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Cheap flights from Knoxville to Boise from $178

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 7/28. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Knoxville to Boise

Cheap round-trip flights

Enter your travel dates to find the best prices.
Delta Logo
6:35 am - 1:42 pm
TYS
-
BOI
9h 07m
1 stop
Delta Logo
11:10 pm - 9:36 am
BOI
-
TYS
8h 26m
1 stop
$381Delta
Thu, Aug 20 - Mon, Aug 24
Southwest Logo
4:50 pm - 10:35 pm
TYS
-
BOI
7h 45m
1 stop
Southwest Logo
6:00 am - 3:55 pm
BOI
-
TYS
7h 55m
2 stops
$386Southwest
Thu, Aug 20 - Mon, Aug 24
Multiple Airlines Logo
7:00 am - 12:04 pm
TYS
-
BOI
7h 04m
1 stop
Multiple Airlines Logo
12:59 pm - 7:11 pm
BOI
-
TYS
28h 12m
2 stops
$390Multiple Airlines
Thu, Sep 24 - Thu, Oct 1
Southwest Logo
8:25 am - 4:15 pm
TYS
-
BOI
9h 50m
2 stops
Southwest Logo
6:00 am - 3:55 pm
BOI
-
TYS
7h 55m
2 stops
$391Southwest
Thu, Aug 20 - Mon, Aug 24
Southwest Logo
3:00 pm - 11:10 pm
TYS
-
BOI
10h 10m
1 stop
Southwest Logo
6:00 am - 4:30 pm
BOI
-
TYS
8h 30m
2 stops
$403Southwest
Wed, Aug 5 - Wed, Aug 12
Delta Logo
8:35 am - 12:53 pm
TYS
-
BOI
6h 18m
1 stop
Delta Logo
11:10 pm - 9:36 am
BOI
-
TYS
8h 26m
1 stop
$406Delta
Wed, Jul 29 - Mon, Aug 3
United Airlines Logo
4:56 pm - 9:29 pm
TYS
-
BOI
6h 33m
1 stop
United Airlines Logo
12:24 pm - 8:53 pm
BOI
-
TYS
6h 29m
1 stop
$417United Airlines
Wed, Aug 5 - Wed, Aug 12
Southwest Logo
5:25 pm - 1:05 am
TYS
-
BOI
9h 40m
2 stops
Southwest Logo
4:45 pm - 12:05 pm
BOI
-
TYS
17h 20m
2 stops
$428Southwest
Fri, Oct 2 - Tue, Oct 6
Southwest Logo
2:05 pm - 10:35 pm
TYS
-
BOI
10h 30m
2 stops
Southwest Logo
10:45 am - 9:00 pm
BOI
-
TYS
8h 15m
2 stops
$429Southwest
Thu, Sep 24 - Thu, Oct 1
American Airlines Logo
5:35 pm - 10:27 pm
TYS
-
BOI
6h 52m
1 stop
American Airlines Logo
12:10 pm - 11:18 pm
BOI
-
TYS
9h 08m
1 stop
$436American Airlines
Fri, Oct 2 - Tue, Oct 6

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Delta flights from Knoxville to Boise

Our best Delta deals on Knoxville to Boise flight tickets
Delta
Aug 20
TYS6:35 amKnoxville McGhee Tyson
9h 07m
1 stop
BOI1:42 pmBoise Air Term. Gowen Fld
Aug 24
BOI11:10 pmBoise Air Term. Gowen Fld
8h 26m
1 stop
TYS9:36 amKnoxville McGhee Tyson
$381
Delta
Jul 29
TYS8:35 amKnoxville McGhee Tyson
6h 18m
1 stop
BOI12:53 pmBoise Air Term. Gowen Fld
Aug 3
BOI11:10 pmBoise Air Term. Gowen Fld
8h 26m
1 stop
TYS9:36 amKnoxville McGhee Tyson
$406
Delta
Jul 24
TYS3:54 pmKnoxville McGhee Tyson
8h 03m
1 stop
BOI9:57 pmBoise Air Term. Gowen Fld
Jul 28
BOI11:10 pmBoise Air Term. Gowen Fld
8h 38m
1 stop
TYS9:48 amKnoxville McGhee Tyson
$497

