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Idaho Falls

$110+ 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 8/14. Fares are subject to change and may not be available on all flights or dates of travel.
SDF — IDA
Aug 5 — Aug 121
Tue 8/5
Tue 8/12
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 July 31, 2025.

Round-trip from

$309
(Mytrip)

One-way from

$110
(Mytrip)

Popular in

June

Cheapest in

January

Average price

$488
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. 13% potential increase in price ($81 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 July 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 July 31, 2025.

This Mytrip deal was found by Cheapflights users on 7/29. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/1412:47 pmSDF - IDA
2 stops24h 43mMultiple Airlines
Mon 8/186:20 pmIDA - SDF
2 stops21h 22mMultiple Airlines
Deal found 7/29$309
This Alaska Airlines deal was found by Cheapflights users on 7/30. 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.
Wed 9/179:00 amBNA - IDA
1 stop14h 39mAlaska Airlines
Wed 9/243:57 pmIDA - BNA
1 stop7h 11mAlaska Airlines
Deal found 7/30$350
This American Airlines deal was found by Cheapflights users on 7/31. 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.
Wed 9/176:44 amBNA - IDA
1 stop7h 15mAmerican Airlines
Wed 9/241:35 pmIDA - BNA
1 stop8h 29mAmerican Airlines
Deal found 7/31$351
This Delta deal was found by Cheapflights users on 7/31. 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.
Wed 9/177:34 amBNA - IDA
1 stop5h 52mDelta
Wed 9/246:51 pmIDA - BNA
2 stops12h 44mDelta
Deal found 7/31$356
This Delta deal was found by Cheapflights users on 7/29. 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 9/276:05 amCVG - IDA
1 stop8h 21mDelta
Fri 10/36:51 pmIDA - CVG
2 stops13h 16mDelta
Deal found 7/29$368
This United Airlines deal was found by Cheapflights users on 7/30. 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 8/234:40 pmTYS - IDA
1 stop6h 14mUnited Airlines
Tue 8/265:00 amIDA - TYS
1 stop8h 15mUnited Airlines
Deal found 7/30$379
This Mytrip deal was found by Cheapflights users on 7/30. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/1410:27 pmCVG - IDA
1 stop15h 03mMultiple Airlines
Mon 8/186:20 pmIDA - CVG
2 stops23h 52mMultiple Airlines
Deal found 7/30$392
This Delta deal was found by Cheapflights users on 7/29. 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 9/273:42 pmLEX - IDA
2 stops8h 43mDelta
Fri 10/36:51 pmIDA - LEX
2 stops12h 30mDelta
Deal found 7/29$395
This Alaska Airlines deal was found by Cheapflights users on 7/29. 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 9/266:40 pmCVG - IDA
1 stop29h 59mAlaska Airlines
Sat 10/46:00 amIDA - CVG
1 stop9h 49mAlaska Airlines
Deal found 7/29$402
This American Airlines deal was found by Cheapflights users on 7/29. 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 10/97:32 amSDF - IDA
1 stop7h 09mAmerican Airlines
Tue 10/1412:55 pmIDA - SDF
1 stop18h 30mAmerican Airlines
Deal found 7/29$418
This American Airlines deal was found by Cheapflights users on 7/31. 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 8/292:16 pmTYS - IDA
1 stop9h 02mAmerican Airlines
Sun 8/317:00 amIDA - TYS
1 stop8h 49mAmerican Airlines
Deal found 7/31$448
This United Airlines deal was found by Cheapflights users on 7/31. 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 10/286:07 amBNA - IDA
2 stops8h 28mUnited Airlines
Sat 11/18:30 amIDA - BNA
2 stops10h 03mUnited Airlines
Deal found 7/31$454

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 July 31, 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

