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Cheap flights from Knoxville to Boise from $238

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 9/8. 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
0 bags

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Find the cheapest flights from Knoxville to Boise (TYS-BOI)

Cheap round-trip flights

Delta Logo
6:36 am - 2:01 pmTYS-BOI
9h 25m1 stop
Delta Logo
1:35 pm - 11:48 pmBOI-TYS
8h 13m1 stop
$289Delta
Find Deal
Tue, Aug 26 - Sat, Aug 30
Delta Logo
6:03 pm - 11:56 pmTYS-BOI
7h 53m1 stop
Delta Logo
12:45 pm - 11:48 pmBOI-TYS
9h 03m2 stops
$294Delta
Find Deal
Wed, Aug 27 - Wed, Sep 3
Delta Logo
5:45 am - 2:01 pmTYS-BOI
10h 16m2 stops
Delta Logo
10:51 am - 11:48 pmBOI-TYS
10h 57m2 stops
$299Delta
Find Deal
Wed, Aug 27 - Wed, Sep 3
Logo
1:32 pm - 8:31 pmTYS-BOI
8h 59m1 stop
Logo
2:16 pm - 6:10 pmBOI-TYS
25h 54m3 stops
$327
Find Deal
Fri, Sep 26 - Sun, Sep 28
Logo
1:32 pm - 8:31 pmTYS-BOI
8h 59m1 stop
Logo
2:16 pm - 4:37 pmBOI-TYS
24h 21m2 stops
$358
Find Deal
Fri, Sep 26 - Sun, Sep 28
United Airlines Logo
7:00 am - 11:31 amTYS-BOI
6h 31m1 stop
United Airlines Logo
7:00 am - 2:50 pmBOI-TYS
5h 50m1 stop
$364United Airlines
Find Deal
Wed, Aug 20 - Sun, Aug 24
United Airlines Logo
4:40 pm - 10:21 pmTYS-BOI
7h 41m1 stop
United Airlines Logo
7:00 am - 2:50 pmBOI-TYS
5h 50m1 stop
$379United Airlines
Find Deal
Sat, Aug 30 - Sun, Aug 31
American Airlines Logo
7:27 am - 4:45 pmTYS-BOI
11h 18m2 stops
American Airlines Logo
1:57 pm - 12:21 amBOI-TYS
8h 24m2 stops
$387American Airlines
Find Deal
Tue, Sep 2 - Tue, Sep 9
American Airlines Logo
5:30 am - 1:20 pmTYS-BOI
9h 50m2 stops
American Airlines Logo
7:00 am - 8:50 pmBOI-TYS
11h 50m2 stops
$414American Airlines
Find Deal
Sun, Aug 24 - Wed, Sep 3
Alaska Airlines Logo
5:30 am - 12:46 pmTYS-BOI
9h 16m1 stop
Alaska Airlines Logo
7:00 am - 5:49 pmBOI-TYS
8h 49m1 stop
$489Alaska Airlines
Find Deal
Sun, Aug 24 - Sun, Aug 31

Delta flights from Knoxville to Boise

Our best Delta deals on Knoxville to Boise flight tickets
Delta
Aug 26
TYS6:36 amKnoxville McGhee Tyson
9h 25m
1 stop
BOI2:01 pmBoise Air Term. Gowen Fld
Aug 30
BOI1:35 pmBoise Air Term. Gowen Fld
8h 13m
1 stop
TYS11:48 pmKnoxville McGhee Tyson
$289
Find similar
Delta
Aug 27
TYS6:03 pmKnoxville McGhee Tyson
7h 53m
1 stop
BOI11:56 pmBoise Air Term. Gowen Fld
Sep 3
BOI12:45 pmBoise Air Term. Gowen Fld
9h 03m
2 stops
TYS11:48 pmKnoxville McGhee Tyson
$294
Find similar
Delta
Aug 27
TYS5:45 amKnoxville McGhee Tyson
10h 16m
2 stops
BOI2:01 pmBoise Air Term. Gowen Fld
Sep 3
BOI10:51 amBoise Air Term. Gowen Fld
10h 57m
2 stops
TYS11:48 pmKnoxville McGhee Tyson
$299
Find similar

