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$136+ 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 2/22. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — TYS
Feb 25 — Mar 41
Wed 2/25
Wed 3/4
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 January 26, 2026.

This Kiwi.com deal was found by Cheapflights users on 1/25. 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.
Thu 3/512:38 pm
BOI
-
TYS
1 stop24h 47m
Multiple Airlines
Wed 3/118:30 am
TYS
-
BOI
2 stops28h 50m
Multiple Airlines
Deal found 1/25$335
This American Airlines deal was found by Cheapflights users on 1/26. 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.
Tue 3/101:35 pm
BOI
-
TYS
1 stop7h 45m
American Airlines
Wed 3/185:40 am
TYS
-
BOI
1 stop9h 08m
American Airlines
Deal found 1/26$385
This Delta deal was found by Cheapflights users on 1/24. 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 6/3011:30 pm
BOI
-
TYS
1 stop7h 41m
Delta
Tue 7/76:15 pm
TYS
-
BOI
2 stops7h 41m
Delta
Deal found 1/24$394
This Delta deal was found by Cheapflights users on 1/25. 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 2/257:30 am
BOI
-
TYS
2 stops13h 42m
Delta
Wed 3/115:40 am
TYS
-
BOI
2 stops10h 25m
Delta
Deal found 1/25$396
This United Airlines deal was found by Cheapflights users on 1/25. 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 3/55:00 am
BOI
-
TYS
1 stop8h 02m
United Airlines
Wed 3/117:00 am
TYS
-
BOI
1 stop7h 13m
United Airlines
Deal found 1/25$411
This United Airlines deal was found by Cheapflights users on 1/23. 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.
Wed 3/46:25 am
BOI
-
TYS
2 stops12h 12m
United Airlines
Fri 3/134:18 pm
TYS
-
BOI
1 stop7h 11m
United Airlines
Deal found 1/23$416
This Southwest deal was found by Cheapflights users on 1/25. 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.
Wed 4/86:40 am
BOI
-
TYS
2 stops11h 00m
Southwest
Tue 4/147:05 am
TYS
-
BOI
2 stops11h 35m
Southwest
Deal found 1/25$421
This Southwest deal was found by Cheapflights users on 1/25. 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 3/175:40 am
BOI
-
TYS
2 stops12h 25m
Southwest
Wed 3/252:25 pm
TYS
-
BOI
2 stops11h 25m
Southwest
Deal found 1/25$427
This Delta deal was found by Cheapflights users on 1/26. 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.
Mon 6/2911:30 pm
BOI
-
TYS
1 stop7h 41m
Delta
Mon 7/65:57 pm
TYS
-
BOI
1 stop6h 41m
Delta
Deal found 1/26$437
This United Airlines deal was found by Cheapflights users on 1/23. 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.
Wed 2/2512:16 pm
BOI
-
TYS
1 stop6h 21m
United Airlines
Wed 3/46:45 am
TYS
-
BOI
2 stops8h 53m
United Airlines
Deal found 1/23$442

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 January 26, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$335
(Kiwi.com)

One-way from

$136
(Kiwi.com)

Popular in

July

Cheapest in

January

Average price

$304
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
Highest demand for flights based on searches. 13% potential increase in price ($75 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($14 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
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 January 26, 2026.
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

