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Idaho

$147+ 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 8/8. Fares are subject to change and may not be available on all flights or dates of travel.
SDF — BOI
Apr 27 — May 41
Sun 4/27
Sun 5/4
1 adult, Economy
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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 April 22, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$251
(Delta)

One-way from

$147
(Alaska Airlines)

Popular in

September

Cheapest in

February

Average price

$426
Provider with most accurate pricing for Louisville Intl-Boise Air Term. Gowen Fld flight deals.
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Provider most trusted by Cheapflights users for Louisville Intl-Boise Air Term. Gowen Fld flights.
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From Kentucky to Idaho
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One-way flight from Kentucky to Idaho
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Highest demand for flights based on searches. 11% potential increase in price ($60 potential increase over avg. RT price).
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Cheapest flight prices on average. 5% potential price decrease ($27 potential savings vs. average RT price).
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Average for round-trip flights in April 2025
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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 April 22, 2025.

This Delta deal was found by Cheapflights users on 4/21. 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 5/145:45 amTYS - GEG
1 stop8h 44mDelta
Tue 5/2012:39 pmGEG - TYS
1 stop8h 12mDelta
Deal found 4/21$251
This Alaska Airlines deal was found by Cheapflights users on 4/21. 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 5/147:10 amBNA - GEG
1 stop7h 21mAlaska Airlines
Mon 5/197:26 pmGEG - BNA
1 stop8h 14mAlaska Airlines
Deal found 4/21$275
This Alaska Airlines deal was found by Cheapflights users on 4/21. 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 5/147:10 amBNA - BOI
1 stop7h 37mAlaska Airlines
Tue 5/208:59 pmBOI - BNA
1 stop7h 41mAlaska Airlines
Deal found 4/21$279
This Hawaiian Airlines deal was found by Cheapflights users on 4/21. 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.
Sat 8/29:00 amBNA - GEG
1 stop9h 06mHawaiian Airlines
Sat 8/98:48 pmGEG - BNA
1 stop6h 52mHawaiian Airlines
Deal found 4/21$296
This Delta deal was found by Cheapflights users on 4/21. 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 5/313:00 pmBNA - GEG
1 stop8h 40mDelta
Tue 6/1011:10 pmGEG - BNA
1 stop8h 42mDelta
Deal found 4/21$297
This Mytrip deal was found by Cheapflights users on 4/21. 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 5/156:59 pmBNA - BOI
1 stop17h 22mSpirit Airlines
Mon 5/1912:16 pmBOI - BNA
1 stop16h 39mSpirit Airlines
Deal found 4/21$302
This Delta deal was found by Cheapflights users on 4/21. 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 5/286:36 pmBNA - BOI
1 stop6h 46mDelta
Tue 6/312:50 pmBOI - BNA
1 stop8h 21mDelta
Deal found 4/21$307
This American Airlines deal was found by Cheapflights users on 4/21. 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 8/128:04 amSDF - GEG
1 stop6h 32mAmerican Airlines
Tue 8/191:39 pmGEG - SDF
1 stop16h 45mAmerican Airlines
Deal found 4/21$311
This Delta deal was found by Cheapflights users on 4/22. 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 5/287:36 pmCVG - BOI
1 stop6h 46mDelta
Mon 6/212:50 pmBOI - CVG
1 stop8h 02mDelta
Deal found 4/22$313
This United Airlines deal was found by Cheapflights users on 4/21. 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 9/254:10 pmBNA - GEG
1 stop6h 22mUnited Airlines
Wed 10/15:15 amGEG - BNA
2 stops8h 40mUnited Airlines
Deal found 4/21$325
This American Airlines deal was found by Cheapflights users on 4/20. 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 6/74:26 pmCVG - JAC
1 stop6h 29mAmerican Airlines
Wed 6/113:29 pmJAC - CVG
1 stop5h 39mAmerican Airlines
Deal found 4/20$327
This American Airlines deal was found by Cheapflights users on 4/22. 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 9/236:03 amLEX - JAC
1 stop6h 02mAmerican Airlines
Thu 10/23:29 pmJAC - LEX
1 stop5h 55mAmerican Airlines
Deal found 4/22$329

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 April 22, 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

