What airlines fly to Kentucky?

United Airlines, Delta and American Airlines are the top three most popular airlines that fly to Kentucky from Idaho according to our data. United Airlines is the first choice among our users, with 32% of people opting to fly with this airline when traveling to Kentucky. Keep in mind that there are 4 different airlines that fly to Kentucky on a routine basis, so you have a few additional options to choose from.

How long is the flight from Idaho to Kentucky?

On average, it takes 5h 10m to fly from Idaho to Kentucky if you fly out of Boise (the most popular airport in Idaho) and into Louisville (the most popular airport in Kentucky). If you’re flying out of Idaho Falls and into Louisville, then the flight time is around 5h 22m.

What is the cheapest airline that flies from Idaho to Kentucky?

Alaska Airlines, American Airlines, and Frontier are the most popular carriers operating from Idaho to Kentucky

When did momondo last update prices for flights from Idaho to Kentucky?

Prices for flights from Idaho to Kentucky refresh daily.

How many operators does momondo search for flights from Idaho to Kentucky?

The number of operators available for flights from Idaho to Kentucky is 5 as of September 2025.

How old do you have to be to fly from Idaho to Kentucky?

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Idaho to Kentucky.

What documentation or ID do you need to fly to Kentucky?

The required travel and health documents for your Kentucky trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Kentucky. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$131 Cheap Flights from Idaho to Kentucky in 2025/26

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Find the cheapest flights from Idaho to Kentucky