Thu 3/5

12:38 pm-3:25 pm

1 stop24h 47m

Knoxville McGhee Tyson

Wed 3/11

8:30 am-11:20 am

2 stops28h 50m

$335

BoiseKnoxville

BOI - TYS

BOITYS

Boise Air Term. Gowen Fld

Wed 3/11

6:15 am-3:02 pm

1 stop6h 47m

Knoxville McGhee Tyson

Wed 3/18

4:18 pm-9:29 pm

1 stop7h 11m

$385

BoiseKnoxville

BOI - TYS

BOITYS

Boise Air Term. Gowen Fld

Wed 3/4

1:39 pm-12:28 am

1 stop8h 49m

Knoxville McGhee Tyson

Wed 3/11

4:29 pm-10:23 pm

1 stop7h 54m

$385

BoiseKnoxville

BOI - TYS

BOITYS

Boise Air Term. Gowen Fld

Tue 3/3

6:25 am-3:05 pm

1 stop6h 40m

Knoxville McGhee Tyson

Thu 3/12

4:18 pm-9:29 pm

1 stop7h 11m

$385

BoiseKnoxville

BOI - TYS

BOITYS

Boise Air Term. Gowen Fld

Wed 3/11

6:15 am-3:02 pm

1 stop6h 47m

Knoxville McGhee Tyson

Tue 3/17

4:18 pm-9:29 pm

1 stop7h 11m

$385

BoiseKnoxville

BOI - TYS

BOITYS

Boise Air Term. Gowen Fld

Mon 3/2

6:35 pm-9:04 am

2 stops12h 29m

Knoxville McGhee Tyson

Wed 3/11

6:35 am-2:05 pm

1 stop9h 30m

$390

BoiseKnoxville

BOI - TYS

BOITYS

Boise Air Term. Gowen Fld

Wed 4/8

1:53 pm-11:56 pm

1 stop8h 03m

Knoxville McGhee Tyson

Tue 4/14

5:00 am-12:38 pm

2 stops9h 38m

$390

BoiseKnoxville

BOI - TYS

BOITYS

Boise Air Term. Gowen Fld

Sat 2/21

2:40 pm-10:30 pm

1 stop5h 50m

Knoxville McGhee Tyson

Sat 2/28

11:41 am-8:55 pm

2 stops11h 14m

$390

BoiseKnoxville

BOI - TYS

BOITYS

Boise Air Term. Gowen Fld

Sun 2/15

11:56 am-7:18 pm

1 stop29h 22m

$155

BoiseKnoxville

BOI - TYS

BOITYS

Boise Air Term. Gowen Fld

Sun 2/22

11:56 am-6:32 pm

2 stops28h 36m

$188

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/25

Showing 1-10 of 16 results
1
2

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 January.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice 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 FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Boise-Knoxville flight deals on Cheapflights vs. FlightHub >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 FlightHub the most. FlightHub 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

How far ahead should I book a flight from Boise to Knoxville?

Use this chart to determine the optimal time to book a round-trip flight from Boise to Knoxville. Price data was last updated on January 23, 2026.

The price you pay for your flight from Boise to Knoxville may vary depending on when you book. For the best chance of a lower fare, look to book 32 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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 $389). 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.

How much does it cost to fly round-trip from Boise to Knoxville?

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 January 26, 2026.
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
11,792 reviews

Food

7.1

Comfort

7.8

Crew

8.5

Boarding

8.1

Entertainment

7.0

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Jan 2026

STS - LAX

Enjoyed staff assistance from ticking thru tsa , boarding and in the plane Couldn’t pick a seat except upgrading
Alaska Airlines
8.0
Very good
11,792 reviews
Alaska Airlines
8.0
Very good
11,792 reviews

Food

7.1

Comfort

7.8

Crew

8.5

Boarding

8.1

Entertainment

7.0

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Jan 2026

STS - LAX

Enjoyed staff assistance from ticking thru tsa , boarding and in the plane Couldn’t pick a seat except upgrading
Delta
7.9
Good
8,113 reviews
Alaska Airlines
8.0
Very good
11,792 reviews

Food

7.1

Comfort

7.8

Crew

8.5

Boarding

8.1

Entertainment

7.0

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Jan 2026

STS - LAX

Enjoyed staff assistance from ticking thru tsa , boarding and in the plane Couldn’t pick a seat except upgrading
United Airlines
7.4
Good
9,200 reviews
Alaska Airlines
8.0
Very good
11,792 reviews

Food

7.1

Comfort

7.8

Crew

8.5

Boarding

8.1

Entertainment

7.0

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Jan 2026

STS - LAX

Enjoyed staff assistance from ticking thru tsa , boarding and in the plane Couldn’t pick a seat except upgrading
American Airlines
7.2
Good
11,189 reviews
Alaska Airlines
8.0
Very good
11,792 reviews

Food

7.1

Comfort

7.8

Crew

8.5

Boarding

8.1

Entertainment

7.0

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Jan 2026

STS - LAX

Enjoyed staff assistance from ticking thru tsa , boarding and in the plane Couldn’t pick a seat except upgrading

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 47m. Fly via United Airlines or American Airlines to get the fastest option. Boise and Knoxville are separated by a distance of 1782 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • 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 48% 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 $179 on American Airlines. Other airlines that offer cheap prices include Delta from $187 and United Airlines from $260 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 $389). 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 January 26, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$254Average$488FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$258Average$388FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$318Average$553FlexibilityNo cancel feeOn-time69%
Alaska AirlinesCheapest$449Average$672FlexibilityNo cancel feeOn-time75%

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