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Idaho Falls

$198+ Cheap flights from Tennessee to Idaho Falls (IDA)

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 12/5. Fares are subject to change and may not be available on all flights or dates of travel.
BNA — IDA
Oct 16 — Oct 231
Thu 10/16
Thu 10/23
1 adult, Economy
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Cheap flight deals from Tennessee to Idaho Falls

Keep the following information in mind while searching for Tennessee to Idaho Falls flight deals. Data was last updated September 16, 2025.

Round-trip from

$349
(United Airlines)

One-way from

$198
(American Airlines)

Popular in

December

Cheapest in

April

Average price

$603
From Tennessee to Idaho Falls Fanning Field
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One-way flight from Tennessee to Idaho Falls Fanning Field
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Highest demand for flights based on searches. 34% potential increase in price ($318 potential increase over avg. RT price).
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Cheapest flight prices on average. 6% potential price decrease ($37 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find flight deals from Tennessee to Idaho Falls

Cheapest flights from Tennessee to Idaho Falls
Explore the most affordable flight options available from Tennessee to Idaho Falls. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 16, 2025.

This United Airlines deal was found by Cheapflights users on 9/14. 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.
Tue 9/309:30 amTYS - IDA
2 stops9h 48mUnited Airlines
Sat 10/49:41 amIDA - TYS
2 stops11h 09mUnited Airlines
Deal found 9/14$349
This American Airlines deal was found by Cheapflights users on 9/14. 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 12/57:00 amMEM - IDA
1 stop7h 27mAmerican Airlines
Mon 12/81:58 pmIDA - MEM
1 stop7h 37mAmerican Airlines
Deal found 9/14$364
This Hawaiian Airlines deal was found by Cheapflights users on 9/14. 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/287:15 amBNA - IDA
1 stop8h 58mHawaiian Airlines
Sat 11/16:05 amIDA - BNA
1 stop7h 44mHawaiian Airlines
Deal found 9/14$388
This United Airlines deal was found by Cheapflights users on 9/14. 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 12/53:25 pmMEM - IDA
1 stop6h 47mUnited Airlines
Sun 12/72:45 pmIDA - MEM
1 stop5h 36mUnited Airlines
Deal found 9/14$390
This American Airlines deal was found by Cheapflights users on 9/14. 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 12/57:00 amMEM - IDA
1 stop7h 27mAmerican Airlines
Sun 12/71:58 pmIDA - MEM
1 stop7h 28mAmerican Airlines
Deal found 9/14$405
This Delta deal was found by Cheapflights users on 9/15. 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.
Tue 10/285:00 pmBNA - IDA
1 stop6h 15mDelta
Sat 11/11:15 pmIDA - BNA
1 stop7h 45mDelta
Deal found 9/15$415
This United Airlines deal was found by Cheapflights users on 9/13. 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.
Wed 10/154:40 pmTYS - IDA
1 stop6h 12mUnited Airlines
Tue 10/215:00 amIDA - TYS
1 stop8h 06mUnited Airlines
Deal found 9/13$428
This American Airlines deal was found by Cheapflights users on 9/14. 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 9/302:07 pmTYS - IDA
1 stop9h 18mAmerican Airlines
Sat 10/41:35 pmIDA - TYS
1 stop8h 46mAmerican Airlines
Deal found 9/14$429
This United Airlines deal was found by Cheapflights users on 9/15. 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.
Tue 10/145:53 pmTYS - IDA
2 stops17h 55mUnited Airlines
Sat 10/1810:50 amIDA - TYS
2 stops10h 00mUnited Airlines
Deal found 9/15$473
This American Airlines deal was found by Cheapflights users on 9/15. 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 9/303:17 pmBNA - IDA
1 stop7h 08mAmerican Airlines
Sat 10/46:44 amIDA - BNA
1 stop7h 59mAmerican Airlines
Deal found 9/15$481
This United Airlines deal was found by Cheapflights users on 9/15. 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.
Tue 9/306:00 amBNA - IDA
2 stops12h 18mUnited Airlines
Sat 10/42:35 pmIDA - BNA
1 stop6h 00mUnited Airlines
Deal found 9/15$486
This United Airlines deal was found by Cheapflights users on 9/16. 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.
Wed 10/14:40 pmTYS - IDA
1 stop8h 09mUnited Airlines
Sun 10/57:00 amIDA - TYS
1 stop6h 06mUnited Airlines
Deal found 9/16$510

Cheapflights Fare Finder

 
Customize your flight search to find flights from Tennessee 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 September 16, 2025.
Use the filters below to find and compare flights from Tennessee to Idaho Falls that are best for you.

