What airlines fly to Idaho?

American Airlines, Delta and United Airlines are the top three most popular airlines that fly to Idaho from Kentucky according to our data. American Airlines is the first choice among our users, with 30% of people opting to fly with this airline when traveling to Idaho. Keep in mind that there are 4 different airlines that fly to Idaho on a routine basis, so you have a few additional options to choose from.

How many flights depart from Kentucky to Idaho on average per week?

6 flights are operational weekly from Kentucky to Idaho as of September 2025. The most popular departure day for this route is Mon, with 17% of flights per week taking off on this day.

How long is the flight from Kentucky to Idaho?

Flight times from Kentucky to Idaho vary, but if you’re flying out of Louisville and flying into Boise (one of the most popular routes), then the duration is 6h 15m on average. Another popular route from Kentucky to Idaho is flying from Lexington to Boise, which will take roughly 9h 52m. Keep in mind that layovers or delays could extend your travel time.

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

Delta, United Airlines, and Frontier are the most popular carriers operating from Kentucky to Idaho

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

Prices for flights from Kentucky to Idaho are refreshed on a daily basis.

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

As of September 2025, there are 7 operators available to choose from for flights from Kentucky to Idaho.

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

The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Kentucky to Idaho.

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

The required travel and health documents for your Idaho 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 Idaho. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$112 Cheap Flights from Kentucky to Idaho in 2025/26

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Find the cheapest flights from Kentucky to Idaho

