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

Allegiant Air, Delta, and United Airlines 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 51% 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.

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 August 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.

$199 Cheap Flights from Knoxville to Idaho in 2025

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Find the cheapest flights from Knoxville to Idaho

Round-trip

One-way

Last minute

Cheap round-trip flights

6:00 am - 12:25 pmTYS-IDA

8h 25m1 stop

1:11 pm - 9:03 pmIDA-TYS

5h 52m1 stop

$289American Airlines

Find Deal

Wed, Oct 22 - Mon, Oct 27

2:07 pm - 6:39 pmTYS-GEG

7h 32m1 stop

6:00 am - 3:41 pmGEG-TYS

6h 41m1 stop

$289American Airlines

Find Deal

Tue, Sep 9 - Tue, Sep 30

6:03 pm - 11:48 pmTYS-GEG

8h 45m1 stop

5:03 pm - 9:44 amGEG-TYS

13h 41m2 stops

$319Delta

Find Deal

Tue, Sep 9 - Tue, Sep 30

5:45 am - 1:16 pmTYS-GEG

10h 31m2 stops

7:25 pm - 11:41 amGEG-TYS

13h 16m2 stops

$324Delta

Find Deal

Tue, Sep 9 - Tue, Sep 30

6:30 am - 1:30 pmTYS-BOI

9h 00m1 stop

12:28 pm - 11:16 pmBOI-TYS

32h 48m2 stops

$331

Find Deal

Thu, Oct 9 - Thu, Oct 16

5:45 am - 3:11 pmTYS-IDA

11h 26m2 stops

5:00 am - 3:10 pmIDA-TYS

8h 10m1 stop

$384United Airlines

Find Deal

Tue, Sep 16 - Tue, Sep 23

2:34 pm - 9:28 amTYS-BOI

20h 54m2 stops

5:45 pm - 1:12 pmBOI-TYS

17h 27m2 stops

$414Alaska Airlines

Find Deal

Tue, Sep 23 - Fri, Sep 26

5:45 am - 3:11 pmTYS-IDA

11h 26m2 stops

5:00 am - 3:10 pmIDA-TYS

8h 10m1 stop

$429United Airlines

Find Deal

Tue, Sep 9 - Fri, Sep 12

6:30 am - 1:30 pmTYS-BOI

9h 00m1 stop

2:25 pm - 1:23 pmBOI-TYS

20h 58m1 stop

$441

Find Deal

Thu, Oct 9 - Thu, Oct 16

10:57 am - 12:24 amTYS-GEG

16h 27m2 stops

9:00 am - 10:29 amGEG-TYS

22h 29m2 stops

$499Alaska Airlines

Find Deal

Thu, Dec 11 - Mon, Dec 15

Delta flights from Knoxville to Idaho

Our best Delta deals on Knoxville to Idaho flight tickets

Delta

Sep 9

TYS6:03 pmKnoxville McGhee Tyson

8h 45m

1 stop

GEG11:48 pmSpokane

Sep 30

GEG5:03 pmSpokane

13h 41m

2 stops

TYS9:44 amKnoxville McGhee Tyson

$319

Find similar

Delta

Sep 9

TYS5:45 amKnoxville McGhee Tyson

10h 31m

2 stops

GEG1:16 pmSpokane

Sep 30

GEG7:25 pmSpokane

13h 16m

2 stops

TYS11:41 amKnoxville McGhee Tyson

$324

Find similar

Delta

Aug 30

TYS6:36 amKnoxville McGhee Tyson

9h 25m

1 stop

BOI2:01 pmBoise Air Term. Gowen Fld

Sep 2

BOI3:06 pmBoise Air Term. Gowen Fld

6h 49m

1 stop

TYS11:55 pmKnoxville McGhee Tyson

$364

Find similar

Alaska Airlines flights from Knoxville to Idaho

Our best Alaska Airlines deals on Knoxville to Idaho flight tickets

Alaska Airlines

Sep 23

TYS2:34 pmKnoxville McGhee Tyson

20h 54m

2 stops

BOI9:28 amBoise Air Term. Gowen Fld

Sep 26

BOI5:45 pmBoise Air Term. Gowen Fld

17h 27m

2 stops

TYS1:12 pmKnoxville McGhee Tyson

$414

Find similar

Alaska Airlines

Dec 11

TYS10:57 amKnoxville McGhee Tyson

16h 27m

2 stops

GEG12:24 amSpokane

Dec 15

GEG9:00 amSpokane

22h 29m

2 stops

TYS10:29 amKnoxville McGhee Tyson

$499

Find similar

Alaska Airlines

Oct 9

TYS12:34 pmKnoxville McGhee Tyson

13h 23m

2 stops

