$256+ Cheap flights from Idaho Falls to Knoxville (IDA - TYS)
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 9/10. Fares are subject to change and may not be available on all flights or dates of travel.
IDA — TYS
May 29 — Jun 51
Round-trip
1 adult, Economy
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Find cheap flights from Idaho Falls to Knoxville 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
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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 Idaho Falls to Knoxville
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Cheapest flights from Idaho Falls to KnoxvilleExplore the most affordable flight options available from Idaho Falls to Knoxville. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 29, 2026.
Explore the most affordable flight options available from Idaho Falls to Knoxville. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 29, 2026.
This American Airlines deal was found by Cheapflights users on 4/28. 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.
Tue 5/127:48 am
IDA
- TYS
2 stops14h 08m
American Airlines
Tue 5/192:49 pm
TYS
- IDA
2 stops10h 50m
American Airlines
Deal found 4/28![American Airlines logo]()
$404
This American Airlines deal was found by Cheapflights users on 4/26. 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 5/207:48 am
IDA
- TYS
2 stops14h 11m
American Airlines
Sun 5/245:00 am
TYS
- IDA
2 stops10h 38m
American Airlines
Deal found 4/26![American Airlines logo]()
$517
This American Airlines deal was found by Cheapflights users on 4/24. 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 5/97:48 am
IDA
- TYS
2 stops14h 07m
American Airlines
Sat 5/305:33 pm
TYS
- IDA
1 stop6h 42m
American Airlines
Deal found 4/24![American Airlines logo]()
$538
This Kiwi.com deal was found by Cheapflights users on 4/27. 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.
Sun 5/319:46 am
IDA
- TYS
1 stop11h 30m
Multiple Airlines
Thu 6/47:00 am
TYS
- IDA
2 stops35h 08m
Multiple Airlines
Deal found 4/27![Multiple Airlines logo]()
$567
This American Airlines deal was found by Cheapflights users on 4/28. 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.
Wed 6/102:19 pm
IDA
- TYS
1 stop7h 36m
American Airlines
Mon 6/155:37 am
TYS
- IDA
1 stop8h 10m
American Airlines
Deal found 4/28![American Airlines logo]()
$572
This Delta deal was found by Cheapflights users on 4/24. 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.
Sat 5/911:30 am
IDA
- TYS
2 stops10h 26m
Delta
Sat 5/303:05 pm
TYS
- IDA
2 stops9h 37m
Delta
Deal found 4/24![Delta logo]()
$580
This Delta deal was found by Cheapflights users on 4/24. 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 7/246:00 am
IDA
- TYS
2 stops11h 53m
Delta
Tue 1/512:00 pm
TYS
- IDA
2 stops12h 19m
Delta
Deal found 4/24![Delta logo]()
$603
This American Airlines deal was found by Cheapflights users on 4/24. 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 9/102:20 pm
IDA
- TYS
1 stop6h 58m
American Airlines
Sun 9/136:00 am
TYS
- IDA
1 stop7h 32m
American Airlines
Deal found 4/24![American Airlines logo]()
$606
This United Airlines deal was found by Cheapflights users on 4/28. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/182:30 pm
IDA
- TYS
1 stop5h 49m
United Airlines
Tue 7/218:48 am
TYS
- IDA
1 stop6h 37m
United Airlines
Deal found 4/28![United Airlines logo]()
$611
Best flights from Idaho Falls to KnoxvilleDiscover carefully curated flight deals from Idaho Falls to Knoxville that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 29, 2026.
Discover carefully curated flight deals from Idaho Falls to Knoxville that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 29, 2026.
This American Airlines deal was found by Cheapflights users on 4/28. 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.
Tue 5/127:48 am
IDA
- TYS
2 stops14h 08m
American Airlines
Tue 5/192:49 pm
TYS
- IDA
2 stops10h 50m
American Airlines
Deal found 4/28![American Airlines logo]()
$404
This Delta deal was found by Cheapflights users on 4/24. 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.
