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Idaho

$107+ 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 10/14. Fares are subject to change and may not be available on all flights or dates of travel.
SDF — BOI
Aug 5 — Aug 121
Tue 8/5
Tue 8/12
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 July 31, 2025.

Round-trip from

$213
(American Airlines)

One-way from

$107
(American Airlines)

Popular in

November

Cheapest in

February

Average price

$431
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. 15% potential increase in price ($86 potential increase over avg. RT price).
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Cheapest flight prices on average. 8% potential price decrease ($38 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

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 July 31, 2025.

This American 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/235:35 amBNA - JAC
1 stop7h 54mAmerican Airlines
Tue 10/281:24 pmJAC - BNA
1 stop8h 42mAmerican Airlines
Deal found 7/30$213
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 8/276:47 pmBNA - GEG
1 stop7h 12mAlaska Airlines
Wed 9/31:40 pmGEG - BNA
1 stop8h 28mAlaska Airlines
Deal found 7/30$258
This Frontier 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/46:18 amCVG - GEG
1 stop7h 40mFrontier
Sun 9/711:53 amGEG - CVG
1 stop7h 19mFrontier
Deal found 7/29$258
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.
Thu 8/215:10 pmBNA - GEG
1 stop8h 52mDelta
Wed 8/276:10 amGEG - BNA
1 stop8h 05mDelta
Deal found 7/31$259
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 9/512:45 pmBNA - GEG
1 stop7h 54mAmerican Airlines
Sat 9/136:00 amGEG - BNA
1 stop7h 43mAmerican Airlines
Deal found 7/31$265
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.
Tue 9/236:00 amLEX - JAC
1 stop6h 19mAmerican Airlines
Thu 10/24:08 pmJAC - LEX
1 stop6h 03mAmerican Airlines
Deal found 7/31$269
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.
Sat 8/305:54 pmCVG - GEG
2 stops8h 54mDelta
Tue 9/26:10 amGEG - CVG
1 stop9h 22mDelta
Deal found 7/31$284
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/216:03 pmTYS - BOI
1 stop7h 53mDelta
Tue 8/261:30 pmBOI - TYS
1 stop8h 18mDelta
Deal found 7/30$289
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.
Thu 8/215:06 amTYS - BOI
2 stops10h 14mAmerican Airlines
Tue 8/261:50 pmBOI - TYS
2 stops8h 29mAmerican Airlines
Deal found 7/31$299
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.
Fri 9/59:54 amBNA - GEG
2 stops13h 09mUnited Airlines
Sat 9/135:15 amGEG - BNA
1 stop6h 03mUnited Airlines
Deal found 7/31$306
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/292:18 pmBNA - JAC
1 stop6h 31mDelta
Fri 10/176:55 pmJAC - BNA
2 stops12h 47mDelta
Deal found 7/30$307
This Southwest 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/279:50 amBNA - GEG
2 stops11h 40mSouthwest
Wed 9/38:25 amGEG - BNA
2 stops8h 45mSouthwest
Deal found 7/30$315

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 July 31, 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

NashvilleJackson

BNA - JAC

BNAJAC

Nashville Intl

Thu 10/23

5:35 am-12:29 pm

1 stop7h 54m

Jackson Hole

Tue 10/28

1:24 pm-11:06 pm

1 stop8h 42m

$213

NashvilleSpokane

BNA - GEG

BNAGEG

Nashville Intl

Wed 8/27

6:47 pm-11:59 pm

1 stop7h 12m

Spokane

Wed 9/3

1:40 pm-12:08 am

1 stop8h 28m

$258

CincinnatiSpokane

CVG - GEG

CVGGEG

Cincinnati Cinci./N. Kentucky

Thu 9/4

6:18 am-10:58 am

1 stop7h 40m

Spokane

Sun 9/7

11:53 am-10:12 pm

1 stop7h 19m

$258

NashvilleSpokane

BNA - GEG

BNAGEG

Nashville Intl

Thu 8/21

5:10 pm-12:02 am

1 stop8h 52m

Spokane

Wed 8/27

6:10 am-4:15 pm

1 stop8h 05m

$259

NashvilleSpokane

BNA - GEG

BNAGEG

Nashville Intl

Fri 9/5

12:45 pm-6:39 pm

1 stop7h 54m

Spokane

Sat 9/13

6:00 am-3:43 pm

1 stop7h 43m

$265

LexingtonJackson

LEX - JAC

LEXJAC

Lexington Blue Grass

Tue 9/23

6:00 am-10:19 am

1 stop6h 19m

Jackson Hole

Thu 10/2

4:08 pm-12:11 am

1 stop6h 03m

$269

CincinnatiSpokane

CVG - GEG

CVGGEG

Cincinnati Cinci./N. Kentucky

Sat 8/30

5:54 pm-11:48 pm

2 stops8h 54m

Spokane

Tue 9/2

6:10 am-6:32 pm

1 stop9h 22m

$284

KnoxvilleBoise

TYS - BOI

TYSBOI

Knoxville McGhee Tyson

Thu 8/21

6:03 pm-11:56 pm

1 stop7h 53m

Boise Air Term. Gowen Fld

Tue 8/26

3:06 pm-11:55 pm

1 stop6h 49m

$289

KnoxvilleBoise

TYS - BOI

TYSBOI

Knoxville McGhee Tyson

Thu 8/21

5:06 am-1:20 pm

2 stops10h 14m

Boise Air Term. Gowen Fld

Tue 8/26

1:50 pm-12:19 am

2 stops8h 29m

$299

NashvilleSpokane

BNA - GEG

BNAGEG

Nashville Intl

Fri 9/5

9:54 am-9:03 pm

2 stops13h 09m

Spokane

Sat 9/13

5:15 am-1:18 pm

1 stop6h 03m

$306

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/30

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 $398). 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 July 31, 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.

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 July 31, 2025.
See what other customers who have flown with Alaska Airlines, Southwest, and Delta from Kentucky to Idaho have to say. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Food

7.1

Boarding

8.1

Comfort

7.8

Entertainment

7.1

Overall

8.0

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

Crew

8.5

Food

7.1

Boarding

8.1

Comfort

7.8

Entertainment

7.1

Overall

8.0

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.
Southwest
8.0
Very good
4,246 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Food

7.1

Boarding

8.1

Comfort

7.8

Entertainment

7.1

Overall

8.0

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

Crew

8.5

Food

7.1

Boarding

8.1

Comfort

7.8

Entertainment

7.1

Overall

8.0

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.
Hawaiian Airlines
7.8
Good
2,611 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Food

7.1

Boarding

8.1

Comfort

7.8

Entertainment

7.1

Overall

8.0

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

Crew

8.5

Food

7.1

Boarding

8.1

Comfort

7.8

Entertainment

7.1

Overall

8.0

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. 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 American Airlines, which is currently one of the cheapest options available, starting at $107. United Airlines flights start at $112 while deals on Hawaiian Airlines start at $119 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 $398). 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 July 31, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$258Average$424FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$278Average$534FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$324Average$634FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$351Average$416FlexibilityNo cancel feeOn-time63%

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