What airlines fly to Idaho?

American Airlines, United Airlines and Delta 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 49% 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, Delta, and Southwest 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 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.

$145 Cheap Flights from Knoxville to Idaho in 2026/27

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.

7:44 am - 12:59 pmTYS Knoxville McGhee Tyson-BOI Boise Air Term. Gowen Fld

7h 15m1 stop Chicago O'Hare Intl

1:39 pm - 11:26 pmBOI Boise Air Term. Gowen Fld-TYS Knoxville McGhee Tyson

7h 47m1 stop Chicago O'Hare Intl

$289American Airlines

Mon, Dec 7 - Thu, Dec 10

5:30 am - 11:24 amTYS Knoxville McGhee Tyson-BOI Boise Air Term. Gowen Fld

7h 54m1 stop Dallas/Fort Worth

6:40 am - 4:39 pmBOI Boise Air Term. Gowen Fld-TYS Knoxville McGhee Tyson

7h 59m1 stop Dallas/Fort Worth

$289American Airlines

Thu, Dec 3 - Tue, Dec 8

5:40 am - 1:17 pmTYS Knoxville McGhee Tyson-BOI Boise Air Term. Gowen Fld

9h 37m1 stop Atlanta Hartsfield-Jackson

1:47 pm - 10:17 pmBOI Boise Air Term. Gowen Fld-TYS Knoxville McGhee Tyson

6h 30m1 stop Atlanta Hartsfield-Jackson

$289Delta

Sat, Dec 5 - Wed, Dec 9

5:40 am - 1:17 pmTYS Knoxville McGhee Tyson-BOI Boise Air Term. Gowen Fld

9h 37m1 stop Atlanta Hartsfield-Jackson

1:47 pm - 11:57 pmBOI Boise Air Term. Gowen Fld-TYS Knoxville McGhee Tyson

8h 10m1 stop Atlanta Hartsfield-Jackson

$289Delta

Sat, Dec 5 - Mon, Dec 7

5:40 am - 1:17 pmTYS Knoxville McGhee Tyson-BOI Boise Air Term. Gowen Fld

9h 37m1 stop Atlanta Hartsfield-Jackson

1:47 pm - 10:17 pmBOI Boise Air Term. Gowen Fld-TYS Knoxville McGhee Tyson

6h 30m1 stop Atlanta Hartsfield-Jackson

$289Delta

Sat, Dec 5 - Tue, Dec 8

4:15 pm - 10:35 pmTYS Knoxville McGhee Tyson-BOI Boise Air Term. Gowen Fld

8h 20m1 stop Denver Intl

7:55 am - 7:50 pmBOI Boise Air Term. Gowen Fld-TYS Knoxville McGhee Tyson

9h 55m2 stops Denver Intl Nashville Intl

$295Southwest

Thu, Dec 3 - Tue, Dec 8

7:05 am - 3:10 pmTYS Knoxville McGhee Tyson-BOI Boise Air Term. Gowen Fld

10h 05m2 stops Nashville Intl Denver Intl

7:55 am - 7:50 pmBOI Boise Air Term. Gowen Fld-TYS Knoxville McGhee Tyson

9h 55m2 stops Denver Intl Nashville Intl

$344Southwest

Thu, Dec 3 - Tue, Dec 8

4:28 pm - 9:10 pmTYS Knoxville McGhee Tyson-IDA Idaho Falls Fanning Field

6h 42m1 stop Denver Intl

7:00 am - 2:55 pmIDA Idaho Falls Fanning Field-TYS Knoxville McGhee Tyson

5h 55m1 stop Denver Intl

$379United Airlines

Fri, Jan 8 - Sun, Jan 10

9:45 am - 9:10 pmTYS Knoxville McGhee Tyson-IDA Idaho Falls Fanning Field

13h 25m2 stops Washington, D.C. Dulles Intl Denver Intl

7:00 am - 2:55 pmIDA Idaho Falls Fanning Field-TYS Knoxville McGhee Tyson

5h 55m1 stop Denver Intl

$384United Airlines

Fri, Jan 8 - Sun, Jan 10

2:49 pm - 8:06 pmTYS Knoxville McGhee Tyson-BOI Boise Air Term. Gowen Fld

7h 17m1 stop Dallas/Fort Worth

1:35 pm - 11:19 pmBOI Boise Air Term. Gowen Fld-TYS Knoxville McGhee Tyson

7h 44m1 stop Dallas/Fort Worth

$389American Airlines

Fri, Jan 15 - Sun, Jan 24

Cheap last minute flights

Enter your travel dates to find the best prices.