KnoxvilleSpokane

TYS - GEG

TYSGEG

Knoxville McGhee Tyson

Wed 5/14

5:45 am-11:29 am

1 stop8h 44m

Spokane

Tue 5/20

12:39 pm-11:51 pm

1 stop8h 12m

$251

NashvilleSpokane

BNA - GEG

BNAGEG

Nashville Intl

Wed 5/14

7:10 am-12:31 pm

1 stop7h 21m

Spokane

Mon 5/19

7:26 pm-5:40 am

1 stop8h 14m

$275

NashvilleBoise

BNA - BOI

BNABOI

Nashville Intl

Wed 5/14

7:10 am-1:47 pm

1 stop7h 37m

Boise Air Term. Gowen Fld

Tue 5/20

8:59 pm-5:40 am

1 stop7h 41m

$279

NashvilleSpokane

BNA - GEG

BNAGEG

Nashville Intl

Sat 8/2

9:00 am-4:06 pm

1 stop9h 06m

Spokane

Sat 8/9

8:48 pm-5:40 am

1 stop6h 52m

$296

NashvilleSpokane

BNA - GEG

BNAGEG

Nashville Intl

Sat 5/31

3:00 pm-9:40 pm

1 stop8h 40m

Spokane

Tue 6/10

11:10 pm-9:52 am

1 stop8h 42m

$297

NashvilleBoise

BNA - BOI

BNABOI

Nashville Intl

Thu 5/15

6:59 pm-11:21 am

1 stop17h 22m

Boise Air Term. Gowen Fld

Mon 5/19

12:16 pm-5:55 am

1 stop16h 39m

$302

NashvilleBoise

BNA - BOI

BNABOI

Nashville Intl

Wed 5/28

6:36 pm-12:22 am

1 stop6h 46m

Boise Air Term. Gowen Fld

Tue 6/3

12:50 pm-10:11 pm

1 stop8h 21m

$307

LouisvilleSpokane

SDF - GEG

SDFGEG

Louisville Intl

Tue 8/12

8:04 am-11:36 am

1 stop6h 32m

Spokane

Tue 8/19

1:39 pm-9:24 am

1 stop16h 45m

$311

CincinnatiBoise

CVG - BOI

CVGBOI

Cincinnati Cinci./N. Kentucky

Wed 5/28

7:36 pm-12:22 am

1 stop6h 46m

Boise Air Term. Gowen Fld

Mon 6/2

12:50 pm-10:52 pm

1 stop8h 02m

$313

NashvilleSpokane

BNA - GEG

BNAGEG

Nashville Intl

Thu 9/25

4:10 pm-8:32 pm

1 stop6h 22m

Spokane

Wed 10/1

5:15 am-3:55 pm

2 stops8h 40m

$325

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/21

Showing 1-10 of 60 results
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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 April 22, 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 April 22, 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
9,906 reviews

Entertainment

7.1

Food

7.1

Crew

8.5

Boarding

8.2

Comfort

7.9

Overall

8.0

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
Alaska Airlines
8.0
Very good
9,906 reviews
Alaska Airlines
8.0
Very good
9,906 reviews

Entertainment

7.1

Food

7.1

Crew

8.5

Boarding

8.2

Comfort

7.9

Overall

8.0

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
Southwest
8.0
Very good
4,286 reviews
Alaska Airlines
8.0
Very good
9,906 reviews

Entertainment

7.1

Food

7.1

Crew

8.5

Boarding

8.2

Comfort

7.9

Overall

8.0

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
Delta
8.0
Very good
7,920 reviews
Alaska Airlines
8.0
Very good
9,906 reviews

Entertainment

7.1

Food

7.1

Crew

8.5

Boarding

8.2

Comfort

7.9

Overall

8.0

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
Hawaiian Airlines
7.9
Good
2,392 reviews
Alaska Airlines
8.0
Very good
9,906 reviews

Entertainment

7.1

Food

7.1

Crew

8.5

Boarding

8.2

Comfort

7.9

Overall

8.0

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
United Airlines
7.4
Good
8,684 reviews
Alaska Airlines
8.0
Very good
9,906 reviews

Entertainment

7.1

Food

7.1

Crew

8.5

Boarding

8.2

Comfort

7.9

Overall

8.0

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >

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 Alaska Airlines, which is currently one of the cheapest options available, starting at $147. United Airlines flights start at $149 while deals on Delta start at $154 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

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Alternative routes for Kentucky to Idaho

See prices for flight routes from nearby airports that may be better suited for you.
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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 April 22, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$298Average$438FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$323Average$528FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$337Average$678FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$371Average$416FlexibilityNo cancel feeOn-time63%

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