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Cheap flights from Idaho to Knoxville from $167

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Idaho to Knoxville departing on 6/23. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from Idaho to Knoxville

Cheap round-trip flights

Enter your travel dates to find the best prices.
Delta Logo
11:10 pm - 9:36 am
BOI
-
TYS
8h 26m
1 stop
Delta Logo
5:40 am - 12:53 pm
TYS
-
BOI
9h 13m
1 stop
$375Delta
Wed, Jul 15 - Tue, Jul 21
United Airlines Logo
2:44 pm - 10:29 pm
BOI
-
TYS
5h 45m
1 stop
United Airlines Logo
7:00 am - 3:31 pm
TYS
-
BOI
10h 31m
2 stops
$380United Airlines
Wed, Aug 19 - Tue, Aug 25
American Airlines Logo
8:01 am - 11:18 pm
BOI
-
TYS
13h 17m
2 stops
American Airlines Logo
1:56 pm - 10:40 pm
TYS
-
BOI
10h 44m
2 stops
$386American Airlines
Wed, Aug 19 - Tue, Aug 25
Delta Logo
10:50 pm - 9:39 am
GEG
-
TYS
7h 49m
1 stop
Delta Logo
5:30 am - 11:38 am
TYS
-
GEG
9h 08m
1 stop
$389Delta
Thu, Oct 1 - Tue, Oct 6
Delta Logo
5:20 am - 8:07 pm
GEG
-
TYS
11h 47m
2 stops
Delta Logo
5:30 am - 11:38 am
TYS
-
GEG
9h 08m
1 stop
$394Delta
Thu, Oct 1 - Tue, Oct 6
Delta Logo
2:05 pm - 11:00 pm
GEG
-
TYS
5h 55m
1 stop
Delta Logo
6:15 pm - 11:09 pm
TYS
-
GEG
7h 54m
1 stop
$395Delta
Tue, Aug 25 - Wed, Sep 2
Southwest Logo
8:20 am - 3:35 pm
BOI
-
TYS
5h 15m
1 stop
Southwest Logo
5:20 pm - 9:50 pm
TYS
-
BOI
6h 30m
1 stop
$403Southwest
Sat, Oct 17 - Sat, Oct 24
Southwest Logo
8:20 am - 3:35 pm
BOI
-
TYS
5h 15m
1 stop
Southwest Logo
1:30 pm - 9:50 pm
TYS
-
BOI
10h 20m
2 stops
$408Southwest
Sat, Oct 17 - Sat, Oct 24
American Airlines Logo
2:20 pm - 11:18 pm
IDA
-
TYS
6h 58m
1 stop
American Airlines Logo
1:53 pm - 9:20 pm
TYS
-
IDA
9h 27m
1 stop
$480American Airlines
Fri, Aug 14 - Sat, Aug 22
Multiple Airlines Logo
9:45 am - 10:56 pm
IDA
-
TYS
11h 11m
1 stop
Multiple Airlines Logo
10:05 pm - 6:44 pm
TYS
-
IDA
22h 39m
2 stops
$655Multiple Airlines
Thu, Jul 2 - Mon, Jul 6

Southwest flights from Idaho to Knoxville

Our best Southwest deals on Idaho to Knoxville flight tickets
Southwest
Oct 17
BOI8:20 amBoise Air Term. Gowen Fld
5h 15m
1 stop
TYS3:35 pmKnoxville McGhee Tyson
Oct 24
TYS5:20 pmKnoxville McGhee Tyson
6h 30m
1 stop
BOI9:50 pmBoise Air Term. Gowen Fld
$403
Southwest
Oct 17
BOI8:20 amBoise Air Term. Gowen Fld
5h 15m
1 stop
TYS3:35 pmKnoxville McGhee Tyson
Oct 24
TYS1:30 pmKnoxville McGhee Tyson
10h 20m
2 stops
BOI9:50 pmBoise Air Term. Gowen Fld
$408
Southwest
Oct 17
BOI5:35 amBoise Air Term. Gowen Fld
9h 05m
2 stops
TYS4:40 pmKnoxville McGhee Tyson
Oct 24
TYS1:30 pmKnoxville McGhee Tyson
10h 20m
2 stops
BOI9:50 pmBoise Air Term. Gowen Fld
$413

Delta flights from Idaho to Knoxville

Our best Delta deals on Idaho to Knoxville flight tickets
Delta
Jul 15
BOI11:10 pmBoise Air Term. Gowen Fld
8h 26m
1 stop
TYS9:36 amKnoxville McGhee Tyson
Jul 21
TYS5:40 amKnoxville McGhee Tyson
9h 13m
1 stop
BOI12:53 pmBoise Air Term. Gowen Fld
$375
Delta
Oct 1
GEG10:50 pmSpokane
7h 49m
1 stop
TYS9:39 amKnoxville McGhee Tyson
Oct 6
TYS5:30 amKnoxville McGhee Tyson
9h 08m
1 stop
GEG11:38 amSpokane
$389
Delta
Oct 1
GEG5:20 amSpokane
11h 47m
2 stops
TYS8:07 pmKnoxville McGhee Tyson
Oct 6
TYS5:30 amKnoxville McGhee Tyson
9h 08m
1 stop
GEG11:38 amSpokane
$394

momondo Fare Finder

 
Customize your flight search to find flights from Idaho 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, momondo users made 832,500 searches. Data last updated May 29, 2026.
Use the filters below to find and compare flights from Idaho to Knoxville that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

