HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Idaho

$149+ Cheap flights from Kentucky to Idaho

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 5/20. Fares are subject to change and may not be available on all flights or dates of travel.
SDF — BOI
apr 6 — apr 131
Du 4/6
Du 4/13
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Kentucky to Idaho with Cheapflights

1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”
2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.
3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Kentucky to Idaho

Keep the following information in mind while searching for Kentucky to Idaho flight deals. Data was last updated aprilie 1, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$271
(Alaska Airlines)

One-way from

$149
(Delta)

Popular in

September

Cheapest in

February

Average price

$426
Provider with most accurate pricing for Louisville Intl-Boise Air Term. Gowen Fld flight deals.
Search Deals
Provider most trusted by Cheapflights users for Louisville Intl-Boise Air Term. Gowen Fld flights.
Search Deals
From Kentucky to Idaho
Search Deals
One-way flight from Kentucky to Idaho
Search Deals
Highest demand for flights based on searches. 10% potential increase in price ($55 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($26 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 2025
Search Deals

Find flight deals from Kentucky to Idaho

Cheapest flights from Kentucky to Idaho
Explore the most affordable flight options available from Kentucky to Idaho. Find the lowest fares from popular airlines and budget airlines, with prices last updated on aprilie 1, 2025.

This Alaska Airlines deal was found by Cheapflights users on 3/31. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sâ 8/95:44 pmBNA - GEG
1 stop7h 12mAlaska Airlines
Sâ 8/166:07 pmGEG - BNA
1 stop9h 33mAlaska Airlines
Deal found 3/31$271
This Hawaiian Airlines deal was found by Cheapflights users on 3/30. 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Ma 4/225:52 pmBNA - GEG
1 stop7h 12mHawaiian Airlines
Sâ 4/268:40 pmGEG - BNA
1 stop7h 10mHawaiian Airlines
Deal found 3/30$296
This American Airlines deal was found by Cheapflights users on 4/1. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sâ 6/145:36 amBNA - GEG
1 stop9h 35mAmerican Airlines
Sâ 6/211:51 pmGEG - BNA
1 stop7h 57mAmerican Airlines
Deal found 4/1$297
This Delta deal was found by Cheapflights users on 4/1. 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.
Sâ 4/198:25 amCVG - GEG
1 stop6h 42mDelta
Sâ 4/269:05 amGEG - CVG
1 stop6h 40mDelta
Deal found 4/1$297
This Delta deal was found by Cheapflights users on 3/30. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Ma 4/221:59 pmBNA - GEG
2 stops10h 51mDelta
Sâ 4/262:15 pmGEG - BNA
1 stop6h 17mDelta
Deal found 3/30$302
This United Airlines deal was found by Cheapflights users on 3/31. 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.
Mi 5/287:10 amCVG - GEG
2 stops8h 25mUnited Airlines
Sâ 5/316:25 pmGEG - CVG
2 stops11h 04mUnited Airlines
Deal found 3/31$307
This Delta deal was found by Cheapflights users on 3/31. 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.
Mi 5/286:56 pmSDF - BOI
1 stop7h 26mDelta
Ma 6/101:42 pmBOI - SDF
1 stop8h 20mDelta
Deal found 3/31$307
This American Airlines deal was found by Cheapflights users on 3/31. 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.
Jo 4/245:17 amCVG - BOI
1 stop9h 16mAmerican Airlines
Lu 4/281:23 pmBOI - CVG
1 stop6h 34mAmerican Airlines
Deal found 3/31$313
This Delta deal was found by Cheapflights users on 3/31. 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.
Jo 4/247:40 pmCVG - BOI
1 stop6h 29mDelta
Lu 4/287:50 pmBOI - CVG
2 stops11h 44mDelta
Deal found 3/31$318
This deal was found by Cheapflights users on 3/30. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sâ 8/166:37 pmCVG - GEG
1 stop7h 19mAlaska Airlines
Mi 8/206:00 amGEG - CVG
1 stop8h 41mAlaska Airlines
Deal found 3/30$323
This American Airlines deal was found by Cheapflights users on 3/31. 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.
Mi 5/282:14 pmCVG - GEG
1 stop9h 39mAmerican Airlines
Sâ 5/311:22 pmGEG - CVG
1 stop7h 50mAmerican Airlines
Deal found 3/31$328
This Sun Country Air deal was found by Cheapflights users on 3/30. 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 Sun Country Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sâ 7/267:40 pmBNA - BOI
1 stop23h 16mSun Country Air
Du 8/36:55 pmBOI - BNA
1 stop22h 48mSun Country Air
Deal found 3/30$330

Cheapflights Fare Finder

Customize your flight search to find flights from Kentucky to Idaho 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 aprilie 1, 2025.
Use the filters below to find and compare flights from Kentucky to Idaho that are best for you.