United Airlines flights from Knoxville to Boise

Our best United Airlines deals on Knoxville to Boise flight tickets
United Airlines
Aug 20
TYS7:00 amKnoxville McGhee Tyson
6h 31m
1 stop
BOI11:31 amBoise Air Term. Gowen Fld
Aug 24
BOI7:00 amBoise Air Term. Gowen Fld
5h 50m
1 stop
TYS2:50 pmKnoxville McGhee Tyson
$364
Find similar
United Airlines
Aug 30
TYS4:40 pmKnoxville McGhee Tyson
7h 41m
1 stop
BOI10:21 pmBoise Air Term. Gowen Fld
Aug 31
BOI7:00 amBoise Air Term. Gowen Fld
5h 50m
1 stop
TYS2:50 pmKnoxville McGhee Tyson
$379
Find similar
United Airlines
Aug 30
TYS2:00 pmKnoxville McGhee Tyson
10h 21m
2 stops
BOI10:21 pmBoise Air Term. Gowen Fld
Sep 2
BOI12:27 pmBoise Air Term. Gowen Fld
8h 18m
1 stop
TYS10:45 pmKnoxville McGhee Tyson
$384
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 August 7, 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

Tue 8/26

6:36 am-2:01 pm

1 stop9h 25m

Boise Air Term. Gowen Fld

Sat 8/30

1:35 pm-11:48 pm

1 stop8h 13m

$289

KnoxvilleBoise

TYS - BOI

TYSBOI

Knoxville McGhee Tyson

Wed 8/27

6:03 pm-11:56 pm

1 stop7h 53m

Boise Air Term. Gowen Fld

Wed 9/3

12:45 pm-11:48 pm

2 stops9h 03m

$294

KnoxvilleBoise

TYS - BOI

TYSBOI

Knoxville McGhee Tyson

Wed 8/27

5:45 am-2:01 pm

2 stops10h 16m

Boise Air Term. Gowen Fld

Wed 9/3

10:51 am-11:48 pm

2 stops10h 57m

$299

KnoxvilleBoise

TYS - BOI

TYSBOI

Knoxville McGhee Tyson

Fri 9/26

1:32 pm-8:31 pm

1 stop8h 59m

Boise Air Term. Gowen Fld

Sun 9/28

2:16 pm-6:10 pm

3 stops25h 54m

$327

KnoxvilleBoise

TYS - BOI

TYSBOI

Knoxville McGhee Tyson

Fri 9/26

1:32 pm-8:31 pm

1 stop8h 59m

Boise Air Term. Gowen Fld

Sun 9/28

2:16 pm-4:37 pm

2 stops24h 21m

$358

KnoxvilleBoise

TYS - BOI

TYSBOI

Knoxville McGhee Tyson

Wed 8/20

7:00 am-11:31 am

1 stop6h 31m

Boise Air Term. Gowen Fld

Sun 8/24

7:00 am-2:50 pm

1 stop5h 50m

$364

KnoxvilleBoise

TYS - BOI

TYSBOI

Knoxville McGhee Tyson

Sat 8/30

4:40 pm-10:21 pm

1 stop7h 41m

Boise Air Term. Gowen Fld

Sun 8/31

7:00 am-2:50 pm

1 stop5h 50m

$379

KnoxvilleBoise

TYS - BOI

TYSBOI

Knoxville McGhee Tyson

Tue 9/2

7:27 am-4:45 pm

2 stops11h 18m

Boise Air Term. Gowen Fld

Tue 9/9

1:57 pm-12:21 am

2 stops8h 24m

$387

KnoxvilleBoise

TYS - BOI

TYSBOI

Knoxville McGhee Tyson

Sun 8/24

5:30 am-1:20 pm

2 stops9h 50m

Boise Air Term. Gowen Fld

Wed 9/3

7:00 am-8:50 pm

2 stops11h 50m

$414

KnoxvilleBoise

TYS - BOI

TYSBOI

Knoxville McGhee Tyson

Sun 8/24

5:30 am-12:46 pm

1 stop9h 16m

Boise Air Term. Gowen Fld

Sun 8/31

7:00 am-5:49 pm

1 stop8h 49m

$489

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 14 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 $236. If you aren’t able to travel during the month of April, then book flights to Boise from Knoxville during September instead. Flights to Boise in September, while not as cheap as those in April, still average around $298.

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

Best Price Found

$238

Fastest flight time

6h 31m

Direct flights

None

Airports in Boise

1 airport
The best one-way flight to Boise from Knoxville in the past 72 hours is $238. The best round-trip flight deal from Knoxville to Boise found on momondo in the last 72 hours is $289.
The fastest flight from Knoxville to Boise takes 6h 31m
There are no direct flights from Knoxville to Boise. Popular non-direct route for this connection is Knoxville McGhee Tyson Airport - Boise Air Term. Gowen Fld Airport.
There is 1 airport near Boise: Boise Air Term. Gowen Fld (BOI)
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  • 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 31m, 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
8.0
7,985 reviews
Search Delta flights
United AirlinesPriceFrom $313Free CancellationRating
7.4
8,917 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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