BoiseKnoxville

BOI - TYS

BOITYS

Boise Air Term. Gowen Fld

Wed 7/15

11:10 pm-9:36 am

1 stop8h 26m

Knoxville McGhee Tyson

Tue 7/21

5:40 am-12:53 pm

1 stop9h 13m

$375

BoiseKnoxville

BOI - TYS

BOITYS

Boise Air Term. Gowen Fld

Wed 8/19

2:44 pm-10:29 pm

1 stop5h 45m

Knoxville McGhee Tyson

Tue 8/25

7:00 am-3:31 pm

2 stops10h 31m

$380

BoiseKnoxville

BOI - TYS

BOITYS

Boise Air Term. Gowen Fld

Wed 8/19

8:01 am-11:18 pm

2 stops13h 17m

Knoxville McGhee Tyson

Tue 8/25

1:56 pm-10:40 pm

2 stops10h 44m

$386

SpokaneKnoxville

GEG - TYS

GEGTYS

Spokane

Thu 10/1

10:50 pm-9:39 am

1 stop7h 49m

Knoxville McGhee Tyson

Tue 10/6

5:30 am-11:38 am

1 stop9h 08m

$389

SpokaneKnoxville

GEG - TYS

GEGTYS

Spokane

Thu 10/1

5:20 am-8:07 pm

2 stops11h 47m

Knoxville McGhee Tyson

Tue 10/6

5:30 am-11:38 am

1 stop9h 08m

$394

SpokaneKnoxville

GEG - TYS

GEGTYS

Spokane

Tue 8/25

2:05 pm-11:00 pm

1 stop5h 55m

Knoxville McGhee Tyson

Wed 9/2

6:15 pm-11:09 pm

1 stop7h 54m

$395
Quickest round-trip

BoiseKnoxville

BOI - TYS

BOITYS

Boise Air Term. Gowen Fld

Sat 10/17

8:20 am-3:35 pm

1 stop5h 15m

Knoxville McGhee Tyson

Sat 10/24

5:20 pm-9:50 pm

1 stop6h 30m

$403

BoiseKnoxville

BOI - TYS

BOITYS

Boise Air Term. Gowen Fld

Sat 10/17

8:20 am-3:35 pm

1 stop5h 15m

Knoxville McGhee Tyson

Sat 10/24

1:30 pm-9:50 pm

2 stops10h 20m

$408

Idaho FallsKnoxville

IDA - TYS

IDATYS

Idaho Falls Fanning Field

Fri 8/14

2:20 pm-11:18 pm

1 stop6h 58m

Knoxville McGhee Tyson

Sat 8/22

1:53 pm-9:20 pm

1 stop9h 27m

$480

Idaho FallsKnoxville

IDA - TYS

IDATYS

Idaho Falls Fanning Field

Thu 7/2

9:45 am-10:56 pm

1 stop11h 11m

Knoxville McGhee Tyson

Mon 7/6

10:05 pm-6:44 pm

2 stops22h 39m

$655

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 Knoxville from

How to get the cheapest flight ticket from Idaho to Knoxville

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 Knoxville?

The month of February is, on average, the cheapest month to fly to Knoxville from Idaho, with most prices found around $170. If you aren’t able to travel during the month of February, then book flights to Knoxville from Idaho during November instead. Flights to Knoxville in November, while not as cheap as those in February, still average around $288.

Can stopping save me money on Idaho to Knoxville flights?

You could potentially save up to 16% on your flight if you consider stops on a Idaho to Knoxville flight.

Cheap Idaho to Knoxville flight deals and tips

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

Fastest flight time

5h 36m

Direct flights

None
The fastest flight from Idaho to Knoxville takes 5h 36m
There are no direct flights from Idaho to Knoxville. There are no popular flight routes from Idaho to Knoxville.
Search flight deals

Frequently asked questions about flying from Idaho to Knoxville

  • When did momondo last update prices for flights from Idaho to Knoxville McGhee Tyson Airport?

    Prices for flights from Idaho to Knoxville McGhee Tyson Airport are refreshed on a daily basis.

  • How many operators does momondo search for flights from Idaho to Knoxville McGhee Tyson Airport?

  • How old do you have to be to fly from Idaho to Knoxville McGhee Tyson Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Idaho to Knoxville McGhee Tyson Airport.

  • What documentation or ID do you need to fly to Knoxville McGhee Tyson Airport?

    The necessary travel and health documents for your Knoxville McGhee Tyson 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.

Best airlines flying from Idaho to Knoxville

Compare and see reviews for airlines that fly from Idaho to Knoxville with momondo
Airline
Rating
Free Cancellation
Price
American AirlinesPriceFrom $288Free CancellationRating
7.1
11,644 reviews
Search American Airlines flights
United AirlinesPriceFrom $358Free CancellationRating
7.4
9,764 reviews
Search United Airlines flights
DeltaPriceFrom $388Free CancellationRating
7.9
8,419 reviews
Search Delta flights
Alaska AirlinesPriceFrom $625Free CancellationRating
7.9
12,432 reviews
Search Alaska Airlines flights

Traveling to a place near Knoxville?

Book flights to Knoxville if you plan to visit one of these locations
Pigeon Forge
Gatlinburg
Cherokee
Bryson City
Morristown
Corbin
Alcoa
Maryville
Crossville
Murphy
Oak Ridge
Kodak
Newport
Lenoir City
Dandridge
Clinton
Jefferson City
Rockford

Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Idaho to Knoxville. Millions of users trust and use momondo every year so you are in good hands.

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

Yes. momondo allows you to filter the results for Idaho to Knoxville flights to just show those with flexible booking policies.

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

Once you have performed a search for Idaho to Knoxville flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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

If you are not ready to book a flight from Idaho to Knoxville now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Knoxville and let you know when they change.

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