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Cheap flights from Knoxville to Boise from $150

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Knoxville to Boise departing on 10/23. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Find the cheapest flights from Knoxville to Boise

Cheap round-trip flights

Multiple Airlines Logo
7:00 am - 11:48 amTYS-BOI
6h 48m1 stop
Multiple Airlines Logo
12:33 pm - 6:12 pmBOI-TYS
27h 39m2 stops
$279Multiple Airlines
Find Deal
Thu, Oct 30 - Sun, Nov 2
Multiple Airlines Logo
7:00 am - 11:48 amTYS-BOI
6h 48m1 stop
Multiple Airlines Logo
12:33 pm - 9:36 pmBOI-TYS
31h 03m2 stops
$300Multiple Airlines
Find Deal
Thu, Nov 6 - Sun, Nov 9
Delta Logo
6:45 am - 2:09 pmTYS-BOI
9h 24m1 stop
Delta Logo
3:00 pm - 11:00 pmBOI-TYS
6h 00m1 stop
$389Delta
Find Deal
Sat, Feb 21 - Tue, Feb 24
Delta Logo
6:45 am - 2:09 pmTYS-BOI
9h 24m1 stop
Delta Logo
11:45 am - 9:32 pmBOI-TYS
7h 47m2 stops
$394Delta
Find Deal
Sat, Feb 21 - Tue, Feb 24
American Airlines Logo
12:34 pm - 7:53 pmTYS-BOI
9h 19m1 stop
American Airlines Logo
1:25 pm - 11:52 pmBOI-TYS
8h 27m1 stop
$413American Airlines
Find Deal
Fri, Oct 31 - Sun, Nov 2
American Airlines Logo
8:15 am - 7:53 pmTYS-BOI
13h 38m2 stops
American Airlines Logo
1:25 pm - 11:52 pmBOI-TYS
8h 27m1 stop
$418American Airlines
Find Deal
Fri, Oct 31 - Sun, Nov 2
United Airlines Logo
4:55 pm - 9:21 pmTYS-BOI
6h 26m1 stop
United Airlines Logo
5:15 am - 2:51 pmBOI-TYS
7h 36m1 stop
$437United Airlines
Find Deal
Thu, Oct 30 - Sun, Nov 2
United Airlines Logo
7:00 am - 5:48 pmTYS-BOI
12h 48m2 stops
United Airlines Logo
5:39 pm - 10:29 amBOI-TYS
14h 50m2 stops
$655United Airlines
Find Deal
Wed, Oct 15 - Sun, Oct 19
Alaska Airlines Logo
6:20 pm - 10:07 amTYS-BOI
17h 47m2 stops
Alaska Airlines Logo
6:08 am - 8:43 pmBOI-TYS
12h 35m2 stops
$823Alaska Airlines
Find Deal
Sat, Dec 27 - Wed, Dec 31
Alaska Airlines Logo
6:20 pm - 10:07 amTYS-BOI
17h 47m2 stops
Alaska Airlines Logo
7:00 am - 3:39 pmBOI-TYS
6h 39m1 stop
$871Alaska Airlines
Find Deal
Sat, Dec 27 - Wed, Dec 31

Delta flights from Knoxville to Boise

Our best Delta deals on Knoxville to Boise flight tickets
Delta
Feb 21
TYS6:45 amKnoxville McGhee Tyson
9h 24m
1 stop
BOI2:09 pmBoise Air Term. Gowen Fld
Feb 24
BOI3:00 pmBoise Air Term. Gowen Fld
6h 00m
1 stop
TYS11:00 pmKnoxville McGhee Tyson
$389
Find similar
Delta
Feb 21
TYS6:45 amKnoxville McGhee Tyson
9h 24m
1 stop
BOI2:09 pmBoise Air Term. Gowen Fld
Feb 24
BOI11:45 amBoise Air Term. Gowen Fld
7h 47m
2 stops
TYS9:32 pmKnoxville McGhee Tyson
$394
Find similar
Delta
Feb 14
TYS11:30 amKnoxville McGhee Tyson
11h 32m
2 stops
BOI9:02 pmBoise Air Term. Gowen Fld
Feb 21
BOI11:45 amBoise Air Term. Gowen Fld
9h 15m
2 stops
TYS11:00 pmKnoxville McGhee Tyson
$399
Find similar

