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Cheap flights from Idaho to Knoxville from $166

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 9/21. 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 Idaho to Knoxville

Cheap round-trip flights

American Airlines Logo
1:38 pm - 12:21 amBOI-TYS
8h 43m1 stop
American Airlines Logo
4:37 pm - 9:48 pmTYS-BOI
7h 11m1 stop
$289American Airlines
Find Deal
Tue, Sep 9 - Tue, Sep 16
American Airlines Logo
12:35 pm - 12:21 amGEG-TYS
8h 46m1 stop
American Airlines Logo
6:00 am - 11:45 amTYS-GEG
8h 45m1 stop
$289American Airlines
Find Deal
Wed, Sep 17 - Fri, Sep 26
American Airlines Logo
12:55 pm - 9:43 pmIDA-TYS
6h 48m1 stop
American Airlines Logo
7:05 am - 12:25 pmTYS-IDA
7h 20m1 stop
$289American Airlines
Find Deal
Tue, Oct 21 - Sat, Oct 25
Delta Logo
2:23 pm - 11:36 pmGEG-TYS
6h 13m1 stop
Delta Logo
7:49 am - 6:40 pmTYS-GEG
13h 51m2 stops
$294Delta
Find Deal
Mon, Sep 22 - Sat, Sep 27
Delta Logo
7:05 pm - 9:44 amGEG-TYS
11h 39m2 stops
Delta Logo
5:45 am - 1:17 pmTYS-GEG
10h 32m2 stops
$299Delta
Find Deal
Mon, Sep 22 - Sat, Sep 27
United Airlines Logo
12:27 pm - 10:45 pmBOI-TYS
8h 18m1 stop
United Airlines Logo
7:00 am - 11:31 amTYS-BOI
6h 31m1 stop
$304United Airlines
Find Deal
Tue, Sep 16 - Sun, Sep 21
United Airlines Logo
2:50 pm - 10:30 pmJAC-TYS
5h 40m1 stop
United Airlines Logo
4:40 pm - 8:39 pmTYS-JAC
5h 59m1 stop
$339United Airlines
Find Deal
Thu, Aug 21 - Mon, Aug 25
Alaska Airlines Logo
1:34 pm - 12:21 amBOI-TYS
8h 47m1 stop
Alaska Airlines Logo
5:46 am - 12:32 pmTYS-BOI
8h 46m1 stop
$379Alaska Airlines
Find Deal
Thu, Dec 11 - Sat, Dec 13
Alaska Airlines Logo
9:58 am - 12:23 amBOI-TYS
12h 25m2 stops
Alaska Airlines Logo
5:10 am - 3:12 pmTYS-BOI
12h 02m2 stops
$389Alaska Airlines
Find Deal
Sat, Oct 25 - Tue, Nov 4
Logo
2:16 pm - 11:55 amBOI-TYS
19h 39m2 stops
Logo
5:38 pm - 8:03 pmTYS-BOI
28h 25m3 stops
$647
Find Deal
Sun, Oct 26 - Sun, Nov 2

American Airlines flights from Idaho to Knoxville

Our best American Airlines deals on Idaho to Knoxville flight tickets
American Airlines
Oct 21
IDA12:55 pmIdaho Falls Fanning Field
6h 48m
1 stop
TYS9:43 pmKnoxville McGhee Tyson
Oct 25
TYS7:05 amKnoxville McGhee Tyson
7h 20m
1 stop
IDA12:25 pmIdaho Falls Fanning Field
$289
Find similar
American Airlines
Sep 9
BOI1:57 pmBoise Air Term. Gowen Fld
8h 24m
2 stops
TYS12:21 amKnoxville McGhee Tyson
Sep 16
TYS6:00 amKnoxville McGhee Tyson
8h 48m
1 stop
BOI12:48 pmBoise Air Term. Gowen Fld
$294
Find similar
American Airlines
Dec 11
BOI1:20 pmBoise Air Term. Gowen Fld
8h 45m
2 stops
TYS12:05 amKnoxville McGhee Tyson
Dec 13
TYS2:21 pmKnoxville McGhee Tyson
11h 16m
2 stops
BOI11:37 pmBoise Air Term. Gowen Fld
$299
Find similar

Delta flights from Idaho to Knoxville

Our best Delta deals on Idaho to Knoxville flight tickets
Delta
Sep 22
GEG2:23 pmSpokane
6h 13m
1 stop
TYS11:36 pmKnoxville McGhee Tyson
Sep 27
TYS7:49 amKnoxville McGhee Tyson
13h 51m
2 stops
GEG6:40 pmSpokane
$294
Find similar
Delta
Oct 21
IDA6:53 pmIdaho Falls Fanning Field
12h 07m
2 stops
TYS9:00 amKnoxville McGhee Tyson
Oct 25
TYS12:47 pmKnoxville McGhee Tyson
11h 43m
2 stops
IDA10:30 pmIdaho Falls Fanning Field
$299
Find similar
Delta
Aug 21
GEG2:21 pmSpokane
6h 34m
1 stop
TYS11:55 pmKnoxville McGhee Tyson
Aug 31
TYS5:45 amKnoxville McGhee Tyson
8h 50m
1 stop
GEG11:35 amSpokane
$314
Find similar

