BOI - TYS

$188 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 8/5. 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
$375
Typical prices: $629-$436
Delta
Tue 10/13Tue 10/20
BOI - TYS • 1 stop
Cheapest one-way
$188
Delta
Wed 8/5
BOI - TYS • 1 stop
Top airlines
Cheapest • from $375 (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 • 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

Tue, Oct 13 - Tue, Oct 20
Delta Logo
11:30 pm - 9:12 am
BOI
-
TYS
7h 42m
1 stop
Delta Logo
5:30 am - 12:39 pm
TYS
-
BOI
9h 09m
1 stop
$375Delta
Sat, Oct 17 - Sat, Oct 24
Southwest Logo
8:20 am - 3:35 pm
BOI
-
TYS
5h 15m
1 stop
Southwest Logo
5:20 pm - 9:50 pm
TYS
-
BOI
6h 30m
1 stop
$403Southwest
Sat, Oct 17 - Sat, Oct 24
Southwest Logo
8:20 am - 3:35 pm
BOI
-
TYS
5h 15m
1 stop
Southwest Logo
1:30 pm - 9:50 pm
TYS
-
BOI
10h 20m
2 stops
$408Southwest
Tue, Sep 29 - Wed, Sep 30
United Airlines Logo
7:05 pm - 9:45 am
BOI
-
TYS
12h 40m
2 stops
United Airlines Logo
5:05 pm - 9:31 pm
TYS
-
BOI
6h 26m
1 stop
$412United Airlines
Sat, Oct 17 - Sat, Oct 24
Southwest Logo
5:35 am - 4:40 pm
BOI
-
TYS
9h 05m
2 stops
Southwest Logo
1:30 pm - 9:50 pm
TYS
-
BOI
10h 20m
2 stops
$413Southwest
Tue, Oct 13 - Tue, Oct 20
Southwest Logo
8:10 am - 3:25 pm
BOI
-
TYS
5h 15m
1 stop
Southwest Logo
7:00 am - 3:00 pm
TYS
-
BOI
10h 00m
2 stops
$421Southwest
Wed, Aug 5 - Sun, Aug 9
Southwest Logo
7:05 am - 6:55 pm
BOI
-
TYS
9h 50m
2 stops
Southwest Logo
5:55 pm - 12:25 am
TYS
-
BOI
8h 30m
2 stops
$436Southwest
Wed, Aug 5 - Sun, Aug 9
United Airlines Logo
12:34 pm - 8:44 pm
BOI
-
TYS
6h 10m
1 stop
United Airlines Logo
6:00 am - 11:32 am
TYS
-
BOI
7h 32m
1 stop
$438United Airlines
Sat, Jun 27 - Sat, Jul 4
Delta Logo
2:04 pm - 12:02 am
BOI
-
TYS
7h 58m
1 stop
Delta Logo
6:45 am - 1:51 pm
TYS
-
BOI
9h 06m
1 stop
$443Delta
Sat, Jun 27 - Sat, Jul 4
Delta Logo
2:04 pm - 12:02 am
BOI
-
TYS
7h 58m
1 stop
Delta Logo
6:45 am - 1:51 pm
TYS
-
BOI
9h 06m
1 stop
$473Delta
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 October.

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$188
Best time to beat the crowds but there is an average 7% increase in price.
Most popular time to fly with an average 5% 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 $188 for a one-way ticket and $375 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 12437 reviews
7.8Comfort
8.5Crew
7.1Food
8.1Boarding
7.0Entertainment
Airline reviews

Nice to get moved from a middle seat to an aisle seat upon request, but why wasn’t I put in an aisle seat to begin with? The flight was not full.

8.0 ExcellentDane, May 2026
BOS - PDX
Read more Alaska Airlines reviews

Nice to get moved from a middle seat to an aisle seat upon request, but why wasn’t I put in an aisle seat to begin with? The flight was not full.

It might not have been their fault, but there was a two hour delay due to weather. Then we boarded and were about to leave when they said there were more problems at the destination, took us back to the gate where we had to fully deplane. But then five minutes later, they said everything was fine and to get back on the plane. This was the part that pissed everybody off.

I'm tall and the seats do not have a headrest so its hard to get comfortable. Staff and checking were all great.

Internet was great. It was nice to watch a movie. The crew was very nice.

It was efficient and great. DIA took a while to let us leave but other than that it was great.

I was surprised by everything. The cleanliness, the punctuality, the friendliness of the crew… and the Wi-Fi! Please keep up the good work.

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.