Sat 5/911:30 am
IDA
- TYS
2 stops10h 26m
Delta
Sat 5/303:05 pm
TYS
- IDA
2 stops9h 37m
Delta
Deal found 4/24![Delta logo]()
$580
This United Airlines deal was found by Cheapflights users on 4/28. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/182:30 pm
IDA
- TYS
1 stop5h 49m
United Airlines
Tue 7/218:48 am
TYS
- IDA
1 stop6h 37m
United Airlines
Deal found 4/28![United Airlines logo]()
$611
This Alaska Airlines deal was found by Cheapflights users on 4/24. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/106:18 am
IDA
- TYS
2 stops15h 00m
Alaska Airlines
Sun 9/136:00 am
TYS
- IDA
2 stops11h 37m
Alaska Airlines
Deal found 4/24![Alaska Airlines logo]()
$728
This American Airlines deal was found by Cheapflights users on 4/26. 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 5/207:48 am
IDA
- TYS
2 stops14h 11m
American Airlines
Sun 5/245:00 am
TYS
- IDA
2 stops10h 38m
American Airlines
Deal found 4/26![American Airlines logo]()
$517
This Delta deal was found by Cheapflights users on 4/24. 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 7/246:00 am
IDA
- TYS
2 stops11h 53m
Delta
Tue 1/512:00 pm
TYS
- IDA
2 stops12h 19m
Delta
Deal found 4/24![Delta logo]()
$603
This American Airlines deal was found by Cheapflights users on 4/25. 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 7/2412:29 pm
IDA
- TYS
1 stop20h 24m
American Airlines
Tue 1/55:23 am
TYS
- IDA
1 stop9h 43m
American Airlines
Deal found 4/25![American Airlines logo]()
$682
This American Airlines deal was found by Cheapflights users on 4/24. 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 7/12:14 pm
IDA
- TYS
1 stop7h 42m
American Airlines
Mon 7/66:26 pm
TYS
- IDA
1 stop20h 58m
American Airlines
Deal found 4/24![American Airlines logo]()
$701
Last-minute flights from Idaho Falls to KnoxvilleDiscover last-minute flight deals from Idaho Falls to Knoxville. Data last updated April 29, 2026 and is based on user searches.
Discover last-minute flight deals from Idaho Falls to Knoxville. Data last updated April 29, 2026 and is based on user searches.
This American Airlines deal was found by Cheapflights users on 4/24. 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 5/97:48 am
IDA
- TYS
2 stops14h 07m
American Airlines
Sat 5/305:33 pm
TYS
- IDA
1 stop6h 42m
American Airlines
Deal found 4/24![American Airlines logo]()
$538
This Delta deal was found by Cheapflights users on 4/24. 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.
Sat 5/911:30 am
IDA
- TYS
2 stops10h 26m
Delta
Sat 5/303:05 pm
TYS
- IDA
2 stops9h 37m
Delta
Deal found 4/24![Delta logo]()
$580
This American Airlines deal was found by Cheapflights users on 4/28. 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.
Tue 5/127:48 am
IDA
- TYS
2 stops14h 08m
American Airlines
Tue 5/192:49 pm
TYS
- IDA
2 stops10h 50m
American Airlines
Deal found 4/28![American Airlines logo]()
$404
This American Airlines deal was found by Cheapflights users on 4/27. 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 5/151:43 pm
IDA
- TYS
1 stop8h 13m
American Airlines
Fri 5/225:33 pm
TYS
- IDA
1 stop6h 42m
American Airlines
Deal found 4/27![American Airlines logo]()
$847
This American Airlines deal was found by Cheapflights users on 4/26. 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 5/207:48 am
IDA
- TYS
2 stops14h 11m
American Airlines
Sun 5/245:00 am
TYS
- IDA
2 stops10h 38m
American Airlines
Deal found 4/26![American Airlines logo]()
$517
This Kiwi.com deal was found by Cheapflights users on 4/27. 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.
Sun 5/319:46 am
IDA
- TYS
1 stop11h 30m
Multiple Airlines
Thu 6/47:00 am
TYS
- IDA
2 stops35h 08m
Multiple Airlines
Deal found 4/27![Multiple Airlines logo]()
$567
This Kiwi.com deal was found by Cheapflights users on 4/27. 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.
