$184 Find Cheap Flights from Knoxville to Idaho

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Knoxville to Idaho departing on 3/29. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Idaho

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Knoxville to Idaho, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Knoxville to Idaho, as well as popular online travel agencies
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Cheap Flights from Knoxville to Idaho

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Boise
Boise2 stops$394
Idaho Falls
Idaho Falls1 stop$473
Lewiston
Lewiston2 stops$1,782
Spokane
Spokane1 stop$389
Boise
Boise2 stops$394
Idaho Falls
Idaho Falls1 stop$473
Lewiston
Lewiston2 stops$1,782
Spokane
Spokane1 stop$389

Book Cheap Knoxville to Idaho Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Knoxville to Idaho that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Knoxville to Idaho

Tue, Apr 7 - Tue, Apr 14
United Airlines Logo
4:30 pm - 8:53 pm
TYS
-
JAC
6h 23m
1 stop
United Airlines Logo
7:00 am - 3:06 pm
JAC
-
TYS
6h 06m
1 stop
$359United Airlines
Tue, Apr 7 - Tue, Apr 14
United Airlines Logo
10:49 am - 8:53 pm
TYS
-
JAC
12h 04m
2 stops
United Airlines Logo
7:00 am - 3:06 pm
JAC
-
TYS
6h 06m
1 stop
$364United Airlines
Wed, Mar 4 - Wed, Mar 11
American Airlines Logo
7:51 am - 11:44 am
TYS
-
GEG
6h 53m
1 stop
American Airlines Logo
6:00 am - 5:31 pm
GEG
-
TYS
8h 31m
1 stop
$389American Airlines
Wed, Mar 4 - Wed, Mar 11
American Airlines Logo
12:21 pm - 11:14 pm
TYS
-
GEG
13h 53m
2 stops
American Airlines Logo
6:00 am - 5:31 pm
GEG
-
TYS
8h 31m
1 stop
$394American Airlines
Tue, Jun 16 - Tue, Jun 23
Delta Logo
3:20 pm - 11:56 pm
TYS
-
BOI
10h 36m
2 stops
Delta Logo
11:30 pm - 9:11 am
BOI
-
TYS
7h 41m
1 stop
$394Delta
Tue, Apr 7 - Tue, Apr 14
United Airlines Logo
7:00 am - 3:24 pm
TYS
-
JAC
10h 24m
2 stops
United Airlines Logo
7:00 am - 7:42 pm
JAC
-
TYS
10h 42m
2 stops
$395United Airlines
Tue, Mar 10 - Tue, Mar 17
Southwest Logo
2:25 pm - 12:10 am
TYS
-
GEG
12h 45m
2 stops
Southwest Logo
7:00 am - 8:05 pm
GEG
-
TYS
10h 05m
2 stops
$399Southwest
Wed, Mar 4 - Wed, Mar 11
Delta Logo
5:35 am - 1:08 pm
TYS
-
GEG
10h 33m
2 stops
Delta Logo
7:45 pm - 10:31 am
GEG
-
TYS
11h 46m
2 stops
$423Delta
Tue, Jun 16 - Tue, Jun 23
Southwest Logo
5:40 pm - 12:25 am
TYS
-
BOI
8h 45m
2 stops
Southwest Logo
6:00 am - 6:20 pm
BOI
-
TYS
10h 20m
2 stops
$447Southwest
Wed, Feb 18 - Fri, Feb 20
Multiple Airlines Logo
5:40 am - 12:48 pm
TYS
-
BOI
9h 08m
1 stop
Multiple Airlines Logo
11:56 am - 7:27 pm
BOI
-
TYS
5h 31m
1 stop
$454Multiple Airlines
Booking Insights

KAYAK's insights & trends for Knoxville to Idaho flights

Get data-powered insights and trends into flights from Knoxville to Idaho to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest month to fly from Knoxville to Idaho?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Knoxville to Idaho, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Knoxville to Idaho is April, when tickets cost $249 (return) on average. On the other hand, the most expensive months are December and November, when the average cost of round-trip tickets is $918 and $558 respectively.

Good to know

Low seasonFebruary
Cheapest flight$184
Best time to beat the crowds with an average 28% drop in price.
Most popular time to fly with an average 7% increase in price.
Flight from Knoxville to Jackson

FAQs - booking Idaho flights

  • How does KAYAK find such low prices on flights from Knoxville to Idaho?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Knoxville to Idaho.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Knoxville to Idaho?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Knoxville to Idaho is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Knoxville to Idaho?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly from Knoxville to Idaho with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Knoxville to Idaho?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying from Knoxville to Idaho up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top 3 airlines serving from Knoxville to Idaho

 
See real verified KAYAK customer reviews for airlines flying from Knoxville to Idaho. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Knoxville to Idaho? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.9
DeltaOverall score based on 8149 reviews
7.8Entertainment
7.2Food
8.1Boarding
8.5Crew
7.9Comfort
Airline reviews

Comfort seating was on the tight side. Maybe it was a smaller plane(?)

10.0 ExcellentG, Feb 2026
FLL - ATL
Read more Delta reviews

Comfort seating was on the tight side. Maybe it was a smaller plane(?)

