$187+ Cheap flights from Knoxville to Boise (TYS - BOI)
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 6/17. Fares are subject to change and may not be available on all flights or dates of travel.
TYS — BOI
Jul 2 — Jul 91
Round-trip
1 adult, Economy
We work with more than 300 partners to bring you better travel deals
Find cheap flights from Knoxville to Boise with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Knoxville to Boise
Cheapest
Best
Last-minute
One-way
Cheapest flights from Knoxville to BoiseExplore the most affordable flight options available from Knoxville to Boise. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 2, 2026.
Explore the most affordable flight options available from Knoxville to Boise. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 2, 2026.
This Gotogate deal was found by Cheapflights users on 6/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/18:32 pm
TYS
- BOI
1 stop17h 58m
Frontier
Sun 7/51:24 pm
BOI
- TYS
1 stop28h 00m
Frontier
Deal found 6/1![Frontier logo]()
$339
This Booking.com deal was found by Cheapflights users on 5/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/298:32 pm
TYS
- BOI
1 stop17h 58m
Frontier
Tue 7/71:24 pm
BOI
- TYS
1 stop28h 00m
Frontier
Deal found 5/30![Frontier logo]()
$342
This Gotogate deal was found by Cheapflights users on 5/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/228:19 pm
TYS
- BOI
1 stop18h 10m
Frontier
Tue 7/281:24 pm
BOI
- TYS
1 stop28h 00m
Frontier
Deal found 5/30![Frontier logo]()
$360
This Booking.com deal was found by Cheapflights users on 6/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/178:32 pm
TYS
- BOI
1 stop17h 58m
Frontier
Sun 6/211:25 pm
BOI
- TYS
1 stop28h 12m
Frontier
Deal found 6/1![Frontier logo]()
$383
This Southwest deal was found by Cheapflights users on 5/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/111:55 pm
TYS
- BOI
2 stops11h 15m
Southwest
Sun 8/164:45 pm
BOI
- TYS
2 stops17h 10m
Southwest
Deal found 5/29![Southwest logo]()
$389
This Southwest deal was found by Cheapflights users on 5/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/53:00 pm
TYS
- BOI
1 stop10h 10m
Southwest
Sat 8/158:30 am
BOI
- TYS
1 stop5h 40m
Southwest
Deal found 5/31![Southwest logo]()
$410
This Southwest deal was found by Cheapflights users on 6/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/34:50 pm
TYS
- BOI
1 stop7h 45m
Southwest
Mon 9/78:05 am
BOI
- TYS
1 stop5h 50m
Southwest
Deal found 6/1![Southwest logo]()
$420
This American Airlines deal was found by Cheapflights users on 6/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/56:03 am
TYS
- BOI
1 stop7h 19m
American Airlines
Mon 9/72:49 pm
BOI
- TYS
1 stop6h 29m
American Airlines
Deal found 6/1![American Airlines logo]()
$423
This American Airlines deal was found by Cheapflights users on 5/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/56:03 am
TYS
- BOI
1 stop7h 19m
American Airlines
Tue 8/1812:12 pm
BOI
- TYS
1 stop9h 06m
American Airlines
Deal found 5/31![American Airlines logo]()
$426
This Southwest deal was found by Cheapflights users on 5/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/104:20 pm
TYS
- BOI
1 stop8h 40m
Southwest
Tue 7/216:00 am
BOI
- TYS
2 stops10h 20m
Southwest
Deal found 5/29![Southwest logo]()
$431
Best flights from Knoxville to BoiseDiscover carefully curated flight deals from Knoxville to Boise that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 2, 2026.
Discover carefully curated flight deals from Knoxville to Boise that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 2, 2026.