3:00 pm - 9:42 pmTYS Knoxville McGhee Tyson-IDA Idaho Falls Fanning Field

8h 42m1 stop Dallas/Fort Worth

6:36 am - 8:43 pmIDA Idaho Falls Fanning Field-TYS Knoxville McGhee Tyson

12h 07m2 stops Phoenix Sky Harbor Intl Charlotte Douglas

$499American Airlines

Wed, Oct 28 - Wed, Nov 4

10:00 am - 9:42 pmTYS Knoxville McGhee Tyson-IDA Idaho Falls Fanning Field

13h 42m2 stops Charlotte Douglas Dallas/Fort Worth

6:36 am - 8:43 pmIDA Idaho Falls Fanning Field-TYS Knoxville McGhee Tyson

12h 07m2 stops Phoenix Sky Harbor Intl Charlotte Douglas

$534American Airlines

Wed, Oct 28 - Wed, Nov 4

3:00 pm - 9:42 pmTYS Knoxville McGhee Tyson-IDA Idaho Falls Fanning Field

8h 42m1 stop Dallas/Fort Worth

8:00 am - 4:42 pmIDA Idaho Falls Fanning Field-TYS Knoxville McGhee Tyson

6h 42m1 stop Dallas/Fort Worth

$549American Airlines

Wed, Oct 28 - Wed, Nov 4

3:00 pm - 9:42 pmTYS Knoxville McGhee Tyson-IDA Idaho Falls Fanning Field

8h 42m1 stop Dallas/Fort Worth

6:36 am - 8:43 pmIDA Idaho Falls Fanning Field-TYS Knoxville McGhee Tyson

12h 07m2 stops Phoenix Sky Harbor Intl Charlotte Douglas

$554American Airlines

Wed, Oct 28 - Wed, Nov 4

3:00 pm - 9:42 pmTYS Knoxville McGhee Tyson-IDA Idaho Falls Fanning Field

8h 42m1 stop Dallas/Fort Worth

6:36 am - 8:43 pmIDA Idaho Falls Fanning Field-TYS Knoxville McGhee Tyson

12h 07m2 stops Phoenix Sky Harbor Intl Charlotte Douglas

$569American Airlines

Wed, Oct 28 - Wed, Nov 4

10:00 am - 9:42 pmTYS Knoxville McGhee Tyson-IDA Idaho Falls Fanning Field

13h 42m2 stops Charlotte Douglas Dallas/Fort Worth

6:36 am - 8:43 pmIDA Idaho Falls Fanning Field-TYS Knoxville McGhee Tyson

12h 07m2 stops Phoenix Sky Harbor Intl Charlotte Douglas

$579American Airlines

Wed, Oct 28 - Wed, Nov 4

9:00 am - 1:45 pmTYS Knoxville McGhee Tyson-BOI Boise Air Term. Gowen Fld

6h 45m1 stop Denver Intl

12:31 pm - 8:54 pmBOI Boise Air Term. Gowen Fld-TYS Knoxville McGhee Tyson

6h 23m1 stop Chicago O'Hare Intl

$705United Airlines

Wed, Oct 28 - Sat, Oct 31

9:00 am - 1:45 pmTYS Knoxville McGhee Tyson-BOI Boise Air Term. Gowen Fld

6h 45m1 stop Denver Intl

10:37 am - 9:57 pmBOI Boise Air Term. Gowen Fld-TYS Knoxville McGhee Tyson

9h 20m2 stops Denver Intl Houston George Bush Intcntl

$710United Airlines

Wed, Oct 28 - Sat, Oct 31

10:45 am - 6:03 pmTYS Knoxville McGhee Tyson-BOI Boise Air Term. Gowen Fld

9h 18m2 stops Chicago O'Hare Intl Denver Intl

6:30 am - 8:54 pmBOI Boise Air Term. Gowen Fld-TYS Knoxville McGhee Tyson

12h 24m2 stops Denver Intl Chicago O'Hare Intl

$716United Airlines

Wed, Oct 28 - Sat, Oct 31

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Delta flights from Knoxville to Idaho

