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$259+ 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 6/25. Fares are subject to change and may not be available on all flights or dates of travel.
TYS — BOI
may. 6 — may. 131
mar. 5/6
mar. 5/13
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 mayo 1, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$259
(Delta)

Popular in

December

Cheapest in

April

Average price

$424
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. 21% potential increase in price ($133 potential increase over avg. RT price).
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Cheapest flight prices on average. 6% potential price decrease ($30 potential savings vs. average RT price).
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Average for round-trip flights in May 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 mayo 1, 2025.

This Delta deal was found by Cheapflights users on 4/30. 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.
mié. 6/255:57 pmTYS - BOI
1 stop6h 32mDelta
mié. 7/21:46 pmBOI - TYS
1 stop8h 13mDelta
Deal found 4/30$259
This Delta deal was found by Cheapflights users on 4/30. 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.
mar. 7/225:57 pmTYS - GEG
1 stop7h 03mDelta
lun. 8/412:21 pmGEG - TYS
1 stop8h 38mDelta
Deal found 4/30$289
This United Airlines deal was found by Cheapflights users on 4/29. 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.
jue. 5/157:00 amTYS - IDA
2 stops10h 25mUnited Airlines
mar. 5/202:40 pmIDA - TYS
1 stop5h 44mUnited Airlines
Deal found 4/29$319
This Mytrip deal was found by Cheapflights users on 4/30. 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.
jue. 5/151:52 pmTYS - BOI
1 stop28h 03mMultiple Airlines
vie. 5/2312:16 pmBOI - TYS
2 stops18h 48mMultiple Airlines
Deal found 4/30$362
This United Airlines deal was found by Cheapflights users on 4/30. 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.
jue. 5/154:14 pmTYS - JAC
1 stop7h 03mUnited Airlines
lun. 5/197:00 amJAC - TYS
1 stop5h 59mUnited Airlines
Deal found 4/30$399
This United Airlines deal was found by Cheapflights users on 4/30. 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.
jue. 5/157:00 amTYS - BOI
2 stops11h 21mUnited Airlines
sáb. 5/242:35 pmBOI - TYS
1 stop5h 53mUnited Airlines
Deal found 4/30$404
This American Airlines deal was found by Cheapflights users on 4/30. 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.
sáb. 8/2312:20 pmTYS - JAC
1 stop8h 26mAmerican Airlines
jue. 8/287:00 amJAC - TYS
1 stop8h 36mAmerican Airlines
Deal found 4/30$440
This American Airlines deal was found by Cheapflights users on 4/30. 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.
lun. 5/122:56 pmTYS - GEG
1 stop8h 57mAmerican Airlines
sáb. 5/171:22 pmGEG - TYS
1 stop7h 36mAmerican Airlines
Deal found 4/30$461
This Alaska Airlines deal was found by Cheapflights users on 4/30. 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.
jue. 6/57:00 amTYS - BOI
1 stop9h 45mAlaska Airlines
lun. 6/98:59 pmBOI - TYS
2 stops12h 48mAlaska Airlines
Deal found 4/30$464
This Delta deal was found by Cheapflights users on 4/29. 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.
mié. 7/164:02 pmTYS - JAC
1 stop6h 19mDelta
mar. 7/226:53 pmJAC - TYS
2 stops13h 21mDelta
Deal found 4/29$485
This American Airlines deal was found by Cheapflights users on 4/30. 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.
mié. 6/117:00 amTYS - IDA
1 stop8h 21mAmerican Airlines
mar. 6/177:00 amIDA - TYS
2 stops15h 14mAmerican Airlines
Deal found 4/30$505
This United Airlines deal was found by Cheapflights users on 4/30. 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.
lun. 5/127:00 amTYS - GEG
2 stops10h 41mUnited Airlines
sáb. 5/176:00 amGEG - TYS
3 stops14h 07mUnited Airlines
Deal found 4/30$519

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 mayo 1, 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