This Southwest deal was found by Cheapflights users on 5/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/117:00 am
TYS
- BOI
2 stops8h 40m
Southwest
Sun 8/168:05 am
BOI
- TYS
1 stop7h 10m
Southwest
Deal found 5/29![Southwest logo]()
$383
This Southwest deal was found by Cheapflights users on 5/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/51:55 pm
TYS
- BOI
2 stops11h 15m
Southwest
Sat 8/158:30 am
BOI
- TYS
1 stop5h 40m
Southwest
Deal found 5/31![Southwest logo]()
$410
This Southwest deal was found by Cheapflights users on 6/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/56:50 am
TYS
- BOI
2 stops8h 55m
Southwest
Mon 9/78:05 am
BOI
- TYS
1 stop5h 50m
Southwest
Deal found 6/1![Southwest logo]()
$425
This Southwest deal was found by Cheapflights users on 5/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/222:45 pm
TYS
- BOI
2 stops11h 45m
Southwest
Tue 7/286:00 am
BOI
- TYS
2 stops10h 20m
Southwest
Deal found 5/30![Southwest logo]()
$436
This Southwest deal was found by Cheapflights users on 5/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/104:20 pm
TYS
- BOI
2 stops10h 55m
Southwest
Tue 7/216:00 am
BOI
- TYS
2 stops10h 20m
Southwest
Deal found 5/29![Southwest logo]()
$436
This Southwest deal was found by Cheapflights users on 5/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/234:20 pm
TYS
- BOI
1 stop8h 40m
Southwest
Thu 7/308:45 am
BOI
- TYS
2 stops10h 30m
Southwest
Deal found 5/28![Southwest logo]()
$512
This Southwest deal was found by Cheapflights users on 6/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/32:05 pm
TYS
- BOI
2 stops10h 30m
Southwest
Mon 9/78:05 am
BOI
- TYS
2 stops9h 50m
Southwest
Deal found 6/1![Southwest logo]()
$526
This Southwest deal was found by Cheapflights users on 5/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/264:20 pm
TYS
- BOI
2 stops10h 50m
Southwest
Tue 7/76:00 am
BOI
- TYS
2 stops10h 20m
Southwest
Deal found 5/30![Southwest logo]()
$527
This Southwest deal was found by Cheapflights users on 5/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/211:55 pm
TYS
- BOI
2 stops11h 00m
Southwest
Sat 11/287:45 am
BOI
- TYS
1 stop7h 25m
Southwest
Deal found 5/30![Southwest logo]()
$528
Last-minute flights from Knoxville to BoiseDiscover last-minute flight deals from Knoxville to Boise. Data last updated June 2, 2026 and is based on user searches.
Discover last-minute flight deals from Knoxville to Boise. Data last updated June 2, 2026 and is based on user searches.
This Booking.com deal was found by Cheapflights users on 6/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/178:32 pm
TYS
- BOI
1 stop17h 58m
Frontier
Sun 6/211:25 pm
BOI
- TYS
1 stop28h 12m
Frontier
Deal found 6/1![Frontier logo]()
$383
This Booking.com deal was found by Cheapflights users on 5/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/298:32 pm
TYS
- BOI
1 stop17h 58m
Frontier
Tue 7/71:24 pm
BOI
- TYS
1 stop28h 00m
Frontier
Deal found 5/30![Frontier logo]()
$342
This Kiwi.com deal was found by Cheapflights users on 5/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/296:30 am
TYS
- BOI
2 stops32h 00m
Multiple Airlines
Tue 7/71:24 pm
BOI
- TYS
1 stop28h 00m
Multiple Airlines
Deal found 5/30![Multiple Airlines logo]()
$490
This Gotogate deal was found by Cheapflights users on 6/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/18:32 pm
TYS
- BOI
1 stop17h 58m
Frontier
Sun 7/51:24 pm
BOI
- TYS
1 stop28h 00m
Frontier
Deal found 6/1![Frontier logo]()
$339
This Delta deal was found by Cheapflights users on 5/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/16:45 am
TYS
- BOI
1 stop9h 06m
Delta
Mon 7/611:45 pm
BOI
- TYS
1 stop7h 51m
Delta
Deal found 5/29![Delta logo]()
$457
This Southwest deal was found by Cheapflights users on 5/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/104:20 pm
TYS
- BOI
1 stop8h 40m
Southwest
Tue 7/216:00 am
BOI
- TYS
2 stops10h 20m
Southwest
Deal found 5/29![Southwest logo]()
$431
This Southwest deal was found by Cheapflights users on 5/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/104:20 pm
TYS
- BOI
2 stops10h 55m
Southwest
Mon 7/1310:25 am
BOI
- TYS
1 stop6h 45m
Southwest
Deal found 5/31![Southwest logo]()
$462
This Gotogate deal was found by Cheapflights users on 5/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/228:19 pm
TYS
- BOI
1 stop18h 10m
Frontier
Tue 7/281:24 pm
BOI
- TYS
1 stop28h 00m
Frontier
Deal found 5/30![Frontier logo]()
$360
This Southwest deal was found by Cheapflights users on 5/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/234:20 pm
TYS
- BOI
2 stops10h 55m
Southwest
Thu 7/308:45 am
BOI
- TYS
2 stops10h 30m
Southwest
Deal found 5/28![Southwest logo]()
$477
One-way flights from Knoxville to BoiseSearch for one-way flight options from Knoxville to Boise. Find affordable one-way fares based on user searches. Data last updated June 2, 2026.
