IDA - TYS

$327 Find Cheap Flights from Idaho Falls to Knoxville - Compare and Save

1 adult
1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
$449
Typical prices: $510-$817
American Airlines
Wed 11/14Sun 11/18
IDA - TYS • 1 stop
Cheapest one-way
$327
Typical prices: $320-$415
Multiple Airlines
Mon 3/5
IDA - TYS • 3 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
October
Cheapest • 64% price drop
January
Most popular
Good to know
+1
Good to know
+1
Top layover airports
Denver Intl (DEN)
Cheapest • Avg $681 (round-trip)
Chicago O'Hare Intl (ORD)
Shortest trip • 6h 46m (one-way)
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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, Nov 14 - Wed, Nov 18
American Airlines Logo
8:00 am - 6:35 pmIDA  Idaho Falls Fanning Field-TYS Knoxville McGhee Tyson
8h 35m1 stop Dallas/Fort Worth
American Airlines Logo
6:50 am - 1:05 pmTYS  Knoxville McGhee Tyson-IDA Idaho Falls Fanning Field
8h 15m1 stop Dallas/Fort Worth
$449American Airlines
Sat, Nov 14 - Wed, Nov 18
American Airlines Logo
8:00 am - 4:42 pmIDA  Idaho Falls Fanning Field-TYS Knoxville McGhee Tyson
6h 42m1 stop Dallas/Fort Worth
American Airlines Logo
12:20 pm - 10:59 pmTYS  Knoxville McGhee Tyson-IDA Idaho Falls Fanning Field
12h 39m2 stops Charlotte Douglas Phoenix Sky Harbor Intl
$454American Airlines
Sat, Nov 14 - Wed, Nov 18
American Airlines Logo
6:36 am - 9:39 pmIDA  Idaho Falls Fanning Field-TYS Knoxville McGhee Tyson
13h 03m2 stops Phoenix Sky Harbor Intl Dallas/Fort Worth
American Airlines Logo
2:13 pm - 10:59 pmTYS  Knoxville McGhee Tyson-IDA Idaho Falls Fanning Field
10h 46m2 stops Charlotte Douglas Phoenix Sky Harbor Intl
$459American Airlines
Sun, Apr 18 - Sat, Apr 24
Delta Logo
6:45 pm - 9:12 amIDA  Idaho Falls Fanning Field-TYS Knoxville McGhee Tyson
12h 27m2 stops Salt Lake City Atlanta Hartsfield-Jackson
Delta Logo
5:30 am - 12:27 pmTYS  Knoxville McGhee Tyson-IDA Idaho Falls Fanning Field
8h 57m2 stops Atlanta Hartsfield-Jackson Salt Lake City
$479Delta
Sat, Jan 30 - Wed, Feb 3
United Airlines Logo
7:00 am - 2:56 pmIDA  Idaho Falls Fanning Field-TYS Knoxville McGhee Tyson
5h 56m1 stop Denver Intl
United Airlines Logo
4:28 pm - 9:10 pmTYS  Knoxville McGhee Tyson-IDA Idaho Falls Fanning Field
6h 42m1 stop Denver Intl
$499United Airlines
Sat, Jan 30 - Wed, Feb 3
United Airlines Logo
7:00 am - 2:56 pmIDA  Idaho Falls Fanning Field-TYS Knoxville McGhee Tyson
5h 56m1 stop Denver Intl
United Airlines Logo
10:45 am - 9:10 pmTYS  Knoxville McGhee Tyson-IDA Idaho Falls Fanning Field
12h 25m2 stops Chicago O'Hare Intl Denver Intl
$504United Airlines
Sat, Jan 30 - Wed, Feb 3
United Airlines Logo
7:00 am - 9:59 pmIDA  Idaho Falls Fanning Field-TYS Knoxville McGhee Tyson
12h 59m2 stops Denver Intl Houston George Bush Intcntl
United Airlines Logo
9:45 am - 9:10 pmTYS  Knoxville McGhee Tyson-IDA Idaho Falls Fanning Field
13h 25m2 stops Washington, D.C. Dulles Intl Denver Intl
$509United Airlines
Sun, Apr 18 - Sat, Apr 24
American Airlines Logo
1:43 pm - 11:55 pmIDA  Idaho Falls Fanning Field-TYS Knoxville McGhee Tyson
8h 12m1 stop Dallas/Fort Worth
American Airlines Logo
5:44 am - 1:13 pmTYS  Knoxville McGhee Tyson-IDA Idaho Falls Fanning Field
9h 29m1 stop Dallas/Fort Worth
$549American Airlines
Fri, Feb 19 - Tue, Feb 23
Delta Logo
6:59 pm - 9:17 amIDA  Idaho Falls Fanning Field-TYS Knoxville McGhee Tyson
12h 18m2 stops Salt Lake City Atlanta Hartsfield-Jackson
Delta Logo
7:10 am - 6:19 pmTYS  Knoxville McGhee Tyson-IDA Idaho Falls Fanning Field
13h 09m2 stops Detroit Metropolitan Wayne County Salt Lake City
$1,508Delta
Fri, Feb 19 - Tue, Feb 23
Delta Logo
6:45 pm - 9:12 amIDA  Idaho Falls Fanning Field-TYS Knoxville McGhee Tyson
12h 27m2 stops Salt Lake City Atlanta Hartsfield-Jackson
Delta Logo
7:30 am - 6:14 pmTYS  Knoxville McGhee Tyson-IDA Idaho Falls Fanning Field
12h 44m2 stops Detroit Metropolitan Wayne County Salt Lake City
$1,558Delta
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 with more confidence.

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

Round-trip flights from Idaho Falls to Knoxville typically range from $510 to $817. The lowest price found in the past 5 days was $449, on American Airlines.

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Key details for Idaho Falls to Knoxville flights

Low season

July

Cheapest flight

$327
Beat the crowds with an average 51% drop in travelers.
The most popular month to fly with an average 23% increase in travelers.
One-way 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 answers about this route, including flight times, airports, airlines and booking tips.

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

    Only Economy Class is available on flights from Idaho Falls to Knoxville.

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

    A nonstop flight from Idaho Falls to Knoxville takes 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.

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

    Round-trip flights from Idaho Falls to Knoxville range from $510 to $817, with an average of $652 over the past 12 months. Anything below $510 counts as a good deal.

  • 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 $449 to $1,657. 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 in line with typical prices for this route. Average one-way fares are about $363.

  • 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 averaging $82 for economy cars. Top options include:

    • Budget
    • Alamo
    • Enterprise Rent-A-Car
    • Thrifty
    • Avis

  • 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).

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

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

    • Dallas/Fort Worth (DFW) - 55% of one-stop connections
    • Denver Intl (DEN) - 35% of one-stop connections
    • Chicago O'Hare Intl (ORD) - 10% of one-stop connections

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

    Yes. Flexible dates can save you up to 38% on flights from Idaho Falls to Knoxville. Friday is the cheapest departure day at $510 round-trip on average, while Wednesday is the most expensive at $817, a difference of $307.

    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 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 24m, compared with 6h 46m via Chicago O'Hare Intl (ORD) and 8h 26m 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.

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 are flexible, aim for a Friday departure and avoid flying on Wednesday. On this route, Friday flights average $510, about $307 less than Wednesday fares (38% savings) based on the last 12 months.
  • If you can choose when to travel, plan your Idaho Falls to Knoxville trip for October. Fares historically average $236 round-trip in that month - typically $923 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

Car rentals in Knoxville
Hotels in Knoxville
Vacations in Knoxville