BOI - TYS

$307 Find Cheap Flights from Boise to Knoxville

This is the cheapest round-trip flight price found by a KAYAK user in the last 72 hours by searching for a flight from Boise to Knoxville departing on 8/19. 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
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Everything you should know

Cheapest round-trip
$307
Typical prices: $510-$664
American Airlines
Wed 8/19Thu 8/27
BOI - TYS • 1 stop
Top airlines
Cheapest • from $307 (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 05m (one-way)
Insights
Insights
Insights
Insights
When to travel
Cheapest • 44% price drop
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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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

Wed, Aug 19 - Thu, Aug 27
American Airlines Logo
12:12 pm - 11:18 pm
BOI
-
TYS
9h 06m
1 stop
American Airlines Logo
6:03 am - 11:16 am
TYS
-
BOI
7h 13m
1 stop
$307American Airlines
Wed, Aug 19 - Thu, Aug 27
American Airlines Logo
8:01 am - 11:18 pm
BOI
-
TYS
13h 17m
2 stops
American Airlines Logo
5:33 pm - 10:11 pm
TYS
-
BOI
6h 38m
1 stop
$312American Airlines
Wed, Aug 19 - Thu, Aug 27
American Airlines Logo
8:01 am - 11:18 pm
BOI
-
TYS
13h 17m
2 stops
American Airlines Logo
1:56 pm - 10:40 pm
TYS
-
BOI
10h 44m
2 stops
$317American Airlines
Mon, Aug 17 - Tue, Aug 25
Delta Logo
1:59 pm - 11:52 pm
BOI
-
TYS
7h 53m
1 stop
Delta Logo
6:25 pm - 11:59 pm
TYS
-
BOI
7h 34m
1 stop
$337Delta
Mon, Aug 17 - Tue, Aug 25
American Airlines Logo
2:49 pm - 11:18 pm
BOI
-
TYS
6h 29m
1 stop
American Airlines Logo
6:03 am - 1:24 pm
TYS
-
BOI
9h 21m
2 stops
$342American Airlines
Wed, Sep 23 - Sat, Sep 26
United Airlines Logo
12:28 pm - 10:49 pm
BOI
-
TYS
8h 21m
1 stop
United Airlines Logo
6:00 am - 11:28 am
TYS
-
BOI
7h 28m
1 stop
$355United Airlines
Wed, Aug 12 - Sat, Aug 15
United Airlines Logo
12:24 pm - 8:53 pm
BOI
-
TYS
6h 29m
1 stop
United Airlines Logo
7:00 am - 3:31 pm
TYS
-
BOI
10h 31m
2 stops
$360United Airlines
Mon, Aug 17 - Tue, Aug 25
American Airlines Logo
12:12 pm - 11:18 pm
BOI
-
TYS
9h 06m
1 stop
American Airlines Logo
6:03 am - 11:16 am
TYS
-
BOI
7h 13m
1 stop
$368American Airlines
Mon, Aug 17 - Tue, Aug 25
American Airlines Logo
2:49 pm - 11:18 pm
BOI
-
TYS
6h 29m
1 stop
American Airlines Logo
6:03 am - 1:24 pm
TYS
-
BOI
9h 21m
2 stops
$373American Airlines
Wed, Sep 23 - Sat, Sep 26
Southwest Logo
6:00 am - 6:55 pm
BOI
-
TYS
10h 55m
2 stops
Southwest Logo
6:50 am - 3:30 pm
TYS
-
BOI
10h 40m
2 stops
$379Southwest
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.

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 $313 (return) on average. On the other hand, the most expensive months are December and July, where the average cost of round-trip tickets is $625 and $606 respectively.

Good to know

Low seasonJanuary
Cheapest flight$307
Best time to beat the crowds but there is an average 4% increase in price.
Most popular time to fly with an average 7% 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 5 days, the lowest price for a flight from Boise to Knoxville was $307 for a round-trip ticket.

  • 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, Alaska Airlines or Delta?

    The two airlines most popular with KAYAK users for flights from Boise to Knoxville are Alaska Airlines and Delta. With an average price for the route of $647 and an overall rating of 7.9, Alaska Airlines is the most popular choice. Delta is also a great choice for the route, with an average price of $502 and an overall rating of 7.8.