Search for one-way flight options from Knoxville to Boise. Find affordable one-way fares based on user searches. Data last updated June 2, 2026.
This Booking.com deal was found by Cheapflights users on 6/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/178:32 pm
TYS
- BOI
1 stop17h 58m
Frontier
Deal found 6/1![Frontier logo]()
$187
This Southwest deal was found by Cheapflights users on 5/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/237:30 am
TYS
- BOI
2 stops15h 45m
Southwest
Deal found 5/30![Southwest logo]()
$240
This American Airlines deal was found by Cheapflights users on 5/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/235:31 pm
TYS
- BOI
1 stop7h 50m
American Airlines
Deal found 5/30![American Airlines logo]()
$259
This Southwest deal was found by Cheapflights users on 5/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/207:00 am
TYS
- BOI
2 stops9h 35m
Southwest
Deal found 5/28![Southwest logo]()
$264
This deal was found by Cheapflights users on 5/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/96:00 am
TYS
- BOI
1 stop7h 32m
United Airlines
Deal found 5/28![United Airlines logo]()
$279
This Kiwi.com deal was found by Cheapflights users on 6/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/187:00 am
TYS
- BOI
1 stop7h 30m
Multiple Airlines
Deal found 6/1![Multiple Airlines logo]()
$286
This Delta deal was found by Cheapflights users on 6/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/196:08 pm
TYS
- BOI
1 stop6h 27m
Delta
Deal found 6/1![Delta logo]()
$289
This Southwest deal was found by Cheapflights users on 6/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/175:40 pm
TYS
- BOI
2 stops8h 45m
Southwest
Deal found 6/1![Southwest logo]()
$294
This Southwest deal was found by Cheapflights users on 6/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/184:20 pm
TYS
- BOI
2 stops10h 50m
Southwest
Deal found 6/1![Southwest logo]()
$329
This Kiwi.com deal was found by Cheapflights users on 6/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/191:02 pm
TYS
- BOI
3 stops49h 28m
Multiple Airlines
Deal found 6/1![Multiple Airlines logo]()
$376
This Kiwi.com deal was found by Cheapflights users on 6/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/178:00 am
TYS
- BOI
3 stops32h 17m
Allegiant Air
Deal found 6/1![Allegiant Air logo]()
$657
This American Airlines deal was found by Cheapflights users on 5/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/195:37 am
TYS
- BOI
1 stop7h 41m
American Airlines
Deal found 5/28![American Airlines logo]()
$790
Find flight deals from Knoxville to Boise
Discover tips and strategies to find the most affordable flight options for your journey from Knoxville (TYS) to Boise (BOI). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated June 2, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $339 (Gotogate) |
One-way from | $187 (Booking.com) |
Popular in | December |
Cheapest in | April |
Average price | $587 |
Cheapflights Fare Finder
Customize your flight search to find flights from Knoxville to Boise that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated June 2, 2026.
