BOI - TYS

$163 Find Cheap Flights from Boise to Knoxville

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Boise to Knoxville departing on 5/28. 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 Knoxville

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Boise to Knoxville, 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 Boise to Knoxville, as well as popular online travel agencies
Travelers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

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Everything you should know

Cheapest round-trip
$320
Typical prices: $763-$454
Frontier
Tue 6/9Mon 6/22
BOI - TYS • 1 stop
Cheapest one-way
$163
Typical prices: $202-$283
Frontier
Thu 5/28
BOI - TYS • 1 stop
Top airlines
Cheapest • from $320 (round-trip)
Best reviews • 7.9 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
Not available
There are currently no direct flights between Boise and Knoxville. You'll need at least 1 connection.
Insights
Insights
Insights
Insights
Top layover airports
Cheapest • Avg $518 (round-trip)
Shortest trip • 6h 11m (one-way)
Insights
Insights
Insights
Insights
When to travel
Cheapest • 35% price drop
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Knoxville!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Boise to Knoxville (BOI-TYS)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Boise to Knoxville 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 Boise to Knoxville

Tue, Jun 9 - Mon, Jun 22
Frontier Logo
1:04 pm - 7:37 pm
BOI
-
TYS
28h 33m
1 stop
Frontier Logo
8:32 pm - 12:09 pm
TYS
-
BOI
17h 37m
1 stop
$320Frontier
Tue, May 26 - Mon, Jun 1
Multiple Airlines Logo
1:25 pm - 7:33 pm
BOI
-
TYS
28h 08m
1 stop
Multiple Airlines Logo
5:30 pm - 12:30 pm
TYS
-
BOI
21h 00m
2 stops
$328Multiple Airlines
Tue, May 26 - Fri, May 29
Delta Logo
1:53 pm - 11:56 pm
BOI
-
TYS
8h 03m
1 stop
Delta Logo
3:30 pm - 10:28 pm
TYS
-
BOI
8h 58m
1 stop
$346Delta
Thu, May 28 - Mon, Jun 1
Multiple Airlines Logo
1:25 pm - 7:33 pm
BOI
-
TYS
28h 08m
1 stop
Multiple Airlines Logo
5:30 pm - 12:30 pm
TYS
-
BOI
21h 00m
2 stops
$347Multiple Airlines
Tue, May 26 - Fri, May 29
Delta Logo
1:53 pm - 11:56 pm
BOI
-
TYS
8h 03m
1 stop
Delta Logo
10:25 am - 5:50 pm
TYS
-
BOI
9h 25m
2 stops
$351Delta
Tue, Aug 18 - Sun, Aug 23
Multiple Airlines Logo
1:04 pm - 7:37 pm
BOI
-
TYS
28h 33m
1 stop
Multiple Airlines Logo
7:00 am - 12:09 pm
TYS
-
BOI
7h 09m
1 stop
$354Multiple Airlines
Sat, Apr 25 - Sat, May 9
United Airlines Logo
2:37 pm - 10:29 pm
BOI
-
TYS
5h 52m
1 stop
United Airlines Logo
7:00 am - 11:49 am
TYS
-
BOI
6h 49m
1 stop
$355United Airlines
Sun, Aug 2 - Sun, Aug 9
Multiple Airlines Logo
1:04 pm - 7:37 pm
BOI
-
TYS
28h 33m
1 stop
Multiple Airlines Logo
7:00 am - 12:09 pm
TYS
-
BOI
7h 09m
1 stop
$359Multiple Airlines
Sat, Apr 25 - Sat, May 9
United Airlines Logo
9:26 am - 10:34 pm
BOI
-
TYS
11h 08m
2 stops
United Airlines Logo
7:00 am - 11:49 am
TYS
-
BOI
6h 49m
1 stop
$360United Airlines
Sun, May 24 - Mon, Jun 1
Multiple Airlines Logo
1:25 pm - 7:33 pm
BOI
-
TYS
28h 08m
1 stop
Multiple Airlines Logo
5:30 pm - 12:30 pm
TYS
-
BOI
21h 00m
2 stops
$361Multiple Airlines
Booking Insights

KAYAK's insights & trends for Boise to Knoxville flights

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

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

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Boise to Knoxville departing in June.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Boise to Knoxville, 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 Boise to Knoxville is September, where tickets cost $338 (return) on average. On the other hand, the most expensive months are December and January, where the average cost of round-trip tickets is $612 and $585 respectively.

