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Cheap flights from Knoxville to Boise from $147

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 6/3. 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

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Find the cheapest flights from Knoxville to Boise

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
4:56 pm - 10:32 pm
TYS
-
BOI
7h 36m
1 stop
United Airlines Logo
2:44 pm - 10:38 pm
BOI
-
TYS
5h 54m
1 stop
$429United Airlines
Sat, Sep 5 - Sat, Sep 12
United Airlines Logo
10:00 am - 5:53 pm
TYS
-
BOI
9h 53m
2 stops
United Airlines Logo
6:30 am - 3:54 pm
BOI
-
TYS
7h 24m
1 stop
$434United Airlines
Sat, Sep 5 - Sat, Sep 12
American Airlines Logo
1:40 pm - 11:30 pm
TYS
-
BOI
11h 50m
2 stops
American Airlines Logo
12:10 pm - 12:10 am
BOI
-
TYS
10h 00m
2 stops
$439American Airlines
Sat, Sep 5 - Sat, Sep 19
Southwest Logo
2:45 pm - 1:00 am
TYS
-
BOI
12h 15m
2 stops
Southwest Logo
7:55 pm - 12:00 pm
BOI
-
TYS
14h 05m
2 stops
$450Southwest
Thu, May 14 - Mon, May 18
United Airlines Logo
7:00 am - 11:49 am
TYS
-
BOI
6h 49m
1 stop
United Airlines Logo
6:15 am - 3:06 pm
BOI
-
TYS
6h 51m
1 stop
$451United Airlines
Wed, Apr 15 - Sat, Apr 18
United Airlines Logo
7:00 am - 11:49 am
TYS
-
BOI
6h 49m
1 stop
United Airlines Logo
7:11 am - 10:29 pm
BOI
-
TYS
13h 18m
2 stops
$456United Airlines
Wed, Apr 15 - Sat, Apr 18
Southwest Logo
7:00 am - 2:50 pm
TYS
-
BOI
9h 50m
2 stops
Southwest Logo
8:20 am - 4:30 pm
BOI
-
TYS
6h 10m
1 stop
$458Southwest
Wed, Sep 2 - Tue, Sep 8
Southwest Logo
2:45 pm - 1:00 am
TYS
-
BOI
12h 15m
2 stops
Southwest Logo
7:55 pm - 12:00 pm
BOI
-
TYS
14h 05m
2 stops
$462Southwest
Mon, Apr 20 - Mon, Apr 27
Southwest Logo
7:00 am - 2:50 pm
TYS
-
BOI
9h 50m
2 stops
Southwest Logo
7:05 am - 6:55 pm
BOI
-
TYS
9h 50m
2 stops
$463Southwest
Wed, Sep 2 - Tue, Sep 8
American Airlines Logo
8:48 pm - 12:49 pm
TYS
-
BOI
18h 01m
1 stop
American Airlines Logo
1:53 pm - 11:56 pm
BOI
-
TYS
8h 03m
1 stop
$466American Airlines
Mon, Apr 20 - Mon, Apr 27

United Airlines flights from Knoxville to Boise

Our best United Airlines deals on Knoxville to Boise flight tickets
United Airlines
Sep 5
TYS4:56 pmKnoxville McGhee Tyson
7h 36m
1 stop
BOI10:32 pmBoise Air Term. Gowen Fld
Sep 12
BOI2:44 pmBoise Air Term. Gowen Fld
5h 54m
1 stop
TYS10:38 pmKnoxville McGhee Tyson
$429
United Airlines
Sep 5
TYS10:00 amKnoxville McGhee Tyson
9h 53m
2 stops
BOI5:53 pmBoise Air Term. Gowen Fld
Sep 12
BOI6:30 amBoise Air Term. Gowen Fld
7h 24m
1 stop
TYS3:54 pmKnoxville McGhee Tyson
$434
United Airlines
Apr 15
TYS7:00 amKnoxville McGhee Tyson
6h 49m
1 stop
BOI11:49 amBoise Air Term. Gowen Fld
Apr 18
BOI6:15 amBoise Air Term. Gowen Fld
6h 51m
1 stop
TYS3:06 pmKnoxville McGhee Tyson
$451