Fly from

Kentucky

Fly to

Idaho

Route

Depart

Return

Price

NashvilleSpokane

BNA - GEG

BNAGEG

Nashville Intl

Sâ 8/9

5:44 pm-10:56 pm

1 stop7h 12m

Spokane

Sâ 8/16

6:07 pm-5:40 am

1 stop9h 33m

$271

NashvilleSpokane

BNA - GEG

BNAGEG

Nashville Intl

Ma 4/22

5:52 pm-11:04 pm

1 stop7h 12m

Spokane

Sâ 4/26

8:40 pm-5:50 am

1 stop7h 10m

$296

NashvilleSpokane

BNA - GEG

BNAGEG

Nashville Intl

Sâ 6/14

5:36 am-1:11 pm

1 stop9h 35m

Spokane

Sâ 6/21

1:51 pm-11:48 pm

1 stop7h 57m

$297

CincinnatiSpokane

CVG - GEG

CVGGEG

Cincinnati Cinci./N. Kentucky

Sâ 4/19

8:25 am-12:07 pm

1 stop6h 42m

Spokane

Sâ 4/26

9:05 am-6:45 pm

1 stop6h 40m

$297

NashvilleSpokane

BNA - GEG

BNAGEG

Nashville Intl

Ma 4/22

1:59 pm-10:50 pm

2 stops10h 51m

Spokane

Sâ 4/26

2:15 pm-10:32 pm

1 stop6h 17m

$302

CincinnatiSpokane

CVG - GEG

CVGGEG

Cincinnati Cinci./N. Kentucky

Mi 5/28

7:10 am-12:35 pm

2 stops8h 25m

Spokane

Sâ 5/31

6:25 pm-8:29 am

2 stops11h 04m

$307

LouisvilleBoise

SDF - BOI

SDFBOI

Louisville Intl

Mi 5/28

6:56 pm-12:22 am

1 stop7h 26m

Boise Air Term. Gowen Fld

Ma 6/10

1:42 pm-12:02 am

1 stop8h 20m

$307

CincinnatiBoise

CVG - BOI

CVGBOI

Cincinnati Cinci./N. Kentucky

Jo 4/24

5:17 am-12:33 pm

1 stop9h 16m

Boise Air Term. Gowen Fld

Lu 4/28

1:23 pm-9:57 pm

1 stop6h 34m

$313

CincinnatiBoise

CVG - BOI

CVGBOI

Cincinnati Cinci./N. Kentucky

Jo 4/24

7:40 pm-12:09 am

1 stop6h 29m

Boise Air Term. Gowen Fld

Lu 4/28

7:50 pm-9:34 am

2 stops11h 44m

$318

CincinnatiSpokane

CVG - GEG

CVGGEG

Cincinnati Cinci./N. Kentucky

Sâ 8/16

6:37 pm-10:56 pm

1 stop7h 19m

Spokane

Mi 8/20

6:00 am-5:41 pm

1 stop8h 41m

$323

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/31

Showing 1-10 of 60 results
1
2
3
...
6

Best time to book a flight from Kentucky to Idaho

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

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

Currently, October is the cheapest month in which you can book a flight from Kentucky to Idaho (average of $314). Flying from Kentucky to Idaho in June is currently the most expensive (average of $419). 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 KY to ID?

Find hourly flight availability from Kentucky to Idaho. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated aprilie 1, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Kentucky to Idaho as you normally would.

Rainfall in Idaho by month

Plan your trip to Idaho by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Idaho ranges from 0.2 - 1.6 inches per month. December is typically the wettest month, when rainfall can reach 1.6 in. August is typically the driest time to visit Idaho when rainfall is around 0.2 in.

Temperature in Idaho by month

Plan your trip to Idaho by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Idaho, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 75.2 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 30.2 F).