Our best Delta deals on Knoxville to Idaho flight tickets

Delta

Dec 5

TYS5:40 amKnoxville McGhee Tyson

9h 37m

1 stop

BOI1:17 pmBoise Air Term. Gowen Fld

Dec 8

BOI1:47 pmBoise Air Term. Gowen Fld

6h 30m

1 stop

TYS10:17 pmKnoxville McGhee Tyson

$289

Delta

Dec 5

TYS5:40 amKnoxville McGhee Tyson

8h 31m

2 stops

BOI12:11 pmBoise Air Term. Gowen Fld

Dec 7

BOI1:47 pmBoise Air Term. Gowen Fld

8h 10m

1 stop

TYS11:57 pmKnoxville McGhee Tyson

$294

Delta

Dec 5

TYS5:40 amKnoxville McGhee Tyson

8h 31m

2 stops

BOI12:11 pmBoise Air Term. Gowen Fld

Dec 7

BOI6:45 pmBoise Air Term. Gowen Fld

13h 16m

2 stops

TYS10:01 amKnoxville McGhee Tyson

$300

Southwest flights from Knoxville to Idaho

Our best Southwest deals on Knoxville to Idaho flight tickets

Southwest

Dec 3

TYS4:15 pmKnoxville McGhee Tyson

8h 20m

1 stop

BOI10:35 pmBoise Air Term. Gowen Fld

Dec 8

BOI7:55 amBoise Air Term. Gowen Fld

9h 55m

2 stops

TYS7:50 pmKnoxville McGhee Tyson

$295

Southwest

Dec 9

TYS2:40 pmKnoxville McGhee Tyson

9h 55m

2 stops

BOI10:35 pmBoise Air Term. Gowen Fld

Jan 16

BOI5:15 amBoise Air Term. Gowen Fld

8h 30m

2 stops

TYS3:45 pmKnoxville McGhee Tyson

$379

Southwest

Dec 1

TYS2:40 pmKnoxville McGhee Tyson

10h 35m

2 stops

BOI11:15 pmBoise Air Term. Gowen Fld

Dec 4

BOI7:55 amBoise Air Term. Gowen Fld

5h 35m

1 stop

TYS3:30 pmKnoxville McGhee Tyson

$473

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

KnoxvilleBoise

TYS Knoxville McGhee Tyson - BOI Boise Air Term. Gowen Fld

TYSBOI

Knoxville McGhee Tyson

Mon 12/7

7:44 am-12:59 pm

1 stop7h 15m

Boise Air Term. Gowen Fld

Thu 12/10

1:39 pm-11:26 pm

1 stop7h 47m

$289

KnoxvilleBoise

TYS Knoxville McGhee Tyson - BOI Boise Air Term. Gowen Fld

TYSBOI

Knoxville McGhee Tyson

Thu 12/3

5:30 am-11:24 am

1 stop7h 54m

Boise Air Term. Gowen Fld

Tue 12/8

6:40 am-4:39 pm

1 stop7h 59m

$289

KnoxvilleBoise

TYS Knoxville McGhee Tyson - BOI Boise Air Term. Gowen Fld

TYSBOI

Knoxville McGhee Tyson

Sat 12/5

5:40 am-1:17 pm

1 stop9h 37m

Boise Air Term. Gowen Fld

Wed 12/9

1:47 pm-10:17 pm

1 stop6h 30m

$289

KnoxvilleBoise

TYS Knoxville McGhee Tyson - BOI Boise Air Term. Gowen Fld

TYSBOI

Knoxville McGhee Tyson

Sat 12/5

5:40 am-1:17 pm

1 stop9h 37m

Boise Air Term. Gowen Fld

Mon 12/7

1:47 pm-11:57 pm

1 stop8h 10m

$289

KnoxvilleBoise

TYS Knoxville McGhee Tyson - BOI Boise Air Term. Gowen Fld

TYSBOI

Knoxville McGhee Tyson

Sat 12/5

5:40 am-1:17 pm

1 stop9h 37m

Boise Air Term. Gowen Fld

Tue 12/8

1:47 pm-10:17 pm

1 stop6h 30m

$289

KnoxvilleBoise

TYS Knoxville McGhee Tyson - BOI Boise Air Term. Gowen Fld

TYSBOI

Knoxville McGhee Tyson

Thu 12/3

4:15 pm-10:35 pm

1 stop8h 20m

Boise Air Term. Gowen Fld

Tue 12/8

7:55 am-7:50 pm

2 stops9h 55m

$295

KnoxvilleBoise

TYS Knoxville McGhee Tyson - BOI Boise Air Term. Gowen Fld

TYSBOI

Knoxville McGhee Tyson

Thu 12/3

7:05 am-3:10 pm

2 stops10h 05m

Boise Air Term. Gowen Fld

Tue 12/8

7:55 am-7:50 pm

2 stops9h 55m

$344

Quickest round-trip

KnoxvilleIdaho Falls

TYS Knoxville McGhee Tyson - IDA Idaho Falls Fanning Field

TYSIDA

Knoxville McGhee Tyson

Fri 1/8

4:28 pm-9:10 pm

1 stop6h 42m

Idaho Falls Fanning Field

Sun 1/10

7:00 am-2:55 pm

1 stop5h 55m

$379

KnoxvilleIdaho Falls

TYS Knoxville McGhee Tyson - IDA Idaho Falls Fanning Field

TYSIDA

Knoxville McGhee Tyson

Fri 1/8

9:45 am-9:10 pm

2 stops13h 25m

Idaho Falls Fanning Field

Sun 1/10

7:00 am-2:55 pm

1 stop5h 55m

$384

KnoxvilleBoise

TYS Knoxville McGhee Tyson - BOI Boise Air Term. Gowen Fld

TYSBOI

Knoxville McGhee Tyson

Fri 1/15

2:49 pm-8:06 pm

1 stop7h 17m

Boise Air Term. Gowen Fld

Sun 1/24

1:35 pm-11:19 pm

1 stop7h 44m

$389

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 $397. If you don’t want to visit Idaho in April, then you should wait until November to fly from Knoxville, when ticket prices are also cheap, with an average price of $409.

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	$145
Fastest flight time	5h 52m
Direct flights	None

The best one-way flight to Idaho from Knoxville in the past 72 hours is $145. 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 52m

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 October 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
United Airlines	PriceFrom $350	Free Cancellation	Rating 7.3 10,436 reviews	Search United Airlines flights
Delta	PriceFrom $398	Free Cancellation	Rating 7.8 8,678 reviews	Search Delta flights
American Airlines	PriceFrom $413	Free Cancellation	Rating 7.0 12,194 reviews	Search American 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.