Which layover airport has the shortest travel time from Knoxville to Idaho Falls?

Flights connecting via Denver (DEN) have the shortest average one-way travel time: 6h 24m.

Which layover airport offers the lowest fares from Knoxville to Idaho Falls?

Flights via Dallas (DFW) offer the lowest average round-trip price of $610.

Which layover airport has the shortest connection time from Knoxville to Idaho Falls?

Denver (DEN) has the shortest average layover time for this route: 1h 08m.

What airlines fly to Idaho Falls?

American Airlines, United Airlines and Delta are the top three most popular airlines that fly to Idaho Falls from Knoxville according to our data. American Airlines is the first choice among our users, with 64% of people opting to fly with this airline when traveling to Idaho Falls. Keep in mind that there are 3 different airlines that fly to Idaho Falls on a routine basis, so you have a few additional options to choose from.

Which airport is the most popular layover for flights between Knoxville and Idaho Falls?

Denver (DEN) was the most common stop: 71% of momondo users choosing 1-stop flights on this route connected there.

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

Prices for flights from Knoxville McGhee Tyson Airport to Idaho Falls Fanning Field Airport are refreshed on a daily basis.

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

As of October 2025, there are 2 operators available to choose from for flights from Knoxville McGhee Tyson Airport to Idaho Falls Fanning Field Airport.

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

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Knoxville McGhee Tyson Airport to Idaho Falls Fanning Field Airport.

What documentation or ID do you need to fly to Idaho Falls Fanning Field Airport?

The required travel and health documents for your Idaho Falls Fanning Field Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Idaho Falls Fanning Field Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$309 Cheap Flights from Knoxville to Idaho Falls in 2025/26

