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$344+ Cheap flights from Boise to Knoxville (BOI - 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 12/21. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — TYS
Jan 11 — Jan 181
Sun 1/11
Sun 1/18
1 adult, Economy
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Cheap flight deals from Boise to Knoxville

Cheapest flights from Boise to Knoxville
Explore the most affordable flight options available from Boise to Knoxville. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 12, 2025.

This Kiwi.com deal was found by Cheapflights users on 12/10. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/303:20 pmBOI - TYS
2 stops27h 19mMultiple Airlines
Thu 1/84:23 pmTYS - BOI
1 stop20h 54mMultiple Airlines
Deal found 12/10$379
This Kiwi.com deal was found by Cheapflights users on 12/10. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/303:20 pmBOI - TYS
2 stops27h 19mMultiple Airlines
Sun 1/114:23 pmTYS - BOI
1 stop20h 54mMultiple Airlines
Deal found 12/10$387
This Kiwi.com deal was found by Cheapflights users on 12/10. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/2812:38 pmBOI - TYS
1 stop25h 13mFrontier
Thu 1/84:23 pmTYS - BOI
1 stop20h 54mFrontier
Deal found 12/10$426
This Kiwi.com deal was found by Cheapflights users on 12/10. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/2812:38 pmBOI - TYS
1 stop25h 13mFrontier
Sun 1/114:23 pmTYS - BOI
1 stop20h 54mFrontier
Deal found 12/10$433
This Kiwi.com deal was found by Cheapflights users on 12/10. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/2812:38 pmBOI - TYS
1 stop25h 13mMultiple Airlines
Sat 1/108:30 amTYS - BOI
2 stops28h 47mMultiple Airlines
Deal found 12/10$451
This Kiwi.com deal was found by Cheapflights users on 12/10. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/2812:38 pmBOI - TYS
1 stop25h 13mMultiple Airlines
Thu 1/84:23 pmTYS - BOI
2 stops18h 57mMultiple Airlines
Deal found 12/10$491
This Kiwi.com deal was found by Cheapflights users on 12/10. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/299:46 pmBOI - TYS
2 stops16h 05mMultiple Airlines
Thu 1/84:23 pmTYS - BOI
1 stop20h 54mMultiple Airlines
Deal found 12/10$497
This Kiwi.com deal was found by Cheapflights users on 12/10. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/299:46 pmBOI - TYS
2 stops16h 05mMultiple Airlines
Sun 1/114:23 pmTYS - BOI
1 stop20h 54mMultiple Airlines
Deal found 12/10$504
This Kiwi.com deal was found by Cheapflights users on 12/11. 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.
Sun 12/2812:38 pmBOI - TYS
1 stop25h 13mMultiple Airlines
Sun 1/46:30 amTYS - BOI
1 stop7h 13mMultiple Airlines
Deal found 12/11$522
This Kiwi.com deal was found by Cheapflights users on 12/10. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/2812:38 pmBOI - TYS
1 stop25h 13mMultiple Airlines
Sun 1/114:23 pmTYS - BOI
2 stops18h 57mMultiple Airlines
Deal found 12/10$525
This Alaska Airlines deal was found by Cheapflights users on 12/10. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/317:00 amBOI - TYS
1 stop6h 39mAlaska Airlines
Sat 1/106:00 amTYS - BOI
1 stop9h 08mAlaska Airlines
Deal found 12/10$557
This Delta deal was found by Cheapflights users on 12/10. 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 12/115:50 amBOI - TYS
2 stops11h 02mDelta
Sat 12/138:30 amTYS - BOI
1 stop7h 48mDelta
Deal found 12/10$569

Find flight deals from Boise to Knoxville

Discover tips and strategies to find the most affordable flight options for your journey from Boise (BOI) to Knoxville (TYS). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated December 12, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$379
(Kiwi.com)

One-way from

$344
(Kiwi.com)

Popular in

March

Cheapest in

January

Average price

$636
Provider with most accurate pricing for Boise Air Term. Gowen Fld-Knoxville McGhee Tyson flight deals.
Search Deals
Provider most trusted by Cheapflights users for Boise Air Term. Gowen Fld-Knoxville McGhee Tyson flights.
Search Deals
From Boise Air Term. Gowen Fld to Knoxville McGhee Tyson
Search Deals
One-way flight from Boise Air Term. Gowen Fld to Knoxville McGhee Tyson
Search Deals
High demand for flights, 1% potential price rise
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($25 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Boise 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 December 12, 2025.
Use the filters below to find and compare flights from Boise to Knoxville that are best for you.

