BOI - TYS

$145 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 5/24. 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
$428
Typical prices: $763-$454
Delta
Mon 6/1Fri 6/5
BOI - TYS • 1 stop
Cheapest one-way
$145
Typical prices: $216-$338
Frontier
Sun 5/24
BOI - TYS • 1 stop
Top airlines
Cheapest • from $428 (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 33m (one-way)
Insights
Insights
Insights
Insights
When to travel
Cheapest • 40% 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

Mon, Jun 1 - Fri, Jun 5
Delta Logo
11:39 pm - 9:34 am
BOI
-
TYS
7h 55m
1 stop
Delta Logo
5:59 pm - 10:28 pm
TYS
-
BOI
6h 29m
1 stop
$428Delta
Thu, Oct 15 - Wed, Oct 21
Southwest Logo
5:55 am - 6:40 pm
BOI
-
TYS
10h 45m
2 stops
Southwest Logo
4:05 pm - 10:10 pm
TYS
-
BOI
8h 05m
1 stop
$431Southwest
Thu, Oct 15 - Wed, Oct 21
Southwest Logo
5:55 am - 6:40 pm
BOI
-
TYS
10h 45m
2 stops
Southwest Logo
4:05 pm - 11:55 pm
TYS
-
BOI
9h 50m
2 stops
$436Southwest
Sat, Jun 27 - Sat, Jul 4
Delta Logo
11:59 am - 9:41 pm
BOI
-
TYS
7h 42m
2 stops
Delta Logo
6:45 am - 1:51 pm
TYS
-
BOI
9h 06m
1 stop
$439Delta
Fri, Jun 26 - Sat, Jul 4
Delta Logo
2:04 pm - 11:54 pm
BOI
-
TYS
7h 50m
1 stop
Delta Logo
6:00 am - 12:54 pm
TYS
-
BOI
8h 54m
1 stop
$443Delta
Sat, Jun 27 - Sat, Jul 4
Delta Logo
11:59 am - 9:41 pm
BOI
-
TYS
7h 42m
2 stops
Delta Logo
6:00 am - 12:15 pm
TYS
-
BOI
8h 15m
2 stops
$444Delta
Fri, Jun 26 - Sat, Jul 4
Delta Logo
5:30 am - 5:15 pm
BOI
-
TYS
9h 45m
2 stops
Delta Logo
7:35 am - 12:54 pm
TYS
-
BOI
7h 19m
1 stop
$448Delta
Fri, Jun 26 - Sat, Jul 4
Southwest Logo
8:45 am - 9:10 pm
BOI
-
TYS
10h 25m
2 stops
Southwest Logo
7:00 am - 2:45 pm
TYS
-
BOI
9h 45m
2 stops
$453Southwest
Mon, Jun 1 - Fri, Jun 5
Delta Logo
11:39 pm - 9:34 am
BOI
-
TYS
7h 55m
1 stop
Delta Logo
5:40 am - 1:18 pm
TYS
-
BOI
9h 38m
2 stops
$463Delta
Thu, Oct 15 - Wed, Oct 21
Southwest Logo
7:50 am - 6:40 pm
BOI
-
TYS
8h 50m
1 stop
Southwest Logo
4:05 pm - 10:10 pm
TYS
-
BOI
8h 05m
1 stop
$471Southwest
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 $326 (return) on average. On the other hand, the most expensive months are March and December, where the average cost of round-trip tickets is $634 and $612 respectively.

Good to know

Low seasonJanuary
Cheapest flight$145
Best time to beat the crowds but there is an average 7% increase in price.
Most popular time to fly and prices are also 7% lower on average.
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 $145 for a one-way ticket and $428 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 $513 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 12336 reviews
8.5Crew
7.8Comfort
7.0Entertainment
8.1Boarding
7.1Food
Airline reviews

The crew seem untrained and uncertain no one ever checked up on us in our first class cabin. I had to ask for water four times and the lady kept saying she was busy when they weren't really doing anything. Had to walk to the back of the plane to get water for myself. Crew seem new and unexperience. You can tell this by the fumbling they kept making trying to fight. (I miss Hawaiian air.)

6.0 GoodAnonymous, May 2026
SEA - HNL
Read more Alaska Airlines reviews

The crew seem untrained and uncertain no one ever checked up on us in our first class cabin. I had to ask for water four times and the lady kept saying she was busy when they weren't really doing anything. Had to walk to the back of the plane to get water for myself. Crew seem new and unexperience. You can tell this by the fumbling they kept making trying to fight. (I miss Hawaiian air.)

