:05 pm

1 stop7h 05m

$414

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/16

Showing 1-10 of 16 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.

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, 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 $419). 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 April 17, 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 April 17, 2025.
Peruse reviews from past customers who have flown with Alaska Airlines, Delta and United 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.
Alaska Airlines
8.0
Very good
9,887 reviews

Overall

8.0

Food

7.1

Boarding

8.1

Entertainment

7.1

Comfort

7.9

Crew

8.5

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
Alaska Airlines
8.0
Very good
9,887 reviews
Alaska Airlines
8.0
Very good
9,887 reviews

Overall

8.0

Food

7.1

Boarding

8.1

Entertainment

7.1

Comfort

7.9

Crew

8.5

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
Delta
8.0
Very good
7,916 reviews
Alaska Airlines
8.0
Very good
9,887 reviews

Overall

8.0

Food

7.1

Boarding

8.1

Entertainment

7.1

Comfort

7.9

Crew

8.5

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
United Airlines
7.4
Good
8,667 reviews
Alaska Airlines
8.0
Very good
9,887 reviews

Overall

8.0

Food

7.1

Boarding

8.1

Entertainment

7.1

Comfort

7.9

Crew

8.5

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
9,887 reviews

Overall

8.0

Food

7.1

Boarding

8.1

Entertainment

7.1

Comfort

7.9

Crew

8.5

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >

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 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 $419). 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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Alternative routes for Knoxville to Idaho

See prices for flight routes from nearby airports that may be better suited for you.
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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 April 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$172Average$530FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$240Average$525FlexibilityNo cancel feeOn-time69%
DeltaCheapest$288Average$405FlexibilityNo cancel feeOn-timeN/A

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