BOI11:57 pmBoise Air Term. Gowen Fld

Oct 14

BOI8:26 pmBoise Air Term. Gowen Fld

13h 19m

2 stops

TYS11:45 amKnoxville McGhee Tyson

$561

Find similar

Fly from

Fly to

Route

Depart

Return

Price

KnoxvilleIdaho Falls

TYS - IDA

TYSIDA

Knoxville McGhee Tyson

Wed 10/22

6:00 am-12:25 pm

1 stop8h 25m

Idaho Falls Fanning Field

Mon 10/27

1:11 pm-9:03 pm

1 stop5h 52m

$289

KnoxvilleSpokane

TYS - GEG

TYSGEG

Knoxville McGhee Tyson

Tue 9/9

2:07 pm-6:39 pm

1 stop7h 32m

Spokane

Tue 9/30

6:00 am-3:41 pm

1 stop6h 41m

$289

KnoxvilleSpokane

TYS - GEG

TYSGEG

Knoxville McGhee Tyson

Tue 9/9

6:03 pm-11:48 pm

1 stop8h 45m

Spokane

Tue 9/30

5:03 pm-9:44 am

2 stops13h 41m

$319

KnoxvilleSpokane

TYS - GEG

TYSGEG

Knoxville McGhee Tyson

Tue 9/9

5:45 am-1:16 pm

2 stops10h 31m

Spokane

Tue 9/30

7:25 pm-11:41 am

2 stops13h 16m

$324

KnoxvilleBoise

TYS - BOI

TYSBOI

Knoxville McGhee Tyson

Thu 10/9

6:30 am-1:30 pm

1 stop9h 00m

Boise Air Term. Gowen Fld

Thu 10/16

12:28 pm-11:16 pm

2 stops32h 48m

$331

KnoxvilleIdaho Falls

TYS - IDA

TYSIDA

Knoxville McGhee Tyson

Tue 9/16

5:45 am-3:11 pm

2 stops11h 26m

Idaho Falls Fanning Field

Tue 9/23

5:00 am-3:10 pm

1 stop8h 10m

$384

KnoxvilleBoise

TYS - BOI

TYSBOI

Knoxville McGhee Tyson

Tue 9/23

2:34 pm-9:28 am

2 stops20h 54m

Boise Air Term. Gowen Fld

Fri 9/26

5:45 pm-1:12 pm

2 stops17h 27m

$414

KnoxvilleIdaho Falls

TYS - IDA

TYSIDA

Knoxville McGhee Tyson

Tue 9/9

5:45 am-3:11 pm

2 stops11h 26m

Idaho Falls Fanning Field

Fri 9/12

5:00 am-3:10 pm

1 stop8h 10m

$429

KnoxvilleBoise

TYS - BOI

TYSBOI

Knoxville McGhee Tyson

Thu 10/9

6:30 am-1:30 pm

1 stop9h 00m

Boise Air Term. Gowen Fld

Thu 10/16

2:25 pm-1:23 pm

1 stop20h 58m

$441

KnoxvilleSpokane

TYS - GEG

TYSGEG

Knoxville McGhee Tyson

Thu 12/11

10:57 am-12:24 am

2 stops16h 27m

Spokane

Mon 12/15

9:00 am-10:29 am

2 stops22h 29m

$499

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 $236. If you don’t want to visit Idaho in April, then you should wait until September to fly from Knoxville, when ticket prices are also cheap, with an average price of $298.

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

Best Price Found	$199
Fastest flight time	5h 59m
Direct flights	None
Airports in Idaho	4 airports

The best one-way flight to Idaho from Knoxville in the past 72 hours is $199. The best round-trip flight deal from Knoxville to Idaho found on momondo in the last 72 hours is $289.

The fastest flight from Knoxville to Idaho takes 5h 59m

There are no direct flights from Knoxville to Idaho. Popular non-direct routes for this connection are Knoxville McGhee Tyson Airport - Spokane Airport, Knoxville McGhee Tyson Airport - Boise Air Term. Gowen Fld Airport and Knoxville McGhee Tyson Airport - Jackson Hole Airport.

There are 4 airports near Idaho: Idaho Falls Fanning Field (IDA), Spokane (GEG), Jackson Hole (JAC), Boise Air Term. Gowen Fld (BOI)

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 August 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 8.0 7,981 reviews	Search Delta flights
United Airlines	PriceFrom $313	Free Cancellation	Rating 7.4 8,925 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.