IDA - TYS

$248 Find Cheap Flights from Idaho Falls to Knoxville - Compare and Save

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1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
$379
Typical prices: $468-$737
American Airlines
Wed 10/24Mon 10/29
IDA - TYS • 1 stop
Cheapest one-way
$248
Typical prices: $290-$364
Multiple Airlines
Tue 10/16
IDA - TYS • 2 stops
Nonstop flights
Not available
There are currently no direct flights between Idaho Falls and Knoxville. You'll need to take a connecting flight to reach the destination.
Insights
Insights
When to travel
November
Cheapest • 31% price drop
October
Most popular
Good to know
+1
Good to know
+1
Top layover airports
Denver Intl (DEN)
Cheapest • Avg $566 (round-trip)
Chicago O'Hare Intl (ORD)
Shortest trip • 6h 35m (one-way)
Insights
Insights
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Flight Deals

Cheap Flights from Idaho Falls to Knoxville (IDA-TYS)

 
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Idaho Falls to Knoxville

Sat, Oct 24 - Thu, Oct 29
American Airlines Logo
1:39 pm - 11:18 pmIDA  Idaho Falls Fanning Field-TYS Knoxville McGhee Tyson
7h 39m1 stop Dallas/Fort Worth
American Airlines Logo
7:25 am - 1:09 pmTYS  Knoxville McGhee Tyson-IDA Idaho Falls Fanning Field
7h 44m1 stop Dallas/Fort Worth
$379American Airlines
Sat, Jan 23 - Wed, Jan 27
American Airlines Logo
6:22 am - 11:11 pmIDA  Idaho Falls Fanning Field-TYS Knoxville McGhee Tyson
14h 49m2 stops Phoenix Sky Harbor Intl Dallas/Fort Worth
American Airlines Logo
2:53 pm - 9:52 pmTYS  Knoxville McGhee Tyson-IDA Idaho Falls Fanning Field
8h 59m1 stop Dallas/Fort Worth
$384American Airlines
Sat, Jan 23 - Wed, Jan 27
American Airlines Logo
6:22 am - 11:11 pmIDA  Idaho Falls Fanning Field-TYS Knoxville McGhee Tyson
14h 49m2 stops Phoenix Sky Harbor Intl Dallas/Fort Worth
American Airlines Logo
2:53 pm - 10:58 pmTYS  Knoxville McGhee Tyson-IDA Idaho Falls Fanning Field
10h 05m2 stops Dallas/Fort Worth Phoenix Sky Harbor Intl
$389American Airlines
Sat, Jan 23 - Wed, Jan 27
American Airlines Logo
7:00 am - 5:54 pmIDA  Idaho Falls Fanning Field-TYS Knoxville McGhee Tyson
8h 54m1 stop Dallas/Fort Worth
American Airlines Logo
8:00 am - 1:15 pmTYS  Knoxville McGhee Tyson-IDA Idaho Falls Fanning Field
7h 15m1 stop Dallas/Fort Worth
$414American Airlines
Sat, Oct 24 - Thu, Oct 29
United Airlines Logo
2:28 pm - 10:14 pmIDA  Idaho Falls Fanning Field-TYS Knoxville McGhee Tyson
5h 46m1 stop Denver Intl
United Airlines Logo
6:45 am - 1:28 pmTYS  Knoxville McGhee Tyson-IDA Idaho Falls Fanning Field
8h 43m2 stops Chicago O'Hare Intl Denver Intl
$418United Airlines
Sat, Jan 30 - Wed, Feb 3
United Airlines Logo
7:00 am - 2:36 pmIDA  Idaho Falls Fanning Field-TYS Knoxville McGhee Tyson
5h 36m1 stop Denver Intl
United Airlines Logo
4:25 pm - 9:08 pmTYS  Knoxville McGhee Tyson-IDA Idaho Falls Fanning Field
6h 43m1 stop Denver Intl
$479United Airlines
Sat, Jan 30 - Wed, Feb 3
United Airlines Logo
7:00 am - 5:03 pmIDA  Idaho Falls Fanning Field-TYS Knoxville McGhee Tyson
8h 03m2 stops Denver Intl Chicago O'Hare Intl
United Airlines Logo
4:25 pm - 9:08 pmTYS  Knoxville McGhee Tyson-IDA Idaho Falls Fanning Field
6h 43m1 stop Denver Intl
$484United Airlines
Sat, Oct 17 - Tue, Oct 20
Delta Logo
6:00 am - 9:34 amIDA  Idaho Falls Fanning Field-TYS Knoxville McGhee Tyson
25h 34m2 stops Salt Lake City Atlanta Hartsfield-Jackson
Delta Logo
12:06 pm - 10:10 pmTYS  Knoxville McGhee Tyson-IDA Idaho Falls Fanning Field
12h 04m2 stops Atlanta Hartsfield-Jackson Salt Lake City
$731Delta
Fri, Oct 16 - Tue, Oct 20
Delta Logo
6:56 pm - 10:22 pmIDA  Idaho Falls Fanning Field-TYS Knoxville McGhee Tyson
25h 26m2 stops Salt Lake City Atlanta Hartsfield-Jackson
Delta Logo
5:40 am - 6:16 pmTYS  Knoxville McGhee Tyson-IDA Idaho Falls Fanning Field
14h 36m2 stops Atlanta Hartsfield-Jackson Salt Lake City
$747Delta
Sun, Oct 25 - Thu, Oct 29
Delta Logo
6:56 pm - 9:34 amIDA  Idaho Falls Fanning Field-TYS Knoxville McGhee Tyson
12h 38m2 stops Salt Lake City Atlanta Hartsfield-Jackson
Delta Logo
10:29 am - 10:10 pmTYS  Knoxville McGhee Tyson-IDA Idaho Falls Fanning Field
13h 41m2 stops Atlanta Hartsfield-Jackson Salt Lake City
$787Delta
Booking Insights

Price, demand and travel trends for Idaho Falls to Knoxville flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights from Idaho Falls to Knoxville with more confidence.

