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Idaho Falls

$134+ 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 4/9. Fares are subject to change and may not be available on all flights or dates of travel.
SDF — IDA
Mar 5 — Mar 121
Thu 3/5
Thu 3/12
1 adult, Economy
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Cheap 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 February 3, 2026.

This Alaska Airlines deal was found by Cheapflights users on 2/1. 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 3/48:09 am
CVG
-
IDA
1 stop10h 34m
Alaska Airlines
Sat 3/78:00 am
IDA
-
CVG
1 stop9h 34m
Alaska Airlines
Deal found 2/1$287
This United Airlines deal was found by Cheapflights users on 2/1. 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 3/119:00 am
CVG
-
IDA
1 stop6h 30m
United Airlines
Sat 3/142:35 pm
IDA
-
CVG
1 stop6h 10m
United Airlines
Deal found 2/1$289
This Delta deal was found by Cheapflights users on 2/1. 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 5/25:30 pm
CVG
-
IDA
1 stop7h 10m
Delta
Tue 5/56:58 pm
IDA
-
CVG
2 stops11h 57m
Delta
Deal found 2/1$294
This Alaska Airlines deal was found by Cheapflights users on 2/1. 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.
Tue 3/108:09 am
CVG
-
IDA
1 stop10h 34m
Alaska Airlines
Fri 3/135:20 pm
IDA
-
CVG
1 stop25h 19m
Alaska Airlines
Deal found 2/1$340
This Delta deal was found by Cheapflights users on 2/1. 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 5/96:00 pm
CVG
-
IDA
1 stop6h 42m
Delta
Tue 5/123:16 pm
IDA
-
CVG
1 stop5h 27m
Delta
Deal found 2/1$344
This Expedia deal was found by Cheapflights users on 2/1. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/48:09 am
CVG
-
IDA
1 stop10h 34m
Alaska Airlines
Sun 3/88:00 am
IDA
-
CVG
1 stop10h 39m
Alaska Airlines
Deal found 2/1$348
This United Airlines deal was found by Cheapflights users on 2/1. 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 2/213:25 pm
CVG
-
IDA
1 stop7h 33m
United Airlines
Tue 2/242:40 pm
IDA
-
CVG
1 stop5h 33m
United Airlines
Deal found 2/1$349
This Alaska Airlines deal was found by Cheapflights users on 2/2. 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.
Tue 6/26:43 pm
BNA
-
IDA
1 stop21h 48m
Alaska Airlines
Sat 6/66:00 am
IDA
-
BNA
1 stop9h 23m
Alaska Airlines
Deal found 2/2$369
This United Airlines deal was found by Cheapflights users on 2/1. 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 3/49:00 am
SDF
-
IDA
1 stop6h 30m
United Airlines
Sat 3/72:35 pm
IDA
-
SDF
1 stop5h 24m
United Airlines
Deal found 2/1$369
This Alaska Airlines deal was found by Cheapflights users on 2/1. 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.
Tue 3/38:09 am
CVG
-
IDA
1 stop10h 34m
Alaska Airlines
Fri 3/65:20 pm
IDA
-
CVG
1 stop24h 14m
Alaska Airlines
Deal found 2/1$370
This United Airlines deal was found by Cheapflights users on 2/2. 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 6/98:00 am
CVG
-
IDA
1 stop7h 24m
United Airlines
Tue 6/232:31 pm
IDA
-
CVG
1 stop5h 57m
United Airlines
Deal found 2/2$374
This United Airlines deal was found by Cheapflights users on 2/1. 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.
Thu 3/127:00 am
CVG
-
IDA
2 stops8h 30m
United Airlines
Sun 3/152:35 pm
IDA
-
CVG
1 stop6h 10m
United Airlines
Deal found 2/1$379

Find 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 February 3, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$287
(Alaska Airlines)

One-way from

$134
(Kiwi.com)

Popular in

June

Cheapest in

October

Average price

$341
Provider with most accurate pricing for Louisville Intl-Idaho Falls Fanning Field flight deals.
Search Deals
Provider most trusted by Cheapflights users for Louisville Intl-Idaho Falls Fanning Field flights.
Search Deals
From Kentucky to Idaho Falls Fanning Field
Search Deals
One-way flight from Kentucky to Idaho Falls Fanning Field
Search Deals
Highest demand for flights based on searches. 24% potential increase in price ($152 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 7% potential price decrease ($32 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2026
Search Deals