I didn't take this flight. I changed the flight. Why am I getting surveys and notifications on flights that I change. Seems like a defect with Kayak.

Delta One is extraordinary. I fly business when somebody hires me. I just wonder why there is such a chasm between business class and the insanely inhumane and nonsensical coach. The seats are not large enough to fit even my tiny wife. We fly 10% of what we did because we don’t want to pay 5-10 k but for $400 it’s unbearable. It seems like the accountants took over and made stupid decisions. Screw in 20 extra seats and make it so unbearable that people fly 90% less. Just put the damn price up and put some proper chairs in. But business, yay.

Timing, quality of service, promptness and courtesy of the staff

It was last minute due to weather - considering - it was amazing! Good smiles, friendly staff and they were making sure we knew what was going on when and where.

delta last minute gave me a boarding pass for a different flight with no confirmation that they were changing it

The service from the flight attendants were of supreme quality. They greeted and treated everyone with a wide smile. This is totally absent nowadays. Kudos to them!!!!

Excellent flight and got us around tough weather. Only issue was seat TV did not work and crew tried to reboot.

Very large passenger too space from my own seat. Arm board couldn’t be lowered because of his size. It wads very uncomfortable trip, as the flight was full couldn’t move anywhere having back pain because of the position in which I was the entire flight.

was sitting in the jet bridge for 10 minutes in -20 degree weather waiting for my bag

Bad food, bad service, cold cabin with no additional blankets when asked for (they told me they don’t provide additional blankets). I’m a frequent traveler and this is one of the worst companies I traveled with (by the way I thought that I booked my ticket with Lufthansa but I didn’t see that the flights were handled by United).

United Airlines is my preferred airlines and I am thankful for Gary who also help support me on the phone to switch my flight literally last min.

Not being stranded in Chicago for her airport to 11:30 tomorrow morning the 3rd

the whole trip was smooth, and as comfortable as flying is these days. flight crew was friendly and very courteous and helpful.

The attendant on board was amazing. She should be doing business/first international long haul.

I was fully checked in the prior night and i was unchecked and then didn’t have a seat when I boarded. Instead of an aisle seat, I was out in the middle seat of the very last row of the plane.

In overall it was a good experience, the only down point was that the entertainment screen was working properly.

HORRIBLE, my initial flight was cancelled, they made me pay $200 extra dollars and that got cancelled as well! After 6 cancellations I decided to get a refund because I needed to get home to my babies. Out of $1000+ dollars they offered me only $40 in refund! Totally unacceptable! The flight that they cancelled I was able to fly it on another airline. I had to spend $400 on one way tickets just to get home! I’m still getting the runaround.

First class ticket gets you a choice of chips or nuts. . Just like economy Southwest. Also no screen in the seats. This is first class???!

Seated dude next to me even though lots of empty rows. But main thing was we sat on the tarmac after landing for 30 minutes because of, in the words of the dude who sat next to me, “operational incompetence”. We got changing directions about where to pick up gate checked bags. Pilot and flight attendant were awesome though.

We flew in first class. The crew did not offer drinks before the flight took off, but they treated us well during the flight. The food was excellent. There was actually too much food served, but it was nice to have all the options.

did not have enough meal for first class passengers so offer us snack

Arrived 40 min early which was great - sat in runway for 35 min so no gain. Then waited for luggage 45 min. They need to staff accordingly knowing its one of the busiest week in Phx

My flight got rerouted due to crew rest. I was sent to Dallas customer service was not very polite. Was given a $40 room voucher for Motel 6 and $12 to eat with. It delayed me by a day. Where if I would have just stuck with my original flight Arizona was delayed to Cleveland and I could have made it home. They put me on a 9:00 flight out of Dallas to Cleveland without my knowledge or consent. When originally I was told it would be 8:45 a.m. on February 1st. I told them I could not take the 9:00 flight because I did not have anybody to pick me up from the airport at that time. I'm extremely disappointed in how I was treated. And I will not fly American Airlines again.

I am very appreciative of the help provided to me by Dennis and Whitney. I had lost my phone at EWR airport and they were very kind in assisting me. This included advice on how to file a report and also helping me connect with family. The pilot was also great about keeping passengers updated on the flight progress with regular communications over the system.

Awful. Original flight was delayed 5 hours. Had to to take a connecting flight instead of direct. Had a 4 hour layover. I missed all of my morning meetings getting in 5 hours later than I was supposed to and had to change to take a later flight the next day to get them back in which cia time another $150.

Old equipment, needs upgrade and seat comfort. Internet didn't work 75% or the time.

The screens were inoperable for movies and such, but everything else was just fine

For a 5 1/2 hour flite i considered the "business class" to be subpar. The seats were just ok, no amenities, really nothing more than a long domestic flight. Frankly disappointed.

Delayed an hour due to operational issues. Minimal apologies or care for the significant inconvenience caused. Landed at nearly 1am and they still couldn’t find ground staff to get us off the plane promptly.

Everything you need to know for your flight from Knoxville to Idaho

Information on your arrival and departure airports