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

Frontier, American Airlines, and Delta are the most popular carriers operating from Knoxville McGhee Tyson to Idaho

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 48% 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.

How many flights depart from Knoxville to Idaho on average per week?

As of April 2026, 1 flights take off from Knoxville and land in Idaho each week. The most common flight departure day for this route is Sat, with 100% of weekly flights taking off on this day.

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 April 2026.

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.

$140 Cheap Flights from Knoxville to Idaho in 2026

1 adult

0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Knoxville to Idaho

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

8:32 pm - 12:30 pm

TYS

BOI

17h 58m

1 stop

1:25 pm - 7:37 pm

BOI

TYS

28h 12m

1 stop

$382Frontier

Wed, Jun 24 - Sun, Jun 28

8:32 pm - 12:30 pm

TYS

BOI

17h 58m

1 stop

1:25 pm - 7:37 pm

BOI

TYS

28h 12m

1 stop

$385Frontier

Wed, Jun 24 - Sun, Jun 28

7:19 am - 12:02 pm

TYS

GEG

7h 43m

1 stop

12:45 pm - 11:18 pm

GEG

TYS

7h 33m

1 stop

$402American Airlines

Tue, Sep 1 - Sat, Sep 12

7:19 am - 12:02 pm

TYS

GEG

7h 43m

1 stop

6:30 am - 9:54 pm

GEG

TYS

12h 24m

2 stops

$407American Airlines

Tue, Sep 1 - Sat, Sep 12

1:55 pm - 10:25 pm

TYS

GEG

11h 30m

2 stops

6:15 am - 6:55 pm

GEG

TYS

9h 40m

2 stops

$412Southwest

Wed, Aug 5 - Tue, Aug 11

3:00 pm - 10:25 pm

TYS

GEG

10h 25m

1 stop

6:15 am - 6:55 pm

GEG

TYS

9h 40m

2 stops

$413Southwest

Wed, Aug 5 - Tue, Aug 11

4:00 pm - 11:35 pm

TYS

GEG

10h 35m

2 stops

5:00 pm - 9:11 am

GEG

TYS

13h 11m

2 stops

$427Delta

Tue, Sep 1 - Sat, Sep 12

4:56 pm - 8:58 pm

TYS

JAC

6h 02m

1 stop

1:42 pm - 12:30 am

JAC

TYS

8h 48m

2 stops

$431United Airlines

Tue, May 26 - Tue, Jun 2

4:00 pm - 11:35 pm

TYS

GEG

10h 35m

2 stops

5:00 pm - 9:11 am

GEG

TYS

13h 11m

2 stops

$436Delta

Tue, Sep 1 - Sat, Sep 12

4:56 pm - 9:02 pm

TYS

JAC

6h 06m

1 stop

8:40 am - 4:59 pm

JAC

TYS

6h 19m

1 stop

$484United Airlines

Fri, Aug 14 - Mon, Aug 24

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Frontier flights from Knoxville to Idaho

