$241 Cheap Flights from Idaho Falls (IDA) to Knoxville (TYS)

View $241 flight on Tue, Sep 8, 2026Opens in a new window

Popular airlines from Idaho Falls Regional Airport (IDA) to McGhee Tyson Airport (TYS)

Cheap Flights from Idaho Falls to Knoxville (IDA-TYS)

Prices were available within the past 7 days and start at $241 for one-way flights and $294 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Tue, Mar 10 - Tue, Mar 24
IDA
Idaho Falls
TYS
Knoxville
$294 Roundtrip, found 6 days ago
$294
Roundtrip
found 6 days ago
Select United flight, departing Tue, Mar 10 from Idaho Falls to Knoxville, returning Tue, Mar 24, priced at $294 found 6 days ago
Delta
Sat, Nov 15 - Wed, Nov 19
IDA
Idaho Falls
TYS
Knoxville
$299 Roundtrip, found 1 day ago
$299
Roundtrip
found 1 day ago
Select Delta flight, departing Sat, Nov 15 from Idaho Falls to Knoxville, returning Wed, Nov 19, priced at $299 found 1 day ago
American Airlines
Mon, Nov 10 - Wed, Nov 19
IDA
Idaho Falls
TYS
Knoxville
$319 Roundtrip, found 1 day ago
$319
Roundtrip
found 1 day ago
Select American Airlines flight, departing Mon, Nov 10 from Idaho Falls to Knoxville, returning Wed, Nov 19, priced at $319 found 1 day ago
Delta
Mon, Jan 19 - Tue, Feb 3
IDA
Idaho Falls
TYS
Knoxville
$324 Roundtrip, found 2 days ago
$324
Roundtrip
found 2 days ago
Select Delta flight, departing Mon, Jan 19 from Idaho Falls to Knoxville, returning Tue, Feb 3, priced at $324 found 2 days ago
American Airlines
Tue, Sep 8 - Tue, Sep 15
IDA
Idaho Falls
TYS
Knoxville
$339 Roundtrip, found 3 hours ago
$339
Roundtrip
found 3 hours ago
Select American Airlines flight, departing Tue, Sep 8 from Idaho Falls to Knoxville, returning Tue, Sep 15, priced at $339 found 3 hours ago
Delta
Mon, Nov 10 - Tue, Nov 18
IDA
Idaho Falls
TYS
Knoxville
$349 Roundtrip, found 1 day ago
$349
Roundtrip
found 1 day ago
Select Delta flight, departing Mon, Nov 10 from Idaho Falls to Knoxville, returning Tue, Nov 18, priced at $349 found 1 day ago
United
Tue, Mar 10 - Tue, Mar 24
IDA
Idaho Falls
TYS
Knoxville
$351 Roundtrip, found 6 days ago
$351
Roundtrip
found 6 days ago
Select United flight, departing Tue, Mar 10 from Idaho Falls to Knoxville, returning Tue, Mar 24, priced at $351 found 6 days ago
United
Tue, Mar 10 - Tue, Mar 24
IDA
Idaho Falls
TYS
Knoxville
$353 Roundtrip, found 6 days ago
$353
Roundtrip
found 6 days ago
Select United flight, departing Tue, Mar 10 from Idaho Falls to Knoxville, returning Tue, Mar 24, priced at $353 found 6 days ago
Delta
Sat, Dec 6 - Tue, Dec 9
IDA
Idaho Falls
TYS
Knoxville
$354 Roundtrip, found 3 hours ago
$354
Roundtrip
found 3 hours ago
Select Delta flight, departing Sat, Dec 6 from Idaho Falls to Knoxville, returning Tue, Dec 9, priced at $354 found 3 hours ago
Alaska Airlines
Tue, Jan 6 - Wed, Jan 21
IDA
Idaho Falls
TYS
Knoxville
$478 Roundtrip, found 2 days ago
$478
Roundtrip
found 2 days ago
Select Alaska Airlines flight, departing Tue, Jan 6 from Idaho Falls to Knoxville, returning Wed, Jan 21, priced at $478 found 2 days ago

Find the cheapest month to fly from Idaho Falls (IDA) to Knoxville (TYS)

January is typically the cheapest month to fly

From $288 - $884 per traveler.