No service flight that took 5 hrs and a stop at an unscheduled airport. Crew and pilots did their jobs

Clean planes and not take my comfort class seat away.

Weather caused a long delay, but the efficiency and updates from the pilot were helpful. We were able to make our connection fortunately.

Planes were clean, no water or snacks on either flight.

Free & relatively fast Wi-Fi. Would've liked a wider drink selection.

I continue to be satisfied with Delta’s excellent service out of LGA. The digit id works well and gets me through security in no time. Whenever possible, I choose Delta.

Was revoked with Jet Blue due to delay from Kenya Air

Enjoyed it very much. Especially liked the free WiFi that Delta offers.

Smooth flight. Left on time, and got in 15 minutes early. Onboard video was great

For some reason, TSA Atlanta didn’t have my bag on the flight on time and they don’t have to provide Delta a reason for that.

It was a short flight so I was expecting too much

Horrifying Almost 2 million miles. Bring your own food and drink. One coffee or drink every three hours. Have to order meals on app more than 24 hours ahead Tiny and dirty bathrooms

Flight was delayed but more than 90 minutes. This caused me to miss my available windows for pick-up by a friend. I had to pay $125 for an uber back home from the airport which was an added expense that I had not budgeted for my trip. Staff was friendly.

Seat pitch is horrible especially on the 15 hour flight. Gate crew at SFO was Outstanding. The flight crew was also great.

Had a one hour delay due to mechanical issue. I didn’t think I’d be able to make my connecting flight, but they waited for me and greeted me when I arrived to help things run smooth.

6 1/2 hours from Tampa to SFO on a Boeing 737. Cramped. No Service. No real food. One pass for coffee at the beginning and a second pass THREE hours later. And check-in in Tampa was nasty even by United standards. And I am at almost TWO million miles on United. It's a non-stop. But terrible service.

MY FAMILY'S LUGGAGE WAS LOST FROM ROME TO BARI. I WAS THE ONLY ONE THAT RECEIVED MY LUGGAGE FROM ROME TO BARI. AFTER DEPLANING IN BARI, WE WASTED A LOT OF TIME AT BAG CLAIMS LOST AND FOUND REPORTING THE CLAIM AND PLEADING FOR THE BAGS TO BE DELIVERED THE NEXT DAY. WE WERE TOLD THAT IT TAKES 3 DAYS MINIMUM TO DELIVER. MY DAUGHTER AND MY GIRLFRIEND NEEDED THEIR PERSONAL THINGS AND WE WERE STAYING 3 HOURS AWAY FROM THE BARI AIRPORT. WE HAD TO DRIVE 3 HOURS TO THE AIRPORT TO COLLECT OUR LOST LUGGAGE THE NEXT DAY. WE ARE NOT HAPPY WITH THE EXPERIENCE

We had a delay, but thankfully I made it to my connection. Overall it went smooth

The flight had a delay but I made it to my connection. Flight was smooth overall

As I wrote earlier, poor planning and/or communication. At least twice, we were told that we would be boarding in less than ten minutes, only to have the flight again delayed at least another hour.

Movies on my phone are great. It would be nice to have a gluten free snack option.

It was what i expected. I like the movies you can access from your phone. It would be nice if there was a gluten free snack offered. But I did bring my own snack knowing there would not be a gluten free option

The flight was peaceful, just s slight turbulence, pilots and crews were all nice and made a great job! Arrived safely in the Philippines. Thank you ya’ll!

Ontario airport boarding was very easy to park and access, is clean and TSA took 10 minutes total. Check-in was a breeze and cruise was very nice.

American Airlines II: Delay Boogaloo. Multiple gate changes, delays, boarded and then MORE delays. I hate to say this won’t matter, but posting stuff about major corporations in 2026 is a post-modern “scream into the void.” Was multiple hours late coming home, so there you go.

Awful, tons of delays, I got into Chicago multiple hours late meaning I hit the very traffic I tried so desperately to avoid. Just empty apologies from American Airlines text alerts. Trash behavior from a trash airline.

The flight attendants were very friendly, efficient, and helpful. The plane was ahead of schedule, and it all went very smoothly. Thank you.

They lost my baggage and I am still struggling to the information and update

We got delayed getting out of DFW for broken overhead bins. Once the flight got underway the captain kept the seatbelt sign lit the entire flight despite little perceptible turbulence, preventing use of the rest rooms and any sort of refreshment service in the main cabin.

Flight delays for communication overall not a good experience uncomfortable on the plane. Person in front of me reclined his seat, putting them inches from my lap.

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

Information on your arrival and departure airports