$449 Cheap Flights from Knoxville (TYS) to Twin Falls (TWF)

View $449 flight on Wed, Dec 24, 2025Opens in a new window

Popular airlines from McGhee Tyson Airport (TYS) to Twin Falls, ID (TWF)

Cheap Flights from Knoxville to Twin Falls (TYS-TWF)

Prices were available within the past 7 days and start at $449 for one-way flights and $825 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Thu, May 7 - Tue, May 12
TYS
Knoxville
TWF
Twin Falls
$825 Roundtrip, found 6 days ago
$825
Roundtrip
found 6 days ago
Select Delta flight, departing Thu, May 7 from Knoxville to Twin Falls, returning Tue, May 12, priced at $825 found 6 days ago
Flights from Knoxville (TYS) to Twin Falls (TWF)
Origin airport
McGhee Tyson
Destination airport
Twin Falls
Roundtrip price
$824
Distance
1687 mi

Knoxville to Twin Falls Flights

The cheapest times to fly from Knoxville to Twin Falls

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 Knoxville to Twin Falls are during the month of May. You can find some of the cheapest flights from Knoxville to Twin Falls with Expedia's search tool and vast selection of airlines.

 

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

Sunday is one of the best days to book for cheap flights from Knoxville to Twin Falls: 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 Knoxville to Twin Falls

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 Knoxville to Twin Falls in 2026. You can also book with separate airlines for your outbound and return journeys, from $449 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 Knoxville to Twin Falls 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 Knoxville to Twin Falls 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.

 

Frequently asked questions

How much does a flight from McGhee Tyson Airport (TYS) to Twin Falls Airport (TWF) cost?
Get a cheap one-way flight from $449 or cheap return flight from $825 from McGhee Tyson Airport (TYS) to Twin Falls Airport (TWF) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight offers on this route.
What is the cheapest month to fly from McGhee Tyson Airport (TYS) to Twin Falls Airport (TWF)?
The cheapest month to fly from TYS to TWF is May, when there's less demand. Off-peak months are typically when airlines offer better prices between these airports.
What is the cheapest airline that flies from McGhee Tyson Airport (TYS) to Twin Falls Airport (TWF)?
Expedia's filter tool lets you easily compare airlines, flight times and baggage options all in one place. Customize the search to your preferences, then sort by "Price (lowest to highest)" to find out which carrier offers the cheapest TYS to TWF flight.
How many flights per day from McGhee Tyson Airport (TYS) to Twin Falls Airport (TWF)?
There are no daily nonstop flights from McGhee Tyson Airport (TYS) to Twin Falls Airport (TWF). But you can choose flights with layovers. Filter your search results on Expedia to include one or more stops, and you'll be soaring above the clouds in no time.
What day of the week has the most flights from TYS to TWF?
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 public holidays or peak travel times.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from McGhee Tyson Airport (TYS) to Twin Falls Airport (TWF)?
Select a flight from McGhee Tyson Airport (TYS) to Twin Falls Airport (TWF) that leaves before 3 PM to reduce the risk of cancellations and delays. Later departures have a 22% higher chance of being canceled, on average.**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 McGhee Tyson Airport (TYS) to Twin Falls Airport (TWF) last-minute?
Waiting until right before your break to book a flight from TYS to TWF often results in higher prices. While you may find some last-minute discounts, they're not always guaranteed. Allow some flexibility in your schedule to boost your chances of snagging a bargain.
Is it cheaper to book a TYS to TWF flight and hotel package?
Compared with arranging flights and hotels separately, booking a TYS to TWF flight and hotel package with Expedia could lead to significant savings. What's more, having everything in one convenient place will take the stress out of travel planning. Simply secure your flights and select from our wide range of stays, then tailor your trip with extras like activities, tours and car rentals.
Can I cancel or change the date of my flight from McGhee Tyson Airport (TYS) to Twin Falls Airport (TWF)?
If you reserved your TYS to TWF flight within the last 24 hours, you may be able to cancel or modify it without fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, visit our Customer Service portal if you want more information.

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*Available to One Key members.