HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Idaho

$135+ 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 11/17. Fares are subject to change and may not be available on all flights or dates of travel.
SDF — BOI
Oct 26 — Nov 21
Sun 10/26
Sun 11/2
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 September 26, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$207
(Booking.com)

One-way from

$135
(Alaska Airlines)

Popular in

November

Cheapest in

September

Average price

$316
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. 21% potential increase in price ($125 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 10% potential price decrease ($43 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in September 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 September 26, 2025.

This Booking.com deal was found by Cheapflights users on 9/25. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/236:12 amBNA - GEG
1 stop6h 56mFrontier
Thu 10/3012:03 pmGEG - BNA
1 stop24h 44mFrontier
Deal found 9/25$207
This Booking.com deal was found by Cheapflights users on 9/25. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/254:38 pmBNA - GEG
1 stop20h 30mFrontier
Thu 10/3012:03 pmGEG - BNA
1 stop24h 44mFrontier
Deal found 9/25$223
This Booking.com deal was found by Cheapflights users on 9/26. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/266:12 amBNA - BOI
1 stop6h 31mFrontier
Sun 11/212:33 pmBOI - BNA
1 stop25h 14mFrontier
Deal found 9/26$242
This Frontier deal was found by Cheapflights users on 9/24. 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 10/166:12 amBNA - BOI
1 stop6h 31mFrontier
Sun 10/1912:28 pmBOI - BNA
1 stop10h 31mFrontier
Deal found 9/24$247
This Kiwi.com deal was found by Cheapflights users on 9/25. 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 12/47:40 pmBNA - BOI
1 stop17h 24mMultiple Airlines
Mon 12/810:41 pmBOI - BNA
1 stop25h 18mMultiple Airlines
Deal found 9/25$263
This Southwest deal was found by Cheapflights users on 9/26. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/166:50 pmBNA - GEG
1 stop7h 30mSouthwest
Tue 10/2112:50 pmGEG - BNA
1 stop8h 35mSouthwest
Deal found 9/26$271
This Alaska Airlines deal was found by Cheapflights users on 9/26. 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.
Sat 10/187:00 amBNA - BOI
1 stop8h 36mAlaska Airlines
Tue 10/216:00 amBOI - BNA
1 stop10h 04mAlaska Airlines
Deal found 9/26$271
This Delta deal was found by Cheapflights users on 9/26. 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.
Thu 10/236:00 amBNA - BOI
1 stop9h 02mDelta
Wed 10/299:00 amBOI - BNA
2 stops12h 00mDelta
Deal found 9/26$276
This Delta deal was found by Cheapflights users on 9/26. 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.
Thu 11/67:34 amBNA - JAC
1 stop8h 13mDelta
Sun 11/912:57 pmJAC - BNA
1 stop8h 02mDelta
Deal found 9/26$277
This Kiwi.com deal was found by Cheapflights users on 9/24. 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 10/307:00 amTYS - BOI
1 stop6h 48mMultiple Airlines
Sun 11/212:33 pmBOI - TYS
2 stops27h 39mMultiple Airlines
Deal found 9/24$279
This Delta deal was found by Cheapflights users on 9/25. 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 10/257:34 amBNA - GEG
2 stops11h 10mDelta
Sat 11/19:45 amGEG - BNA
2 stops10h 12mDelta
Deal found 9/25$281
This Alaska Airlines deal was found by Cheapflights users on 9/25. 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.
Fri 10/178:45 amBNA - GEG
1 stop26h 47mAlaska Airlines
Tue 10/2111:45 amGEG - BNA
1 stop10h 26mAlaska Airlines
Deal found 9/25$284

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 September 26, 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