Fly from

Boise

Fly to

Knoxville

Route

Depart

Return

Price

BoiseKnoxville

BOI - TYS

BOITYS

Boise Air Term. Gowen Fld

Tue 12/30

3:20 pm-8:39 pm

2 stops27h 19m

Knoxville McGhee Tyson

Thu 1/8

4:23 pm-11:17 am

1 stop20h 54m

$379

BoiseKnoxville

BOI - TYS

BOITYS

Boise Air Term. Gowen Fld

Wed 1/21

3:03 pm-11:09 pm

1 stop6h 06m

Knoxville McGhee Tyson

Fri 1/30

5:40 am-12:30 pm

1 stop8h 50m

$413

BoiseKnoxville

BOI - TYS

BOITYS

Boise Air Term. Gowen Fld

Thu 1/1

12:38 pm-11:11 pm

2 stops32h 33m

Knoxville McGhee Tyson

Thu 1/8

4:23 pm-11:17 am

1 stop20h 54m

$454

BoiseKnoxville

BOI - TYS

BOITYS

Boise Air Term. Gowen Fld

Sun 1/25

7:16 am-3:46 pm

1 stop6h 30m

Knoxville McGhee Tyson

Thu 1/29

12:19 pm-7:25 pm

1 stop9h 06m

$527

BoiseKnoxville

BOI - TYS

BOITYS

Boise Air Term. Gowen Fld

Sun 1/25

7:05 pm-10:32 am

2 stops13h 27m

Knoxville McGhee Tyson

Thu 1/29

6:45 am-12:39 pm

1 stop7h 54m

$532

BoiseKnoxville

BOI - TYS

BOITYS

Boise Air Term. Gowen Fld

Sun 12/21

12:38 pm-3:51 pm

1 stop25h 13m

$344

BoiseKnoxville

BOI - TYS

BOITYS

Boise Air Term. Gowen Fld

Thu 12/18

11:35 pm-9:38 am

1 stop8h 03m

$354

BoiseKnoxville

BOI - TYS

BOITYS

Boise Air Term. Gowen Fld

Thu 12/18

12:38 pm-2:55 pm

3 stops24h 17m

$407

BoiseKnoxville

BOI - TYS

BOITYS

Boise Air Term. Gowen Fld

Sun 12/21

7:00 am-8:43 pm

2 stops11h 43m

$465

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/11

Compare providers for flights from Boise to Knoxville

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Boise to Knoxville in December.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars
PricelinePrice Accuracy1 starTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Boise-Knoxville flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Boise-Knoxville flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Boise-Knoxville flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Boise-Knoxville flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Boise-Knoxville flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Boise to Knoxville

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

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

Currently, September is the cheapest month in which you can book a flight from Boise to Knoxville (average of $236). Flying from Boise to Knoxville in December is currently the most expensive (average of $412). 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 BOI to TYS?

Find hourly flight availability from Boise 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 December 12, 2025.

When flying from Boise to Knoxville, the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 38% versus a flight in the morning.

Reviews of airlines servicing Knoxville

Get insights into the airlines that provide service to Knoxville. 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 Knoxville. Reviews last updated December 12, 2025.
See what other customers who have flown with Alaska Airlines, Delta, and United Airlines from Boise to Knoxville have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
11,432 reviews

Entertainment

7.0

Food

7.1

Boarding

8.1

Comfort

7.8

Crew

8.5

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Art,Dec 2025

SAN - OGG

It was a five hour flight and my seat did not recline. I have had three back surgeries and I’m solid bone for my L3 vertebrae all the way to my tailbone. My body has never hurt so much. There was no TV on this flight and only a small can of soda was free.
Alaska Airlines
8.0
Very good
11,432 reviews
Alaska Airlines
8.0
Very good
11,432 reviews

Entertainment

7.0

Food

7.1

Boarding

8.1

Comfort

7.8

Crew

8.5

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Art,Dec 2025

SAN - OGG

It was a five hour flight and my seat did not recline. I have had three back surgeries and I’m solid bone for my L3 vertebrae all the way to my tailbone. My body has never hurt so much. There was no TV on this flight and only a small can of soda was free.
Delta
7.9
Good
8,007 reviews
Alaska Airlines
8.0
Very good
11,432 reviews

Entertainment

7.0

Food

7.1

Boarding

8.1

Comfort

7.8

Crew

8.5

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Art,Dec 2025

SAN - OGG

It was a five hour flight and my seat did not recline. I have had three back surgeries and I’m solid bone for my L3 vertebrae all the way to my tailbone. My body has never hurt so much. There was no TV on this flight and only a small can of soda was free.
United Airlines
7.4
Good
9,095 reviews
Alaska Airlines
8.0
Very good
11,432 reviews

Entertainment

7.0

Food

7.1

Boarding

8.1

Comfort

7.8

Crew

8.5

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Art,Dec 2025

SAN - OGG

It was a five hour flight and my seat did not recline. I have had three back surgeries and I’m solid bone for my L3 vertebrae all the way to my tailbone. My body has never hurt so much. There was no TV on this flight and only a small can of soda was free.
American Airlines
7.2
Good
11,050 reviews
Alaska Airlines
8.0
Very good
11,432 reviews

Entertainment

7.0

Food

7.1

Boarding

8.1

Comfort

7.8

Crew

8.5

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Art,Dec 2025

SAN - OGG

It was a five hour flight and my seat did not recline. I have had three back surgeries and I’m solid bone for my L3 vertebrae all the way to my tailbone. My body has never hurt so much. There was no TV on this flight and only a small can of soda was free.

Related info for your journey

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

  • How long is the flight from Boise to Knoxville?

    There are many flights that can get you from Boise to Knoxville in 6h 06m. Fly via Delta to get the fastest option. Boise and Knoxville are separated by a distance of 1782 mi.

  • What are the cheapest airlines flying from Boise to Knoxville round-trip?

    Cheapflights users have booked flights from Boise to Knoxville round-trip from $254. Other airlines that can offer you cheap pricing are American Airlines, from $258, and United Airlines, from $318. Delta is 50% cheaper than the average price of flights available within the next 90 days to this destination.

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

    One-way options have recently been found by users for as low as $159 on United Airlines. Other airlines that offer cheap prices include Delta from $159 and American Airlines from $194 one-way.

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

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

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

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

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

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

    Currently, September is the cheapest month in which you can book a flight from Boise to Knoxville (average of $236). Flying from Boise to Knoxville in December is currently the most expensive (average of $412). 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
Cherokee
Crossville
Corbin
Morristown
Bryson City
Alcoa
Oak Ridge
Murphy

Browse thousands of different options on Cheapflights for your next trip

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Top 4 airlines flying from Boise to Knoxville

Discover the top 4 airlines that operate flights from Boise 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 December 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$254Average$488FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$258Average$378FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$318Average$549FlexibilityNo cancel feeOn-time69%
Alaska AirlinesCheapest$379Average$672FlexibilityNo cancel feeOn-time75%

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