How much is a round-trip flight from Idaho Falls to Knoxville?

Round-trip flights from Idaho Falls to Knoxville start at $379. Prices are below average for this route right now, with typical round-trip fares ranging from $468 to $737. The lowest price found in the past 5 days was $379 on American Airlines.

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Key details for Idaho Falls to Knoxville flights

Low season

February

Cheapest flight

$248
Best time to beat the crowds but there is an average 7% increase in price.
Most popular time to fly and prices are also 22% lower on average.
Flight from Idaho Falls to Knoxville

When to book flights from Idaho Falls to Knoxville

Are your dates flexible? Find out the best times to travel from Idaho Falls to Knoxville based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price

Your Idaho Falls to Knoxville flight questions, answered

Find helpful route details based on KAYAK data, including flight times, airports, airlines and booking questions.

  • Which airports can I use when flying from Idaho Falls to Knoxville?

    Flights from Idaho Falls to Knoxville usually depart from Idaho Falls Fanning Field (IDA) and arrive at Knoxville McGhee Tyson (TYS).

  • What cabin classes can I book on flights from Idaho Falls to Knoxville?

    Two cabin classes are available on flights from Idaho Falls to Knoxville:

    • Economy Class
    • First Class

  • Which airports do connecting flights from Idaho Falls to Knoxville pass through?

    One-stop flights from Idaho Falls to Knoxville most commonly connect through:

    • Denver Intl (DEN) - 50% of one-stop connections
    • Dallas/Fort Worth (DFW) - 38% of one-stop connections
    • Chicago O'Hare Intl (ORD) - 12% of one-stop connections

    Denver Intl (DEN) handles the largest share of one-stop connections on this route.

  • Can I save money by using flexible dates for flights from Idaho Falls to Knoxville?

    Yes. Being flexible with your travel dates can save you up to 40% on the Idaho Falls to Knoxville route. Tuesday is the cheapest departure day at $468 round-trip on average, while Sunday is the most expensive at $776, a difference of $308. KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

  • How long is a flight from Idaho Falls to Knoxville?

    A nonstop flight from Idaho Falls to Knoxville takes 0h 00m, covering 1,575 miles.

  • Do I need a passport to fly from Idaho Falls to Knoxville?

    No, a passport is not required for this domestic route, but you will need a real ID-compliant driver's license, a state ID, or another TSA-accepted form of identification.

  • Have flight prices from Idaho Falls to Knoxville changed much recently?

    Yes. Based on fares seen in the past 5 days, round-trip prices on this route showed a wide range, from about $379 to $1,663. That means the highest observed fare was about 4x higher than the lowest one.

  • How are flight prices from Idaho Falls to Knoxville looking right now?

    One-way fares from Idaho Falls to Knoxville are currently higher than usual. Average one-way flight prices are about $409, which is 27% above the typical average for this route.

  • How much time can I save by choosing a different layover airport from Idaho Falls to Knoxville?

    Flying via Denver Intl (DEN) gives the shortest average 1-stop total travel time at 6h 17m, compared with 6h 35m via Chicago O'Hare Intl (ORD) and 8h 25m via Dallas/Fort Worth (DFW).

  • What is the time difference between Idaho Falls and Knoxville?

    Knoxville is 2 hours ahead of Idaho Falls (Eastern Time vs Mountain Time). Plan for the time shift when scheduling connections or first-day activities.

  • What car rental options are available at Knoxville McGhee Tyson Airport (TYS)?

    Knoxville McGhee Tyson Airport (TYS) hosts 5 major car rental companies, with daily rates starting from around $33 for economy cars. Top options include:
    • Budget
    • Alamo
    • Thrifty
    • Enterprise Rent-A-Car
    • Payless

  • How much should I expect to pay for a Idaho Falls to Knoxville flight?

    Round-trip flights from Idaho Falls to Knoxville range from $468 to $737, with an average of $600 over the past 12 months. Anything below $468 counts as a good deal.

Your guide to booking Idaho Falls to Knoxville flights

Get tips on when to book, when to fly and what to know before your trip.
  • If your dates can be flexible, aim for a Tuesday departure instead of Sunday. On this route, Tuesday flights average $468 - about $308 less than Sunday (40% savings) based on the last 12 months.
  • If you can choose when to travel, plan your Idaho Falls to Knoxville trip for November. Fares historically average $412 round-trip in that month - typically $747 less than the most expensive month, which is May (based on the last 12 months).

More options for your flight from Idaho Falls to Knoxville

Complete your trip to Knoxville with a hotel stay or car rental

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