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 $599.

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.

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

Denver (DEN) was the most common stop: 56% of momondo users choosing 1-stop flights on this route connected there.

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.

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 August 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.

$289 Cheap Flights from Knoxville to Idaho Falls (TYS-IDA) in 2025

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Find the cheapest flights from Knoxville to Idaho Falls (TYS-IDA)

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

5:00 am - 12:25 pmTYS-IDA

9h 25m2 stops

12:55 pm - 9:03 pmIDA-TYS

6h 08m1 stop

$294American Airlines

Find Deal

Wed, Oct 22 - Tue, Oct 28

5:00 am - 12:25 pmTYS-IDA

9h 25m2 stops

1:11 pm - 11:50 pmIDA-TYS

8h 39m2 stops

$299American Airlines

Find Deal

Wed, Oct 22 - Mon, Oct 27

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

5:00 am - 12:25 pmTYS-IDA

9h 25m2 stops

12:55 pm - 9:03 pmIDA-TYS

6h 08m1 stop

$399American Airlines

Find Deal

Sat, Oct 25 - Sat, Nov 1

10:22 am - 9:48 pmTYS-IDA

13h 26m2 stops

6:44 am - 7:01 pmIDA-TYS

10h 17m2 stops

$404American Airlines

Find Deal

Wed, Oct 22 - Tue, Oct 28

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

2:07 pm - 9:25 pmTYS-IDA

9h 18m1 stop

12:54 pm - 9:00 pmIDA-TYS

6h 06m1 stop

$444American Airlines

Find Deal

Tue, Sep 16 - Tue, Sep 23

5:45 am - 10:25 pmTYS-IDA

18h 40m2 stops

6:51 pm - 3:38 pmIDA-TYS

18h 47m2 stops

$609Delta

Find Deal

Tue, Sep 23 - Fri, Sep 26

6:00 am - 3:20 pmTYS-IDA

11h 20m2 stops

6:13 am - 10:16 pmIDA-TYS

14h 03m2 stops

$4,129Alaska Airlines

Find Deal

Fri, Sep 26 - Tue, Sep 30

American Airlines flights from Knoxville to Idaho Falls

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

American Airlines

Oct 22

TYS6:00 amKnoxville McGhee Tyson

8h 25m

1 stop

IDA12:25 pmIdaho Falls Fanning Field

Oct 27

IDA1:11 pmIdaho Falls Fanning Field

5h 52m

1 stop

TYS9:03 pmKnoxville McGhee Tyson

$289

Find similar

American Airlines

Oct 22

TYS5:00 amKnoxville McGhee Tyson

9h 25m

2 stops

IDA12:25 pmIdaho Falls Fanning Field

Oct 28

IDA12:55 pmIdaho Falls Fanning Field

6h 08m

1 stop

TYS9:03 pmKnoxville McGhee Tyson

$294

Find similar

American Airlines

Oct 22

TYS5:00 amKnoxville McGhee Tyson

9h 25m

2 stops

IDA12:25 pmIdaho Falls Fanning Field

Oct 27

IDA1:11 pmIdaho Falls Fanning Field

8h 39m

2 stops

TYS11:50 pmKnoxville McGhee Tyson

$299

Find similar

United Airlines flights from Knoxville to Idaho Falls

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

United Airlines

Sep 16

TYS5:45 amKnoxville McGhee Tyson

11h 26m

2 stops

IDA3:11 pmIdaho Falls Fanning Field

Sep 23

IDA5:00 amIdaho Falls Fanning Field

8h 10m

1 stop

TYS3:10 pmKnoxville McGhee Tyson

$384

Find similar

United Airlines

Sep 9

TYS5:45 amKnoxville McGhee Tyson

11h 26m

2 stops

IDA3:11 pmIdaho Falls Fanning Field

Sep 12

IDA5:00 amIdaho Falls Fanning Field

8h 10m

1 stop

TYS3:10 pmKnoxville McGhee Tyson

$429

Find similar

United Airlines

Sep 16

TYS5:45 amKnoxville McGhee Tyson

11h 26m

2 stops

IDA3:11 pmIdaho Falls Fanning Field

Sep 23

IDA10:56 amIdaho Falls Fanning Field

9h 49m

2 stops

TYS10:45 pmKnoxville McGhee Tyson

$445

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

KnoxvilleIdaho Falls

TYS - IDA

TYSIDA

Knoxville McGhee Tyson

Wed 10/22

5:00 am-12:25 pm

2 stops9h 25m

Idaho Falls Fanning Field

Tue 10/28

12:55 pm-9:03 pm

1 stop6h 08m

$294

KnoxvilleIdaho Falls

TYS - IDA

TYSIDA

Knoxville McGhee Tyson

Wed 10/22

5:00 am-12:25 pm

2 stops9h 25m

Idaho Falls Fanning Field

Mon 10/27

1:11 pm-11:50 pm

2 stops8h 39m

$299