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 August 7, 2025.
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

BoiseKnoxville

BOI - TYS

BOITYS

Boise Air Term. Gowen Fld

Tue 9/9

1:38 pm-12:21 am

1 stop8h 43m

Knoxville McGhee Tyson

Tue 9/16

4:37 pm-9:48 pm

1 stop7h 11m

$289

SpokaneKnoxville

GEG - TYS

GEGTYS

Spokane

Wed 9/17

12:35 pm-12:21 am

1 stop8h 46m

Knoxville McGhee Tyson

Fri 9/26

6:00 am-11:45 am

1 stop8h 45m

$289

Idaho FallsKnoxville

IDA - TYS

IDATYS

Idaho Falls Fanning Field

Tue 10/21

12:55 pm-9:43 pm

1 stop6h 48m

Knoxville McGhee Tyson

Sat 10/25

7:05 am-12:25 pm

1 stop7h 20m

$289

SpokaneKnoxville

GEG - TYS

GEGTYS

Spokane

Mon 9/22

2:23 pm-11:36 pm

1 stop6h 13m

Knoxville McGhee Tyson

Sat 9/27

7:49 am-6:40 pm

2 stops13h 51m

$294

SpokaneKnoxville

GEG - TYS

GEGTYS

Spokane

Mon 9/22

7:05 pm-9:44 am

2 stops11h 39m

Knoxville McGhee Tyson

Sat 9/27

5:45 am-1:17 pm

2 stops10h 32m

$299

BoiseKnoxville

BOI - TYS

BOITYS

Boise Air Term. Gowen Fld

Tue 9/16

12:27 pm-10:45 pm

1 stop8h 18m

Knoxville McGhee Tyson

Sun 9/21

7:00 am-11:31 am

1 stop6h 31m

$304

JacksonKnoxville

JAC - TYS

JACTYS

Jackson Hole

Thu 8/21

2:50 pm-10:30 pm

1 stop5h 40m

Knoxville McGhee Tyson

Mon 8/25

4:40 pm-8:39 pm

1 stop5h 59m

$339

BoiseKnoxville

BOI - TYS

BOITYS

Boise Air Term. Gowen Fld

Thu 12/11

1:34 pm-12:21 am

1 stop8h 47m

Knoxville McGhee Tyson

Sat 12/13

5:46 am-12:32 pm

1 stop8h 46m

$379

BoiseKnoxville

BOI - TYS

BOITYS

Boise Air Term. Gowen Fld

Sat 10/25

9:58 am-12:23 am

2 stops12h 25m

Knoxville McGhee Tyson

Tue 11/4

5:10 am-3:12 pm

2 stops12h 02m

$389

BoiseKnoxville

BOI - TYS

BOITYS

Boise Air Term. Gowen Fld

Sun 10/26

2:16 pm-11:55 am

2 stops19h 39m

Knoxville McGhee Tyson

Sun 11/2

5:38 pm-8:03 pm

3 stops28h 25m

$647

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 April is, on average, the cheapest month to fly to Knoxville from Idaho, with most prices found around $313. If you aren’t able to travel during the month of April, then book flights to Knoxville from Idaho during February instead. Flights to Knoxville in February, while not as cheap as those in April, still average around $328.

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

The cheapest day to depart from Idaho to Knoxville is on a Tuesday. Travelers who choose to depart for Knoxville on a Tuesday will often find tickets for as low as $432. When flying out on a Sunday, the most expensive travel day of the week, you can expect to see flight prices from Idaho to Knoxville for around $701.

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

In the evening is the cheapest time of day to fly from Idaho to Knoxville when you can find flight prices for as low as $368. Flying to Knoxville in the evening is an ideal time because this is during off-peak travel hours. In contrast, the most expensive time of day to depart to Knoxville is in the morning when prices are around $600.

How far in advance should I book a flight to Knoxville?

You are more likely to see cheaper flights to Knoxville from Idaho when booking weeks ahead of your departure date. In general, you can expect to find flights to Knoxville for around $506 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Knoxville from Idaho for as low as $288 on momondo.

Cheap Idaho to Knoxville flight deals and tips

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

Best Price Found

$166

Fastest flight time

5h 40m

Direct flights

None

Airports in Knoxville

1 airport
The best one-way flight to Knoxville from Idaho in the past 72 hours is $166. The best round-trip flight deal from Idaho to Knoxville found on momondo in the last 72 hours is $289.
The fastest flight from Idaho to Knoxville takes 5h 40m
There are no direct flights from Idaho to Knoxville. Popular non-direct routes for this connection are Idaho Falls Fanning Field Airport - Knoxville McGhee Tyson Airport, Spokane Airport - Knoxville McGhee Tyson Airport and Boise Air Term. Gowen Fld Airport - Knoxville McGhee Tyson Airport.
There is 1 airport near Knoxville: Knoxville McGhee Tyson (TYS)
Search flight deals

  • 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 $258Free 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
Alaska AirlinesPriceFrom $379Free CancellationRating
8.0
10,000 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
Crossville
Maryville
Murphy
Newport
Alcoa
Lenoir City
Oak Ridge
Kodak
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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