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Idaho

$88+ 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 3/25. Fares are subject to change and may not be available on all flights or dates of travel.
SDF — BOI
Feb 28 — Mar 71
Sat 2/28
Sat 3/7
1 adult, Economy
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Cheap 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 January 29, 2026.

This Kiwi.com deal was found by Cheapflights users on 1/27. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/267:35 pm
BNA
-
BOI
1 stop16h 36m
Frontier
Thu 3/512:38 pm
BOI
-
BNA
1 stop24h 38m
Frontier
Deal found 1/27$172
This Kiwi.com deal was found by Cheapflights users on 1/27. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/268:45 pm
BNA
-
BOI
2 stops15h 26m
Multiple Airlines
Thu 3/512:38 pm
BOI
-
BNA
1 stop24h 38m
Multiple Airlines
Deal found 1/27$214
This CheapOair deal was found by Cheapflights users on 1/27. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/57:37 pm
BNA
-
BOI
1 stop16h 35m
Frontier
Mon 2/912:07 pm
BOI
-
BNA
1 stop5h 35m
Frontier
Deal found 1/27$233
This Delta deal was found by Cheapflights users on 1/27. 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.
Tue 3/107:59 pm
CVG
-
GEG
1 stop6h 51m
Delta
Tue 3/177:15 am
GEG
-
CVG
1 stop8h 49m
Delta
Deal found 1/27$237
This Delta deal was found by Cheapflights users on 1/26. 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.
Tue 3/107:00 am
BNA
-
BOI
1 stop10h 00m
Delta
Tue 3/1712:45 pm
BOI
-
BNA
1 stop7h 53m
Delta
Deal found 1/26$237
This Alaska Airlines deal was found by Cheapflights users on 1/28. 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 3/178:09 am
CVG
-
BOI
1 stop8h 59m
Alaska Airlines
Tue 3/246:00 am
BOI
-
CVG
1 stop10h 29m
Alaska Airlines
Deal found 1/28$237
This Delta deal was found by Cheapflights users on 1/26. 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 4/155:25 am
BNA
-
BOI
2 stops10h 01m
Delta
Tue 4/285:40 am
BOI
-
BNA
2 stops11h 35m
Delta
Deal found 1/26$248
This Delta deal was found by Cheapflights users on 1/28. 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 3/47:35 am
BNA
-
GEG
1 stop7h 00m
Delta
Wed 3/182:15 pm
GEG
-
BNA
1 stop6h 36m
Delta
Deal found 1/28$257
This United Airlines deal was found by Cheapflights users on 1/26. 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 2/247:30 am
BNA
-
GEG
2 stops9h 46m
United Airlines
Tue 3/31:44 pm
GEG
-
BNA
1 stop5h 52m
United Airlines
Deal found 1/26$262
This Delta deal was found by Cheapflights users on 1/26. 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.
Tue 2/247:00 am
BNA
-
GEG
2 stops13h 45m
Delta
Tue 3/37:30 pm
GEG
-
BNA
2 stops12h 11m
Delta
Deal found 1/26$268
This American Airlines deal was found by Cheapflights users on 1/28. 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 3/106:36 am
CVG
-
GEG
1 stop8h 08m
American Airlines
Tue 3/1712:25 pm
GEG
-
CVG
1 stop8h 00m
American Airlines
Deal found 1/28$270
This Alaska Airlines deal was found by Cheapflights users on 1/26. 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.
Thu 2/265:53 pm
BNA
-
BOI
1 stop7h 06m
Alaska Airlines
Mon 3/211:54 am
BOI
-
BNA
1 stop11h 05m
Alaska Airlines
Deal found 1/26$271

Find flight deals from Kentucky to Idaho

Keep the following information in mind while searching for Kentucky to Idaho flight deals. Data was last updated January 29, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$172
(Kiwi.com)

One-way from

$88
(Trip.com)

Popular in

December

Cheapest in

September

Average price

$402
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. 3% potential increase in price ($16 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($13 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals

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 January 29, 2026.
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