Good to know

Low seasonJanuary
Cheapest flight$163
Best time to beat the crowds but there is an average 12% increase in price.
Most popular time to fly with an average 1% increase in price.
Flight from Boise to Knoxville

When to book flights from Boise to Knoxville

Are your dates flexible? Find out the best times to travel from Boise to Knoxville based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Boise to Knoxville

  • What is the cheapest flight from Boise to Knoxville?

    In the last 3 days, the lowest price for a flight from Boise to Knoxville was $163 for a one-way ticket and $320 for a round-trip.

  • Do I need a passport to fly between Boise and Knoxville?

    No

  • Which airports will I be using when flying from Boise to Knoxville?

    On your way to Knoxville, you’ll fly out from Boise Air Term. Gowen Fld. You’ll be landing at Knoxville McGhee Tyson.

  • Which aircraft models fly most regularly from Boise to Knoxville?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Boise to Knoxville?

    SkyTeam, Star Alliance, and oneworld are the airline alliances operating flights between Boise and Knoxville, with SkyTeam being the most commonly used for this route.

  • Which is the best airline for flights from Boise to Knoxville, Delta or Alaska Airlines?

    The two airlines most popular with KAYAK users for flights from Boise to Knoxville are Delta and Alaska Airlines. With an average price for the route of $502 and an overall rating of 7.9, Delta is the most popular choice. Alaska Airlines is also a great choice for the route, with an average price of $647 and an overall rating of 7.9.

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

    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 Boise to Knoxville.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Knoxville from Boise 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 Boise to Knoxville?

    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 to Knoxville with an airline and back to Boise with another airline. Booking your flights between Boise and TYS can sometimes prove cheaper using this method.

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

    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 to Knoxville from Boise up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top 4 airlines serving from Boise to Knoxville

 
See real verified KAYAK customer reviews for airlines flying from Boise to Knoxville. 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 Boise to Knoxville? 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
Alaska AirlinesOverall score based on 12121 reviews
7.0Food
8.1Boarding
7.8Comfort
8.5Crew
7.0Entertainment
Airline reviews

WOuld have liked coffee or pretzels but other than that, crew and pilot and flight were great. Seat was great, too.

10.0 ExcellentElizabeth, Mar 2026
BOI - BZN
Read more Alaska Airlines reviews

WOuld have liked coffee or pretzels but other than that, crew and pilot and flight were great. Seat was great, too.

No outlets, plugs, way to charge the phone or service and no food on one leg o the trip, but other than that, great. Loved WIFI, the flight, the crew, the pilots, the schedule, etc. Great job. My new favorite airline!

On time, friendly and professional staff and crew Very nice new terminal in Spokane

It was a bumpy flight but the crew was very attentive and made it a safe and enjoyable experience.

My suggestion is that they should provide USB-C charging ports for modern cell phones.

Very easy, stress free airline. Was a wonderful experience. Will use again

Alaska drastically changed our flight from a direct flight to a flight with connection and a long layover. So we canceled the Alaska flight and we learned a valuable lesson that we will never book through kayak again because the third party travel agent tried to withhold our money.

Overall, we had a very good experience with Alaska Airlines on our flight from Honolulu to Seattle. The First Class cabin was comfortable, boarding was smooth, and the crew was friendly and attentive. The meal service was solid and the overall flight felt well organized. One thing that stood out negatively was the drink service. I was in First Class and, while quietly watching movies and not causing any issues, I was cut off after four drinks. I understand safety policies, but the cutoff felt a bit premature given the context.

Everything was excellent. It always is with Alaska Airlines. Thank you. 😊

It was ok! Not fond of sitting in middle seat. Tried to upgrade with my Atmos card but it was a new account and they weren’t able to look up my account details.