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

KnoxvilleIdaho Falls

TYS - IDA

TYSIDA

Knoxville McGhee Tyson

Sat 10/25

5:00 am-12:25 pm

2 stops9h 25m

Idaho Falls Fanning Field

Sat 11/1

12:55 pm-9:03 pm

1 stop6h 08m

$399

KnoxvilleIdaho Falls

TYS - IDA

TYSIDA

Knoxville McGhee Tyson

Wed 10/22

10:22 am-9:48 pm

2 stops13h 26m

Idaho Falls Fanning Field

Tue 10/28

6:44 am-7:01 pm

2 stops10h 17m

$404

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

KnoxvilleIdaho Falls

TYS - IDA

TYSIDA

Knoxville McGhee Tyson

Tue 9/16

2:07 pm-9:25 pm

1 stop9h 18m

Idaho Falls Fanning Field

Tue 9/23

12:54 pm-9:00 pm

1 stop6h 06m

$444

KnoxvilleIdaho Falls

TYS - IDA

TYSIDA

Knoxville McGhee Tyson

Tue 9/23

5:45 am-10:25 pm

2 stops18h 40m

Idaho Falls Fanning Field

Fri 9/26

6:51 pm-3:38 pm

2 stops18h 47m

$609

KnoxvilleIdaho Falls

TYS - IDA

TYSIDA

Knoxville McGhee Tyson

Fri 9/26

6:00 am-3:20 pm

2 stops11h 20m

Idaho Falls Fanning Field

Tue 9/30

6:13 am-10:16 pm

2 stops14h 03m

$4,129

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

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 month to fly to Idaho Falls?

If you aren’t able to travel to Idaho Falls during the month of January, then flying in April is also cheap. Prices for this month can be found on momondo for an average of $453.

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

Best Price Found	$289
Fastest flight time	6h 12m
Direct flights	None
Airports in Idaho Falls	1 airport

The best flight deal from Knoxville to Idaho Falls found on momondo in the last 72 hours is $289

The fastest flight from Knoxville to Idaho Falls takes 6h 12m

There are no direct flights from Knoxville to Idaho Falls. Popular non-direct route for this connection is Knoxville McGhee Tyson Airport - Idaho Falls Fanning Field Airport.

There is 1 airport near Idaho Falls: Idaho Falls Fanning Field (IDA)

Search flight deals

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 12m.
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 August 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 55% of the total bookings. Other popular airlines include United Airlines with 45%.

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 10,000 reviews		Search American Airlines flights
United Airlines	PriceFrom $384	Free Cancellation	Rating 7.4 8,925 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.

An easier way to manage your Idaho Falls trip

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Cheap flights from Knoxville to Idaho Falls from $289

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 10/22. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Big names and deals

Big names and deals

Filter for what you want

Filter for what you want

Trusted and free

Trusted and free

Price Alerts

Price Alerts

Find the cheapest flights from Knoxville to Idaho Falls (TYS-IDA)

Cheap round-trip flights

Cheap one-way flights

Cheap last minute flights

American Airlines flights from Knoxville to Idaho Falls

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

United Airlines flights from Knoxville to Idaho Falls

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

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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 month to fly to Idaho Falls?

If you aren’t able to travel to Idaho Falls during the month of January, then flying in April is also cheap. Prices for this month can be found on momondo for an average of $453.

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: 56% 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 $599.

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

Best Price Found

Fastest flight time

Direct flights

Airports in Idaho Falls

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