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 February 3, 2026.
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

CincinnatiIdaho Falls

CVG - IDA

CVGIDA

Cincinnati Cinci./N. Kentucky

Wed 3/11

9:00 am-1:30 pm

1 stop6h 30m

Idaho Falls Fanning Field

Sat 3/14

2:35 pm-10:45 pm

1 stop6h 10m

$289

CincinnatiIdaho Falls

CVG - IDA

CVGIDA

Cincinnati Cinci./N. Kentucky

Sat 5/2

5:30 pm-10:40 pm

1 stop7h 10m

Idaho Falls Fanning Field

Tue 5/5

6:58 pm-8:55 am

2 stops11h 57m

$294

CincinnatiIdaho Falls

CVG - IDA

CVGIDA

Cincinnati Cinci./N. Kentucky

Wed 5/6

9:00 am-1:25 pm

1 stop6h 25m

Idaho Falls Fanning Field

Sat 5/9

2:31 pm-10:30 pm

1 stop5h 59m

$349

CincinnatiIdaho Falls

CVG - IDA

CVGIDA

Cincinnati Cinci./N. Kentucky

Sat 2/21

3:25 pm-8:58 pm

1 stop7h 33m

Idaho Falls Fanning Field

Tue 2/24

2:40 pm-10:13 pm

1 stop5h 33m

$349

CincinnatiIdaho Falls

CVG - IDA

CVGIDA

Cincinnati Cinci./N. Kentucky

Wed 6/3

8:00 am-1:24 pm

1 stop7h 24m

Idaho Falls Fanning Field

Sat 6/6

2:31 pm-10:28 pm

1 stop5h 57m

$349

NashvilleIdaho Falls

BNA - IDA

BNAIDA

Nashville Intl

Tue 6/2

6:43 pm-3:31 pm

1 stop21h 48m

Idaho Falls Fanning Field

Sat 6/6

6:00 am-4:23 pm

1 stop9h 23m

$369

LouisvilleIdaho Falls

SDF - IDA

SDFIDA

Louisville Intl

Wed 3/4

9:00 am-1:30 pm

1 stop6h 30m

Idaho Falls Fanning Field

Sat 3/7

2:35 pm-9:59 pm

1 stop5h 24m

$369

CincinnatiIdaho Falls

CVG - IDA

CVGIDA

Cincinnati Cinci./N. Kentucky

Tue 6/9

8:00 am-1:24 pm

1 stop7h 24m

Idaho Falls Fanning Field

Wed 6/24

2:31 pm-10:28 pm

1 stop5h 57m

$374

CincinnatiIdaho Falls

CVG - IDA

CVGIDA

Cincinnati Cinci./N. Kentucky

Thu 3/12

7:00 am-1:30 pm

2 stops8h 30m

Idaho Falls Fanning Field

Sun 3/15

2:35 pm-10:45 pm

1 stop6h 10m

$379

LouisvilleIdaho Falls

SDF - IDA

SDFIDA

Louisville Intl

Wed 3/11

8:54 am-1:30 pm

1 stop6h 36m

Idaho Falls Fanning Field

Sat 3/14

2:35 pm-9:59 pm

1 stop5h 24m

$394

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/1

Showing 1-10 of 50 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, January is the cheapest month in which you can book a flight from Kentucky to Idaho Falls (average of $268). Flying from Kentucky to Idaho Falls in December is currently the most expensive (average of $441). 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 30m. Fly via United Airlines, Delta, or Alaska Airlines to get the fastest option. Airlines will cover a distance of 1448 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

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

    While some choose either Cincinnati Cinci./N. Kentucky - Idaho Falls Fanning Field or Lexington Blue Grass - 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, January is the cheapest month in which you can book a flight from Kentucky to Idaho Falls (average of $268). Flying from Kentucky to Idaho Falls in December is currently the most expensive (average of $441). 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 airline flying from Kentucky to Idaho Falls

Discover the top airline 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 February 3, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$341Average$482FlexibilityNo cancel feeOn-time69%

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