Southwest flights from Knoxville to Boise

Our best Southwest deals on Knoxville to Boise flight tickets
Southwest
Aug 20
TYS4:50 pmKnoxville McGhee Tyson
7h 45m
1 stop
BOI10:35 pmBoise Air Term. Gowen Fld
Aug 24
BOI6:00 amBoise Air Term. Gowen Fld
7h 55m
2 stops
TYS3:55 pmKnoxville McGhee Tyson
$386
Southwest
Aug 20
TYS8:25 amKnoxville McGhee Tyson
9h 50m
2 stops
BOI4:15 pmBoise Air Term. Gowen Fld
Aug 24
BOI6:00 amBoise Air Term. Gowen Fld
7h 55m
2 stops
TYS3:55 pmKnoxville McGhee Tyson
$391
Southwest
Aug 5
TYS3:00 pmKnoxville McGhee Tyson
10h 10m
1 stop
BOI11:10 pmBoise Air Term. Gowen Fld
Aug 12
BOI6:00 amBoise Air Term. Gowen Fld
8h 30m
2 stops
TYS4:30 pmKnoxville McGhee Tyson
$403

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 June 23, 2026.
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

Cheapest round-trip

KnoxvilleBoise

TYS - BOI

TYSBOI

Knoxville McGhee Tyson

Thu 8/20

6:35 am-1:42 pm

1 stop9h 07m

Boise Air Term. Gowen Fld

Mon 8/24

11:10 pm-9:36 am

1 stop8h 26m

$381

KnoxvilleBoise

TYS - BOI

TYSBOI

Knoxville McGhee Tyson

Thu 8/20

4:50 pm-10:35 pm

1 stop7h 45m

Boise Air Term. Gowen Fld

Mon 8/24

6:00 am-3:55 pm

2 stops7h 55m

$386

KnoxvilleBoise

TYS - BOI

TYSBOI

Knoxville McGhee Tyson

Thu 9/24

7:00 am-12:04 pm

1 stop7h 04m

Boise Air Term. Gowen Fld

Thu 10/1

12:59 pm-7:11 pm

2 stops28h 12m

$390

KnoxvilleBoise

TYS - BOI

TYSBOI

Knoxville McGhee Tyson

Thu 8/20

8:25 am-4:15 pm

2 stops9h 50m

Boise Air Term. Gowen Fld

Mon 8/24

6:00 am-3:55 pm

2 stops7h 55m

$391

KnoxvilleBoise

TYS - BOI

TYSBOI

Knoxville McGhee Tyson

Wed 8/5

3:00 pm-11:10 pm

1 stop10h 10m

Boise Air Term. Gowen Fld

Wed 8/12

6:00 am-4:30 pm

2 stops8h 30m

$403

KnoxvilleBoise

TYS - BOI

TYSBOI

Knoxville McGhee Tyson

Wed 7/29

8:35 am-12:53 pm

1 stop6h 18m

Boise Air Term. Gowen Fld

Mon 8/3

11:10 pm-9:36 am

1 stop8h 26m

$406
Quickest round-trip

KnoxvilleBoise

TYS - BOI

TYSBOI

Knoxville McGhee Tyson

Wed 8/5

4:56 pm-9:29 pm

1 stop6h 33m

Boise Air Term. Gowen Fld

Wed 8/12

12:24 pm-8:53 pm

1 stop6h 29m

$417

KnoxvilleBoise

TYS - BOI

TYSBOI

Knoxville McGhee Tyson

Fri 10/2

5:25 pm-1:05 am

2 stops9h 40m

Boise Air Term. Gowen Fld

Tue 10/6

4:45 pm-12:05 pm

2 stops17h 20m

$428

KnoxvilleBoise

TYS - BOI

TYSBOI

Knoxville McGhee Tyson

Thu 9/24

2:05 pm-10:35 pm

2 stops10h 30m

Boise Air Term. Gowen Fld

Thu 10/1

10:45 am-9:00 pm

2 stops8h 15m

$429

KnoxvilleBoise

TYS - BOI

TYSBOI

Knoxville McGhee Tyson

Fri 10/2

5:35 pm-10:27 pm

1 stop6h 52m

Boise Air Term. Gowen Fld

Tue 10/6

12:10 pm-11:18 pm

1 stop9h 08m

$436

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 12 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 typical price of a round-trip flight between Knoxville and Boise?

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 $384. If you aren’t able to travel during the month of April, then book flights to Boise from Knoxville during August instead. Flights to Boise in August, while not as cheap as those in April, still average around $433.

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

Fastest flight time

6h 58m

Direct flights

None
The fastest flight from Knoxville to Boise takes 6h 58m
There are no direct flights from Knoxville to Boise. There are no popular flight routes from Knoxville to Boise.
Search flight deals

Frequently asked questions about flying from Knoxville to Boise

  • 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 58m, 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
DeltaPriceFrom $288Free CancellationRating
7.8
8,427 reviews
Search Delta flights
United AirlinesPriceFrom $350Free CancellationRating
7.4
9,879 reviews
Search United Airlines flights
American AirlinesPriceFrom $378Free CancellationRating
7.1
11,749 reviews
Search American Airlines flights

Traveling to a place near Boise?

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