United Airlines flights from Knoxville to Boise

Our best United Airlines deals on Knoxville to Boise flight tickets
United Airlines
Oct 30
TYS4:55 pmKnoxville McGhee Tyson
6h 26m
1 stop
BOI9:21 pmBoise Air Term. Gowen Fld
Nov 2
BOI5:15 amBoise Air Term. Gowen Fld
7h 36m
1 stop
TYS2:51 pmKnoxville McGhee Tyson
$437
Find similar
United Airlines
Oct 15
TYS7:00 amKnoxville McGhee Tyson
12h 48m
2 stops
BOI5:48 pmBoise Air Term. Gowen Fld
Oct 19
BOI5:39 pmBoise Air Term. Gowen Fld
14h 50m
2 stops
TYS10:29 amKnoxville McGhee Tyson
$655
Find similar
United Airlines
Oct 16
TYS7:00 amKnoxville McGhee Tyson
11h 58m
2 stops
BOI4:58 pmBoise Air Term. Gowen Fld
Oct 19
BOI7:05 pmBoise Air Term. Gowen Fld
25h 45m
2 stops
TYS10:50 pmKnoxville McGhee Tyson
$677
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Knoxville to Boise 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, momondo users made 832,500 searches. Data last updated September 25, 2025.
Use the filters below to find and compare flights from Knoxville to Boise that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

KnoxvilleBoise

TYS - BOI

TYSBOI

Knoxville McGhee Tyson

Thu 10/30

7:00 am-11:48 am

1 stop6h 48m

Boise Air Term. Gowen Fld

Sun 11/2

12:33 pm-6:12 pm

2 stops27h 39m

$279

KnoxvilleBoise

TYS - BOI

TYSBOI

Knoxville McGhee Tyson

Thu 11/6

7:00 am-11:48 am

1 stop6h 48m

Boise Air Term. Gowen Fld

Sun 11/9

12:33 pm-9:36 pm

2 stops31h 03m

$300

KnoxvilleBoise

TYS - BOI

TYSBOI

Knoxville McGhee Tyson

Sat 2/21

6:45 am-2:09 pm

1 stop9h 24m

Boise Air Term. Gowen Fld

Tue 2/24

3:00 pm-11:00 pm

1 stop6h 00m

$389

KnoxvilleBoise

TYS - BOI

TYSBOI

Knoxville McGhee Tyson

Sat 2/21

6:45 am-2:09 pm

1 stop9h 24m

Boise Air Term. Gowen Fld

Tue 2/24

11:45 am-9:32 pm

2 stops7h 47m

$394

KnoxvilleBoise

TYS - BOI

TYSBOI

Knoxville McGhee Tyson

Fri 10/31

12:34 pm-7:53 pm

1 stop9h 19m

Boise Air Term. Gowen Fld

Sun 11/2

1:25 pm-11:52 pm

1 stop8h 27m

$413

KnoxvilleBoise

TYS - BOI

TYSBOI

Knoxville McGhee Tyson

Fri 10/31

8:15 am-7:53 pm

2 stops13h 38m

Boise Air Term. Gowen Fld

Sun 11/2

1:25 pm-11:52 pm

1 stop8h 27m

$418

KnoxvilleBoise

TYS - BOI

TYSBOI

Knoxville McGhee Tyson

Thu 10/30

4:55 pm-9:21 pm

1 stop6h 26m

Boise Air Term. Gowen Fld

Sun 11/2

5:15 am-2:51 pm

1 stop7h 36m

$437

KnoxvilleBoise

TYS - BOI

TYSBOI

Knoxville McGhee Tyson

Wed 10/15

7:00 am-5:48 pm

2 stops12h 48m

Boise Air Term. Gowen Fld

Sun 10/19

5:39 pm-10:29 am

2 stops14h 50m

$655

KnoxvilleBoise

TYS - BOI

TYSBOI

Knoxville McGhee Tyson

Sat 12/27

6:20 pm-10:07 am

2 stops17h 47m

Boise Air Term. Gowen Fld

Wed 12/31

6:08 am-8:43 pm

2 stops12h 35m

$823

KnoxvilleBoise

TYS - BOI

TYSBOI

Knoxville McGhee Tyson

Sat 12/27

6:20 pm-10:07 am

2 stops17h 47m

Boise Air Term. Gowen Fld

Wed 12/31

7:00 am-3:39 pm

1 stop6h 39m

$871

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Boise from

How to get the cheapest flight ticket from Knoxville to Boise

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Boise?