Sat 10/25

4:38 pm-11:08 am

1 stop20h 30m

Spokane

Thu 10/30

12:03 pm-2:47 pm

1 stop24h 44m

$223

NashvilleBoise

BNA - BOI

BNABOI

Nashville Intl

Thu 10/16

6:12 am-11:43 am

1 stop6h 31m

Boise Air Term. Gowen Fld

Sun 10/19

12:28 pm-11:59 pm

1 stop10h 31m

$247

NashvilleSpokane

BNA - GEG

BNAGEG

Nashville Intl

Thu 10/16

6:50 pm-12:20 am

1 stop7h 30m

Spokane

Tue 10/21

12:50 pm-11:25 pm

1 stop8h 35m

$271

NashvilleSpokane

BNA - GEG

BNAGEG

Nashville Intl

Sat 10/25

5:00 am-11:43 am

1 stop8h 43m

Spokane

Sat 11/1

12:49 pm-10:13 pm

1 stop7h 24m

$271

NashvilleBoise

BNA - BOI

BNABOI

Nashville Intl

Tue 10/28

6:30 am-1:44 pm

1 stop8h 14m

Boise Air Term. Gowen Fld

Thu 10/30

2:40 pm-10:45 pm

1 stop7h 05m

$271

NashvilleBoise

BNA - BOI

BNABOI

Nashville Intl

Sat 10/18

7:00 am-2:36 pm

1 stop8h 36m

Boise Air Term. Gowen Fld

Tue 10/21

6:00 am-5:04 pm

1 stop10h 04m

$271

NashvilleBoise

BNA - BOI

BNABOI

Nashville Intl

Thu 12/4

6:32 pm-12:10 am

1 stop6h 38m

Boise Air Term. Gowen Fld

Mon 12/8

11:10 am-10:00 pm

2 stops9h 50m

$276

NashvilleBoise

BNA - BOI

BNABOI

Nashville Intl

Sat 10/25

7:15 am-4:06 pm

1 stop9h 51m

Boise Air Term. Gowen Fld

Mon 11/3

7:40 am-10:00 pm

2 stops13h 20m

$276

KnoxvilleBoise

TYS - BOI

TYSBOI

Knoxville McGhee Tyson

Thu 10/30

7:00 am-11:48 am

1 stop6h 48m

Boise Air Term. Gowen Fld

Sun 11/2

12:33 pm-6:12 pm

2 stops27h 39m

$279

NashvilleBoise

BNA - BOI

BNABOI

Nashville Intl

Tue 10/28

7:34 am-4:06 pm

2 stops9h 32m

Boise Air Term. Gowen Fld

Thu 10/30

11:12 am-10:39 pm

2 stops10h 27m

$281

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/24

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 $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 September 26, 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 September 26, 2025.
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
4,245 reviews

Overall

8.0

Food

7.0

Comfort

8.0

Boarding

8.1

Crew

8.6

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Southwest
8.0
Very good
4,245 reviews
Southwest
8.0
Very good
4,245 reviews

Overall

8.0

Food

7.0

Comfort

8.0

Boarding

8.1

Crew

8.6

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Delta
8.0
Very good
7,973 reviews
Southwest
8.0
Very good
4,245 reviews

Overall

8.0

Food

7.0

Comfort

8.0

Boarding

8.1

Crew

8.6

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
United Airlines
7.4
Good
8,928 reviews
Southwest
8.0
Very good
4,245 reviews

Overall

8.0

Food

7.0

Comfort

8.0

Boarding

8.1

Crew

8.6

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,245 reviews

Overall

8.0

Food

7.0

Comfort

8.0

Boarding

8.1

Crew

8.6

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines

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, Southwest, and American Airlines fly from Kentucky to Idaho in about 7h 30m. The time it takes to get you to your destination can typically vary by up to 13h. Kentucky and Idaho are separated by a distance of 1758 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • 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 $135. Delta flights start at $136 while deals on Frontier start at $150 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

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.
Los Angeles to John F Kennedy Intl flights
Dallas/Fort Worth to Las Vegas flights
John F Kennedy Intl to Miami flights
LaGuardia to Dallas/Fort Worth flights
Newark to Fort Lauderdale flights
John F Kennedy Intl to O'Hare Intl flights
LaGuardia to Fort Lauderdale flights
John F Kennedy Intl to Las Vegas flights
John F Kennedy Intl to Los Angeles flights
John F Kennedy Intl to Dallas/Fort Worth flights
San Francisco to John F Kennedy Intl flights
Dallas/Fort Worth to John F Kennedy Intl flights
Dallas/Fort Worth to Seattle flights
Los Angeles to Newark flights
Dallas/Fort Worth to LaGuardia flights
Newark to Miami flights
LaGuardia to Miami flights
O'Hare Intl to John F Kennedy Intl flights
O'Hare Intl to Las Vegas flights
LaGuardia to O'Hare Intl flights
Newark to O'Hare Intl flights
John F Kennedy Intl to Orlando flights
Los Angeles to Seattle flights
O'Hare Intl to Dallas/Fort Worth flights
San Francisco to Newark flights
O'Hare Intl to Newark flights
Dallas/Fort Worth to O'Hare Intl flights
Seattle to Las Vegas flights
Dulles Intl to Dallas/Fort Worth flights
Seattle to Dallas/Fort Worth flights
Newark to Los Angeles flights
John F Kennedy Intl to Fort Lauderdale flights
Newark to Las Vegas flights
Newark to Orlando flights
Los Angeles to LaGuardia flights
O'Hare Intl to LaGuardia flights
Baltimore to Dallas/Fort Worth flights
San Francisco to Las Vegas flights
John F Kennedy Intl to San Francisco flights
Dallas/Fort Worth to Newark flights
Los Angeles to Dallas/Fort Worth flights
Dallas/Fort Worth to Los Angeles flights
Los Angeles to Honolulu flights
Seattle to Los Angeles flights
San Francisco to Los Angeles flights
Los Angeles to O'Hare Intl flights
Dulles Intl to Las Vegas flights
Dallas/Fort Worth to Denver flights
Seattle to Sky Harbor Intl flights
O'Hare Intl to Sky Harbor Intl 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 September 26, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$258Average$425FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$287Average$465FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$351Average$426FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$374Average$622FlexibilityNo cancel feeOn-time69%

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.