Reviews of airlines servicing Idaho

Get insights into the airlines that provide service to Idaho. 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. Reviews last updated aprilie 1, 2025.
Get a feel of what it's like to fly with Alaska Airlines, Southwest and Delta from Kentucky to Idaho by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
9,818 reviews

Entertainment

7.1

Crew

8.5

Food

7.1

Boarding

8.2

Overall

8.0

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Alaska Airlines
8.0
Very good
9,818 reviews
Alaska Airlines
8.0
Very good
9,818 reviews

Entertainment

7.1

Crew

8.5

Food

7.1

Boarding

8.2

Overall

8.0

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Southwest
8.0
Very good
4,276 reviews
Alaska Airlines
8.0
Very good
9,818 reviews

Entertainment

7.1

Crew

8.5

Food

7.1

Boarding

8.2

Overall

8.0

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Delta
8.0
Very good
7,899 reviews
Alaska Airlines
8.0
Very good
9,818 reviews

Entertainment

7.1

Crew

8.5

Food

7.1

Boarding

8.2

Overall

8.0

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Hawaiian Airlines
7.9
Good
2,342 reviews
Alaska Airlines
8.0
Very good
9,818 reviews

Entertainment

7.1

Crew

8.5

Food

7.1

Boarding

8.2

Overall

8.0

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
United Airlines
7.4
Good
8,615 reviews
Alaska Airlines
8.0
Very good
9,818 reviews

Entertainment

7.1

Crew

8.5

Food

7.1

Boarding

8.2

Overall

8.0

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

Related info for your journey

Find useful and relevant information for your journey from Kentucky to Idaho. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

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

    To fly one-way, consider booking your trip with Delta, which is currently one of the cheapest options available, starting at $149. American Airlines flights start at $155 while deals on Hawaiian Airlines start at $171 one-way.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Kentucky to Idaho 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?

    Currently, October is the cheapest month in which you can book a flight from Kentucky to Idaho (average of $314). Flying from Kentucky to Idaho in June is currently the most expensive (average of $419). 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Kentucky to Idaho

See prices for flight routes from nearby airports that may be better suited for you.
LaGuardia to Miami flights
Newark to Fort Lauderdale flights
Newark to Miami flights
LaGuardia to Fort Lauderdale flights
John F Kennedy Intl to Las Vegas flights
John F Kennedy Intl to Los Angeles flights
Los Angeles to John F Kennedy Intl flights
John F Kennedy Intl to Miami flights
Newark to Orlando flights
Newark to Las Vegas flights
Dallas/Fort Worth to Seattle flights
LaGuardia to Orlando flights
Dallas/Fort Worth to LaGuardia flights
LaGuardia to Dallas/Fort Worth flights
John F Kennedy Intl to Fort Lauderdale flights
John F Kennedy Intl to Orlando flights
Newark to Los Angeles flights
San Francisco to John F Kennedy Intl flights
Los Angeles to Newark flights
Los Angeles to Honolulu flights
Dallas/Fort Worth to O'Hare Intl flights
Newark to Seattle flights
Dallas/Fort Worth to Las Vegas flights
Newark to Dallas/Fort Worth flights
LaGuardia to Atlanta flights
Denver to Las Vegas flights
O'Hare Intl to Las Vegas flights
John F Kennedy Intl to Seattle flights
Newark to Tampa flights
Dallas/Fort Worth to Newark flights
John F Kennedy Intl to San Francisco flights
Seattle to Las Vegas flights
LaGuardia to O'Hare Intl flights
John F Kennedy Intl to West Palm Beach flights
San Francisco to Newark flights
Dallas/Fort Worth to Orlando flights
Seattle to Newark flights
Atlanta to LaGuardia flights
John F Kennedy Intl to Sky Harbor Intl flights
O'Hare Intl to LaGuardia flights
Los Angeles to LaGuardia flights
Los Angeles to Seattle flights
Newark to New Orleans flights
LaGuardia to Las Vegas flights
John F Kennedy Intl to O'Hare Intl flights
LaGuardia to Los Angeles flights
O'Hare Intl to Dallas/Fort Worth flights
Seattle to Los Angeles flights
John F Kennedy Intl to Denver flights
Atlanta to Las Vegas flights

Top 4 airlines flying from Kentucky to Idaho

Discover the top 4 airlines that operate flights from Kentucky to Idaho. 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 aprilie 1, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$298Average$419FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$323Average$554FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$324Average$667FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$381Average$426FlexibilityNo cancel feeOn-time63%
100% Free
Cheapflights is completely free to use, so you can start saving the moment you arrive.
Book with Flexibility
Our users can plan ahead with confidence and find flights with no change fees
Travel Smart
Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.