  • 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 12583 reviews
8.1Boarding
8.5Crew
7.8Comfort
7.0Entertainment
7.0Food
Airline reviews

Eva Airlines attendants were wonderful. I really enjoyed the hot meals. They always greeted me with a warm smile. I'm looking forward to flying back to the USA with them again!

10.0 ExcellentPamela, Jun 2026
BOI - SEA
Read more Alaska Airlines reviews

Eva Airlines attendants were wonderful. I really enjoyed the hot meals. They always greeted me with a warm smile. I'm looking forward to flying back to the USA with them again!

Flight was cancelled which destroyed the rest of our journey.

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

The overhead storage was already packed full when I boarded (I fly peasant class), but the attendant played some Tetris and made a spot for my small suitcase. Thanks!

Snacks for our toddler could have been better, front the standpoint of variety but that’s not any different from other airlines.

I fell asleep and missed my flight and they rescheduled me no problem. Staff was professional and the plane was clean. I was very happy with my experience.

I enjoyed the Starlink access but didn't have much time to use it. It also kept dropping me so I gave up. The food was very good though when I asked for a different "dessert" they didn't have anything. Chocolate Brownie Cookies are not suitable for everyone...maybe children. The flight staff were amazing - at least in First Class! My first time ever! The trip from Boise to San Diego was FAR better than going to Boise.

From Las Vegas to Boise all went well. However, our flight was delayed in Boise and I missed my connecting flight from Seattle to Pasco. Moreover, the last flight to Pasco was full and I was booked on the 11:30 flight Sunday and given a hotel accommodation. However, I was scheduled to deliver the Sunday morning service at my church and needed to arrive no later than 10:00. Therefore, I booked a Delta flight scheduled to arrive in Pasco at 23:09. My piece of luggage checked in Las Vegas arrived in Pasco earlier today. I waited at the airport for over an hour last night to speak with an Alaska agent to no avail. I went back after church this morning in search of my piece of luggage and it could not be located. After waiting for 40 minutes to speak to the agent authorized to take my claim, he announced that he was closing the counter to assist on the flight line but not before providing me with a telephone number that would help me with filing my claim. Before I was able to make the call (due to other factors) I received a call from Alaska agent informing me that my luggage had just arrived and I am now waiting for it to be delivered. I deliberately took the more complicated route home to ensure that I would be home in plenty of time to prepare for myself for the Sunday service and accommodate my relatives’ needs. I believe the airport is undermanned given the number of flights coming in and going out. It was fiasco last night with three flights waiting for luggage and another flight landing within minutes. Today’s problems stemmed from a lack of cross training and a serious amount of cargo/baggage going out and too few people scheduled to cover.

It was ok. First time flying with them to Boise Won’t do again

Our late returning flight was annoying. The plane was small, but it made boarding and disembarking quicker. I do wish they offered a gluten free snack.

The flights are constantly late anymore, and they won't even give you a glass of water on the plane. For years, they were able to do a service on this flight from Atlanta to Knoxville and Knoxville Atlanta now they say it's too short of a flight. You can't even get a quick drink of water.

Should never have had to go to Detroit from Orlando back to Tennessee!

My flight was canceled on Sunday. Rebooking took three hours. Had to pay for accommodations another night. New flight was delayed for 5 hours, all that was sent was a 12 dollar food voucher, which doesn’t tell you how to use it. Then when we landed we had to sit on the plane for an hour before we could get off.

Same experience as the flight from Norfolk to Atlanta where people are boarded in zones that don't make sense. People behind you on the plane will get on before you and they take the luggage space on your row.

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

The plant way delayed departing by 3 hours. It was an old airplane with broken seats and armrests. The bathroom made a hollering sound. A really crappy flight experience and travel day all around.

Kind staff. Snacks are small but that’s the new normal.

I specifically picked out right side aisle seats because my left knee sometimes needs to be stretched. But my experience this trip was that the seats were shuffled and I lost those assigned seats, resulting in me having to sit in a much less desirable position for my comfort.

Very frustrated with boarding gate crew. She announced the plane was small and they would be limiting us to one item to carry on. Not a problem for me as I understand the tiny planes have limited space!! Not the case here! It was a rather large plane and had plenty of room for bags! So because I don’t want to be one of “those people” who ignores the request to check a carry on I did so asking if I would be able to pick it up at the bottom of the ramp on arrival in Knoxville to which she responded “yes”! Then I watched as every other passenger held onto their 2 items and boarded!! Then when we arrived in Knoxville our 2 carry ons had been put with all the other luggage and we had to go to baggage pick up and wait for all the big checked bags to come off the carousel! So she lied!! Frustrating. Next time I won’t be so nice!