Round-trip

One-way

Last minute

Cheap round-trip flights

12:28 pm - 3:43 pmBOI-BNA

26h 15m1 stop

3:42 pm - 12:48 pmBNA-BOI

22h 06m1 stop

$156Frontier

Find Deal

Fri, Oct 24 - Sat, Nov 1

12:28 pm - 1:39 amBOI-CVG

11h 11m1 stop

6:05 am - 11:43 amCVG-BOI

7h 38m1 stop

$179Frontier

Find Deal

Thu, Oct 23 - Sun, Oct 26

1:39 pm - 10:39 pmBOI-BNA

8h 00m1 stop

6:00 am - 2:02 pmBNA-BOI

9h 02m1 stop

$271Delta

Find Deal

Mon, Oct 27 - Wed, Oct 29

2:00 pm - 11:58 pmBOI-BNA

8h 58m1 stop

5:15 am - 2:02 pmBNA-BOI

9h 47m2 stops

$276Delta

Find Deal

Mon, Oct 27 - Wed, Oct 29

6:31 am - 6:59 pmGEG-BNA

10h 28m2 stops

7:05 am - 4:42 pmBNA-GEG

11h 37m2 stops

$281American Airlines

Find Deal

Sat, Nov 15 - Wed, Nov 19

1:38 pm - 9:36 pmGEG-BNA

5h 58m1 stop

6:07 am - 11:31 amBNA-GEG

7h 24m1 stop

$295United Airlines

Find Deal

Sat, Oct 25 - Sun, Oct 26

1:14 pm - 11:21 pmGEG-LEX

7h 07m1 stop

6:40 am - 12:30 pmLEX-GEG

8h 50m1 stop

$314American Airlines

Find Deal

Tue, Dec 2 - Tue, Dec 9

1:38 pm - 10:30 pmGEG-SDF

5h 52m1 stop

3:30 pm - 8:24 pmSDF-GEG

7h 54m1 stop

$334United Airlines

Find Deal

Tue, Oct 14 - Sat, Oct 18

12:40 pm - 10:10 pmGEG-BNA

7h 30m1 stop

4:00 pm - 10:25 pmBNA-GEG

8h 25m2 stops

$360Southwest

Find Deal

Fri, Dec 5 - Mon, Dec 8

12:50 pm - 12:30 amGEG-SDF

8h 40m1 stop

1:50 pm - 10:00 pmSDF-GEG

11h 10m2 stops

$360Southwest

Find Deal

Wed, Oct 29 - Wed, Nov 5

Frontier flights from Idaho to Kentucky

Our best Frontier deals on Idaho to Kentucky flight tickets

Frontier

Oct 24

BOI12:28 pmBoise Air Term. Gowen Fld

26h 15m

1 stop

BNA3:43 pmNashville Intl

Nov 1

BNA3:42 pmNashville Intl

22h 06m

1 stop

BOI12:48 pmBoise Air Term. Gowen Fld

$156

Find similar

Frontier

Oct 23

BOI12:28 pmBoise Air Term. Gowen Fld

11h 11m

1 stop

CVG1:39 amCincinnati Cinci./N. Kentucky

Oct 26

CVG6:05 amCincinnati Cinci./N. Kentucky

7h 38m

1 stop

BOI11:43 amBoise Air Term. Gowen Fld

$179

Find similar

Frontier

Oct 23

BOI12:28 pmBoise Air Term. Gowen Fld

10h 31m

1 stop

BNA11:59 pmNashville Intl

Oct 26

BNA6:12 amNashville Intl

6h 31m

1 stop

BOI11:43 amBoise Air Term. Gowen Fld

$220

Find similar

Alaska Airlines flights from Idaho to Kentucky

Our best Alaska Airlines deals on Idaho to Kentucky flight tickets

Alaska Airlines

Nov 17

BOI2:20 pmBoise Air Term. Gowen Fld

8h 57m

1 stop

BNA12:17 amNashville Intl

Nov 18

BNA5:51 pmNashville Intl

7h 08m

1 stop

BOI11:59 pmBoise Air Term. Gowen Fld

$253

Find similar

Alaska Airlines

Oct 18

GEG1:31 pmSpokane

8h 40m

1 stop

BNA12:11 amNashville Intl

Oct 25

BNA8:45 amNashville Intl

10h 15m

1 stop

GEG5:00 pmSpokane

$261

Find similar

Alaska Airlines

Oct 23

GEG5:54 pmSpokane

9h 46m

1 stop

BNA5:40 amNashville Intl

Oct 28

BNA7:15 amNashville Intl

7h 11m

1 stop

GEG12:26 pmSpokane

$271

Find similar

Fly from

Fly to

Route

Depart

Return

Price

BoiseNashville

BOI - BNA

BOIBNA

Boise Air Term. Gowen Fld

Fri 10/24

12:28 pm-3:43 pm

1 stop26h 15m

Nashville Intl

Sat 11/1

3:42 pm-12:48 pm

1 stop22h 06m

$156

BoiseCincinnati

BOI - CVG

BOICVG

Boise Air Term. Gowen Fld

Thu 10/23

12:28 pm-1:39 am

1 stop11h 11m

Cincinnati Cinci./N. Kentucky

Sun 10/26

6:05 am-11:43 am

1 stop7h 38m

$179

BoiseNashville

BOI - BNA

BOIBNA

Boise Air Term. Gowen Fld

Mon 10/27

1:39 pm-10:39 pm

1 stop8h 00m

Nashville Intl

Wed 10/29

6:00 am-2:02 pm

1 stop9h 02m

$271

BoiseNashville

BOI - BNA

BOIBNA

Boise Air Term. Gowen Fld

Mon 10/27

2:00 pm-11:58 pm

1 stop8h 58m

Nashville Intl

Wed 10/29

5:15 am-2:02 pm

2 stops9h 47m

$276

SpokaneNashville

GEG - BNA

GEGBNA

Spokane

Sat 11/15

6:31 am-6:59 pm

2 stops10h 28m

Nashville Intl

Wed 11/19

7:05 am-4:42 pm

2 stops11h 37m

$281

SpokaneNashville

GEG - BNA

GEGBNA

Spokane

Sat 10/25

1:38 pm-9:36 pm

1 stop5h 58m

Nashville Intl

Sun 10/26

6:07 am-11:31 am

1 stop7h 24m

$295

SpokaneLexington

GEG - LEX

GEGLEX

Spokane

Tue 12/2

1:14 pm-11:21 pm

1 stop7h 07m

Lexington Blue Grass