Sun 5/319:46 am
IDA
- TYS
1 stop11h 30m
Allegiant Air
Thu 6/42:42 pm
TYS
- IDA
1 stop26h 26m
Allegiant Air
Deal found 4/27![Allegiant Air logo]()
$739
One-way flights from Idaho Falls to KnoxvilleSearch for one-way flight options from Idaho Falls to Knoxville. Find affordable one-way fares based on user searches. Data last updated April 29, 2026.
Search for one-way flight options from Idaho Falls to Knoxville. Find affordable one-way fares based on user searches. Data last updated April 29, 2026.
This American Airlines deal was found by Cheapflights users on 4/24. 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 9/1012:12 pm
IDA
- TYS
1 stop9h 06m
American Airlines
Deal found 4/24![American Airlines logo]()
$256
This Alaska Airlines deal was found by Cheapflights users on 4/24. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/106:18 am
IDA
- TYS
2 stops11h 02m
Alaska Airlines
Deal found 4/24![Alaska Airlines logo]()
$311
This American Airlines deal was found by Cheapflights users on 4/24. 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.
Mon 5/41:43 pm
IDA
- TYS
1 stop8h 13m
American Airlines
Deal found 4/24![American Airlines logo]()
$317
This Delta deal was found by Cheapflights users on 4/24. 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.
Mon 5/46:58 pm
IDA
- TYS
2 stops12h 24m
Delta
Deal found 4/24![Delta logo]()
$322
This Delta deal was found by Cheapflights users on 4/24. 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 7/246:00 am
IDA
- TYS
2 stops11h 53m
Delta
Deal found 4/24![Delta logo]()
$325
This Kiwi.com deal was found by Cheapflights users on 4/24. 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 9/107:50 pm
IDA
- TYS
3 stops44h 15m
Allegiant Air
Deal found 4/24![Allegiant Air logo]()
$357
This Kiwi.com deal was found by Cheapflights users on 4/24. 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 5/410:21 pm
IDA
- TYS
3 stops34h 15m
Multiple Airlines
Deal found 4/24![Multiple Airlines logo]()
$416
This American Airlines deal was found by Cheapflights users on 4/27. 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 7/2412:53 pm
IDA
- TYS
1 stop21h 42m
American Airlines
Deal found 4/27![American Airlines logo]()
$436
This United Airlines deal was found by Cheapflights users on 4/28. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/242:30 pm
IDA
- TYS
1 stop5h 49m
United Airlines
Deal found 4/28![United Airlines logo]()
$458
Find flight deals from Idaho Falls to Knoxville
Discover tips and strategies to find the most affordable flight options for your journey from Idaho Falls (IDA) to Knoxville (TYS). 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 April 29, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $404 (American Airlines) |
One-way from | $256 (American Airlines) |
Popular in | February |
Cheapest in | November |
Average price | $609 |
Cheapflights Fare Finder
Customize your flight search to find flights from Idaho Falls to Knoxville 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 April 29, 2026.