LouisvilleIdaho Falls

SDF - IDA

SDFIDA

Louisville Intl

Thu 8/14

12:47 pm-11:30 am

2 stops24h 43m

Idaho Falls Fanning Field

Mon 8/18

6:20 pm-5:42 pm

2 stops21h 22m

$309

NashvilleIdaho Falls

BNA - IDA

BNAIDA

Nashville Intl

Wed 9/17

9:00 am-10:39 pm

1 stop14h 39m

Idaho Falls Fanning Field

Wed 9/24

3:57 pm-12:08 am

1 stop7h 11m

$350

NashvilleIdaho Falls

BNA - IDA

BNAIDA

Nashville Intl

Wed 9/17

6:44 am-12:59 pm

1 stop7h 15m

Idaho Falls Fanning Field

Wed 9/24

1:35 pm-11:04 pm

1 stop8h 29m

$351

NashvilleIdaho Falls

BNA - IDA

BNAIDA

Nashville Intl

Wed 9/17

7:34 am-12:26 pm

1 stop5h 52m

Idaho Falls Fanning Field

Wed 9/24

6:51 pm-8:35 am

2 stops12h 44m

$356

CincinnatiIdaho Falls

CVG - IDA

CVGIDA

Cincinnati Cinci./N. Kentucky

Sat 9/27

6:05 am-12:26 pm

1 stop8h 21m

Idaho Falls Fanning Field

Fri 10/3

6:51 pm-10:07 am

2 stops13h 16m

$368

KnoxvilleIdaho Falls

TYS - IDA

TYSIDA

Knoxville McGhee Tyson

Sat 8/23

4:40 pm-8:54 pm

1 stop6h 14m

Idaho Falls Fanning Field

Tue 8/26

5:00 am-3:15 pm

1 stop8h 15m

$379

CincinnatiIdaho Falls

CVG - IDA

CVGIDA

Cincinnati Cinci./N. Kentucky

Thu 8/14

10:27 pm-11:30 am

1 stop15h 03m

Idaho Falls Fanning Field

Mon 8/18

6:20 pm-8:12 pm

2 stops23h 52m

$392

LexingtonIdaho Falls

LEX - IDA

LEXIDA

Lexington Blue Grass

Sat 9/27

3:42 pm-10:25 pm

2 stops8h 43m

Idaho Falls Fanning Field

Fri 10/3

6:51 pm-9:21 am

2 stops12h 30m

$395

CincinnatiIdaho Falls

CVG - IDA

CVGIDA

Cincinnati Cinci./N. Kentucky

Fri 9/26

6:40 pm-10:39 pm

1 stop29h 59m

Idaho Falls Fanning Field

Sat 10/4

6:00 am-5:49 pm

1 stop9h 49m

$402

LouisvilleIdaho Falls

SDF - IDA

SDFIDA

Louisville Intl

Thu 10/9

7:32 am-12:41 pm

1 stop7h 09m

Idaho Falls Fanning Field

Tue 10/14

12:55 pm-9:25 am

1 stop18h 30m

$418

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/30

Showing 1-10 of 31 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.

How much does it cost to fly round-trip from Kentucky to Idaho Falls?

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 July 31, 2025.
See what other customers who have flown with Alaska Airlines, Delta, and United Airlines from Kentucky to Idaho Falls have to say. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Boarding

8.1

Food

7.1

Crew

8.5

Overall

8.0

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Boarding

8.1

Food

7.1

Crew

8.5

Overall

8.0

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Delta
8.0
Very good
7,981 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Boarding

8.1

Food

7.1

Crew

8.5

Overall

8.0

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
United Airlines
7.4
Good
8,900 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Boarding

8.1

Food

7.1

Crew

8.5

Overall

8.0

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Boarding

8.1

Food

7.1

Crew

8.5

Overall

8.0

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Allegiant Air
7.2
Good
702 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Boarding

8.1

Food

7.1

Crew

8.5

Overall

8.0

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.

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.

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

    For one-way options, check prices for Allegiant Air. According to our data, you can fly for as low as $110. Users have also found prices from $188 and $194 on Delta and American Airlines, respectively.

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

    While some choose either Cincinnati Cinci./N. Kentucky - Idaho Falls Fanning Field or Knoxville McGhee Tyson - 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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Alternative routes for Kentucky to Idaho Falls

See prices for flight routes from nearby airports that may be better suited for you.
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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 July 31, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$278Average$590FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$324Average$571FlexibilityNo cancel feeOn-time69%

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