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Idaho Falls

$174+ Cheap flights from Kentucky 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 10/18. Fares are subject to change and may not be available on all flights or dates of travel.
SDF — IDA
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
1 adult, Economy
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Cheap flight deals from Kentucky to Idaho Falls

Keep the following information in mind while searching for Kentucky to Idaho Falls flight deals. Data was last updated September 11, 2025.

Round-trip from

$279
(Delta)

One-way from

$174
(Kiwi.com)

Popular in

June

Cheapest in

October

Average price

$706
From Kentucky to Idaho Falls Fanning Field
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One-way flight from Kentucky to Idaho Falls Fanning Field
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Highest demand for flights based on searches. 17% potential increase in price ($107 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($24 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 Kentucky to Idaho Falls

Cheapest flights from Kentucky to Idaho Falls
Explore the most affordable flight options available from Kentucky to Idaho Falls. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2025.

This Delta deal was found by Cheapflights users on 9/10. 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 11/1510:12 amLEX - IDA
2 stops14h 21mDelta
Tue 11/186:57 pmIDA - LEX
2 stops12h 30mDelta
Deal found 9/10$279
This Kiwi.com deal was found by Cheapflights users on 9/9. 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 9/258:42 pmBNA - IDA
1 stop20h 23mMultiple Airlines
Mon 9/299:39 pmIDA - BNA
2 stops23h 05mMultiple Airlines
Deal found 9/9$326
This Kiwi.com deal was found by Cheapflights users on 9/10. 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 10/96:55 pmBNA - IDA
1 stop22h 19mMultiple Airlines
Mon 10/137:40 pmIDA - BNA
2 stops27h 19mMultiple Airlines
Deal found 9/10$331
This American Airlines deal was found by Cheapflights users on 9/10. 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 10/217:20 amBNA - IDA
1 stop6h 04mAmerican Airlines
Wed 10/296:44 amIDA - BNA
1 stop7h 38mAmerican Airlines
Deal found 9/10$371
This Hawaiian Airlines deal was found by Cheapflights users on 9/10. 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 11/13:50 pmIDA - BNA
1 stop7h 27mHawaiian Airlines
Deal found 9/10$388
This United Airlines deal was found by Cheapflights users on 9/10. 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 11/1412:50 pmBNA - IDA
2 stops11h 02mUnited Airlines
Mon 11/175:00 amIDA - BNA
1 stop5h 38mUnited Airlines
Deal found 9/10$394
This Alaska Airlines deal was found by Cheapflights users on 9/11. 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 10/104:06 pmBNA - IDA
1 stop7h 32mAlaska Airlines
Fri 10/174:15 pmIDA - BNA
1 stop12h 25mAlaska Airlines
Deal found 9/11$406
This United Airlines deal was found by Cheapflights users on 9/10. 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 11/157:05 amLEX - IDA
2 stops12h 41mUnited Airlines
Tue 11/182:45 pmIDA - LEX
1 stop5h 39mUnited Airlines
Deal found 9/10$409
This American Airlines deal was found by Cheapflights users on 9/10. 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 11/75:31 amCVG - IDA
1 stop9h 57mAmerican Airlines
Mon 11/101:58 pmIDA - CVG
1 stop6h 36mAmerican Airlines
Deal found 9/10$417
This Delta deal was found by Cheapflights users on 9/10. 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 10/285:15 amBNA - IDA
2 stops8h 18mDelta
Sat 11/11:15 pmIDA - BNA
1 stop7h 45mDelta
Deal found 9/10$420
This Kiwi.com deal was found by Cheapflights users on 9/10. 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 9/254:20 pmSDF - IDA
1 stop25h 45mMultiple Airlines
Mon 9/299:39 pmIDA - SDF
2 stops33h 40mMultiple Airlines
Deal found 9/10$423
This American Airlines deal was found by Cheapflights users on 9/10. 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 11/157:00 amLEX - IDA
1 stop8h 28mAmerican Airlines
Tue 11/181:58 pmIDA - LEX
1 stop5h 58mAmerican Airlines
Deal found 9/10$434

Cheapflights Fare Finder

 
Customize your flight search to find flights from Kentucky 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 11, 2025.
Use the filters below to find and compare flights from Kentucky to Idaho Falls that are best for you.