Our best Frontier deals on Knoxville to Idaho flight tickets

Frontier

Jun 24

TYS8:32 pmKnoxville McGhee Tyson

17h 58m

1 stop

BOI12:30 pmBoise Air Term. Gowen Fld

Jun 28

BOI1:25 pmBoise Air Term. Gowen Fld

28h 12m

1 stop

TYS7:37 pmKnoxville McGhee Tyson

$382

Frontier

Jun 24

TYS8:32 pmKnoxville McGhee Tyson

17h 58m

1 stop

BOI12:30 pmBoise Air Term. Gowen Fld

Jun 28

BOI1:25 pmBoise Air Term. Gowen Fld

28h 12m

1 stop

TYS7:37 pmKnoxville McGhee Tyson

$385

Delta flights from Knoxville to Idaho

Our best Delta deals on Knoxville to Idaho flight tickets

Delta

Sep 1

TYS4:00 pmKnoxville McGhee Tyson

10h 35m

2 stops

GEG11:35 pmSpokane

Sep 12

GEG5:00 pmSpokane

13h 11m

2 stops

TYS9:11 amKnoxville McGhee Tyson

$427

Delta

Sep 1

TYS4:00 pmKnoxville McGhee Tyson

10h 35m

2 stops

GEG11:35 pmSpokane

Sep 12

GEG5:00 pmSpokane

13h 11m

2 stops

TYS9:11 amKnoxville McGhee Tyson

$436

Delta

Sep 30

TYS6:15 pmKnoxville McGhee Tyson

7h 14m

1 stop

BOI11:29 pmBoise Air Term. Gowen Fld

Oct 3

BOI3:25 pmBoise Air Term. Gowen Fld

5h 31m

1 stop

TYS10:56 pmKnoxville McGhee Tyson

$443

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

KnoxvilleBoise

TYS - BOI

TYSBOI

Knoxville McGhee Tyson

Wed 6/24

8:32 pm-12:30 pm

1 stop17h 58m

Boise Air Term. Gowen Fld

Sun 6/28

1:25 pm-7:37 pm

1 stop28h 12m

$382

KnoxvilleBoise

TYS - BOI

TYSBOI

Knoxville McGhee Tyson

Wed 6/24

8:32 pm-12:30 pm

1 stop17h 58m

Boise Air Term. Gowen Fld

Sun 6/28

1:25 pm-7:37 pm

1 stop28h 12m

$385

KnoxvilleSpokane

TYS - GEG

TYSGEG

Knoxville McGhee Tyson

Tue 9/1

7:19 am-12:02 pm

1 stop7h 43m

Spokane

Sat 9/12

12:45 pm-11:18 pm

1 stop7h 33m

$402

KnoxvilleSpokane

TYS - GEG

TYSGEG

Knoxville McGhee Tyson

Tue 9/1

7:19 am-12:02 pm

1 stop7h 43m

Spokane

Sat 9/12

6:30 am-9:54 pm

2 stops12h 24m

$407

KnoxvilleSpokane

TYS - GEG

TYSGEG

Knoxville McGhee Tyson

Wed 8/5

1:55 pm-10:25 pm

2 stops11h 30m

Spokane

Tue 8/11

6:15 am-6:55 pm

2 stops9h 40m

$412

KnoxvilleSpokane

TYS - GEG

TYSGEG

Knoxville McGhee Tyson

Wed 8/5

3:00 pm-10:25 pm

1 stop10h 25m

Spokane

Tue 8/11

6:15 am-6:55 pm

2 stops9h 40m

$413

KnoxvilleSpokane

TYS - GEG

TYSGEG

Knoxville McGhee Tyson

Tue 9/1

4:00 pm-11:35 pm

2 stops10h 35m

Spokane

Sat 9/12

5:00 pm-9:11 am

2 stops13h 11m

$427

KnoxvilleJackson

TYS - JAC

TYSJAC

Knoxville McGhee Tyson

Tue 5/26

4:56 pm-8:58 pm

1 stop6h 02m

Jackson Hole

Tue 6/2

1:42 pm-12:30 am

2 stops8h 48m

$431

KnoxvilleSpokane

TYS - GEG

TYSGEG

Knoxville McGhee Tyson

Tue 9/1

4:00 pm-11:35 pm

2 stops10h 35m

Spokane

Sat 9/12

5:00 pm-9:11 am

2 stops13h 11m

$436

Quickest round-trip

KnoxvilleJackson

TYS - JAC

TYSJAC

Knoxville McGhee Tyson

Fri 8/14

4:56 pm-9:02 pm

1 stop6h 06m

Jackson Hole

Mon 8/24

8:40 am-4:59 pm

1 stop6h 19m

$484

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

Other information

What is the cheapest month to fly to Idaho?

In general, July 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 $360. If you don’t want to visit Idaho in July, then you should wait until August to fly from Knoxville, when ticket prices are also cheap, with an average price of $378.

Cheap Knoxville to Idaho flight deals and tips

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

Fastest flight time	5h 55m
Direct flights	None

The fastest flight from Knoxville to Idaho takes 5h 55m

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

Search flight deals

Frequently asked questions about flying from Knoxville 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 April 2026.
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
Delta	PriceFrom $288	Free Cancellation	Rating 7.9 8,422 reviews	Search Delta flights
American Airlines	PriceFrom $288	Free Cancellation	Rating 7.1 11,625 reviews	Search American Airlines flights
United Airlines	PriceFrom $350	Free Cancellation	Rating 7.4 9,607 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.