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Cheap flights from Idaho Falls to Knoxville from $238

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 6/1. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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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.
Delta Logo
6:54 pm - 9:34 am
IDA
-
TYS
12h 40m
2 stops
Delta Logo
6:36 am - 6:14 pm
TYS
-
IDA
13h 38m
2 stops
$518Delta
Mon, May 11 - Sat, May 16
American Airlines Logo
2:20 pm - 11:18 pm
IDA
-
TYS
6h 58m
1 stop
American Airlines Logo
6:00 am - 11:32 am
TYS
-
IDA
7h 32m
1 stop
$552American Airlines
Sun, Sep 20 - Sat, Sep 26
American Airlines Logo
2:08 pm - 11:56 pm
IDA
-
TYS
7h 48m
1 stop
American Airlines Logo
5:33 pm - 10:15 pm
TYS
-
IDA
6h 42m
1 stop
$565American Airlines
Mon, Jun 1 - Thu, Jun 4
American Airlines Logo
2:14 pm - 11:56 pm
IDA
-
TYS
7h 42m
1 stop
American Airlines Logo
5:36 am - 12:14 pm
TYS
-
IDA
8h 38m
1 stop
$567American Airlines
Tue, Jun 16 - Tue, Jun 23
American Airlines Logo
7:48 am - 10:25 pm
IDA
-
TYS
12h 37m
2 stops
American Airlines Logo
11:40 am - 11:39 pm
TYS
-
IDA
13h 59m
2 stops
$574American Airlines
Sat, May 9 - Sat, May 16
United Airlines Logo
2:31 pm - 10:23 pm
IDA
-
TYS
5h 52m
1 stop
United Airlines Logo
7:18 pm - 9:55 am
TYS
-
IDA
16h 37m
2 stops
$580United Airlines
Sat, May 9 - Tue, May 12
United Airlines Logo
2:31 pm - 10:23 pm
IDA
-
TYS
5h 52m
1 stop
United Airlines Logo
4:20 pm - 9:03 pm
TYS
-
IDA
6h 43m
1 stop
$581United Airlines
Sat, May 9 - Tue, May 12
American Airlines Logo
1:43 pm - 11:56 pm
IDA
-
TYS
8h 13m
1 stop
American Airlines Logo
1:20 pm - 11:39 pm
TYS
-
IDA
12h 19m
2 stops
$598American Airlines
Mon, Apr 27 - Fri, May 1
American Airlines Logo
1:43 pm - 11:56 pm
IDA
-
TYS
8h 13m
1 stop
American Airlines Logo
6:00 am - 1:13 pm
TYS
-
IDA
9h 13m
1 stop
$603American Airlines
Mon, Apr 27 - Fri, May 1
United Airlines Logo
2:31 pm - 10:23 pm
IDA
-
TYS
5h 52m
1 stop
United Airlines Logo
9:12 am - 3:43 pm
TYS
-
IDA
8h 31m
1 stop
$618United Airlines
Sat, May 9 - Sat, May 16

United Airlines flights from Idaho Falls to Knoxville

Our best United Airlines deals on Idaho Falls to Knoxville flight tickets
United Airlines
May 9
IDA2:31 pmIdaho Falls Fanning Field
5h 52m
1 stop
TYS10:23 pmKnoxville McGhee Tyson
May 12
TYS7:18 pmKnoxville McGhee Tyson
16h 37m
2 stops
IDA9:55 amIdaho Falls Fanning Field
$580
United Airlines
May 9
IDA2:31 pmIdaho Falls Fanning Field
5h 52m
1 stop
TYS10:23 pmKnoxville McGhee Tyson
May 12
TYS4:20 pmKnoxville McGhee Tyson
6h 43m
1 stop
IDA9:03 pmIdaho Falls Fanning Field
$581
United Airlines
Apr 24
IDA2:30 pmIdaho Falls Fanning Field
5h 59m
1 stop
TYS10:29 pmKnoxville McGhee Tyson
Apr 28
TYS4:30 pmKnoxville McGhee Tyson
6h 34m
1 stop
IDA9:04 pmIdaho Falls Fanning Field
$583