Fly from

Kentucky

Fly to

Idaho Falls

Route

Depart

Return

Price

LexingtonIdaho Falls

LEX - IDA

LEXIDA

Lexington Blue Grass

Sat 11/15

10:12 am-10:33 pm

2 stops14h 21m

Idaho Falls Fanning Field

Tue 11/18

6:57 pm-9:27 am

2 stops12h 30m

$279

LouisvilleIdaho Falls

SDF - IDA

SDFIDA

Louisville Intl

Wed 3/4

9:05 am-1:33 pm

1 stop6h 28m

Idaho Falls Fanning Field

Mon 3/9

2:35 pm-9:57 pm

1 stop5h 22m

$320

NashvilleIdaho Falls

BNA - IDA

BNAIDA

Nashville Intl

Thu 9/25

8:42 pm-4:05 pm

1 stop20h 23m

Idaho Falls Fanning Field

Mon 9/29

9:39 pm-9:44 pm

2 stops23h 05m

$326

NashvilleIdaho Falls

BNA - IDA

BNAIDA

Nashville Intl

Tue 10/21

7:00 am-3:38 pm

1 stop9h 38m

Idaho Falls Fanning Field

Tue 11/4

3:50 pm-12:17 am

1 stop7h 27m

$370

NashvilleIdaho Falls

BNA - IDA

BNAIDA

Nashville Intl

Tue 10/21

3:22 pm-9:48 pm

1 stop7h 26m

Idaho Falls Fanning Field

Thu 10/30

1:11 pm-10:20 pm

1 stop8h 09m

$371

NashvilleIdaho Falls

BNA - IDA

BNAIDA

Nashville Intl

Tue 10/21

10:15 am-9:48 pm

2 stops12h 33m

Idaho Falls Fanning Field

Tue 11/4

7:10 am-3:23 pm

1 stop7h 13m

$376

NashvilleIdaho Falls

BNA - IDA

BNAIDA

Nashville Intl

Tue 10/21

11:27 am-9:48 pm

2 stops11h 21m

Idaho Falls Fanning Field

Wed 10/29

6:44 am-7:57 pm

2 stops12h 13m

$381

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

NashvilleIdaho Falls

BNA - IDA

BNAIDA

Nashville Intl

Fri 11/14

7:15 am-3:13 pm

1 stop8h 58m

Idaho Falls Fanning Field

Mon 11/17

3:50 pm-12:17 am

1 stop7h 27m

$388

NashvilleIdaho Falls

BNA - IDA

BNAIDA

Nashville Intl

Fri 10/10

4:06 pm-10:38 pm

1 stop7h 32m

Idaho Falls Fanning Field

Fri 10/17

4:15 pm-5:40 am

1 stop12h 25m

$406

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/11

Showing 1-10 of 45 results
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Best time to book a flight from Kentucky to Idaho Falls

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

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

Currently, October is the cheapest month in which you can book a flight from Kentucky to Idaho Falls (average of $380). Flying from Kentucky 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.

Related info for your journey

Find useful and relevant information for your journey from Kentucky 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 Kentucky?

    Idaho Falls Fanning Field (IDA) is the airport you will fly into if you book a flight from Kentucky to Idaho Falls. It is only a 3.8 mi journey from Fanning Field (IDA) to Idaho Falls’s city center.

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

    There are many flights that can get you from Kentucky to Idaho Falls in 6h 28m. Fly via Delta, United Airlines, or Hawaiian Airlines to get the fastest option. Airlines will cover a distance of 1417 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 Kentucky to Idaho Falls one-way?

    For one-way options, check prices for Hawaiian Airlines. According to our data, you can fly for as low as $203. Users have also found prices from $231 and $246 on Delta and American Airlines, respectively.

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

    While some choose either Knoxville McGhee Tyson - Idaho Falls Fanning Field or Cincinnati Cinci./N. Kentucky - Idaho Falls Fanning Field, Nashville Intl - Idaho Falls Fanning Field is the most popular route from Kentucky to Idaho Falls.

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

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

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

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

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

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

    Currently, October is the cheapest month in which you can book a flight from Kentucky to Idaho Falls (average of $380). Flying from Kentucky 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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Top 2 airlines flying from Kentucky to Idaho Falls

Discover the top 2 airlines that operate flights from Kentucky 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 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$323Average$488FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$337Average$619FlexibilityNo cancel feeOn-time69%

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