American Airlines flights from Knoxville to Boise

Our best American Airlines deals on Knoxville to Boise flight tickets
American Airlines
Sep 5
TYS1:40 pmKnoxville McGhee Tyson
11h 50m
2 stops
BOI11:30 pmBoise Air Term. Gowen Fld
Sep 19
BOI12:10 pmBoise Air Term. Gowen Fld
10h 00m
2 stops
TYS12:10 amKnoxville McGhee Tyson
$439
American Airlines
Apr 20
TYS8:48 pmKnoxville McGhee Tyson
18h 01m
1 stop
BOI12:49 pmBoise Air Term. Gowen Fld
Apr 27
BOI1:53 pmBoise Air Term. Gowen Fld
8h 03m
1 stop
TYS11:56 pmKnoxville McGhee Tyson
$466
American Airlines
Apr 20
TYS8:48 pmKnoxville McGhee Tyson
18h 01m
1 stop
BOI12:49 pmBoise Air Term. Gowen Fld
Apr 27
BOI6:26 pmBoise Air Term. Gowen Fld
13h 31m
2 stops
TYS9:57 amKnoxville McGhee Tyson
$471

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 March 24, 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
Quickest round-trip

KnoxvilleBoise

TYS - BOI

TYSBOI

Knoxville McGhee Tyson

Sat 9/5

4:56 pm-10:32 pm

1 stop7h 36m

Boise Air Term. Gowen Fld

Sat 9/12

2:44 pm-10:38 pm

1 stop5h 54m

$429

KnoxvilleBoise

TYS - BOI

TYSBOI

Knoxville McGhee Tyson

Sat 9/5

10:00 am-5:53 pm

2 stops9h 53m

Boise Air Term. Gowen Fld

Sat 9/12

6:30 am-3:54 pm

1 stop7h 24m

$434

KnoxvilleBoise

TYS - BOI

TYSBOI

Knoxville McGhee Tyson

Sat 9/5

1:40 pm-11:30 pm

2 stops11h 50m

Boise Air Term. Gowen Fld

Sat 9/19

12:10 pm-12:10 am

2 stops10h 00m

$439

KnoxvilleBoise

TYS - BOI

TYSBOI

Knoxville McGhee Tyson

Thu 5/14

2:45 pm-1:00 am

2 stops12h 15m

Boise Air Term. Gowen Fld

Mon 5/18

7:55 pm-12:00 pm

2 stops14h 05m

$450

KnoxvilleBoise

TYS - BOI

TYSBOI

Knoxville McGhee Tyson

Wed 4/15

7:00 am-11:49 am

1 stop6h 49m

Boise Air Term. Gowen Fld

Sat 4/18

6:15 am-3:06 pm

1 stop6h 51m

$451

KnoxvilleBoise

TYS - BOI

TYSBOI

Knoxville McGhee Tyson

Wed 4/15

7:00 am-11:49 am

1 stop6h 49m

Boise Air Term. Gowen Fld

Sat 4/18

7:11 am-10:29 pm

2 stops13h 18m

$456

KnoxvilleBoise

TYS - BOI

TYSBOI

Knoxville McGhee Tyson

Wed 9/2

7:00 am-2:50 pm

2 stops9h 50m

Boise Air Term. Gowen Fld

Tue 9/8

8:20 am-4:30 pm

1 stop6h 10m

$458

KnoxvilleBoise

TYS - BOI

TYSBOI

Knoxville McGhee Tyson

Mon 4/20

2:45 pm-1:00 am

2 stops12h 15m

Boise Air Term. Gowen Fld

Mon 4/27

7:55 pm-12:00 pm

2 stops14h 05m

$462

KnoxvilleBoise

TYS - BOI

TYSBOI

Knoxville McGhee Tyson

Wed 9/2

7:00 am-2:50 pm

2 stops9h 50m

Boise Air Term. Gowen Fld

Tue 9/8

7:05 am-6:55 pm

2 stops9h 50m

$463

KnoxvilleBoise

TYS - BOI

TYSBOI

Knoxville McGhee Tyson

Mon 4/20

8:48 pm-12:49 pm

1 stop18h 01m

Boise Air Term. Gowen Fld

Mon 4/27

1:53 pm-11:56 pm

1 stop8h 03m

$466

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 May is, on average, the cheapest month to fly to Boise from Knoxville, with most prices found around $288. If you aren’t able to travel during the month of May, then book flights to Boise from Knoxville during April instead. Flights to Boise in April, while not as cheap as those in May, still average around $358.

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 49m

Direct flights

None
The fastest flight from Knoxville to Boise takes 6h 49m
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 49m, 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
7.1
11,492 reviews
Search American Airlines flights
DeltaPriceFrom $288Free CancellationRating
7.9
8,320 reviews
Search Delta flights
United AirlinesPriceFrom $358Free CancellationRating
7.4
9,469 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
Meridian
McCall
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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