Fly from

Tennessee

Fly to

Idaho Falls

Route

Depart

Return

Price

KnoxvilleIdaho Falls

TYS - IDA

TYSIDA

Knoxville McGhee Tyson

Tue 9/30

9:30 am-5:18 pm

2 stops9h 48m

Idaho Falls Fanning Field

Sat 10/4

9:41 am-10:50 pm

2 stops11h 09m

$349

MemphisIdaho Falls

MEM - IDA

MEMIDA

Memphis

Fri 12/5

7:00 am-1:27 pm

1 stop7h 27m

Idaho Falls Fanning Field

Mon 12/8

1:58 pm-10:35 pm

1 stop7h 37m

$364

MemphisIdaho Falls

MEM - IDA

MEMIDA

Memphis

Thu 1/1

9:22 am-10:21 pm

2 stops13h 59m

Idaho Falls Fanning Field

Thu 1/8

1:44 pm-10:17 pm

1 stop7h 33m

$369

NashvilleIdaho Falls

BNA - IDA

BNAIDA

Nashville Intl

Tue 10/28

7:15 am-3:13 pm

1 stop8h 58m

Idaho Falls Fanning Field

Sat 11/1

3:50 pm-12:17 am

1 stop7h 27m

$388

MemphisIdaho Falls

MEM - IDA

MEMIDA

Memphis

Fri 12/5

3:25 pm-9:12 pm

1 stop6h 47m

Idaho Falls Fanning Field

Sun 12/7

2:45 pm-9:21 pm

1 stop5h 36m

$390

MemphisIdaho Falls

MEM - IDA

MEMIDA

Memphis

Fri 12/5

7:00 am-1:27 pm

1 stop7h 27m

Idaho Falls Fanning Field

Sun 12/7

1:58 pm-10:26 pm

1 stop7h 28m

$405

NashvilleIdaho Falls

BNA - IDA

BNAIDA

Nashville Intl

Tue 10/28

5:00 pm-10:15 pm

1 stop6h 15m

Idaho Falls Fanning Field

Sat 11/1

1:15 pm-10:00 pm

1 stop7h 45m

$415

MemphisIdaho Falls

MEM - IDA

MEMIDA

Memphis

Thu 1/1

8:15 am-1:30 pm

1 stop6h 15m

Idaho Falls Fanning Field

Thu 1/8

2:40 pm-8:41 pm

1 stop5h 01m

$420

KnoxvilleIdaho Falls

TYS - IDA

TYSIDA

Knoxville McGhee Tyson

Wed 10/15

4:40 pm-8:52 pm

1 stop6h 12m

Idaho Falls Fanning Field

Tue 10/21

5:00 am-3:06 pm

1 stop8h 06m

$428

KnoxvilleIdaho Falls

TYS - IDA

TYSIDA

Knoxville McGhee Tyson

Tue 9/30

2:07 pm-9:25 pm

1 stop9h 18m

Idaho Falls Fanning Field

Sat 10/4

1:35 pm-12:21 am

1 stop8h 46m

$429

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/14

Showing 1-10 of 32 results
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Best time to book a flight from Tennessee to Idaho Falls

Have a flexible travel schedule? Discover the best time to fly to Idaho Falls from Tennessee 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.

Cheapflights Insights

Everything you need to know about your flight from Tennessee to Idaho Falls

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

Currently, October is the cheapest month in which you can book a flight from Tennessee to Idaho Falls (average of $380). Flying from Tennessee to Idaho Falls in December is currently the most expensive (average of $578). 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 TN to IDA?

Find hourly flight availability from Tennessee 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 September 16, 2025.

When flying from Tennessee to Idaho Falls, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Related info for your journey

Find useful and relevant information for your journey from Tennessee 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 airport do you fly into for flights to Idaho Falls from Tennessee?

    If you book a flight to Idaho Falls from Tennessee, you will be flying to Fanning Field, which is the city’s only airport. Idaho Falls Fanning Field (IDA) is located 3.8 mi from the center of Idaho Falls.

  • How long is the flight from Tennessee to Idaho Falls?

    A quick flight from Tennessee to Idaho Falls can take about 7h 27m. United Airlines provides one of the quickest options available for as low as $364. Airlines will cover a distance of 1312 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the cheapest airlines to fly from Tennessee to Idaho Falls one-way?

    One-way options have recently been found by users for as low as $198 on American Airlines. Other airlines that offer cheap prices include Hawaiian Airlines from $203 and United Airlines from $256 one-way.

  • What are the most popular routes from Tennessee to Idaho Falls?

    The most popular flight routes from Tennessee to Idaho Falls are Nashville Intl - Idaho Falls Fanning Field, Memphis - Idaho Falls Fanning Field and Knoxville McGhee Tyson - Idaho Falls Fanning Field.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Tennessee 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 Tennessee to Idaho Falls?

    Currently, October is the cheapest month in which you can book a flight from Tennessee to Idaho Falls (average of $380). Flying from Tennessee to Idaho Falls in December is currently the most expensive (average of $578). 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 Idaho Falls?

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

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Alternative routes for Tennessee to Idaho Falls

See prices for flight routes from nearby airports that may be better suited for you.
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Top 3 airlines flying from Tennessee to Idaho Falls

Discover the top 3 airlines that operate flights from Tennessee 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 September 16, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$193Average$632FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$268Average$672FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$384Average$621FlexibilityNo cancel feeOn-time69%

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