Use the filters below to find and compare flights from Knoxville to Boise that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
KnoxvilleBoise
TYS - BOI
TYSBOI
Knoxville McGhee Tyson
Tue 8/11
7:00 am-1:40 pm
2 stops8h 40m
Boise Air Term. Gowen Fld
Sun 8/16
8:05 am-5:15 pm
1 stop7h 10m
$383
KnoxvilleBoise
TYS - BOI
TYSBOI
Knoxville McGhee Tyson
Wed 8/5
1:55 pm-11:10 pm
2 stops11h 15m
Boise Air Term. Gowen Fld
Sat 8/15
8:30 am-4:10 pm
1 stop5h 40m
$410
Quickest round-trip
KnoxvilleBoise
TYS - BOI
TYSBOI
Knoxville McGhee Tyson
Sat 9/5
6:50 am-1:45 pm
2 stops8h 55m
Boise Air Term. Gowen Fld
Mon 9/7
8:05 am-3:55 pm
1 stop5h 50m
$425
KnoxvilleBoise
TYS - BOI
TYSBOI
Knoxville McGhee Tyson
Wed 7/22
2:45 pm-12:30 am
2 stops11h 45m
Boise Air Term. Gowen Fld
Tue 7/28
6:00 am-6:20 pm
2 stops10h 20m
$436
KnoxvilleBoise
TYS - BOI
TYSBOI
Knoxville McGhee Tyson
Fri 7/10
4:20 pm-1:15 am
2 stops10h 55m
Boise Air Term. Gowen Fld
Tue 7/21
6:00 am-6:20 pm
2 stops10h 20m
$436
KnoxvilleBoise
TYS - BOI
TYSBOI
Knoxville McGhee Tyson
Thu 7/23
4:20 pm-11:00 pm
1 stop8h 40m
Boise Air Term. Gowen Fld
Thu 7/30
8:45 am-9:15 pm
2 stops10h 30m
$512
KnoxvilleBoise
TYS - BOI
TYSBOI
Knoxville McGhee Tyson
Thu 9/3
2:05 pm-10:35 pm
2 stops10h 30m
Boise Air Term. Gowen Fld
Mon 9/7
8:05 am-7:55 pm
2 stops9h 50m
$526
KnoxvilleBoise
TYS - BOI
TYSBOI
Knoxville McGhee Tyson
Fri 6/26
4:20 pm-1:10 am
2 stops10h 50m
Boise Air Term. Gowen Fld
Tue 7/7
6:00 am-6:20 pm
2 stops10h 20m
$527
KnoxvilleBoise
TYS - BOI
TYSBOI
Knoxville McGhee Tyson
Sat 11/21
1:55 pm-10:55 pm
2 stops11h 00m
Boise Air Term. Gowen Fld
Sat 11/28
7:45 am-5:10 pm
1 stop7h 25m
$528
Cheapest one-way
KnoxvilleBoise
TYS - BOI
TYSBOI
Knoxville McGhee Tyson
Thu 7/23
7:30 am-9:15 pm
2 stops15h 45m
$240
Showing 1-10 of 17 resultsSorted by cheapest first
Compare providers for flights from Knoxville to Boise
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Knoxville to Boise in June.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Knoxville-Boise flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Knoxville-Boise flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Knoxville-Boise flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Knoxville-Boise flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Knoxville-Boise flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from Knoxville to Boise
Have a flexible travel schedule? Discover the best time to fly to Boise from Knoxville with our price prediction graph.
TYS-BOI
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Knoxville to Boise
What is the cheapest month to book a flight from Knoxville to Boise?
Currently, April is the cheapest month in which you can book a flight from Knoxville to Boise (average of $371). Flying from Knoxville to Boise in December is currently the most expensive (average of $918). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
How much does it cost to fly round-trip from Knoxville to Boise?
Reviews of airlines servicing Boise
Get insights into the airlines that provide service to Boise. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Boise. Reviews last updated June 2, 2026.
Read through reviews of airlines operating flights from Knoxville to Boise, such as Delta,United Airlines, andAmerican Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Entertainment
7.8
Boarding
8.1
Crew
8.5
Overall
7.9
Food
7.2
Comfort
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Entertainment
7.8
Boarding
8.1
Crew
8.5
Overall
7.9
Food
7.2
Comfort
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Entertainment
7.8
Boarding
8.1
Crew
8.5
Overall
7.9
Food
7.2
Comfort
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Entertainment
7.8
Boarding
8.1
Crew
8.5
Overall
7.9
Food
7.2
Comfort
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Related info for your journey
Find useful and relevant information for your journey from Knoxville to Boise. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Traveling to a place near Boise?
Book flights to Boise if you plan to visit one of these locationsMeridian
Nampa
Caldwell
Ontario
McCall
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
Alternative routes
Boise flight routes
Complete your trip
Flights by cabin class
Other flight options
Other flights from Knoxville
Popular flights
Alternative routes for Knoxville to Boise
See prices for flight routes from nearby airports that may be better suited for you.
Other flights to Boise
Explore flights to Boise departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on June 2, 2026.
Complete your trip
Complete your trip to Boise by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Knoxville to Boise by cabin class
Find flights from Knoxville to Boise, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Knoxville and Boise flights
Browse other Knoxville and Boise flight options. Last updated on June 2, 2026.
Other flights from Knoxville
Browse through other flights departing from Knoxville. Flights are based on user searches made on Cheapflights and were last updated on June 2, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top 3 airlines flying from Knoxville to Boise
Discover the top 3 airlines that operate flights from Knoxville to Boise. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated June 2, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$288 | Average$500 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$288 | Average$566 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$350 | Average$563 | FlexibilityNo cancel fee | On-time69% |