What airlines fly to Idaho?

American Airlines, Delta and United Airlines are the top three most popular airlines that fly to Idaho from Knoxville according to our data. American Airlines is the first choice among our users, with 54% of people opting to fly with this airline when traveling to Idaho. Keep in mind that there are 3 different airlines that fly to Idaho on a routine basis, so you have a few additional options to choose from.

What is the cheapest airline that flies from Knoxville McGhee Tyson to Idaho?

American Airlines, United Airlines, and Allegiant Air are the most popular carriers operating from Knoxville McGhee Tyson to Idaho

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

Prices for flights from Knoxville McGhee Tyson Airport to Idaho are updated daily.

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

There are 3 operators available for flights from Knoxville McGhee Tyson Airport to Idaho as of October 2025.

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

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Knoxville McGhee Tyson Airport to Idaho.

What documentation or ID do you need to fly to Idaho?

The travel and health documents required for your trip to Idaho can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Idaho. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

$142 Cheap Flights from Knoxville to Idaho in 2025/26

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Find the cheapest flights from Knoxville to Idaho

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Cheap round-trip flights

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2:21 pm - 9:49 pmTYS-IDA

9h 28m1 stop

12:55 pm - 9:43 pmIDA-TYS

6h 48m1 stop

$289American Airlines

Find Deal

Thu, Oct 23 - Tue, Oct 28

5:35 am - 12:34 pmTYS-IDA

8h 59m2 stops

6:57 pm - 9:37 amIDA-TYS

12h 40m2 stops

$299Delta

Find Deal

Wed, Nov 12 - Sun, Nov 16

4:55 pm - 8:37 pmTYS-JAC

5h 42m1 stop

7:00 am - 3:51 pmJAC-TYS

6h 51m1 stop

$309United Airlines

Find Deal

Wed, Nov 12 - Sun, Nov 16

4:40 pm - 10:49 pmTYS-IDA

8h 09m1 stop

2:45 pm - 10:30 pmIDA-TYS

5h 45m1 stop

$314United Airlines

Find Deal

Wed, Oct 22 - Tue, Oct 28

9:40 am - 8:37 pmTYS-JAC

12h 57m2 stops

2:49 pm - 10:30 pmJAC-TYS

5h 41m1 stop

$314United Airlines

Find Deal

Sat, Dec 6 - Sat, Dec 13

4:40 pm - 10:49 pmTYS-IDA

8h 09m1 stop

10:50 am - 11:59 pmIDA-TYS

11h 09m2 stops

$319United Airlines

Find Deal

Wed, Oct 22 - Tue, Oct 28

6:40 am - 1:05 pmTYS-GEG

9h 25m1 stop

2:17 pm - 10:55 pmGEG-TYS

5h 38m1 stop

$389Delta

Find Deal

Sat, Nov 1 - Tue, Nov 4

2:21 pm - 9:49 pmTYS-IDA

9h 28m1 stop

12:55 pm - 9:03 pmIDA-TYS

6h 08m1 stop

$429American Airlines

Find Deal

Fri, Oct 17 - Wed, Oct 22

4:27 pm - 10:29 amTYS-BOI

20h 02m2 stops

8:50 pm - 9:03 pmBOI-TYS

22h 13m2 stops

$532Alaska Airlines

Find Deal

Tue, Nov 4 - Thu, Nov 13

4:29 pm - 8:19 amTYS-GEG

18h 50m2 stops

5:00 am - 11:45 pmGEG-TYS

15h 45m2 stops

$624Alaska Airlines

Find Deal

Tue, Dec 23 - Mon, Dec 29

American Airlines flights from Knoxville to Idaho

Our best American Airlines deals on Knoxville to Idaho flight tickets

American Airlines

Oct 23

TYS2:21 pmKnoxville McGhee Tyson

9h 28m

1 stop

IDA9:49 pmIdaho Falls Fanning Field

Oct 28

IDA12:55 pmIdaho Falls Fanning Field

6h 48m

1 stop

TYS9:43 pmKnoxville McGhee Tyson

$289

Find similar

American Airlines

Oct 17

TYS2:21 pmKnoxville McGhee Tyson

9h 28m

1 stop

IDA9:49 pmIdaho Falls Fanning Field

Oct 22

IDA12:55 pmIdaho Falls Fanning Field

6h 08m

1 stop

TYS9:03 pmKnoxville McGhee Tyson

$429

Find similar

American Airlines

Nov 7

TYS6:16 pmKnoxville McGhee Tyson

20h 50m

1 stop

BOI1:06 pmBoise Air Term. Gowen Fld

Nov 15

BOI1:40 pmBoise Air Term. Gowen Fld

20h 50m

1 stop

TYS12:30 pmKnoxville McGhee Tyson

$430

Find similar

Delta flights from Knoxville to Idaho

Our best Delta deals on Knoxville to Idaho flight tickets

Delta

Nov 12

TYS5:35 amKnoxville McGhee Tyson

8h 59m

2 stops

IDA12:34 pmIdaho Falls Fanning Field

Nov 16

IDA6:57 pmIdaho Falls Fanning Field

12h 40m

2 stops

TYS9:37 amKnoxville McGhee Tyson

$299

Find similar

Delta

Feb 21

TYS6:45 amKnoxville McGhee Tyson

9h 24m

1 stop

BOI2:09 pmBoise Air Term. Gowen Fld

Feb 24

BOI3:00 pmBoise Air Term. Gowen Fld

6h 00m

1 stop

TYS11:00 pmKnoxville McGhee Tyson

$389

Find similar

Delta

Feb 21

TYS6:45 amKnoxville McGhee Tyson

9h 24m

1 stop

BOI2:09 pmBoise Air Term. Gowen Fld

Feb 24

BOI10:38 amBoise Air Term. Gowen Fld

10h 22m

2 stops

TYS11:00 pmKnoxville McGhee Tyson

$394

Find similar

Fly from

Fly to

Route

Depart

Return

Price

KnoxvilleIdaho Falls

TYS - IDA

TYSIDA

Knoxville McGhee Tyson

Thu 10/23

2:21 pm-9:49 pm

1 stop9h 28m

Idaho Falls Fanning Field

Tue 10/28

12:55 pm-9:43 pm

1 stop6h 48m

$289

KnoxvilleIdaho Falls

TYS - IDA

TYSIDA

Knoxville McGhee Tyson

Wed 11/12

5:35 am-12:34 pm

