HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Idaho Falls

$379+ Cheap flights from Knoxville to Idaho Falls (TYS - IDA)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 2/7. Fares are subject to change and may not be available on all flights or dates of travel.
TYS — IDA
Jan 26 — Feb 21
Sun 1/26
Sun 2/2
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Knoxville to Idaho Falls 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 Idaho Falls

Discover tips and strategies to find the most affordable flight options for your journey from Knoxville (TYS) to Idaho Falls (IDA). 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 January 21, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$379
(Delta)

Popular in

June

Cheapest in

January

Average price

$298
Provider with most accurate pricing for Knoxville McGhee Tyson-Idaho Falls Fanning Field flight deals.
Search Deals
Provider most trusted by Cheapflights users for Knoxville McGhee Tyson-Idaho Falls Fanning Field flights.
Search Deals
From Knoxville McGhee Tyson to Idaho Falls Fanning Field
Search Deals
High demand for flights, 15% potential price rise
Search Deals
Best time to find cheap flights, 5% potential price drop
Search Deals
Average for round-trip flights in January 2025
Search Deals

Find flight deals from Knoxville to Idaho Falls

Cheapest flights from Knoxville to Idaho Falls
Explore the most affordable flight options available from Knoxville to Idaho Falls. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 21, 2025.

This Delta deal was found by Cheapflights users on 1/20. 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 2/71:00 pmTYS - IDA
2 stops11h 44mDelta
Mon 2/106:58 pmIDA - TYS
2 stops12h 18mDelta
Deal found 1/20$379
This American Airlines deal was found by Cheapflights users on 1/20. 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 2/2012:19 pmTYS - IDA
2 stops11h 52mAmerican Airlines
Mon 2/2412:56 pmIDA - TYS
1 stop8h 53mAmerican Airlines
Deal found 1/20$496
This United Airlines deal was found by Cheapflights users on 1/20. 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.
Thu 2/208:30 amTYS - IDA
1 stop14h 37mUnited Airlines
Tue 2/2510:38 amIDA - TYS
2 stops10h 52mUnited Airlines
Deal found 1/20$563
This Alaska Airlines deal was found by Cheapflights users on 1/20. 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.
Fri 2/711:02 amTYS - IDA
2 stops30h 25mAlaska Airlines
Mon 2/104:04 pmIDA - TYS
3 stops27h 52mAlaska Airlines
Deal found 1/20$970

Find flights from Knoxville to Idaho Falls within your budget

Customize your flight search to find flights from Knoxville to Idaho Falls 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 January 21, 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

KnoxvilleIdaho Falls

TYS - IDA

TYSIDA

Knoxville McGhee Tyson

Fri 2/7

1:00 pm-10:44 pm

2 stops11h 44m

Idaho Falls Fanning Field

Mon 2/10

6:58 pm-9:16 am

2 stops12h 18m

$379

KnoxvilleIdaho Falls

TYS - IDA

TYSIDA

Knoxville McGhee Tyson

Thu 2/20

12:19 pm-10:11 pm

2 stops11h 52m

Idaho Falls Fanning Field

Mon 2/24

12:56 pm-11:49 pm

1 stop8h 53m

$496

KnoxvilleIdaho Falls

TYS - IDA

TYSIDA

Knoxville McGhee Tyson

Thu 2/20

8:30 am-9:07 pm

1 stop14h 37m

Idaho Falls Fanning Field

Tue 2/25

10:38 am-11:30 pm

2 stops10h 52m

$563

KnoxvilleIdaho Falls

TYS - IDA

TYSIDA

Knoxville McGhee Tyson

Fri 2/7

11:02 am-3:27 pm

2 stops30h 25m

Idaho Falls Fanning Field

Mon 2/10

4:04 pm-9:56 pm

3 stops27h 52m

$970

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/20

Compare providers for flights from Knoxville to Idaho Falls

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 Idaho Falls in January.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Knoxville-Idaho Falls flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Knoxville-Idaho Falls flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Knoxville-Idaho Falls flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Knoxville-Idaho Falls 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-Idaho Falls 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 Idaho Falls

Have a flexible travel schedule? Discover the best time to fly to Idaho Falls from Knoxville with our price prediction graph.
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.

Travel insights for flights from Knoxville to Idaho Falls

Get recent, data-driven insights about flights from Knoxville to Idaho Falls including ideal travel times, pricing trends, and more.

What is the cheapest month to book a flight from Knoxville to Idaho Falls?

Currently, October is the cheapest month in which you can book a flight from Knoxville to Idaho Falls (average of $380). Flying from Knoxville to Idaho Falls in July is currently the most expensive (average of $628). 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.

What is the cheapest time of day to fly from TYS to IDA?