Use the filters below to find and compare flights from Idaho Falls to Knoxville that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
Idaho FallsKnoxville
IDA - TYS
IDATYS
Idaho Falls Fanning Field
Tue 5/12
7:48 am-11:56 pm
2 stops14h 08m
Knoxville McGhee Tyson
Tue 5/19
2:49 pm-11:39 pm
2 stops10h 50m
$404
Idaho FallsKnoxville
IDA - TYS
IDATYS
Idaho Falls Fanning Field
Wed 5/20
7:48 am-11:59 pm
2 stops14h 11m
Knoxville McGhee Tyson
Sun 5/24
5:00 am-1:38 pm
2 stops10h 38m
$517
Idaho FallsKnoxville
IDA - TYS
IDATYS
Idaho Falls Fanning Field
Sat 5/9
11:30 am-11:56 pm
2 stops10h 26m
Knoxville McGhee Tyson
Sat 5/30
3:05 pm-10:42 pm
2 stops9h 37m
$580
Idaho FallsKnoxville
IDA - TYS
IDATYS
Idaho Falls Fanning Field
Fri 7/24
6:00 am-7:53 pm
2 stops11h 53m
Knoxville McGhee Tyson
Tue 1/5
12:00 pm-10:19 pm
2 stops12h 19m
$603
Quickest round-trip
Idaho FallsKnoxville
IDA - TYS
IDATYS
Idaho Falls Fanning Field
Sat 7/18
2:30 pm-10:19 pm
1 stop5h 49m
Knoxville McGhee Tyson
Tue 7/21
8:48 am-1:25 pm
1 stop6h 37m
$611
Idaho FallsKnoxville
IDA - TYS
IDATYS
Idaho Falls Fanning Field
Fri 7/24
12:29 pm-10:53 am
1 stop20h 24m
Knoxville McGhee Tyson
Tue 1/5
5:23 am-1:06 pm
1 stop9h 43m
$682
Idaho FallsKnoxville
IDA - TYS
IDATYS
Idaho Falls Fanning Field
Wed 7/1
2:14 pm-11:56 pm
1 stop7h 42m
Knoxville McGhee Tyson
Mon 7/6
6:26 pm-1:24 pm
1 stop20h 58m
$701
Idaho FallsKnoxville
IDA - TYS
IDATYS
Idaho Falls Fanning Field
Thu 9/10
6:18 am-11:18 pm
2 stops15h 00m
Knoxville McGhee Tyson
Sun 9/13
6:00 am-3:37 pm
2 stops11h 37m
$728
Cheapest one-way
Idaho FallsKnoxville
IDA - TYS
IDATYS
Idaho Falls Fanning Field
Thu 9/10
6:18 am-7:20 pm
2 stops11h 02m
$311
Idaho FallsKnoxville
IDA - TYS
IDATYS
Idaho Falls Fanning Field
Mon 5/4
1:43 pm-11:56 pm
1 stop8h 13m
$317
Showing 1-10 of 13 resultsSorted by cheapest first
- Most accurate provider: When it comes to deals on Idaho Falls-Knoxville flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Idaho Falls-Knoxville flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Idaho Falls-Knoxville flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Idaho Falls-Knoxville 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 Idaho Falls-Knoxville 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 Idaho Falls to Knoxville
Have a flexible travel schedule? Discover the best time to fly to Knoxville from Idaho Falls with our price prediction graph.
IDA-TYS
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 Idaho Falls to Knoxville
Reviews of airlines servicing Knoxville
Get insights into the airlines that provide service to Knoxville. 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 Knoxville. Reviews last updated April 29, 2026.
Peruse reviews from past customers who have flown with United Airlines and American Airlines from Idaho Falls to Knoxville to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Entertainment
7.1
Comfort
7.3
Boarding
7.7
Food
6.6
Overall
7.4
Crew
8.1
Reviews
1 / 20
8.0
ExcellentAnonymous,Apr 2026
DFW - EWR
Entertainment
7.1
Comfort
7.3
Boarding
7.7
Food
6.6
Overall
7.4
Crew
8.1
Reviews
1 / 20
8.0
ExcellentAnonymous,Apr 2026
DFW - EWR
Entertainment
7.1
Comfort
7.3
Boarding
7.7
Food
6.6
Overall
7.4
Crew
8.1
Reviews
1 / 20
8.0
ExcellentAnonymous,Apr 2026
DFW - EWR
Related info for your journey
Find useful and relevant information for your journey from Idaho Falls to Knoxville. 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 Knoxville?
Book flights to Knoxville if you plan to visit one of these locationsCherokee
Crossville
Morristown
Bryson City
Murphy
Alcoa
Oak Ridge
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Other flights to Knoxville
Explore flights to Knoxville departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on April 29, 2026.
Idaho Falls and Knoxville flights
Browse other Idaho Falls and Knoxville flight options. Last updated on April 29, 2026.
Other flights from Idaho Falls
Browse through other flights departing from Idaho Falls. Flights are based on user searches made on Cheapflights and were last updated on April 29, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top 2 airlines flying from Idaho Falls to Knoxville
Discover the top 2 airlines that operate flights from Idaho Falls to Knoxville. 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 April 29, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$329 | Average$618 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$373 | Average$583 | FlexibilityNo cancel fee | On-time69% |