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Cheap flights from Idaho Falls to Knoxville from $250

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Idaho Falls to Knoxville departing on 5/1. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from Idaho Falls to Knoxville

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
6:36 am - 3:02 pm
IDA
-
TYS
6h 26m
1 stop
United Airlines Logo
7:00 am - 1:30 pm
TYS
-
IDA
8h 30m
2 stops
$610United Airlines
Wed, Mar 11 - Sat, Mar 14
American Airlines Logo
2:18 pm - 12:28 am
IDA
-
TYS
8h 10m
1 stop
American Airlines Logo
12:21 pm - 11:24 pm
TYS
-
IDA
13h 03m
2 stops
$729American Airlines
Wed, Feb 25 - Sun, Mar 1
Delta Logo
1:10 pm - 11:57 pm
IDA
-
TYS
8h 47m
2 stops
Delta Logo
5:40 am - 12:27 pm
TYS
-
IDA
8h 47m
2 stops
$789Delta
Wed, Mar 11 - Sat, Mar 14
American Airlines Logo
2:18 pm - 11:55 pm
IDA
-
TYS
7h 37m
1 stop
American Airlines Logo
11:42 am - 11:24 pm
TYS
-
IDA
13h 42m
2 stops
$803American Airlines
Fri, Feb 27 - Mon, Mar 2
American Airlines Logo
6:03 am - 11:59 pm
IDA
-
TYS
15h 56m
2 stops
American Airlines Logo
12:21 pm - 11:24 pm
TYS
-
IDA
13h 03m
2 stops
$815American Airlines
Wed, Feb 25 - Sun, Mar 1
United Airlines Logo
6:36 am - 3:02 pm
IDA
-
TYS
6h 26m
1 stop
United Airlines Logo
4:18 pm - 9:06 pm
TYS
-
IDA
6h 48m
1 stop
$843United Airlines
Wed, Mar 11 - Sat, Mar 14
United Airlines Logo
6:36 am - 3:02 pm
IDA
-
TYS
6h 26m
1 stop
United Airlines Logo
7:00 am - 1:30 pm
TYS
-
IDA
8h 30m
2 stops
$848United Airlines
Wed, Mar 11 - Sun, Mar 15
American Airlines Logo
2:18 pm - 11:51 pm
IDA
-
TYS
7h 33m
1 stop
American Airlines Logo
12:21 pm - 11:24 pm
TYS
-
IDA
13h 03m
2 stops
$874American Airlines
Thu, Mar 19 - Tue, Mar 24
American Airlines Logo
2:18 pm - 5:31 pm
IDA
-
TYS
25h 13m
1 stop
American Airlines Logo
6:21 pm - 1:48 pm
TYS
-
IDA
21h 27m
1 stop
$883American Airlines
Fri, Feb 27 - Mon, Mar 2
American Airlines Logo
2:18 pm - 11:31 am
IDA
-
TYS
19h 13m
1 stop
American Airlines Logo
5:40 am - 1:48 pm
TYS
-
IDA
10h 08m
1 stop
$886American Airlines
Wed, Feb 25 - Sun, Mar 1

United Airlines flights from Idaho Falls to Knoxville

Our best United Airlines deals on Idaho Falls to Knoxville flight tickets
United Airlines
Mar 11
IDA6:36 amIdaho Falls Fanning Field
6h 26m
1 stop
TYS3:02 pmKnoxville McGhee Tyson
Mar 14
TYS7:00 amKnoxville McGhee Tyson
8h 30m
2 stops
IDA1:30 pmIdaho Falls Fanning Field
$610
United Airlines
Mar 11
IDA6:36 amIdaho Falls Fanning Field
6h 26m
1 stop
TYS3:02 pmKnoxville McGhee Tyson
Mar 14
TYS4:18 pmKnoxville McGhee Tyson
6h 48m
1 stop
IDA9:06 pmIdaho Falls Fanning Field
$843
United Airlines
Mar 11
IDA6:36 amIdaho Falls Fanning Field
6h 26m
1 stop
TYS3:02 pmKnoxville McGhee Tyson
Mar 15
TYS7:00 amKnoxville McGhee Tyson
8h 30m
2 stops
IDA1:30 pmIdaho Falls Fanning Field
$848

American Airlines flights from Idaho Falls to Knoxville

Our best American Airlines deals on Idaho Falls to Knoxville flight tickets
American Airlines
Feb 25
IDA2:18 pmIdaho Falls Fanning Field
8h 10m
1 stop
TYS12:28 amKnoxville McGhee Tyson
Mar 1
TYS12:21 pmKnoxville McGhee Tyson
13h 03m
2 stops
IDA11:24 pmIdaho Falls Fanning Field
$729
American Airlines
Feb 27
IDA2:18 pmIdaho Falls Fanning Field
7h 37m
1 stop
TYS11:55 pmKnoxville McGhee Tyson
Mar 2
TYS11:42 amKnoxville McGhee Tyson
13h 42m
2 stops
IDA11:24 pmIdaho Falls Fanning Field
$803
American Airlines
Feb 25
IDA6:03 amIdaho Falls Fanning Field
15h 56m
2 stops
TYS11:59 pmKnoxville McGhee Tyson
Mar 1
TYS12:21 pmKnoxville McGhee Tyson
13h 03m
2 stops
IDA11:24 pmIdaho Falls Fanning Field
$815

momondo Fare Finder

 
Customize your flight search to find flights from Idaho Falls to Knoxville that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated February 13, 2026.
Use the filters below to find and compare flights from Idaho Falls to Knoxville that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Idaho FallsKnoxville

