$211 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 4/13. 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
Boise1 stop$394
Idaho Falls
Idaho Falls1 stop$413
Spokane
Spokane1 stop$385
Boise
Boise1 stop$394
Idaho Falls
Idaho Falls1 stop$413
Spokane
Spokane1 stop$385

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

Sat, Feb 28 - Wed, Mar 4
American Airlines Logo
5:40 am - 12:38 pm
TYS
-
JAC
8h 58m
1 stop
American Airlines Logo
3:06 pm - 12:28 am
JAC
-
TYS
7h 22m
1 stop
$359American Airlines
Sat, Feb 28 - Wed, Mar 4
American Airlines Logo
7:02 am - 2:26 pm
TYS
-
JAC
9h 24m
2 stops
American Airlines Logo
3:06 pm - 12:28 am
JAC
-
TYS
7h 22m
1 stop
$364American Airlines
Mon, Mar 23 - Fri, Mar 27
American Airlines Logo
5:40 am - 12:38 pm
TYS
-
JAC
8h 58m
1 stop
American Airlines Logo
1:18 pm - 9:24 pm
JAC
-
TYS
6h 06m
1 stop
$378American Airlines
Thu, Apr 16 - Mon, Apr 20
United Airlines Logo
4:30 pm - 9:11 pm
TYS
-
GEG
7h 41m
1 stop
United Airlines Logo
5:05 am - 3:06 pm
GEG
-
TYS
7h 01m
1 stop
$385United Airlines
Tue, May 26 - Sat, May 30
United Airlines Logo
8:20 am - 5:54 pm
TYS
-
JAC
11h 34m
2 stops
United Airlines Logo
7:30 am - 4:51 pm
JAC
-
TYS
7h 21m
1 stop
$391United Airlines
Thu, Apr 16 - Mon, Apr 20
Delta Logo
5:26 pm - 12:20 am
TYS
-
GEG
9h 54m
2 stops
Delta Logo
7:38 pm - 10:21 am
GEG
-
TYS
11h 43m
2 stops
$395Delta
Thu, Apr 16 - Sun, Apr 19
Multiple Airlines Logo
8:00 am - 8:29 pm
TYS
-
GEG
15h 29m
2 stops
Multiple Airlines Logo
9:19 pm - 10:51 pm
GEG
-
TYS
22h 32m
1 stop
$399Multiple Airlines
Thu, Apr 23 - Mon, Apr 27
Southwest Logo
2:45 pm - 12:30 am
TYS
-
GEG
12h 45m
2 stops
Southwest Logo
5:35 pm - 12:00 pm
GEG
-
TYS
15h 25m
2 stops
$401Southwest
Sat, Apr 25 - Mon, May 4
Southwest Logo
6:40 am - 4:05 pm
TYS
-
GEG
12h 25m
2 stops
Southwest Logo
5:35 pm - 12:00 pm
GEG
-
TYS
15h 25m
2 stops
$407Southwest
Fri, May 1 - Tue, May 5
Delta Logo
5:24 pm - 11:34 pm
TYS
-
GEG
9h 10m
2 stops
Delta Logo
2:08 pm - 10:59 pm
GEG
-
TYS
5h 51m
1 stop
$416Delta
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$211
Best time to beat the crowds with an average 11% drop in price.
Most popular time to fly with an average 7% increase in price.
Flight from Knoxville to Idaho Falls

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 8205 reviews
8.1Boarding
7.8Entertainment
7.2Food
8.5Crew
7.9Comfort
Airline reviews

Good experience and the flight landed early. There was no food I had or entertainment.

8.0 ExcellentDavid, Feb 2026
BOS - LGA
Read more Delta reviews

Good experience and the flight landed early. There was no food I had or entertainment.

Flight was delayed and no reasons provided. After the passengers were boarded, the crew made announcement that the captain has jot arrived and he would take another 15 mins. All passengers patiently sat until the captain came and started. Terrible experience!

Flight was delayed. No information on why it was delayed. After we boarded the flight, , the crew made announcement that the captain hs not arrived and he will take 15 mins more to arrive. Passengers were just sitting patiently for the captain to arrive and start, Terrible experience.

Totally worth the miles to upgrade to Delta Comfort. Plenty of legroom.

This was my first time flying Delta ever and I had a great experience!

Smallest leg room I've ever had on a plane.

They took all carry-on luggage from Groups 6 -9 - I was group 5 and waiting in line to board - they made me check my luggage too. That then went to baggage claim and delayed departure from the airport. There was overhead room in my seating area - Delta over reacted. Also, had a gentleman next to me that took up 1/2 my seat.

Flight delay was frustrating, also you cannot checkin online without delta app, web browser check-in throw errors

The gate agent was most helpful in getting me on to fly standby. I greatly appreciate it.

bulkhead seat had very little legroom - even in bsiness class.

Very old flight - time to retire it for newer airplanes

2+ hours delayed Outlet in row 12 did not work Tv monitors did not work Lights kept off the entire flight for at 5pm-7pm flight

Very disappointing given gate agent behavior. Filed a formal complaint with United.

Do not like the size of the overhead bin. I think staff should monitor the size of suitcases that are being carried on by passengers to ensure they meet the size requirement.

Crew was great (professional, attentive, prompt). Snacks for 4 hrs flight is deplorable.

Flight delayed. WiFi connectivity very poor if not existant. Last minute arrival forced me to run to catch my connection.

Both of my flights arrived early and check in process was smooth

Terrible. No customer service, no food, no drinks on a 6 hour premier economy booking.

Short flight, but no drink/snack service. The flights both going and coming were delayed.

Much better than Spirit. I was please by the easy fast check in and boarding

Boarding delayed 20 minutes for no reason, no wifi, in flight entertainment, or snacks / waters?

Didn't get a seat assignment until the last minute even though i picked a seat.

American has been able to implement an algorithm that makes it possible for nearly every one of my evening flights to be late. Congratulations!

I was on a small regional flight from Detroit to Philadelphia. When we landed the outside cruise needed to turn something off with the engine, which took quite a long time. Then, when they allowed us to get off the plane it was outside. They took their time, unloading all the luggage and waited till they unloaded all the luggage before they brought it over to us. It was 9 o’clock at night freezing cold out, and there was no proactive hustle to try to get people their luggage. It was really one of the worst experiences I think I’ve ever had with American until a manager came over. I don’t think they were going to even consider pulling the luggage over to the people that had been waiting outside for at least 10 minutes in the freezing cold.

The flight was fine, once we got underway. It was more than hour delayed

Beverage service was not good. Also just one service in 5 hr 30 min flight. No ask fir water ir anything beside one time beverage service.

Waited for oxygen tanks for 30 minutes after boarding was complete.

The seats are too uncomfortable for anyone over 5ft 8in. I'm 5'10" with a back and hip issue and I was in pai for the full duration of the flight.

The flight was on time/early, attentive crew, and everything overall went smoothly. Disappointed that WIFI was not working for the flight.

One day, I do so hope for a gluten free snack! Seems like with the rest of the world FINALLY figuring out what gluten free is, American Airlines would too. Fingers crossed!!

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

Information on your arrival and departure airports