This was the worse experience. They delayed our flight twice and we still had to find another flight to get home sooner which was alos delayed. Also, the flight attendant named Ginny on DL9890 leaving at 4:13pm on 3/23/26 was extremely rude.

I love Delta the flight attendants were personable and the flight arrived 1/2 earlier thanks expected. All a plus. The gate agent was a bit flustered but even with that I still had a good experience. Her supervisor assisted me.

Got to fly my favorite plane, the Boeing 767-400ER, to Milan. The soft blush pink mood lighting during meal service was very beautiful and gorgeous. The service was top-notch, and our flights were on time. I highly recommend Delta.

I am still at the Airport! Delayed Delayed and Delyaed

I took seat 15A in anticipation of window seat, there is no window.

The first class flight attendant was awful to everyone. Very rude; no customer service. She should not be working in first class.

Snacks and included beverages were appreciated. Boarding went smoothly. Plenty of overhead bin space. Seats get very uncomfortable after a couple of hours. After waiting 10 painful minutes for my walker, a very nice Delta guest agent pushed me in a wheelchair to the gate. It was finally delivered to me after another 15 minutes . Our checked bag was on the carousel long b4 I was able to retrieve it. Fortunately it was still there but somewhere along the way the straps we used to secure it were removed and and were not reattached. Wish I had made note of the agents name.

It was fine. 55 minute flight. No snacks or beverage service offered. Boarding went smoothly and my walker was waiting for me on the jet way.

Smaller plane for a longer flight than my first one. Doesn’t make sense.

The cabin temperature was nice and cool. The wifi was not working.

They promise free wi-fi prior to boarding and then once on board you are informed you have to purchase wifi even after being a mileagePlus member.

I've been flying American mostly, and it's been very frustrating. This united flight makes me realize maybe the issue isn't flying, but the airline. United was a significantly better experience. The plane was more comfortable, with a normal amount of leg room (vs the ridiculous reductions AA has made), more comfortable seats, screens to watch movies. It was a much better experience!

Awful. No counter attendants. No dinner offered due to delays.

Horrible service no Wi-Fi connection on both leg of the flight and they are refusing to fix bad service

3 hour delay…. Nearly 2 hours sitting on tarmac. Do better, United. Or at least have the sense to not say “we hope you enjoyed your flight with us” upon disembarking.

Flights were on time. Free Wifi on plane. Everything was well organized.

During landing. 2 crew members passed 3 times by my lane and didn't notice that people in front of us had their site to the furthermore reclined... That was uncomfortable and could have been dangerous.

They delayed the flight from 9:00 to 11:55 At 11:45 they canceled the flight. I paid a premium price for the tickets with poor service

We had excellent customer service despite the chaos at George Bush airport in Houston!

It isvvery small flight. No leg room . No space to put my personal item at feet.

The flight changed gates multiple times and flight had to be delayed multiple times

We called Kayak for a change due to the TSA situation in Atlanta. What we got was a canceled return flight (in error) and we had to find the mistake. Not happy with Kayak who blamed it on AA.

I was in last row so that is never great bc the person in front of me leaned his seat all the way back into me.

Delayed for mechanical and no updates on what was happening and how long the delay might be.

My flight from LGA was cancelled and my rebooked flight from JFK was delayed numerous times. I will now be getting home after 2am.

Flight was delayed half hour before boarding, but when I checked flight aware the plane that would Pick us up had a delay of more than an hour. AA should let us know in advance to avoid waiting several hours in the airport

On the return flight, arriving in Denver we sat on the tarmac in Denver for over 20 minutes.

Typical AA - late by 90+ mn. Gate changed twice... Changed the departure time 6 times No explanation, no communication on reasons for delay I travel with AA twice a year... and it is consistently very poor.. I will continue to use AA only when i have to.

The flight attendant in business class was excellent! Professional, friendly and attentive.

Delays with no explanation. It could have been handled better.

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

Information on your arrival and departure airports