2 stops8h 59m

Idaho Falls Fanning Field

Sun 11/16

6:57 pm-9:37 am

2 stops12h 40m

$299

KnoxvilleJackson

TYS - JAC

TYSJAC

Knoxville McGhee Tyson

Wed 11/12

4:55 pm-8:37 pm

1 stop5h 42m

Jackson Hole

Sun 11/16

7:00 am-3:51 pm

1 stop6h 51m

$309

KnoxvilleIdaho Falls

TYS - IDA

TYSIDA

Knoxville McGhee Tyson

Wed 10/22

4:40 pm-10:49 pm

1 stop8h 09m

Idaho Falls Fanning Field

Tue 10/28

2:45 pm-10:30 pm

1 stop5h 45m

$314

KnoxvilleJackson

TYS - JAC

TYSJAC

Knoxville McGhee Tyson

Sat 12/6

9:40 am-8:37 pm

2 stops12h 57m

Jackson Hole

Sat 12/13

2:49 pm-10:30 pm

1 stop5h 41m

$314

KnoxvilleIdaho Falls

TYS - IDA

TYSIDA

Knoxville McGhee Tyson

Wed 10/22

4:40 pm-10:49 pm

1 stop8h 09m

Idaho Falls Fanning Field

Tue 10/28

10:50 am-11:59 pm

2 stops11h 09m

$319

KnoxvilleSpokane

TYS - GEG

TYSGEG

Knoxville McGhee Tyson

Sat 11/1

6:40 am-1:05 pm

1 stop9h 25m

Spokane

Tue 11/4

2:17 pm-10:55 pm

1 stop5h 38m

$389

KnoxvilleIdaho Falls

TYS - IDA

TYSIDA

Knoxville McGhee Tyson

Fri 10/17

2:21 pm-9:49 pm

1 stop9h 28m

Idaho Falls Fanning Field

Wed 10/22

12:55 pm-9:03 pm

1 stop6h 08m

$429

KnoxvilleBoise

TYS - BOI

TYSBOI

Knoxville McGhee Tyson

Tue 11/4

4:27 pm-10:29 am

2 stops20h 02m

Boise Air Term. Gowen Fld

Thu 11/13

8:50 pm-9:03 pm

2 stops22h 13m

$532

KnoxvilleSpokane

TYS - GEG

TYSGEG

Knoxville McGhee Tyson

Tue 12/23

4:29 pm-8:19 am

2 stops18h 50m

Spokane

Mon 12/29

5:00 am-11:45 pm

2 stops15h 45m

$624

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Knoxville to Idaho

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

Prices

Airlines

What is the cheapest month to fly to Idaho?

In general, April is the cheapest month to fly from Knoxville to Idaho. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $249. If you don’t want to visit Idaho in April, then you should wait until January to fly from Knoxville, when ticket prices are also cheap, with an average price of $341.

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

Our data shows that Friday is the least expensive day to fly to Idaho. Tickets to fly out on this day can be as low as $377. On the other hand, Monday is the most expensive day to depart from Knoxville because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $756.

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

According to our data, the cheapest time of day to fly to Idaho is in the morning. momondo users have found flights departing from Knoxville to Idaho in the morning for as low as $498. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. In the afternoon is when there is more demand to fly to Idaho, so prices are often more expensive at around $546 per ticket.

Cheap Knoxville to Idaho flight deals and tips

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

Direct flights	None

There are no direct flights from Knoxville to Idaho. There are no popular flight routes from Knoxville to Idaho.

Search flight deals

When did momondo last update prices for flights from Knoxville McGhee Tyson Airport to Idaho?
Prices for flights from Knoxville McGhee Tyson Airport to Idaho are updated daily.
How many operators does momondo search for flights from Knoxville McGhee Tyson Airport to Idaho?
There are 3 operators available for flights from Knoxville McGhee Tyson Airport to Idaho as of October 2025.
How old do you have to be to fly from Knoxville McGhee Tyson Airport to Idaho?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Knoxville McGhee Tyson Airport to Idaho.
What documentation or ID do you need to fly to Idaho?
The travel and health documents required for your trip to Idaho can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Idaho. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Best airlines flying from Knoxville to Idaho

Compare and see reviews for airlines that fly from Knoxville to Idaho with momondo

Airline	Rating	Free Cancellation	Price
American Airlines	PriceFrom $172	Free Cancellation	Rating 7.2 10,000 reviews	Search American Airlines flights
Delta	PriceFrom $269	Free Cancellation	Rating 7.9 7,962 reviews	Search Delta flights
United Airlines	PriceFrom $313	Free Cancellation	Rating 7.4 8,933 reviews	Search United Airlines flights

Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Knoxville to Idaho. momondo saves you time and could save you money on your trip.

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

Yes. momondo enables you to select and highlight flights to Idaho from Knoxville with this policy.

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

momondo provides multiple filters to help you find the best flight to Idaho from Knoxville. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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

Of course. momondo tracks the price of Knoxville to Idaho flights. All you need is a valid email address and we will do the rest; it is that quick and easy.