Flight was great. DELTA did a fantastic job! ATL was busy, as usual!

They delayed the flight 3 hours because it wasn't full they moved us to 5 different gates probably the worst airline ever not even spirit is this bad.

Delayed - weather wasn't bad at either end. Also sat on tarmac in ORD.

Poor communication, flight was delayed for preventable reasons. I missed my connection.

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.

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

The flight was delayed so we were dead tired, and after that the turbulence was horrible. I was very scared.

Was happy we finally got upgraded in 1st class. The seat getting old. The cushiness need some improvement.

Once we got in the air the pilot made up some of the time of the delay. So that was really nice.

United Airlines was fantastic, however, UnderPricer was a nightmare. I got to the airport 4 hours before my flight. We are moving to New Zealand so had quite a bit of baggage (16 checked items) and so wanted to have plenty of time to get everything taken care of properly. When I went to check in they (United) could only find a ticket for me. The 5 tickets for my children were never officially ticketed. I called Underpricer and they told me it was United's fault and United told me that Underpricer just needs to reissue the tickets, but they refused to. I asked the Underpricer agent to transfer me to his supervisor as I was not getting the help I needed. He told me the supervisor was busy but that he would call me back in 30 minutes. 30 minutes came and went with no phone call. After an hour I called Underpricer back but they would not let me talk to the person I had talked to before, just told me that he was talking with the supervisor and technical support. I called again an hour later, was told the same thing. I tried again later, with only about 30 minutes until my flight was scheduled to leave (meaning I had been at the airport for more than 3 hours with my 5 children trying to get ticketed and board the flight). Also, my husband had moved to New Zealand 3 months prior, I haven't seen him in 3 months, my children hadn't seen their dad in 3 months, we were all extremely eager to get on that flight and get to New Zealand. The situation with the tickets did not get resolved until after it was too late to check our luggage and board our flight. We were devastated. My 11 year old son was in tears at not being able to be on his way to see his dad. Thankfully we were rebooked for the next evening, but that night it felt devastating. We'd been at the airport for 4 hours waiting. My in-laws waited with me and then helped me reload all our baggage and took us home to stay with them for the night. On the newly booked flights we could not sit together - my children were spread throughout the plane. So, even though I had paid extra to select our seats after buying my seats from Underpricer only two of us were able to sit together (thankful that my 11 year old wasn't all by himself, but not happy that my 14 & 16 year old daughters were seated by strangers). I really feel that Underpricer should refund me what I paid for the seating ($120 USD). It was a very frustrating situation and I plan on never using Kayak or Underpricer ever again.

For some strange reason I was put in zone 5 for boarding even though I had paid premium price for a premium seat right behind business class. This must have been a flaw because everyone else around me in the same zone (row) had been placed in zone 3.

Delayed by 5 hours and I had to wit in the airport for more than 6+ hours.

technology worked well and everything ran smoothly. The seats are quite cramped so please don't try to re-engineer the cabin to squeeze more bodies on board.

Flying in the United States with the major airlines has become so underwhelming. A 2-3hr flight in most other parts of the world with the major carriers of the area comes with newer, CLEANER aircraft and significantly better in flight service in terms of both staff attitude and a actual meal service.

Delays experienced in boarding/take off due to incoming plane delayed. However, the boarding time/depart time in the app was significantly delayed in providing these updates. Usually not updated until an hour after we should have already boarded. Poorly managed.

Arrived early picked up my bag in a few minutes- great trip - thank you

Flight was smooth, quick and felt safe. The 2 delays not happening would have been better but I guess that happens in the airline industry

The pilot greased the landing and the crew was fantastic.

Plane was delayed for 6 hours, at first by weather, which is understandable, but was further delayed with NO given reason for 2 1/2 hours more. We had no clue when we were going to depart actually until they opened the ramp. VERY POOR to ZERO COMMUNICATION!!!

At least it was a short flight. Greyhound with wings.

Our flight got changed and/or delayed 8 times before we boarded.

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

Information on your arrival and departure airports