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8:26 am - 3:16 pmTYS-IDA

8h 50m2 stops

10:50 am - 11:59 pmIDA-TYS

11h 09m2 stops

$349United Airlines

Find Deal

Wed, Nov 5 - Sat, Nov 8

6:45 am - 1:35 pmTYS-IDA

8h 50m2 stops

10:50 am - 11:59 pmIDA-TYS

11h 09m2 stops

$370United Airlines

Find Deal

Thu, Nov 6 - Mon, Nov 10

4:55 pm - 10:52 pmTYS-IDA

7h 57m1 stop

10:50 am - 11:59 pmIDA-TYS

11h 09m2 stops

$378United Airlines

Find Deal

Fri, Nov 7 - Sun, Nov 9

6:45 am - 1:35 pmTYS-IDA

8h 50m2 stops

2:45 pm - 10:30 pmIDA-TYS

5h 45m1 stop

$385United Airlines

Find Deal

Thu, Nov 6 - Mon, Nov 10

4:55 pm - 9:03 pmTYS-IDA

6h 08m1 stop

7:00 am - 3:51 pmIDA-TYS

6h 51m1 stop

$419United Airlines

Find Deal

Fri, Nov 7 - Sun, Nov 9

4:23 pm - 1:06 pmTYS-IDA

46h 43m2 stops

9:37 pm - 8:42 pmIDA-TYS

21h 05m1 stop

$507Multiple Airlines

Find Deal

Mon, Dec 22 - Mon, Dec 29

8:00 am - 2:20 pmTYS-IDA

8h 20m1 stop

10:52 pm - 11:33 amIDA-TYS

34h 41m2 stops

$529Multiple Airlines

Find Deal

Mon, Dec 22 - Mon, Dec 29

8:00 am - 2:20 pmTYS-IDA

8h 20m1 stop

9:37 pm - 8:42 pmIDA-TYS

21h 05m1 stop

$547Allegiant Air

Find Deal

Mon, Dec 22 - Mon, Dec 29

5:23 am - 12:46 pmTYS-IDA

9h 23m1 stop

1:16 pm - 11:45 pmIDA-TYS

8h 29m1 stop

$829American Airlines

Find Deal

Mon, Dec 22 - Mon, Dec 29

5:23 am - 12:46 pmTYS-IDA

9h 23m1 stop

7:00 am - 8:43 pmIDA-TYS

11h 43m2 stops

$834American Airlines

Find Deal

Mon, Dec 22 - Mon, Dec 29

United Airlines flights from Knoxville to Idaho Falls

Our best United Airlines deals on Knoxville to Idaho Falls flight tickets

United Airlines

Nov 5

TYS8:26 amKnoxville McGhee Tyson

8h 50m

2 stops

IDA3:16 pmIdaho Falls Fanning Field

Nov 8

IDA10:50 amIdaho Falls Fanning Field

11h 09m

2 stops

TYS11:59 pmKnoxville McGhee Tyson

$349

Find similar

United Airlines

Nov 6

TYS6:45 amKnoxville McGhee Tyson

8h 50m

2 stops

IDA1:35 pmIdaho Falls Fanning Field

Nov 10

IDA10:50 amIdaho Falls Fanning Field

11h 09m

2 stops

TYS11:59 pmKnoxville McGhee Tyson

$370

Find similar

United Airlines

Nov 7

TYS4:55 pmKnoxville McGhee Tyson

7h 57m

1 stop

IDA10:52 pmIdaho Falls Fanning Field

Nov 9

IDA10:50 amIdaho Falls Fanning Field

11h 09m

2 stops

TYS11:59 pmKnoxville McGhee Tyson

$378

Find similar

American Airlines flights from Knoxville to Idaho Falls

Our best American Airlines deals on Knoxville to Idaho Falls flight tickets

American Airlines

Oct 27

TYS8:09 amKnoxville McGhee Tyson

6h 16m

1 stop

IDA12:25 pmIdaho Falls Fanning Field

Nov 3

IDA1:58 pmIdaho Falls Fanning Field

8h 10m

1 stop

TYS12:08 amKnoxville McGhee Tyson

$804

Find similar

American Airlines

Dec 22

TYS5:23 amKnoxville McGhee Tyson

9h 23m

1 stop

IDA12:46 pmIdaho Falls Fanning Field

Dec 29

IDA1:16 pmIdaho Falls Fanning Field

8h 29m

1 stop

TYS11:45 pmKnoxville McGhee Tyson

$829

Find similar

American Airlines

Dec 22

TYS5:23 amKnoxville McGhee Tyson

9h 23m

1 stop

IDA12:46 pmIdaho Falls Fanning Field

Dec 29

IDA7:00 amIdaho Falls Fanning Field

11h 43m

2 stops

TYS8:43 pmKnoxville McGhee Tyson

$834

Find similar

Fly from

Fly to

Route

Depart

Return

Price

KnoxvilleIdaho Falls

TYS - IDA

TYSIDA

Knoxville McGhee Tyson

Wed 11/5

8:26 am-3:16 pm

2 stops8h 50m

Idaho Falls Fanning Field

Sat 11/8

10:50 am-11:59 pm

2 stops11h 09m

$349

KnoxvilleIdaho Falls

TYS - IDA

TYSIDA

Knoxville McGhee Tyson

Thu 11/6

6:45 am-1:35 pm

2 stops8h 50m

Idaho Falls Fanning Field

Mon 11/10

10:50 am-11:59 pm

2 stops11h 09m

$370

KnoxvilleIdaho Falls

TYS - IDA

TYSIDA

Knoxville McGhee Tyson

Fri 11/7

4:55 pm-10:52 pm

1 stop7h 57m

Idaho Falls Fanning Field

Sun 11/9

10:50 am-11:59 pm

2 stops11h 09m

$378

KnoxvilleIdaho Falls

TYS - IDA

TYSIDA

Knoxville McGhee Tyson

Thu 11/6

6:45 am-1:35 pm

2 stops8h 50m

Idaho Falls Fanning Field

Mon 11/10

2:45 pm-10:30 pm

1 stop5h 45m

$385

KnoxvilleIdaho Falls

TYS - IDA

TYSIDA

Knoxville McGhee Tyson

Fri 11/7

4:55 pm-9:03 pm

1 stop6h 08m

Idaho Falls Fanning Field

Sun 11/9

7:00 am-3:51 pm

1 stop6h 51m

$419

KnoxvilleIdaho Falls

TYS - IDA

TYSIDA

Knoxville McGhee Tyson

Mon 12/22

4:23 pm-1:06 pm

2 stops46h 43m

Idaho Falls Fanning Field

Mon 12/29

9:37 pm-8:42 pm

1 stop21h 05m

$507

KnoxvilleIdaho Falls

TYS - IDA

TYSIDA

Knoxville McGhee Tyson

Mon 12/22

8:00 am-2:20 pm

1 stop8h 20m

Idaho Falls Fanning Field

Mon 12/29

10:52 pm-11:33 am

2 stops34h 41m

$529

KnoxvilleIdaho Falls

TYS - IDA

TYSIDA

Knoxville McGhee Tyson

Mon 12/22

8:00 am-2:20 pm

1 stop8h 20m

Idaho Falls Fanning Field

Mon 12/29

9:37 pm-8:42 pm

1 stop21h 05m

$547

KnoxvilleIdaho Falls

TYS - IDA

TYSIDA

Knoxville McGhee Tyson

Mon 12/22

5:23 am-12:46 pm

1 stop9h 23m

Idaho Falls Fanning Field

Mon 12/29

1:16 pm-11:45 pm

1 stop8h 29m

$829

KnoxvilleIdaho Falls

TYS - IDA

TYSIDA

Knoxville McGhee Tyson

Mon 12/22

5:23 am-12:46 pm

1 stop9h 23m

Idaho Falls Fanning Field

Mon 12/29

7:00 am-8:43 pm

2 stops11h 43m

$834

Flights are sorted by cheapest round-trip flights first.