KnoxvilleBoise

TYS - BOI

TYSBOI

Knoxville McGhee Tyson

mié. 6/25

5:57 pm-10:29 pm

1 stop6h 32m

Boise Air Term. Gowen Fld

mié. 7/2

1:46 pm-11:59 pm

1 stop8h 13m

$259

KnoxvilleSpokane

TYS - GEG

TYSGEG

Knoxville McGhee Tyson

mar. 7/22

5:57 pm-10:00 pm

1 stop7h 03m

Spokane

lun. 8/4

12:21 pm-11:59 pm

1 stop8h 38m

$289

KnoxvilleIdaho Falls

TYS - IDA

TYSIDA

Knoxville McGhee Tyson

jue. 5/15

7:00 am-3:25 pm

2 stops10h 25m

Idaho Falls Fanning Field

mar. 5/20

2:40 pm-10:24 pm

1 stop5h 44m

$319

KnoxvilleBoise

TYS - BOI

TYSBOI

Knoxville McGhee Tyson

jue. 5/15

1:52 pm-3:55 pm

1 stop28h 03m

Boise Air Term. Gowen Fld

vie. 5/23

12:16 pm-9:04 am

2 stops18h 48m

$362

KnoxvilleJackson

TYS - JAC

TYSJAC

Knoxville McGhee Tyson

jue. 5/15

4:14 pm-9:17 pm

1 stop7h 03m

Jackson Hole

lun. 5/19

7:00 am-2:59 pm

1 stop5h 59m

$399

KnoxvilleBoise

TYS - BOI

TYSBOI

Knoxville McGhee Tyson

jue. 5/15

7:00 am-4:21 pm

2 stops11h 21m

Boise Air Term. Gowen Fld

sáb. 5/24

2:35 pm-10:28 pm

1 stop5h 53m

$404

KnoxvilleJackson

TYS - JAC

TYSJAC

Knoxville McGhee Tyson

sáb. 8/23

12:20 pm-6:46 pm

1 stop8h 26m

Jackson Hole

jue. 8/28

7:00 am-5:36 pm

1 stop8h 36m

$440

KnoxvilleSpokane

TYS - GEG

TYSGEG

Knoxville McGhee Tyson

lun. 5/12

2:56 pm-8:53 pm

1 stop8h 57m

Spokane

sáb. 5/17

1:22 pm-11:58 pm

1 stop7h 36m

$461

KnoxvilleBoise

TYS - BOI

TYSBOI

Knoxville McGhee Tyson

jue. 6/5

7:00 am-2:45 pm

1 stop9h 45m

Boise Air Term. Gowen Fld

lun. 6/9

8:59 pm-11:47 am

2 stops12h 48m

$464

KnoxvilleJackson

TYS - JAC

TYSJAC

Knoxville McGhee Tyson

mié. 7/16

4:02 pm-8:21 pm

1 stop6h 19m

Jackson Hole

mar. 7/22

6:53 pm-10:14 am

2 stops13h 21m

$485

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/30

Showing 1-10 of 17 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, 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 $406). 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 mayo 1, 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 mayo 1, 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
9,972 reviews

Entertainment

7.1

Crew

8.5

Boarding

8.1

Overall

8.0

Comfort

7.9

Food

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Alaska Airlines
8.0
Very good
9,972 reviews
Alaska Airlines
8.0
Very good
9,972 reviews

Entertainment

7.1

Crew

8.5

Boarding

8.1

Overall

8.0

Comfort

7.9

Food

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Delta
8.0
Very good
7,934 reviews
Alaska Airlines
8.0
Very good
9,972 reviews

Entertainment

7.1

Crew

8.5

Boarding

8.1

Overall

8.0

Comfort

7.9

Food

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
United Airlines
7.4
Good
8,696 reviews
Alaska Airlines
8.0
Very good
9,972 reviews

Entertainment

7.1

Crew

8.5

Boarding

8.1

Overall

8.0

Comfort

7.9

Food

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
9,972 reviews

Entertainment

7.1

Crew

8.5

Boarding

8.1

Overall

8.0

Comfort

7.9

Food

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

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 American Airlines, with whom users have recently found tickets for as low as $270. However, be on the lookout for offers from Alaska 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 $406). 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

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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 mayo 1, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$172Average$524FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$240Average$591FlexibilityNo cancel feeOn-time69%
DeltaCheapest$288Average$396FlexibilityNo cancel feeOn-timeN/A

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