IDA - TYS

IDATYS

Idaho Falls Fanning Field

Wed 3/11

6:36 am-3:02 pm

1 stop6h 26m

Knoxville McGhee Tyson

Sat 3/14

7:00 am-1:30 pm

2 stops8h 30m

$610

Idaho FallsKnoxville

IDA - TYS

IDATYS

Idaho Falls Fanning Field

Wed 2/25

2:18 pm-12:28 am

1 stop8h 10m

Knoxville McGhee Tyson

Sun 3/1

12:21 pm-11:24 pm

2 stops13h 03m

$729

Idaho FallsKnoxville

IDA - TYS

IDATYS

Idaho Falls Fanning Field

Wed 3/11

1:10 pm-11:57 pm

2 stops8h 47m

Knoxville McGhee Tyson

Sat 3/14

5:40 am-12:27 pm

2 stops8h 47m

$789

Idaho FallsKnoxville

IDA - TYS

IDATYS

Idaho Falls Fanning Field

Fri 2/27

2:18 pm-11:55 pm

1 stop7h 37m

Knoxville McGhee Tyson

Mon 3/2

11:42 am-11:24 pm

2 stops13h 42m

$803

Idaho FallsKnoxville

IDA - TYS

IDATYS

Idaho Falls Fanning Field

Wed 2/25

6:03 am-11:59 pm

2 stops15h 56m

Knoxville McGhee Tyson

Sun 3/1

12:21 pm-11:24 pm

2 stops13h 03m

$815

Idaho FallsKnoxville

IDA - TYS

IDATYS

Idaho Falls Fanning Field

Wed 3/11

6:36 am-3:02 pm

1 stop6h 26m

Knoxville McGhee Tyson

Sat 3/14

4:18 pm-9:06 pm

1 stop6h 48m

$843

Idaho FallsKnoxville

IDA - TYS

IDATYS

Idaho Falls Fanning Field

Wed 3/11

6:36 am-3:02 pm

1 stop6h 26m

Knoxville McGhee Tyson

Sun 3/15

7:00 am-1:30 pm

2 stops8h 30m

$848

Idaho FallsKnoxville

IDA - TYS

IDATYS

Idaho Falls Fanning Field

Thu 3/19

2:18 pm-11:51 pm

1 stop7h 33m

Knoxville McGhee Tyson

Tue 3/24

12:21 pm-11:24 pm

2 stops13h 03m

$874

Idaho FallsKnoxville

IDA - TYS

IDATYS

Idaho Falls Fanning Field

Fri 2/27

2:18 pm-5:31 pm

1 stop25h 13m

Knoxville McGhee Tyson

Mon 3/2

6:21 pm-1:48 pm

1 stop21h 27m

$883

Idaho FallsKnoxville

IDA - TYS

IDATYS

Idaho Falls Fanning Field

Wed 2/25

2:18 pm-11:31 am

1 stop19h 13m

Knoxville McGhee Tyson

Sun 3/1

5:40 am-1:48 pm

1 stop10h 08m

$886

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 13 resultsSorted by cheapest first
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How to get the cheapest flight ticket from Idaho Falls to Knoxville

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

Can stopping save me money on Idaho Falls to Knoxville flights?

You could potentially save up to 7% on your flight if you consider stops on a Idaho Falls to Knoxville flight.

When to book flights from Idaho Falls to Knoxville

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

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

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

Fastest flight time

5h 55m

Direct flights

None
The fastest flight from Idaho Falls to Knoxville takes 5h 55m
There are no direct flights from Idaho Falls to Knoxville. There are no popular flight routes from Idaho Falls to Knoxville.
Search flight deals

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

    A flight from Idaho Falls Fanning Field to Knoxville McGhee Tyson will travel around 1571.6 mi. A reasonable flight in good conditions will take 5h 55m.

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

    Prices for flights from Idaho Falls Fanning Field Airport to Knoxville McGhee Tyson Airport refresh daily.

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

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

  • What documentation or ID do you need to fly to Knoxville McGhee Tyson Airport?

    The travel and health documents you'll need for your trip to Knoxville McGhee Tyson Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Knoxville McGhee Tyson Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

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

Best airlines flying from Idaho Falls to Knoxville

Compare and see reviews for airlines that fly from Idaho Falls to Knoxville with momondo
Airline
Rating
Free Cancellation
Price
American AirlinesPriceFrom $288Free CancellationRating
7.2
11,288 reviews
Search American Airlines flights
United AirlinesPriceFrom $373Free CancellationRating
7.4
9,289 reviews
Search United Airlines flights

Traveling to a place near Knoxville?

Book flights to Knoxville if you plan to visit one of these locations
Pigeon Forge
Gatlinburg
Cherokee
Bryson City
Morristown
Corbin
Maryville
Alcoa
Crossville
Murphy
Oak Ridge
Lenoir City
Newport
Kodak
Dandridge
Jefferson City
Clinton
Rockford

Why use momondo?

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Idaho Falls to Knoxville for you.

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

Yes. All flights to Knoxville from Idaho Falls on momondo can be compared and filtered by various policies on offer, including flexible booking.

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

Once all potential Idaho Falls to Knoxville flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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

Yes momondo offers price alerts on flights to Knoxville from Idaho Falls. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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