American Airlines flights from Idaho Falls to Knoxville

Our best American Airlines deals on Idaho Falls to Knoxville flight tickets
American Airlines
Apr 24
IDA7:48 amIdaho Falls Fanning Field
12h 36m
2 stops
TYS10:24 pmKnoxville McGhee Tyson
Apr 28
TYS6:00 amKnoxville McGhee Tyson
9h 13m
1 stop
IDA1:13 pmIdaho Falls Fanning Field
$529
American Airlines
Apr 24
IDA7:48 amIdaho Falls Fanning Field
12h 36m
2 stops
TYS10:24 pmKnoxville McGhee Tyson
Apr 28
TYS5:00 amKnoxville McGhee Tyson
10h 13m
2 stops
IDA1:13 pmIdaho Falls Fanning Field
$534
American Airlines
Sep 20
IDA2:20 pmIdaho Falls Fanning Field
6h 58m
1 stop
TYS11:18 pmKnoxville McGhee Tyson
Sep 26
TYS6:00 amKnoxville McGhee Tyson
7h 32m
1 stop
IDA11:32 amIdaho Falls Fanning Field
$552

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 April 17, 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

Cheapest round-trip

Idaho FallsKnoxville

IDA - TYS

IDATYS

Idaho Falls Fanning Field

Mon 5/11

6:54 pm-9:34 am

2 stops12h 40m

Knoxville McGhee Tyson

Sat 5/16

6:36 am-6:14 pm

2 stops13h 38m

$518

Idaho FallsKnoxville

IDA - TYS

IDATYS

Idaho Falls Fanning Field

Sun 9/20

2:20 pm-11:18 pm

1 stop6h 58m

Knoxville McGhee Tyson

Sat 9/26

6:00 am-11:32 am

1 stop7h 32m

$552

Idaho FallsKnoxville

IDA - TYS

IDATYS

Idaho Falls Fanning Field

Mon 6/1

2:08 pm-11:56 pm

1 stop7h 48m

Knoxville McGhee Tyson

Thu 6/4

5:33 pm-10:15 pm

1 stop6h 42m

$565

Idaho FallsKnoxville

IDA - TYS

IDATYS

Idaho Falls Fanning Field

Tue 6/16

2:14 pm-11:56 pm

1 stop7h 42m

Knoxville McGhee Tyson

Tue 6/23

5:36 am-12:14 pm

1 stop8h 38m

$567

Idaho FallsKnoxville

IDA - TYS

IDATYS

Idaho Falls Fanning Field

Sat 5/9

7:48 am-10:25 pm

2 stops12h 37m

Knoxville McGhee Tyson

Sat 5/16

11:40 am-11:39 pm

2 stops13h 59m

$574

Idaho FallsKnoxville

IDA - TYS

IDATYS

Idaho Falls Fanning Field

Sat 5/9

2:31 pm-10:23 pm

1 stop5h 52m

Knoxville McGhee Tyson

Tue 5/12

7:18 pm-9:55 am

2 stops16h 37m

$580
Quickest round-trip

Idaho FallsKnoxville

IDA - TYS

IDATYS

Idaho Falls Fanning Field

Sat 5/9

2:31 pm-10:23 pm

1 stop5h 52m

Knoxville McGhee Tyson

Tue 5/12

4:20 pm-9:03 pm

1 stop6h 43m

$581

Idaho FallsKnoxville

IDA - TYS

IDATYS

Idaho Falls Fanning Field

Mon 4/27

1:43 pm-11:56 pm

1 stop8h 13m

Knoxville McGhee Tyson

Fri 5/1

1:20 pm-11:39 pm

2 stops12h 19m

$598

Idaho FallsKnoxville

IDA - TYS

IDATYS

Idaho Falls Fanning Field

Mon 4/27

1:43 pm-11:56 pm

1 stop8h 13m

Knoxville McGhee Tyson

Fri 5/1

6:00 am-1:13 pm

1 stop9h 13m

$603

Idaho FallsKnoxville

IDA - TYS

IDATYS

Idaho Falls Fanning Field

Sat 5/9

2:31 pm-10:23 pm

1 stop5h 52m

Knoxville McGhee Tyson

Sat 5/16

9:12 am-3:43 pm

1 stop8h 31m

$618

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 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

What is the typical price of a round-trip flight between Idaho Falls and Knoxville?

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

You could potentially save up to 1% 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 52m

Direct flights

None
The fastest flight from Idaho Falls to Knoxville takes 5h 52m
There are no direct flights from Idaho Falls to Knoxville. There are no popular flight routes from Idaho Falls to Knoxville.
Search flight deals

Frequently asked questions about flying from Idaho Falls to Knoxville

  • 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 52m.

  • 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 $329Free CancellationRating
7.1
11,593 reviews
Search American Airlines flights
United AirlinesPriceFrom $373Free CancellationRating
7.4
9,602 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
Crossville
Alcoa
Murphy
Oak Ridge
Lenoir City
Newport
Kodak
Dandridge
Clinton
Jefferson City
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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