Find hourly flight availability from Knoxville to Idaho Falls. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated January 21, 2025.

One of the essential ways to save on airfare from Knoxville to Idaho Falls is to remain as flexible as possible. Flights that are at noon tend to be the most expensive. A flight in the afternoon could potentially save you up to 28% on airfare.

Rainfall in Idaho Falls by month

Plan your trip to Idaho Falls by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Idaho Falls ranges from 0.6 - 2.0 inches per month. May is typically the wettest month, when rainfall can reach 2.0 in. July is typically the driest time to visit Idaho Falls when rainfall is around 0.6 in.

Temperature in Idaho Falls by month

Plan your trip to Idaho Falls by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Idaho Falls, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 69.8 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 23.0 F).

Reviews of airlines servicing Idaho Falls

Get insights into the airlines that provide service to Idaho Falls. 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 Idaho Falls. Reviews last updated January 21, 2025.
Alaska Airlines
8.0
Very good
9,706 reviews

Comfort

7.9

Boarding

8.2

Overall

8.0

Crew

8.5

Entertainment

7.1

Food

7.1

Reviews

1 / 10

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

Alaska Airlines
8.0
Very good
9,706 reviews
Alaska Airlines
8.0
Very good
9,706 reviews

Comfort

7.9

Boarding

8.2

Overall

8.0

Crew

8.5

Entertainment

7.1

Food

7.1

Reviews

1 / 10

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

Delta
8.0
Very good
8,521 reviews
Alaska Airlines
8.0
Very good
9,706 reviews

Comfort

7.9

Boarding

8.2

Overall

8.0

Crew

8.5

Entertainment

7.1

Food

7.1

Reviews

1 / 10

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

United Airlines
7.4
Good
8,982 reviews
Alaska Airlines
8.0
Very good
9,706 reviews

Comfort

7.9

Boarding

8.2

Overall

8.0

Crew

8.5

Entertainment

7.1

Food

7.1

Reviews

1 / 10

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
9,706 reviews

Comfort

7.9

Boarding

8.2

Overall

8.0

Crew

8.5

Entertainment

7.1

Food

7.1

Reviews

1 / 10

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

Related info for your journey

Find useful and relevant information for your journey from Knoxville to Idaho Falls. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What are the cheapest airlines flying from Knoxville to Idaho Falls round-trip?

    Currently priced at $379, Delta will fly you from Knoxville to Idaho Falls and back. In addition to Delta, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from American Airlines and United Airlines - these airlines can fly you to your destination from $496 and $563, respectively. You may be able to fly from Knoxville to Idaho Falls for 35% less than the average price by searching for these airlines.

  • Can I find deals for flights from Knoxville to Idaho Falls that include hotel bookings?

    Yes. In addition to deals on Knoxville to Idaho Falls flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Knoxville to Idaho Falls?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Knoxville to Idaho Falls.

  • Can I find deals for business class flights from Knoxville to Idaho Falls?

    Yes. Cheapflights offers flight deals from Knoxville to Idaho Falls by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Knoxville to Idaho Falls?

    Currently, October is the cheapest month in which you can book a flight from Knoxville to Idaho Falls (average of $380). Flying from Knoxville to Idaho Falls in July is currently the most expensive (average of $628). 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.

See more FAQs

Traveling to a place near Knoxville?

Book flights to Knoxville if you plan to visit one of these locations
Rexburg

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 for Knoxville to Idaho Falls

See prices for flight routes from nearby airports that may be better suited for you.
Nashville to Jackson flights
Nashville to Boise flights
Nashville to Spokane flights
Memphis to Spokane flights
Chattanooga to Boise flights
Knoxville to Jackson flights
Memphis to Jackson flights
Nashville to Idaho Falls flights
Knoxville to Spokane flights
Chattanooga to Jackson flights
Memphis to Boise flights
Knoxville to Boise flights
Chattanooga to Spokane flights
Nashville to Hailey flights
Nashville to West Yellowstone flights
Blountville to Jackson flights
Memphis to Idaho Falls flights
Memphis to West Yellowstone flights
Blountville to Spokane flights
Knoxville to Pocatello flights
Chattanooga to West Yellowstone flights
Memphis to Pocatello flights
Chattanooga to Lewiston flights
Nashville to Pocatello flights
Knoxville to Lewiston flights

Top 2 airlines flying from Knoxville to Idaho Falls

Discover the top 2 airlines that operate flights from Knoxville to Idaho Falls. 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 January 21, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$298Average$568FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$443Average$578FlexibilityNo cancel feeOn-time69%
100% Free
Cheapflights is completely free to use, so you can start saving the moment you arrive.
Book with Flexibility
Our users can plan ahead with confidence and find flights with no change fees
Travel Smart
Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.