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How to get the cheapest flight ticket from Knoxville to Idaho Falls

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

Layovers

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

Our data shows that Friday is the least expensive day to fly to Idaho Falls. Tickets to fly out on this day can be as low as $494. Be sure to avoid booking your departure on a Sunday as prices are generally higher than usual. According to our data, the average ticket price to Idaho Falls on Sunday is $1,306.

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

Our most recent data shows that the best time of day to fly to Idaho Falls is in the afternoon. Flights from Knoxville to Idaho Falls during this time can be as low as $573. Try not to purchase tickets at noon because they tend to be around $794. Of course, these prices can vary depending on the time of year and what airport you fly to.

When to book flights from Knoxville to Idaho Falls

Are you open to changing your travel dates? Check out the ideal times to fly from Knoxville to Idaho Falls according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap Knoxville to Idaho Falls (TYS to IDA) flight deals and tips

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

Direct flights	None

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

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How far is Knoxville McGhee Tyson to Idaho Falls Fanning Field by plane?
The straight-line distance from Knoxville McGhee Tyson to Idaho Falls Fanning Field is 1571.6 mi. A reasonable flight in good conditions will take 6h 08m.
When did momondo last update prices for flights from Knoxville McGhee Tyson Airport to Idaho Falls Fanning Field Airport?
Prices for flights from Knoxville McGhee Tyson Airport to Idaho Falls Fanning Field Airport are refreshed on a daily basis.
How many operators does momondo search for flights from Knoxville McGhee Tyson Airport to Idaho Falls Fanning Field Airport?
As of October 2025, there are 2 operators available to choose from for flights from Knoxville McGhee Tyson Airport to Idaho Falls Fanning Field Airport.
How old do you have to be to fly from Knoxville McGhee Tyson Airport to Idaho Falls Fanning Field Airport?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Knoxville McGhee Tyson Airport to Idaho Falls Fanning Field Airport.
What documentation or ID do you need to fly to Idaho Falls Fanning Field Airport?
The required travel and health documents for your Idaho Falls Fanning Field Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Idaho Falls Fanning Field Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
What is the most popular airline from Knoxville to Idaho Falls?
Based on momondo bookings for flights between Knoxville and Idaho Falls, the leading airline is American Airlines, making up 54% of the total bookings. Other popular airlines include United Airlines with 46%.

Best airlines flying from Knoxville to Idaho Falls

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

Airline	Rating	Free Cancellation	Price
American Airlines	PriceFrom $288	Free Cancellation	Rating 7.2 11,032 reviews		Search American Airlines flights
United Airlines	PriceFrom $384	Free Cancellation	Rating 7.4 8,995 reviews		Search United Airlines flights

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Why use momondo?

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

Finding the right flight to Idaho Falls from Knoxville is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Idaho Falls quick and easy, saving you time and money.

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

Flights from Knoxville to Idaho Falls with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

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

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Idaho Falls from Knoxville.

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

If you are simply researching potential flights to Idaho Falls, momondo offers a useful price alert feature which will track prices for flights to Idaho Falls from Knoxville and alert you when they change.

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Cheap flights from Knoxville to Idaho Falls from $349

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Knoxville to Idaho Falls departing on 11/5. 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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How to get the cheapest flight ticket from Knoxville to Idaho Falls

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 day to depart on your flight to Idaho Falls?

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

What airlines fly to Idaho Falls?

Which airport is the most popular layover for flights between Knoxville and Idaho Falls?

Denver (DEN) was the most common stop: 71% of momondo users choosing 1-stop flights on this route connected there.

Which layover airport offers the lowest fares from Knoxville to Idaho Falls?

Flights via Dallas (DFW) offer the lowest average round-trip price of $610.

Which layover airport has the shortest travel time from Knoxville to Idaho Falls?

Flights connecting via Denver (DEN) have the shortest average one-way travel time: 6h 24m.

Which layover airport has the shortest connection time from Knoxville to Idaho Falls?

Denver (DEN) has the shortest average layover time for this route: 1h 08m.

When to book flights from Knoxville to Idaho Falls

Cheap Knoxville to Idaho Falls (TYS to IDA) flight deals and tips

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

Direct flights

How far is Knoxville McGhee Tyson to Idaho Falls Fanning Field by plane?

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

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

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

What documentation or ID do you need to fly to Idaho Falls Fanning Field Airport?

What is the most popular airline from Knoxville to Idaho Falls?

Best airlines flying from Knoxville to Idaho Falls

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

Traveling to a place near Idaho Falls?

Why use momondo?

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

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

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

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

An easier way to manage your Idaho Falls trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to the United States

Airports servicing Idaho