Alaska airlines agent helped me greatly to reschedule my flight. The flight was also very comfortable and the flight attendants were very friendly.

We tried for days to use online Alaska Airline app we needed to know what Gate to depart from . When we got there we were given a paper boarding ticket with the wrong gate on it . We almost missed this flight . It caused great stress and caused a health side effect. The previous flights April 24 started hour late mechanical issues . We were not allowed to depart plane in time to get correct gate and missed our flight .

Check in went smooth, flight was on time and our checked bag was delivered in a timely fashion.

Some food or at least snacks need to be offered on long flights. I thought I had ordered food for my husband and I prior to the flight, but was told during the flight that I had not. Perhaps, if you must charge extra for food, let people order on board. We did get some food, which evidently others had decided they didn’t want onboard, but it wasn’t very good. We did like the adherence to takeoff and landing times, and the quick return of our luggage.

Couldn’t order food for the family because all the good food was unavailable. We opted for bringing something on with us. I also didn’t like that I had to have T-mobile for online movies. Stupid.

Our meal order was screwed up. We had to choose from basic boxes. I was not happy.

I had to cancel my trip due to medical reasons. I have been unable to cancel online through either Kayak or Alaska Airlines.. I am trying to get my insured trip reimbursed by XCover. They are requiring a notice of cancellation or not using to get my refund. Please help me get that information. I have been unable to get this information from either Kayak or Alaska Airlines.

Alaska is by far the best airline to fly with 😍

Flight was cancelled which destroyed the rest of our journey.

Much better than Latam, the worse airline company ever. I hope I don't have the need to fly Latam ever in my life again.

Seats in Delta Main are unbelievably close to the seat in front of. Hard to get a backpack under the seat.

The agent at check in and at the gate were less than thrilled to be at work. I'm not a fan of Kayak's placement on the plane. I got put in the middle seat and none of my preferences were used.

In ATL they have two sets of departure screens. Follow what is on your airline's departure board - the ATL Airport Authority departure board had completely incorrect details about the gate assignment for my flight, which would have made me miss boarding.

Flight was delayed it was hot while sitting on the plane, one engine was working on the plane until they had to do some jimmy rigging down the runway in order for the other engine to charge up. It was ridiculous

The flight was very good and the staff was very friendly and helpful!

The only thing I would say is we tried to get on a standby earlier flight, but with our fair we couldn’t. That seems senseless to leave with open seats..

Very easy to use and convenient, you can perform any action within the same portal

In a world of delays, Delta was on time both ways! Boarding was fast and efficient. Staff was friendly. AND wifi worked.

WiFi didn’t work. Flight delayed 3 hours Crew members were illiterate Seat lean back did not work.

It was good overall except from Omaha to Denver when flight a was a repeatedly delayed apparently due to some issue at Denver. Communications could have been handled better. I had to board then deboard with luggage and board again

Left an hour and a half after the listed time. Up side was it had TV screens on the seat.

No screens or meal options. Freezing cold. Dirty seats. Left late.

O’hsre taxi and deboarding took 40 minutes. Needed 20 minutes extra time between connecting flights to avoid running through terminal.

Overall a good experience, but no wifi available for free or for purchase and we got wet from condensation or other water source during descent.

Booked through Kayak Business, had a seat in middle and towards back due to booking rate, not comfortable.

Was great in general, try to respect time and excuses when slight changes have been made, appreciated!

A long delay. Don't travel late in the day.

Super friendly with lots of drink options an entertainment. Friendly crew.

Standard flight with a drinks and a snack- overall very quick flight. The flight attendants were very strict, bordered on rude.

not sure why you ask about food, I n3ver get food on flights except maybe cookies or pretzels. wifi was slow and in and out most of the flight not good.

Cancelled BOYH legs of our flight home 30 min before initial boarding

Cancelled the flight half hour before boarding. Then cancelled the connecting flight too.

Left early arrived early..right amount of talking from pilots..of course had to love the biscuit and water!

I would like a refund for the extra cost the seat I paid for. An oversized person sat next to me and I couldn’t fit on my seat and had to move to another seat.

Boarding gate at LAX was too crowded—two gates next to one another

The flight was delayed about an hour for a maintenance specialist to approve the maintenance repair

This flight was delayed but it worked in my favor because my Atlanta to Dallas flight was delayed.

This was a hard flight. 3 delays out of OKC (1 on the Tarmac). Delay in Atlanta coming to Dallas. total travel time was the equivalent of driving from OKC to Atlanta.

Like: flights are on time, good boarding process Can improve: planes are old, improve entertainment and make space more comfortable

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

Information on your arrival and departure airports