The month of April is, on average, the cheapest month to fly to Boise from Knoxville, with most prices found around $249. If you aren’t able to travel during the month of April, then book flights to Boise from Knoxville during January instead. Flights to Boise in January, while not as cheap as those in April, still average around $341.

What is the cheapest day to depart on your flight to Boise?

Our data shows that Friday is the least expensive day to fly to Boise. Tickets to fly out on this day can be as low as $377. If your travel schedule is flexible, try to avoid departing on a Monday because tickets tend to average around $756. These prices are subject to change though, so be sure to set up a Price Alert for flights to Boise.

What is the cheapest time of day to depart on your flight to Boise?

Our data shows that the cheapest Knoxville to Boise flights are usually those with departure times in the morning. Our users have found flights to Boise in the morning for as low as $498. In the afternoon is when there is more demand to fly to Boise, so prices are often more expensive at around $546 per ticket.

When to book flights from Knoxville to Boise

Are you open to changing your travel dates? Check out the ideal times to fly from Knoxville to Boise according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Knoxville to Boise (TYS to BOI) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Knoxville to Boise

Direct flights

None
There are no direct flights from Knoxville to Boise. There are no popular flight routes from Knoxville to Boise.
Search flight deals

  • How far is Knoxville McGhee Tyson to Boise Air Term. Gowen Fld by plane?

    The distance between Knoxville McGhee Tyson and Boise Air Term. Gowen Fld is about 1779.7 mi. Flights usually cover this in 6h 26m, depending on flying conditions and air traffic around both airports.

  • When did momondo last update prices for flights from Knoxville McGhee Tyson Airport to Boise Air Term. Gowen Fld Airport?

    Prices for flights from Knoxville McGhee Tyson Airport to Boise Air Term. Gowen Fld Airport were last updated today.

  • How many operators does momondo search for flights from Knoxville McGhee Tyson Airport to Boise Air Term. Gowen Fld Airport?

  • How old do you have to be to fly from Knoxville McGhee Tyson Airport to Boise Air Term. Gowen Fld Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Knoxville McGhee Tyson Airport to Boise Air Term. Gowen Fld Airport.

  • What documentation or ID do you need to fly to Boise Air Term. Gowen Fld Airport?

    The necessary travel and health documents for your Boise Air Term. Gowen Fld Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

  • What is the most popular airline from Knoxville to Boise?

Best airlines flying from Knoxville to Boise

Compare and see reviews for airlines that fly from Knoxville to Boise with momondo
Airline
Rating
Free Cancellation
Price
American AirlinesPriceFrom $172Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
DeltaPriceFrom $269Free CancellationRating
7.9
7,973 reviews
Search Delta flights
United AirlinesPriceFrom $313Free CancellationRating
7.4
8,928 reviews
Search United Airlines flights

Traveling to a place near Boise?

Book flights to Boise if you plan to visit one of these locations
Nampa
McCall
Meridian
Caldwell
Ontario
Eagle

Why use momondo?

Why should I use momondo to find a flight deal from Knoxville to Boise?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Knoxville to Boise. momondo saves you time and could save you money on your trip.

Can I find flights from Knoxville to Boise with flexible booking policies on momondo?

Flights from Knoxville to Boise with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from Knoxville to Boise?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Boise from Knoxville.

I’m not ready to book a flight from Knoxville to Boise right now. Can momondo alert me if prices change?

If you are simply researching potential flights to Boise, momondo offers a useful price alert feature which will track prices for flights to Boise from Knoxville and alert you when they change.

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