Alternative airports near Knoxville

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to McGhee Tyson TYS. Cheapest and Closest option available. Average driving time to city center is 22 minutes. Flights from $409
TYS
McGhee Tyson
CheapestClosest
Average driving time to city center22 min
Flights from $409

Frequently asked questions

How much does a flight from Idaho Falls Regional Airport (IDA) to McGhee Tyson Airport (TYS) cost?
Get a cheap one-way flight from $241 or cheap return flight from $294 from Idaho Falls Regional Airport (IDA) to McGhee Tyson Airport (TYS) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight offers on this route.
What is the cheapest month to fly from Idaho Falls Regional Airport (IDA) to McGhee Tyson Airport (TYS)?
March is the least expensive month to fly from IDA to TYS. Traveling outside of peak seasons is often the key to finding a great deal.
What is the cheapest airline that flies from Idaho Falls Regional Airport (IDA) to McGhee Tyson Airport (TYS)?
Expedia's filter tool lets you easily compare airlines, flight times and fares all in one place. Customize the search to your preferences, then sort by "Price (lowest to highest)" to see which carrier offers the cheapest IDA to TYS flight.
How many flights per day from Idaho Falls Regional Airport (IDA) to McGhee Tyson Airport (TYS)?
Direct flights from Idaho Falls Regional Airport (IDA) to McGhee Tyson Airport (TYS) aren't available daily, so you'll have to take a flight with a layover. Explore your options with our filter tool. Enter your dates and pick either "1 Stop" or "2+ Stops."
What day of the week has the most flights from IDA to TYS?
You'll usually find Tuesday the quietest day for flights, while Fridays are often the busiest.* However this can change from season to season and during peak travel times or public holidays.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Idaho Falls Regional Airport (IDA) to McGhee Tyson Airport (TYS)?
To reach McGhee Tyson Airport (TYS) without delays, select a flight that leaves from Idaho Falls Regional Airport (IDA) before 3 PM. The likelihood of cancellations is 22% higher, on average, for departures after this time.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Idaho Falls Regional Airport (IDA) to McGhee Tyson Airport (TYS) last-minute?
Booking your flight from IDA to TYS shortly before your journey is typically more expensive. But if there's some wiggle room with your schedule, you could grab a cheap last-minute fare.
Is it cheaper to book an IDA to TYS flight and hotel package?
Securing an IDA to TYS flight and hotel package tends to be cheaper than booking separately. With Expedia, you can enjoy the convenience of organizing your travels all in one place. Choose from our extensive range of hotels and then add activities, car rentals and flights to your booking. Bundle it all together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Idaho Falls Regional Airport (IDA) to McGhee Tyson Airport (TYS)?
If you reserved your IDA to TYS flight within the last 24 hours, you may be able to cancel or modify it without any fees. Depending on the airline and the fare type you purchased, additional charges may apply for changes after that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal for further details.

Travel information

Origin airport
Idaho Falls Regional
Destination airport
McGhee Tyson
Airlines serving
Alaska Airlines, American Airlines, Delta, United
Roundtrip price
$294
Distance
1576 mi

Book with confidence

Idaho Falls to Knoxville Flights

The cheapest times to fly from Idaho Falls to Knoxville

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Idaho Falls to Knoxville are during the month of March. You can find some of the cheapest flights from Idaho Falls to Knoxville with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Idaho Falls to Knoxville

Sunday is one of the best days to book for cheap flights from Idaho Falls to Knoxville: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Idaho Falls to Knoxville

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Idaho Falls to Knoxville in 2025. You can also book with separate airlines for your outbound and return journeys, from $241 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Idaho Falls to Knoxville flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Idaho Falls to Knoxville airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Idaho Falls to Knoxville Flights

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*Available to One Key members.