Round-trip

One-way

Last minute

Cheap round-trip flights

6:12 am - 11:43 amBNA-BOI

6h 31m1 stop

12:28 pm - 11:59 pmBOI-BNA

10h 31m1 stop

$145Frontier

Find Deal

Thu, Oct 16 - Thu, Oct 23

6:12 am - 11:43 amBNA-BOI

6h 31m1 stop

12:28 pm - 10:40 amBOI-BNA

21h 12m1 stop

$155Frontier

Find Deal

Thu, Oct 16 - Thu, Oct 23

5:00 pm - 11:43 pmBNA-GEG

8h 43m1 stop

5:45 am - 2:53 pmGEG-BNA

7h 08m1 stop

$223Delta

Find Deal

Tue, Oct 14 - Tue, Oct 28

5:15 am - 1:29 pmBNA-GEG

10h 14m2 stops

12:51 pm - 9:22 pmGEG-BNA

6h 31m1 stop

$228Delta

Find Deal

Tue, Oct 14 - Tue, Oct 28

6:45 am - 12:16 pmBNA-JAC

6h 31m1 stop

1:06 pm - 9:37 pmJAC-BNA

7h 31m1 stop

$263American Airlines

Find Deal

Tue, Nov 11 - Sat, Nov 15

5:00 am - 12:16 pmBNA-JAC

8h 16m1 stop

1:06 pm - 11:59 pmJAC-BNA

9h 53m2 stops

$268American Airlines

Find Deal

Tue, Nov 11 - Sat, Nov 15

7:40 am - 5:15 pmBNA-BOI

10h 35m2 stops

4:40 pm - 12:30 amBOI-BNA

6h 50m1 stop

$308Southwest

Find Deal

Wed, Oct 15 - Wed, Oct 22

4:55 pm - 8:37 pmTYS-JAC

5h 42m1 stop

10:45 am - 11:59 pmJAC-TYS

11h 14m2 stops

$314United Airlines

Find Deal

Thu, Nov 13 - Sat, Nov 15

7:00 am - 11:42 amSDF-GEG

7h 42m1 stop

1:38 pm - 10:30 pmGEG-SDF

5h 52m1 stop

$317United Airlines

Find Deal

Tue, Oct 7 - Tue, Oct 14

3:00 pm - 10:25 pmBNA-GEG

9h 25m2 stops

5:25 am - 3:25 pmGEG-BNA

8h 00m2 stops

$329Southwest

Find Deal

Tue, Oct 14 - Tue, Oct 28

Frontier flights from Kentucky to Idaho

Our best Frontier deals on Kentucky to Idaho flight tickets

Frontier

Oct 16

BNA6:12 amNashville Intl

6h 31m

1 stop

BOI11:43 amBoise Air Term. Gowen Fld

Oct 23

BOI12:28 pmBoise Air Term. Gowen Fld

10h 31m

1 stop

BNA11:59 pmNashville Intl

$145

Find similar

Frontier

Oct 16

BNA6:12 amNashville Intl

6h 31m

1 stop

BOI11:43 amBoise Air Term. Gowen Fld

Oct 23

BOI12:28 pmBoise Air Term. Gowen Fld

21h 12m

1 stop

BNA10:40 amNashville Intl

$155

Find similar

Frontier

Oct 2

CVG6:18 amCincinnati Cinci./N. Kentucky

7h 19m

1 stop

BOI11:37 amBoise Air Term. Gowen Fld

Oct 5

BOI12:22 pmBoise Air Term. Gowen Fld

11h 18m

1 stop

CVG1:40 amCincinnati Cinci./N. Kentucky

$160

Find similar

Alaska Airlines flights from Kentucky to Idaho

Our best Alaska Airlines deals on Kentucky to Idaho flight tickets

Alaska Airlines

Oct 11

BNA7:00 amNashville Intl

8h 36m

1 stop

BOI2:36 pmBoise Air Term. Gowen Fld

Oct 14

BOI8:26 pmBoise Air Term. Gowen Fld

8h 14m

1 stop

BNA5:40 amNashville Intl

$311

Find similar

Alaska Airlines

Oct 10

BNA6:04 pmNashville Intl

7h 04m

1 stop

GEG11:08 pmSpokane

Oct 17

GEG7:34 pmSpokane

8h 06m

1 stop

BNA5:40 amNashville Intl

$338

Find similar

Alaska Airlines

Oct 10

BNA6:04 pmNashville Intl

16h 16m

2 stops

GEG8:20 amSpokane

Oct 17

GEG8:54 pmSpokane

6h 46m

1 stop

BNA5:40 amNashville Intl

$366

Find similar

Fly from

Fly to

Route

Depart

Return

Price

NashvilleBoise

BNA - BOI

BNABOI

Nashville Intl

Thu 10/16

6:12 am-11:43 am

1 stop6h 31m

Boise Air Term. Gowen Fld

Thu 10/23

12:28 pm-11:59 pm

1 stop10h 31m

$145

NashvilleBoise

BNA - BOI

BNABOI

Nashville Intl

Thu 10/16

6:12 am-11:43 am

1 stop6h 31m

Boise Air Term. Gowen Fld

Thu 10/23

12:28 pm-10:40 am

1 stop21h 12m

$155

NashvilleSpokane

BNA - GEG

BNAGEG

Nashville Intl

Tue 10/14

5:00 pm-11:43 pm

1 stop8h 43m

Spokane

Tue 10/28

5:45 am-2:53 pm

1 stop7h 08m

$223

NashvilleSpokane

BNA - GEG

BNAGEG

Nashville Intl

Tue 10/14

5:15 am-1:29 pm

2 stops10h 14m

Spokane

Tue 10/28

12:51 pm-9:22 pm

1 stop6h 31m

$228

NashvilleJackson

BNA - JAC

BNAJAC

Nashville Intl

Tue 11/11

6:45 am-12:16 pm

1 stop6h 31m

Jackson Hole

Sat 11/15

1:06 pm-9:37 pm

1 stop7h 31m

$263

NashvilleJackson

BNA - JAC

BNAJAC

Nashville Intl

Tue 11/11

5:00 am-12:16 pm

1 stop8h 16m

Jackson Hole

Sat 11/15

1:06 pm-11:59 pm

2 stops9h 53m

$268

NashvilleBoise

BNA - BOI

BNABOI

Nashville Intl

Wed 10/15

7:40 am-5:15 pm

2 stops10h 35m

Boise Air Term. Gowen Fld

Wed 10/22

4:40 pm-12:30 am

1 stop6h 50m

$308

KnoxvilleJackson

TYS - JAC

TYSJAC

Knoxville McGhee Tyson

Thu 11/13

4:55 pm-8:37 pm

1 stop5h 42m

Jackson Hole

Sat 11/15

10:45 am-11:59 pm

2 stops11h 14m

$314

LouisvilleSpokane

SDF - GEG

SDFGEG

Louisville Intl

Tue 10/7

7:00 am-11:42 am

1 stop7h 42m

Spokane

Tue 10/14

1:38 pm-10:30 pm

1 stop5h 52m

$317

NashvilleSpokane

BNA - GEG

BNAGEG

Nashville Intl

Tue 10/14

3:00 pm-10:25 pm

2 stops9h 25m

Spokane

Tue 10/28

5:25 am-3:25 pm

2 stops8h 00m

$329

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 Kentucky to Idaho

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 Idaho?

In general, September is the cheapest month to fly from Kentucky to Idaho. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $316. If you don’t want to visit Idaho in September, then you should wait until August to fly from Kentucky, when ticket prices are also cheap, with an average price of $332.

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

Our data shows that Saturday is the least expensive day to fly to Idaho. Tickets to fly out on this day can be as low as $400. On the other hand, Tuesday is the most expensive day to depart from Kentucky because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $602.

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

According to our data, the cheapest time of day to fly to Idaho is in the evening. momondo users have found flights departing from Kentucky to Idaho in the evening for as low as $407. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. In the afternoon is when there is more demand to fly to Idaho, so prices are often more expensive at around $586 per ticket.

Can stopping save me money on Kentucky to Idaho flights?

You could potentially save up to 9% on your flight if you consider stops on a Kentucky to Idaho flight.

Cheap Kentucky to Idaho flight deals and tips

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

Direct flights	None

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

Search flight deals

When did momondo last update prices for flights from Kentucky to Idaho?
Prices for flights from Kentucky to Idaho are refreshed on a daily basis.
How many operators does momondo search for flights from Kentucky to Idaho?
As of September 2025, there are 7 operators available to choose from for flights from Kentucky to Idaho.
How old do you have to be to fly from Kentucky to Idaho?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Kentucky to Idaho.
What documentation or ID do you need to fly to Idaho?
The required travel and health documents for your Idaho 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 Idaho. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Best airlines flying from Kentucky to Idaho

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

Airline	Rating	Free Cancellation	Price
Delta	PriceFrom $258	Free Cancellation	Rating 7.9 7,961 reviews	Search Delta flights
American Airlines	PriceFrom $287	Free Cancellation	Rating 7.2 10,000 reviews	Search American Airlines flights
Southwest	PriceFrom $351	Free Cancellation	Rating 8.0 4,242 reviews	Search Southwest flights
United Airlines	PriceFrom $374	Free Cancellation	Rating 7.4 8,926 reviews	Search United Airlines flights

Why use momondo?

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

Finding the right flight to Idaho from Kentucky is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Idaho quick and easy, saving you time and money.

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

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

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

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 Idaho from Kentucky.

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

Yes momondo offers price alerts on flights to Idaho from Kentucky. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.