Tue 12/9

6:40 am-12:30 pm

1 stop8h 50m

$314

SpokaneLouisville

GEG - SDF

GEGSDF

Spokane

Tue 10/14

1:38 pm-10:30 pm

1 stop5h 52m

Louisville Intl

Sat 10/18

3:30 pm-8:24 pm

1 stop7h 54m

$334

SpokaneNashville

GEG - BNA

GEGBNA

Spokane

Fri 12/5

12:40 pm-10:10 pm

1 stop7h 30m

Nashville Intl

Mon 12/8

4:00 pm-10:25 pm

2 stops8h 25m

$360

SpokaneLouisville

GEG - SDF

GEGSDF

Spokane

Wed 10/29

12:50 pm-12:30 am

1 stop8h 40m

Louisville Intl

Wed 11/5

1:50 pm-10:00 pm

2 stops11h 10m

$360

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Idaho to Kentucky

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

Other information

What is the cheapest month to fly to Kentucky?

If you’re not able to fly to Kentucky in February, then August is your next best option. Flight prices from Idaho to Kentucky during August average around $376.

What is the cheapest day to depart on your flight to Kentucky?

Our data shows that Wednesday is the least expensive day to fly to Kentucky. Tickets to fly out on this day can be as low as $427. If your travel schedule is flexible, try to avoid departing on a Monday because tickets tend to average around $613. These prices are subject to change though, so be sure to set up a Price Alert for flights to Kentucky.

What is the cheapest time of day to depart on your flight to Kentucky?

According to our data, the cheapest time of day to fly to Kentucky is in the evening. momondo users have found flights departing from Idaho to Kentucky in the evening for as low as $386. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. In contrast, the most expensive time of day to depart to Kentucky is in the morning when prices are around $521.

Can stopping save me money on Idaho to Kentucky flights?

You could potentially save up to 27% on your flight if you consider stops on a Idaho to Kentucky flight.

Cheap Idaho to Kentucky flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Idaho to Kentucky

Direct flights	None

There are no direct flights from Idaho to Kentucky. There are no popular flight routes from Idaho to Kentucky.

Search flight deals

When did momondo last update prices for flights from Idaho to Kentucky?
Prices for flights from Idaho to Kentucky refresh daily.
How many operators does momondo search for flights from Idaho to Kentucky?
The number of operators available for flights from Idaho to Kentucky is 5 as of September 2025.
How old do you have to be to fly from Idaho to Kentucky?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Idaho to Kentucky.
What documentation or ID do you need to fly to Kentucky?
The required travel and health documents for your Kentucky trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Kentucky. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Best airlines flying from Idaho to Kentucky

Compare and see reviews for airlines that fly from Idaho to Kentucky with momondo

Airline	Rating	Free Cancellation	Price
Delta	PriceFrom $234	Free Cancellation	Rating 7.9 7,971 reviews	Search Delta flights
American Airlines	PriceFrom $268	Free Cancellation	Rating 7.2 10,000 reviews	Search American Airlines flights
Southwest	PriceFrom $348	Free Cancellation	Rating 8.0 4,244 reviews	Search Southwest flights
United Airlines	PriceFrom $384	Free Cancellation	Rating 7.4 8,922 reviews	Search United Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from Idaho to Kentucky?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Idaho to Kentucky for you.

Can I find flights from Idaho to Kentucky with flexible booking policies on momondo?

momondo does allow users to show only those flights to Kentucky from Idaho which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from Idaho to Kentucky?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Kentucky from Idaho.

I’m not ready to book a flight from Idaho to Kentucky right now. Can momondo alert me if prices change?

Price alerts on flights to Kentucky from Idaho are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.