NashvilleBoise

BNA - BOI

BNABOI

Nashville Intl

Thu 2/5

7:37 pm-11:12 am

1 stop16h 35m

Boise Air Term. Gowen Fld

Mon 2/9

12:07 pm-6:42 pm

1 stop5h 35m

$233

CincinnatiSpokane

CVG - GEG

CVGGEG

Cincinnati Cinci./N. Kentucky

Tue 3/10

7:59 pm-11:50 pm

1 stop6h 51m

Spokane

Tue 3/17

7:15 am-7:04 pm

1 stop8h 49m

$237

CincinnatiSpokane

CVG - GEG

CVGGEG

Cincinnati Cinci./N. Kentucky

Sat 3/7

3:25 pm-9:18 pm

1 stop8h 53m

Spokane

Wed 3/11

5:00 am-2:23 pm

1 stop6h 23m

$237

NashvilleBoise

BNA - BOI

BNABOI

Nashville Intl

Tue 3/31

7:00 am-3:29 pm

1 stop9h 29m

Boise Air Term. Gowen Fld

Sat 4/4

11:58 am-5:40 am

1 stop16h 42m

$237

NashvilleBoise

BNA - BOI

BNABOI

Nashville Intl

Wed 4/1

7:22 pm-11:59 pm

1 stop5h 37m

Boise Air Term. Gowen Fld

Tue 4/14

3:23 pm-10:52 pm

1 stop6h 29m

$237

NashvilleBoise

BNA - BOI

BNABOI

Nashville Intl

Tue 3/10

7:00 am-4:00 pm

1 stop10h 00m

Boise Air Term. Gowen Fld

Tue 3/17

12:45 pm-9:38 pm

1 stop7h 53m

$237

NashvilleBoise

BNA - BOI

BNABOI

Nashville Intl

Wed 3/25

7:00 am-1:05 pm

1 stop7h 05m

Boise Air Term. Gowen Fld

Tue 3/31

11:30 pm-8:35 am

1 stop8h 05m

$237

NashvilleBoise

BNA - BOI

BNABOI

Nashville Intl

Wed 3/11

7:22 pm-11:59 pm

1 stop5h 37m

Boise Air Term. Gowen Fld

Tue 3/17

10:35 am-6:10 pm

1 stop6h 35m

$237

CincinnatiSpokane

CVG - GEG

CVGGEG

Cincinnati Cinci./N. Kentucky

Tue 3/10

11:00 am-9:18 pm

2 stops13h 18m

Spokane

Tue 3/17

5:00 am-2:23 pm

1 stop6h 23m

$242

NashvilleBoise

BNA - BOI

BNABOI

Nashville Intl

Wed 4/15

5:25 am-2:26 pm

2 stops10h 01m

Boise Air Term. Gowen Fld

Tue 4/28

10:45 am-6:15 pm

1 stop6h 30m

$242

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/28

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, August is the cheapest month in which you can book a flight from Kentucky to Idaho (average of $196). Flying from Kentucky to Idaho in January is currently the most expensive (average of $374). 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.

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 January 29, 2026.
See what other customers who have flown with Southwest, Delta, and United Airlines 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.
Southwest
8.0
Very good
4,267 reviews

Crew

8.6

Comfort

8.0

Food

7.0

Boarding

8.1

Entertainment

7.5

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
Southwest
8.0
Very good
4,267 reviews
Southwest
8.0
Very good
4,267 reviews

Crew

8.6

Comfort

8.0

Food

7.0

Boarding

8.1

Entertainment

7.5

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
Delta
7.9
Good
8,128 reviews
Southwest
8.0
Very good
4,267 reviews

Crew

8.6

Comfort

8.0

Food

7.0

Boarding

8.1

Entertainment

7.5

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
United Airlines
7.4
Good
9,215 reviews
Southwest
8.0
Very good
4,267 reviews

Crew

8.6

Comfort

8.0

Food

7.0

Boarding

8.1

Entertainment

7.5

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
American Airlines
7.2
Good
11,205 reviews
Southwest
8.0
Very good
4,267 reviews

Crew

8.6

Comfort

8.0

Food

7.0

Boarding

8.1

Entertainment

7.5

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am

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.

  • How long is the flight from Kentucky to Idaho?

    Airlines like Frontier, Delta, and United Airlines fly from Kentucky to Idaho in about 6h 51m. The time it takes to get you to your destination can typically vary by up to 9h 44m. Kentucky and Idaho are separated by a distance of 1738 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • 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, August is the cheapest month in which you can book a flight from Kentucky to Idaho (average of $196). Flying from Kentucky to Idaho in January is currently the most expensive (average of $374). 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.
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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 January 29, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$196Average$402FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$287Average$460FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$341Average$522FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$346Average$416FlexibilityNo cancel feeOn-time63%

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